@@TechIngredients you are absolutely! I cant get enough of this channels videocontent (exept the smokebombs maybe, ánd i am still waiting for the next video about how good or bad the fluidpumpaction will be with that six enormous neodyniummagnets around that fluidchannel? That was a great idea&making to watch en could only get greater so i can not wait longer to see more of it!)
I am very sure you are! This is indeed one of the last remaining high quality, original content channels and i hungrily wait for each video you put out there.
To be honest, you have rekindled my desire to go back to college and finish my mechanical engineering degree. Your videos are informative, and are very interesting to watch.
what I really appreciate is the fact that he cools down the information enough to where someone like me with barely any mechanical engineering knowledge can understand it, yet he doesnt dumb it down to the point where youre losing a significant amount of important information
I have just graduated with a mechanical engineering degree and it's one of the few degrees where most of the things you learn are actually things you do on a daily basis. Definitely worth it in my opinion
Remember to measure the thrust. I would like to see a comparison of the thrust of the EDFs alone vs. the jet engine assembly. Stay safe and I'm looking forward to see the next video.
Thank you! Luckily, we did that exactly. Before adding any fuel, we tested the EDFs by themselves and measured the thrust in the next upcoming video. Stay tuned :)
I still can't believe this is a new channel. You guys are just the best! I truly hope you'll keep the format open and inviting and it the spirit of learning.
Gotta say, as a first year aerospace engineering student, I love that these videos are both accessible to someone who is just starting to learn these concepts but are also super informative and not just some wahoo playing with fire. Jet engines are not easy concepts to explain but you definitely make it seem intuitive.
You know what, I've been looking for "this" video for years. Just having someone knowledgeable explain the building process and tinkering with a home made jet engine. What can I say. Thank you from the bottom of my heart!
This channel is incredible. Definitely one of the best I've seen on UA-cam. You are very talented at explaining how things work in a concise and easy to understand way. Thank you for doing this!
Do you have a video where you discuss your work history/experience? I think it would be very interesting to hear how you've acquired the knowledge you have. You're clearly a very brilliant thinker and I love watching your videos!
Thank you so much for the quality content. You remind me of one of my favorite professors from back in college, it's really relaxing and informative to just sit back and watch your videos. By the way, whoever does your camera work knows what they're doing and they deserve recognition. Cameraman/woman, bravo! Great work on the engine, I've been messing around with the same concepts on my farm and so far I've got one hell of a leaf blower. Cheers!
i was literally just searching for information on this exact setup! I was searching because I wanted to know if it was possible. I found a lot of answers in R/C hobby forums saying that "it's not possible due to parasitic loss." I was skeptical so it's awesome to see you're doing this!! Thanks! Excellent content!
As an aerospace student this is by far my favorite engineering channel on UA-cam. I hope it grows so more people can get such good information quality and content.
Thank you. As we grow we will also be able to expand our production of new content. This takes time and money. We have dozens of projects mapped out and some in the works.
Observation. EDF fans are optimized for high velocity low pressure flow. Just the opposite of your needs for high pressure combustion. Expand the flow post EDF prior to combustion to obtain any usable pressure/compression, rather than accelerate with the cone which further accelerates/drops the already low pressure flow.
Velocity, whether it is in a spiral flow channel or an axial pipe can be converted to pressure when it slows. You are correct that these fans are optimized, but it is for thrust, not velocity. They move too much air and they don't accelerate it enough. Running them beyond spec and two in series helps. The expansion you describe is exactly what is accomplished as the air passes the lip of the cone prior to combustion.
Watching this thread with interest. Basically I am wondering if the back pressure on the EDF's is too high to let them work effectively. Would some type of centrifugal blower be better? Not my area of expertise, though.
These are interesting points, but you are focusing on secondary issues. Turbulence is necessary for the burn process and homogeneous mixing of the fuel with the air will not occur with a gradual laminar flow pattern. It is difficult to maintain a flame front even with the shadow of the cone. This is not simply speculative, we tried it. This engine can operate with a diffuser section as you describe and employ traditional bar shaped flame holders, but any flow resistance in this turbulent region lowers mass flow and thrust, requiring a large burn chamber diameter to reduce the velocity. We found a 30cm diameter tube was required to eliminate this loss. It comes down to practical trade offs.
We tested these fans on the bench to see how effective this non optimized type of blower could be. You are correct that a centrifugal blower would be better, however both types of compressor designs need to operate at very high speed before they begin to be useful. The advantage of the EDF is its availability, compact profile and in the case of these JP Hobby fans, its extremely high power handling capability.
Oh my GOD such a tease! I REALLY want to see this in action RIGHT NOW. You've hyped me up so much with the description and the ammount of thought that went into this engine.
Your videos are my favorite things on YT. Each time, not only do I learn something, but I am excited/deluded into thinking I might actually be able to try replicating some of them. Tremendous thanks for your efforts and willingness to share your deep/vast lore!
So excited for part 2!!! This is such a tease. Like your girl getting all dolled up to go out with you, and then letting you know she has her period, or a UTI.
@@TechIngredients Like you're all ready to get some when you get home later, and then you find out. It's not happening. So you've got to look at her all night looking beautiful knowing you can't rip her sexy outfit off later, like you normally would. Same here. You get see all this cool tech you built, but no video of it running. Like I thought I was going to see, when I clicked on the video. Both a big tease. Get it now?
@@TechIngredients Lol As long as it didn't make it burn when you went to the restroom. I think you're good. 🤣🤣🤣 Alright. Now stop chatting with all of us, and get to that video please. I can't wait. I love all the design improvements. I hope it all helps. 🙂
Very interesting project. It brings back memories of my research when designing a completely new type of engine. Here are a few observations that may improve your understanding of what's going on....... 1) The electric "Prop in a Tube" RC model fan can not even come close to the pressure that you need. When you are creating additional "volume OR pressure" by burning fuel in a tube that is essentially "closed-off on one end" by the electric fan, you will simply put the fan blades into a "stalled" condition, which reduces the amount of oxygen available for combustion. The electric fans may be just fine when used as "starter motors", but they are not capable of generating much pressure, regardless of how much power you may be able to cram into them. 2) Combustion occurs much faster and more efficiently when you increase the pressure rather than just creating great wads of additional volume at lower pressure. Therefore, you must have a compressor that can generate high pressures without stalling. The higher the pressure is, the less physical space/length/volume you need to burn a given amount of fuel. 3) Military Jet engines are built the way they are because that's the only way they can make them work reliably. The Military really doesn't care much about efficiency, if you what anything even remotely efficient you will have to go to a Turbo-Fan engine, like the ones used on every commercial airliner. 4) Your engine will not have stable operation at higher outputs if you don't use something better than the electric fans you have now. They are the number one limiting factor. 5) You should check-out this combustion chamber design on Google...... SPRF "Stagnation Point Reverse Flow", unfortunately, most of the good research PDFs have been removed by Google and put on sale. 6) Your water jacket cooling is a good idea, but I would execute it differently. The most important thing to do is to keep ALL heat inside the engine. The engine should be insulated. Water injection should be used to keep peak combustion temperatures down to a safe level. 7) Axial Compressors/Turbines are really sexy, but they have a narrow operating range and are not very efficient when compared to a similar setup using positive displacement Vane or Screw Compressors/Motors. 8) The reason you need a variable outlet nozzle is because the compressor section has very limited pressure generating capabilities. The extra pressure that you would normally get from adding more fuel (after-burner) would stall the compressor, so you have to relieve that pressure by opening the nozzle. So, you still have the same pressure at the nozzle, but with more volume. This is not a factor when using positive displacement compressors/motors, they just make more pressure. . .
To begin, the axial fans are not optimized for compression. They tend to move a lot of air, but do not reach a very high velocity. This is best for electric-only thrust on an RC model. However, at very high settings the velocity becomes significant and potential compression is proportional to the square of the velocity. These particular fans are extremely powerful and each stage in the series arrangement is able to achieve 2 PSI gauge/stage. The higher the compression ratio, the more efficiently thermal energy can be converted into kinetic energy and with a fixed amount of mass, the higher the velocity and hence thrust. These electric motors do not achieve a high compression ratio, its actually quite low as jet engines go, but compression does occur and the thrust does increase. You are correct that we want the exhaust gasses to be as hot as possible. Possible is the operative word, without active cooling we nearly melted our first version of this engine. Some method of bypass cooling is necessary. We may elect to change from water to bleed air from the first fan to simplify the system. We may also convert from a steel flame tube to ceramic one allowing higher temps. My understanding of what is going on is reasonably clear. When you see part two, this may help to highlight the strategies and the principles.
The Combustor design that I referenced runs at substantially lower temps, you may want to look at that. The Ceramic Coating is excellent, the next step is concentric tubes with water between them, which will then be converted to steam, adding lots of "volume OR pressure", and further reducing peak temps. The efficiency gain/loss from the water is around zero. You will need a positive displacement water pump that can easily overcome the internal pressure of the engine, while at the same time providing accurate metering, which should be roughly 50% water, by weight, when using liquid Gasoline/Diesel/Kerosene. The volume of water is related to the BTU content of the fuel. As far as combustion temps, I think I wasn't clear enough. The object is to convert temperature into "volume OR pressure". The fuel is actually creating mostly Super Heated Steam as a byproduct of combustion. Adding water just creates more steam without as much Super-Heat. Yes, that is Steam that is melting that metal tube. When you create Super-Heated Steam you are wasting energy. The excess heat only has one thing to expand to create "volume OR pressure", and that is the nitrogen in the intake air that was NOT part of the combustion process, so all that excessive heat doesn't have any additional materials that can covert that heat into additional "pressure OR volume", that's where the water comes in. Gases increase "pressure OR volume", with additional heat added, at a linear rate. But, water increases in volume 1600 times when it flashes into steam. Unfortunately, there's no free lunch, it takes some serious BTUs to take water from "room temperature" to ABOVE 100 degrees C. But if you really could use some temperature management, you may as well take away some of that heat with water, so that you will add enough BTUs to the water to get it close to flashing into steam, which can then be used as additional material for "expansion OR pressure". Therefore better utilizing the available Super-Heat contained in the combustion steam. "Theoretically", there should be no reason for the exhaust temps to be over ~105 C, if they are, you are just throwing away energy, but actually pulling this off is another story. I designed an engine that comes close to this, but it's for rotational power, not jet propulsion, and, believe it or not, it uses 200 year old steam engine technology to achieve ~80% efficiency. Which brings me back around to the "keeping the heat in the engine" thing, this is simply an efficiency thing. You don't necessarily want the peak exhaust temps to be as high as possible. If you will read-up on the "Stagnation Point Reverse Flow" Combustor you will see that there are other factors involved in the combustion process besides just "peak temps". Certain parts of the combustion process take substantially more TIME to complete, this releases more energy where you want it, rather than blowing flames out of the tail-pipe. If you can see flames, you are wasting energy and loosing power. The higher the compression ratio is, the faster the combustion process will occur, it will be totally complete, way before reaching the tail-pipe, AND, you can either have a smaller combustion chamber, OR, you can burn more fuel. If you are heating the surrounding air to ridiculously high temps, your engine will be inefficient. That energy needs to be going towards making something expand in volume or increase in pressure. You will never have more pressure at the exhaust nozzle than the compressor can create, just more volume. My engine design has a compressor that can create over 400psi @ 500cfm and creates super heated steam at 400psi, which is expanded (and therefore reduced in pressure) in 6 stages. The exhaust is at, or slightly below, atmospheric pressure, and is already mostly water. The remaining steam/water vapor is condensed and recycled back into the engine, the few odd remaining exhaust gases are vented to the atmosphere, which are mostly CO2, which is good for anything that's green. No water is lost or has to be added, the water generated during the combustion process is in excess of the losses to the atmosphere. The unwanted pollutants in the other odd exhaust gases are virtually non existent. You are literally building a Steam Engine, (of sorts), thinking of it in this way may be beneficial to you . . .
The only reason I stopped being an ME, and killed that guy to get into the corporate side, was to accumulate the freedom (read: $) to do what you are doing. Then, delayed kid production pushed that plan into the “maybe I’ll live long enough to get there” plan...so, for now, your channel makes me alternate between jealousy and feelings of hope. Great stuff. Keep it coming, for all of us who gladly accept getting yelled at for being too involved in 3rd grade science projects. Go Blue.
Every video in this channel's library is fantastic. Perfect mix of technical information, practical building and good editing. Keep up the excellent production; I imagine this channel's subscriber base will grow rapidly. Tech Ingredients is my new favourite channel!
I've seen a few videos so far in which I am now subscribed, but the beginning of this video makes me want to say that this guy is a mechanical engineering version of Heisenberg from Breaking Bad.
Do you know the feeling when you get all gigely the longer the videos Goes On, and In The End you have to make a verbale outburst as the details Goes On. so sweet and ,that only Happens a couple of times per month Thank you for the video
You keep surprising me. I love to watch your video's. I really have a hard time finding appropiate words to express my appretiation of your work and knowledge. It may seem strange but - to be honest - I feel proud to know You, even if it is only knowing You from UA-cam. The day I found your channel was one of the luckiest im my life. Thank You!
I've watched over a dozen of your videos back to back... Content is just absolutely amazing thank you so much for all of this information. You havent said your name yet though. You cought my attention with the boat... It was in the background... When you described the tesla battery i put my phone down. Subscribed by the end of it. Thank you again sir. Have a good evening as well.
Doesn't propane dissolve petroleum based lubricants? I guess if the heat of the engine would make the oil grease too thin for it to contain anyway, it wouldn't make a difference. If the bearing can hold onto the grease at a high temp, it is totally capable of also keeping the propane out.
I notice the original fan had stationary veins that are designed to reduce the vortex, this is at the expense of pressure ratio. The next step description is spot on. the stator is almost as important to building compression and volume as blade design attributes of each fan. It is easier to have both driven fans on same shaft design. You have to have data logger on both motors to tune the dual driven fans and the dual attribute makes it difficult to tune and not damage esc;s or explode fans. Adding mass to intake works with centrifical vacuum pumps with low air volume. good luck hope you read this and it helps.
I can only strive to become as intelligent as yourself! thank you for your in depth descriptions and really explaining all outcomes and experience's you've had, thank you again and keep up the amazing work! Really looking forward to part two
wow, best depot level explained! NIce counter clockwise on upper and lower EDFs making stator compression. I'd add another larger EDF front of your stator compression for high air flow bypass to cool your upper and lower exterior stator edf compressors to your AB. If you had LPT section + drive shaft to drive front compressors you'd get over 420% more compression over EDF, i applaud you.
I love the nitrous oxide idea. But we'll see when you get there. Again, very interesting and I am anxiously awaiting the results. Keep it up 👍. And thank you for your most interesting and entertaining projects. And a huge thanks to you for not filling your videos with annoying music.
Do you Know whats funny, at about 8:18 I was telling my screen that you needed to coat the tube with spray ceramic, then you said you did so I was like smart man. Then @9:25 I got excited and was yelling OH he bout to say NOS or LOX injection and got mad when you said liq propane. Then you said NOS later @11:21 and I was pretty much mollified and said well this guy knows his stuff LOL. Dude, as a former USAF fighter crew chief I thank you for bringing back old memories of engine build up/maintenance, even if it is in miniature LOL. Also thanks for the vids you did on the "Worlds Best Speakers" cause of that I'm using two 4' by 8' foam panels, two 48" by 24" ceiling panels and four DAEX25X4-4 exciters with the panels all custom painted, and coupled with an old sub-woofer they sound amazeballs in my small space. Really, I can't thank you enough for that cause it was either cheapo bookshelf things that came with my amp settup, or spend a few hundred to a thousand for better ones. I prefer the choice you gave me LOL. I love this channel keep up the good work.
Such wonderfully explained and produced content. Amazing job I know nothing about jet engines, but you present this material in such an interesting manner I feel like I actually learned something. You and your boys would make Albert Einstein proud.
You don't have stators, so you don't have compression. Prove me wrong by plumbing a pressure gauge into the discharge area of the second fan. Opening should be flush with the wall of the casing, so you measure static pressure, not facing into the airstream like a pitot tube, which measures pressure rise due to velocity of the gas stream. Nice machine work.
love your content and I believe you aare very knowledgable whenit comes to gas turbine engines but Ithink you may have it wrong with this one they is some compression due to the counter rotating fans eliminating the need for stators there's quite a bit of research regarding counter rotating compressors you may find interesting
Actually, a flow surrounding any airfoil (fan or compressor whatever that has a positive angle of attack) compressed by it. As you may know at the bottom of the airfoil has higher pressure than the other so it acts as a compressor.
@@jwh103 air on the bottom of a an airfoil is at atmospheric pressure it's the air that's at the top that has a lower pressure due to the coanda effect
AgentJayZ, I enjoy your channel very much and have learned quite a lot, very informative. As for the stator only providing compression Im thinking that that it is a matter of relative rotation of turbine to engine housing stator blades. let me try to explain my thought.. Imagine that you made an hypothetical engine that operates a turbine at some rpm clockwise, now consider this engine while it is operating at this rpm you start to spin the entire engine housing counterclockwise increasing the spin up to what was the original rpm of the turbine (ignoring all the impractical issues to do so) . while spinning the housing at the counter clockwise rpm equivalent to the initial turbine you observe the turbine is now stationary relative to an outside observer, but the turbine spin relative to the engine housing is stlll the same. Take it a step further by spinning the housing at 1/2 the original rpm counterclockwise, and now an outside observer would see the turbine rotating at at 1/2 speed clockwise, but the relative rotation of the turbine to the housing is again the same.
You’re such a cool ass Dad!! I REALLY TRULY hope to god your son(s) know realize how lucky they are to have a pops like you!!! Im always mesmerized by your scientific knowledge and info. Seems you guys have started slowing down. But I’d greatly appreciate if you’d keep coming with the projects. Im an ole Pyro and I don’t have any kids. But I DO like doing allot of cool lil science and educational projects with the neighbor kids. It keeps them out of trouble, reaches them something, I learn as well and I just enjoy the lil projects. So you are def appreciated! And the world is a much better place Bc if you and your good energy.
Thanks! We're not slowing down, but the videos represent a mix of some easier projects and some really complicated ones. Depending what's in the works, we may post more or less often.
Sounding like you are on a good track. Know you know, there is a weight cost for liquid NOX plus a number of efficiency cost associated with 7kw power but still intriguing concepts. Best wishes for your Journey.
I cannot wait to see this running! My only concern is that of the liquid propane causing the EDF blades to become brittle (that is assuming they are plastic), also there will be condensation issues inside the motor everything you turn the system off unless you have a "warm up" time after where you throttle down and turn off the liquid propane. I bet you thought of this though, so I eagerly look forward to seeing how you worked around these potential problems.
JP EDF units are all aircraft aluminum. This will still occur to a degree, but much tougher than plastic. Aluminum is a much better material (especially when used for their intended purpose), because even though a high-quality BLDC motor is over 90% efficient, there are still 5000 watts going through there. At 90% efficiency, that's 500W of pure thermal energy they must dissipate. That's like a space heater on low.
The outgoing gas can be used to suck cool air, cool air that can first bypass the engine to cool it. And adding this airmass to the outgoing jet of gas, may increase the amount of thrust. I love your experiments!
Nerd pron! Currently junior ME major. This is the kinda stuff I wish to do in my own shop some day. Keep the videos coming. I know they can't be cheap to produce..
That's great! You're correct, they are costly in both time and money, but the results and the comments are very gratifying. As this channel grows and it's growing very rapidly, we will be able to invest even more to produce interesting videos.
Sir, I have not one iota of a smidgeon of a piece of an idea when I will _ever_ need to know this. I really cannot imagine when or why, in the course of my mostly-left life, I would utilize this kind of know-how. But you bet your ass that when that fated day comes anyways...boy I'm gonna be so friggin' glad I watched these videos. Won't catch me not knowing how to make a turbo-charged jet engine, no sir! Edit: or the term - "Flame Tube" metal af
Have you considered letting the engine heat up using propane then running a liquid fuel through the cooling tube to vaporize it to feed back into the engine?
I'm excited to see this new version running. You've clearly put a lot of thought into this. I'd be a little concerned that the liquid propane might wash the lubricant out of the bearings in the EDFs. Those bearings are usually only shielded and not sealed, so a fluid like propane would have little trouble finding its way in and diluting the lubricant. I would want to try placing a few different oils and greases in some liquid propane to see if / how quickly they dissolve.
@@TechIngredients Also, I suggest turning down the music during the intro about 3dB, and maybe throwing some light compression on the music track when it's in the background.
We are going to need you to add sound effects please. The sound of a jet turbine winding up is one of the most joyous sounds known to man and it represents at least 50% of awesomeness of a jet engine :-P
Really looking forward to the 100-200 lb thrust build you teased. I'm curious to see what tweaks you apply in a larger build. I would be interested in further development of this concept for application on something along the lines of an Ultralight aircraft project.
I wonder if a motor/compressor/impeller (probably not the correct terminology for that...) from a high-volume industrial vacuum (or shopvac, home vac?) would work for the first stage? May be worthwhile for cost effectiveness as well as easy to source. I love your channel. You seem to be perfectly in tune with my interests & experimental urges. Nice to know there’s another mind of the same ilk somewhere out there!
Thanks! Industrial vacuum motors with their centrifugal compressors would be superior in design, but their weight and power handling capabilities are just too far out of the useful range.
@@TechIngredients part of me wants to argue that. However, I initially suspected the same issue(s) as well. I trust your opinion to be well thought, and based upon sound reasoning & reliably known theory. Might one assume that the ultimate goal is to have a unit which operates within a power/weight ratio equal to current aircraft standards?
Many many moons ago when I was the proud owner of a 50cc Garelli moped, I used to find the engine performance way better on a foggy day. Im not sure bit this was possibly due to the water vapour increasing compression ratio and/ or the water droplets vaporising into steam when the engine fired. Would the same be true of a jet engine without a closed combustion chamber?
The channel Greg's Airplanes and Automobiles just released a video on this very subject (MW50) of gaining HP through only water injection. 0.3:1 to 0.6:1 Water:Air mass seems to be the sweet spot for piston engines. I have no idea if this increases HP of a turbine. ua-cam.com/video/1PA70pN6zPM/v-deo.html
One of the best upcoming channels on UA-cam. Thanks for the great content
That's great to hear. I think we may be on the way.
@@TechIngredients you are absolutely! I cant get enough of this channels videocontent (exept the smokebombs maybe, ánd i am still waiting for the next video about how good or bad the fluidpumpaction will be with that six enormous neodyniummagnets around that fluidchannel? That was a great idea&making to watch en could only get greater so i can not wait longer to see more of it!)
I am very sure you are! This is indeed one of the last remaining high quality, original content channels and i hungrily wait for each video you put out there.
Agreed, LordSlak.
The smoke bombs were excellent (as well). Variety is the spice of life as they say.
To be honest, you have rekindled my desire to go back to college and finish my mechanical engineering degree. Your videos are informative, and are very interesting to watch.
what I really appreciate is the fact that he cools down the information enough to where someone like me with barely any mechanical engineering knowledge can understand it, yet he doesnt dumb it down to the point where youre losing a significant amount of important information
That's good. Even if you decide not to go that route its good that your enthusiasm for the field has increased.
learn it all here and not accrue a bunch of college debt to end up working at a gas station anyway
I have just graduated with a mechanical engineering degree and it's one of the few degrees where most of the things you learn are actually things you do on a daily basis. Definitely worth it in my opinion
Good luck to you.
Remember to measure the thrust. I would like to see a comparison of the thrust of the EDFs alone vs. the jet engine assembly. Stay safe and I'm looking forward to see the next video.
Thank you! Luckily, we did that exactly. Before adding any fuel, we tested the EDFs by themselves and measured the thrust in the next upcoming video. Stay tuned :)
I'll be staying as tuned as possible! I love your channel. Thanks for sharing all your awesome projects :-)
I still can't believe this is a new channel. You guys are just the best! I truly hope you'll keep the format open and inviting and it the spirit of learning.
Gotta say, as a first year aerospace engineering student, I love that these videos are both accessible to someone who is just starting to learn these concepts but are also super informative and not just some wahoo playing with fire. Jet engines are not easy concepts to explain but you definitely make it seem intuitive.
Thank you.
You know what, I've been looking for "this" video for years. Just having someone knowledgeable explain the building process and tinkering with a home made jet engine. What can I say. Thank you from the bottom of my heart!
You're welcome.
This channel is incredible. Definitely one of the best I've seen on UA-cam. You are very talented at explaining how things work in a concise and easy to understand way. Thank you for doing this!
Thank you!
Do you have a video where you discuss your work history/experience? I think it would be very interesting to hear how you've acquired the knowledge you have. You're clearly a very brilliant thinker and I love watching your videos!
Yeah, I'd be interested as well in knowing what/how/who/where
Bet plenty of other folks would be interested in such a video as well
Thank you so much for the quality content. You remind me of one of my favorite professors from back in college, it's really relaxing and informative to just sit back and watch your videos. By the way, whoever does your camera work knows what they're doing and they deserve recognition. Cameraman/woman, bravo! Great work on the engine, I've been messing around with the same concepts on my farm and so far I've got one hell of a leaf blower. Cheers!
i was literally just searching for information on this exact setup! I was searching because I wanted to know if it was possible. I found a lot of answers in R/C hobby forums saying that "it's not possible due to parasitic loss." I was skeptical so it's awesome to see you're doing this!! Thanks! Excellent content!
They're wrong. Sometimes you just have to resort to testing an idea.
As an aerospace student this is by far my favorite engineering channel on UA-cam. I hope it grows so more people can get such good information quality and content.
Thank you. As we grow we will also be able to expand our production of new content. This takes time and money. We have dozens of projects mapped out and some in the works.
You have some of the best content I have seen on UA-cam. Thank you for sharing your knowledge!
Man, I wish he was my tutor back in college.
Great way of explaining everything in a interesting & understandable way
Thanks, that's good to hear.
Observation. EDF fans are optimized for high velocity low pressure flow. Just the opposite of your needs for high pressure combustion. Expand the flow post EDF prior to combustion to obtain any usable pressure/compression, rather than accelerate with the cone which further accelerates/drops the already low pressure flow.
Velocity, whether it is in a spiral flow channel or an axial pipe can be converted to pressure when it slows. You are correct that these fans are optimized, but it is for thrust, not velocity. They move too much air and they don't accelerate it enough. Running them beyond spec and two in series helps. The expansion you describe is exactly what is accomplished as the air passes the lip of the cone prior to combustion.
Watching this thread with interest. Basically I am wondering if the back pressure on the EDF's is too high to let them work effectively. Would some type of centrifugal blower be better? Not my area of expertise, though.
These are interesting points, but you are focusing on secondary issues. Turbulence is necessary for the burn process and homogeneous mixing of the fuel with the air will not occur with a gradual laminar flow pattern. It is difficult to maintain a flame front even with the shadow of the cone. This is not simply speculative, we tried it. This engine can operate with a diffuser section as you describe and employ traditional bar shaped flame holders, but any flow resistance in this turbulent region lowers mass flow and thrust, requiring a large burn chamber diameter to reduce the velocity. We found a 30cm diameter tube was required to eliminate this loss. It comes down to practical trade offs.
We tested these fans on the bench to see how effective this non optimized type of blower could be. You are correct that a centrifugal blower would be better, however both types of compressor designs need to operate at very high speed before they begin to be useful. The advantage of the EDF is its availability, compact profile and in the case of these JP Hobby fans, its extremely high power handling capability.
When you see the engine operate in part two of this video, you will see that in fact the burn does occur in a pretty small area within the engine.
Oh my GOD such a tease!
I REALLY want to see this in action RIGHT NOW.
You've hyped me up so much with the description and the ammount of thought that went into this engine.
Imagine how excited he is! He needs to contain his excitement so he doesn't screw it up with the old get it done itis.
I feel the same....great stuff.
I wouldn't worry about him, He's never done anything half assed and doesn't seem like someone who would even consider it.
Your videos are my favorite things on YT. Each time, not only do I learn something, but I am excited/deluded into thinking I might actually be able to try replicating some of them.
Tremendous thanks for your efforts and willingness to share your deep/vast lore!
You're welcome and thanks!
So excited for part 2!!! This is such a tease. Like your girl getting all dolled up to go out with you, and then letting you know she has her period, or a UTI.
Great! I'm not sure about the analogy.
@@TechIngredients Like you're all ready to get some when you get home later, and then you find out. It's not happening. So you've got to look at her all night looking beautiful knowing you can't rip her sexy outfit off later, like you normally would.
Same here. You get see all this cool tech you built, but no video of it running. Like I thought I was going to see, when I clicked on the video.
Both a big tease. Get it now?
Oh, I got it the first time! Just being compared, even remotely, to a urinary tract infection made me a little "itchy"...if you know what I mean.
@@TechIngredients Lol
As long as it didn't make it burn when you went to the restroom. I think you're good. 🤣🤣🤣
Alright. Now stop chatting with all of us, and get to that video please. I can't wait. I love all the design improvements. I hope it all helps. 🙂
I learnt more in these 13 minutes than I ever could have from someplace else.
Very interesting project.
It brings back memories of my research when designing a completely new type of engine.
Here are a few observations that may improve your understanding of what's going on.......
1) The electric "Prop in a Tube" RC model fan can not even come close to the pressure that you need.
When you are creating additional "volume OR pressure" by burning fuel in a tube that is
essentially "closed-off on one end" by the electric fan, you will simply put the fan blades into
a "stalled" condition, which reduces the amount of oxygen available for combustion.
The electric fans may be just fine when used as "starter motors",
but they are not capable of generating much pressure,
regardless of how much power you may be able to cram into them.
2) Combustion occurs much faster and more efficiently when you increase the pressure rather than just
creating great wads of additional volume at lower pressure.
Therefore, you must have a compressor that can generate high pressures without stalling.
The higher the pressure is, the less physical space/length/volume you need to burn a given amount of fuel.
3) Military Jet engines are built the way they are because that's the only way they can make them work reliably.
The Military really doesn't care much about efficiency, if you what anything even remotely efficient
you will have to go to a Turbo-Fan engine, like the ones used on every commercial airliner.
4) Your engine will not have stable operation at higher outputs if you don't use something
better than the electric fans you have now.
They are the number one limiting factor.
5) You should check-out this combustion chamber design on Google...... SPRF "Stagnation Point Reverse Flow",
unfortunately, most of the good research PDFs have been removed by Google and put on sale.
6) Your water jacket cooling is a good idea, but I would execute it differently.
The most important thing to do is to keep ALL heat inside the engine.
The engine should be insulated.
Water injection should be used to keep peak combustion temperatures down to a safe level.
7) Axial Compressors/Turbines are really sexy, but they have a narrow operating range and are not very efficient
when compared to a similar setup using positive displacement Vane or Screw Compressors/Motors.
8) The reason you need a variable outlet nozzle is because the compressor section has
very limited pressure generating capabilities.
The extra pressure that you would normally get from adding more fuel (after-burner) would stall the compressor,
so you have to relieve that pressure by opening the nozzle.
So, you still have the same pressure at the nozzle, but with more volume.
This is not a factor when using positive displacement compressors/motors, they just make more pressure.
.
.
To begin, the axial fans are not optimized for compression. They tend to move a lot of air, but do not reach a very high velocity. This is best for electric-only thrust on an RC model. However, at very high settings the velocity becomes significant and potential compression is proportional to the square of the velocity. These particular fans are extremely powerful and each stage in the series arrangement is able to achieve 2 PSI gauge/stage.
The higher the compression ratio, the more efficiently thermal energy can be converted into kinetic energy and with a fixed amount of mass, the higher the velocity and hence thrust. These electric motors do not achieve a high compression ratio, its actually quite low as jet engines go, but compression does occur and the thrust does increase.
You are correct that we want the exhaust gasses to be as hot as possible. Possible is the operative word, without active cooling we nearly melted our first version of this engine. Some method of bypass cooling is necessary. We may elect to change from water to bleed air from the first fan to simplify the system. We may also convert from a steel flame tube to ceramic one allowing higher temps.
My understanding of what is going on is reasonably clear. When you see part two, this may help to highlight the strategies and the principles.
The Combustor design that I referenced runs at substantially lower temps, you may want to look at that.
The Ceramic Coating is excellent, the next step is concentric tubes with water between them,
which will then be converted to steam, adding lots of "volume OR pressure",
and further reducing peak temps.
The efficiency gain/loss from the water is around zero.
You will need a positive displacement water pump that can easily overcome the internal pressure
of the engine, while at the same time providing accurate metering,
which should be roughly 50% water, by weight, when using liquid Gasoline/Diesel/Kerosene.
The volume of water is related to the BTU content of the fuel.
As far as combustion temps, I think I wasn't clear enough.
The object is to convert temperature into "volume OR pressure".
The fuel is actually creating mostly Super Heated Steam as a byproduct of combustion.
Adding water just creates more steam without as much Super-Heat.
Yes, that is Steam that is melting that metal tube.
When you create Super-Heated Steam you are wasting energy.
The excess heat only has one thing to expand to create "volume OR pressure",
and that is the nitrogen in the intake air that was NOT part of the combustion process,
so all that excessive heat doesn't have any additional materials that can covert that heat
into additional "pressure OR volume", that's where the water comes in.
Gases increase "pressure OR volume", with additional heat added, at a linear rate.
But, water increases in volume 1600 times when it flashes into steam.
Unfortunately, there's no free lunch, it takes some serious BTUs to take water from
"room temperature" to ABOVE 100 degrees C.
But if you really could use some temperature management, you may as well take away some
of that heat with water, so that you will add enough BTUs to the water to get it close to
flashing into steam, which can then be used as additional material for "expansion OR pressure".
Therefore better utilizing the available Super-Heat contained in the combustion steam.
"Theoretically", there should be no reason for the exhaust temps to be over ~105 C,
if they are, you are just throwing away energy, but actually pulling this off is another story.
I designed an engine that comes close to this, but it's for rotational power, not jet propulsion,
and, believe it or not, it uses 200 year old steam engine technology to achieve ~80% efficiency.
Which brings me back around to the "keeping the heat in the engine" thing,
this is simply an efficiency thing.
You don't necessarily want the peak exhaust temps to be as high as possible.
If you will read-up on the "Stagnation Point Reverse Flow" Combustor you will see
that there are other factors involved in the combustion process besides just "peak temps".
Certain parts of the combustion process take substantially more TIME to complete,
this releases more energy where you want it, rather than blowing flames out of the tail-pipe.
If you can see flames, you are wasting energy and loosing power.
The higher the compression ratio is, the faster the combustion process will occur,
it will be totally complete, way before reaching the tail-pipe, AND, you can either have a
smaller combustion chamber, OR, you can burn more fuel.
If you are heating the surrounding air to ridiculously high temps, your engine will be inefficient.
That energy needs to be going towards making something expand in volume or increase in pressure.
You will never have more pressure at the exhaust nozzle than the compressor can create, just more volume.
My engine design has a compressor that can create over 400psi @ 500cfm and creates
super heated steam at 400psi, which is expanded (and therefore reduced in pressure) in 6 stages.
The exhaust is at, or slightly below, atmospheric pressure, and is already mostly water.
The remaining steam/water vapor is condensed and recycled back into the engine,
the few odd remaining exhaust gases are vented to the atmosphere,
which are mostly CO2, which is good for anything that's green.
No water is lost or has to be added, the water generated during the combustion process
is in excess of the losses to the atmosphere.
The unwanted pollutants in the other odd exhaust gases are virtually non existent.
You are literally building a Steam Engine, (of sorts),
thinking of it in this way may be beneficial to you .
.
.
The only reason I stopped being an ME, and killed that guy to get into the corporate side, was to accumulate the freedom (read: $) to do what you are doing. Then, delayed kid production pushed that plan into the “maybe I’ll live long enough to get there” plan...so, for now, your channel makes me alternate between jealousy and feelings of hope. Great stuff. Keep it coming, for all of us who gladly accept getting yelled at for being too involved in 3rd grade science projects.
Go Blue.
This is the kind of stuff I used to dream about doing as a kid and here you are doing it.
Me too!
As a Civil Engineer this is itching my internal mechanical engineer self. Why didn't I just become a mechanical engineer? Love this content! Thank you
You're welcome!
legit the amount of information in these videose is unfathomable.
Every video in this channel's library is fantastic. Perfect mix of technical information, practical building and good editing.
Keep up the excellent production; I imagine this channel's subscriber base will grow rapidly.
Tech Ingredients is my new favourite channel!
Thank you!
You're very welcome, and thank you for your content, especially as I know the work involved and the cost of your equipment!
I've seen a few videos so far in which I am now subscribed, but the beginning of this video makes me want to say that this guy is a mechanical engineering version of Heisenberg from Breaking Bad.
This is almost the same principle of the '30 Campini Caproni Italian jet pioneers, great work very instructive, thanks for all your effort.
Do you know the feeling when you get all gigely the longer the videos Goes On, and In The End you have to make a verbale outburst as the details Goes On. so sweet and ,that only Happens a couple of times per month
Thank you for the video
I'm just finishing my mechanical engineering degree. I watched your distilling alcohol video I had no idea you did things like this! Subscribed
You keep surprising me. I love to watch your video's. I really have a hard time finding appropiate words to express my appretiation of your work and knowledge. It may seem strange but - to be honest - I feel proud to know You, even if it is only knowing You from UA-cam. The day I found your channel was one of the luckiest im my life. Thank You!
Wow, Thanks!
You're an inspiration to all the DIY scientists out here. Please keep it up.
This is right on the cutting edge of science. Metallurgy machining and just plain fun! I cant wait for the next video!!!!!
Thanks!
I love the amount of detail you go into in your videos
My inner nerd gets so fascinated and excited in these videos, looking forward to see the version 2 working, keep up with this amazing project.
I've watched over a dozen of your videos back to back... Content is just absolutely amazing thank you so much for all of this information. You havent said your name yet though. You cought my attention with the boat... It was in the background... When you described the tesla battery i put my phone down. Subscribed by the end of it. Thank you again sir. Have a good evening as well.
Caught*
Thanks!
What is the liquid propane going through the motors going to do to the lubrication in the bearings?
I would imagine they use sealed bearings and those need to be cooled as well so whatever lubricant they use doesn't get too thin from overheating.
Doesn't propane dissolve petroleum based lubricants? I guess if the heat of the engine would make the oil grease too thin for it to contain anyway, it wouldn't make a difference. If the bearing can hold onto the grease at a high temp, it is totally capable of also keeping the propane out.
There are plenty of inert synthetic greases such as Krytox which won't wash out.
omg feed fuel into compressor when did this turn into a bomb. I think the title is hybed jet engine yup checked it it reads hybred jet engine
If they fail, go ceramic. Plenty of those in the hobby.
I notice the original fan had stationary veins that are designed to reduce the vortex, this is at the expense of pressure ratio. The next step description is spot on. the stator is almost as important to building compression and volume as blade design attributes of each fan. It is easier to have both driven fans on same shaft design. You have to have data logger on both motors to tune the dual driven fans and the dual attribute makes it difficult to tune and not damage esc;s or explode fans. Adding mass to intake works with centrifical
vacuum pumps with low air volume. good luck hope you read this and it helps.
I can only strive to become as intelligent as yourself! thank you for your in depth descriptions and really explaining all outcomes and experience's you've had, thank you again and keep up the amazing work! Really looking forward to part two
Thank you! I think you'll like it.
wow, best depot level explained! NIce counter clockwise on upper and lower EDFs making stator compression. I'd add another larger EDF front of your stator compression for high air flow bypass to cool your upper and lower exterior stator edf compressors to your AB.
If you had LPT section + drive shaft to drive front compressors you'd get over 420% more compression over EDF, i applaud you.
Fascinating! I can't wait to see the followup. Keep up the great work!
Awesome! It's inspiring to see a completely different take on building a jet engine and new systems being tested.
Thanks!
By the way, we are nearing completion of a compact DIY turbo shaft engine for an up coming video.
I love the nitrous oxide idea. But we'll see when you get there. Again, very interesting and I am anxiously awaiting the results. Keep it up 👍. And thank you for your most interesting and entertaining projects. And a huge thanks to you for not filling your videos with annoying music.
Do you Know whats funny, at about 8:18 I was telling my screen that you needed to coat the tube with spray ceramic, then you said you did so I was like smart man. Then @9:25 I got excited and was yelling OH he bout to say NOS or LOX injection and got mad when you said liq propane. Then you said NOS later @11:21 and I was pretty much mollified and said well this guy knows his stuff LOL. Dude, as a former USAF fighter crew chief I thank you for bringing back old memories of engine build up/maintenance, even if it is in miniature LOL. Also thanks for the vids you did on the "Worlds Best Speakers" cause of that I'm using two 4' by 8' foam panels, two 48" by 24" ceiling panels and four DAEX25X4-4 exciters with the panels all custom painted, and coupled with an old sub-woofer they sound amazeballs in my small space. Really, I can't thank you enough for that cause it was either cheapo bookshelf things that came with my amp settup, or spend a few hundred to a thousand for better ones. I prefer the choice you gave me LOL. I love this channel keep up the good work.
Very well explained Sir! You hardly find such detailed videos on youtube.
I've followed you from you LPF forums posts. You have some damn good content and cool "toys" that few can build/use.
Thanks!
I would love to see an interview of your dad. I'm so curious about his education and knowledge on so many various scientific topics.
That is mega!! Can't wait to see the fruits of your labours in operation!!
Sooo looking forward to the next one! Brilliant discussion of the idea, the parameters and where testing suggested adjustment. I'm now addicted 😋
Such wonderfully explained and produced content. Amazing job I know nothing about jet engines, but you present this material in such an interesting manner I feel like I actually learned something. You and your boys would make Albert Einstein proud.
One of the best channels on you tube ! Because you Love it we love it, i can see your joy that's what make it great!
This looks amazing. I am learning a lot from this on how I can modify my pulse jet system to factor in your improvements.
Thanks!
We will cover a pulse jet in a future video. There will be some modifications to the fuel and air delivery system as well.
This is fascinating. You've put so much thought into it. I'm interested to see how it turns out! Best of luck.
Thanks!
I just stumbled across this video. As a mechanical engineer, its a given that I had to be a subscriber! Great video. Kind regards/ Sweden
Thank you.
You don't have stators, so you don't have compression. Prove me wrong by plumbing a pressure gauge into the discharge area of the second fan. Opening should be flush with the wall of the casing, so you measure static pressure, not facing into the airstream like a pitot tube, which measures pressure rise due to velocity of the gas stream.
Nice machine work.
love your content and I believe you aare very knowledgable whenit comes to gas turbine engines but Ithink you may have it wrong with this one they is some compression due to the counter rotating fans eliminating the need for stators there's quite a bit of research regarding counter rotating compressors you may find interesting
Actually, a flow surrounding any airfoil (fan or compressor whatever that has a positive angle of attack) compressed by it. As you may know at the bottom of the airfoil has higher pressure than the other so it acts as a compressor.
@@jwh103 air on the bottom of a an airfoil is at atmospheric pressure it's the air that's at the top that has a lower pressure due to the coanda effect
It could work if it were built like a ramjet, but the fan still may not be powerful enough to make that work.
AgentJayZ, I enjoy your channel very much and have learned quite a lot, very informative. As for the stator only providing compression Im thinking that that it is a matter of relative rotation of turbine to engine housing stator blades. let me try to explain my thought.. Imagine that you made an hypothetical engine that operates a turbine at some rpm clockwise, now consider this engine while it is operating at this rpm you start to spin the entire engine housing counterclockwise increasing the spin up to what was the original rpm of the turbine (ignoring all the impractical issues to do so) . while spinning the housing at the counter clockwise rpm equivalent to the initial turbine you observe the turbine is now stationary relative to an outside observer, but the turbine spin relative to the engine housing is stlll the same. Take it a step further by spinning the housing at 1/2 the original rpm counterclockwise, and now an outside observer would see the turbine rotating at at 1/2 speed clockwise, but the relative rotation of the turbine to the housing is again the same.
listen! Your are a genius of geniuses!! I work for aerospace during the day but this is something entirely special!
You’re such a cool ass Dad!! I REALLY TRULY hope to god your son(s) know realize how lucky they are to have a pops like you!!! Im always mesmerized by your scientific knowledge and info.
Seems you guys have started slowing down. But I’d greatly appreciate if you’d keep coming with the projects. Im an ole Pyro and I don’t have any kids. But I DO like doing allot of cool lil science and educational projects with the neighbor kids. It keeps them out of trouble, reaches them something, I learn as well and I just enjoy the lil projects. So you are def appreciated! And the world is a much better place Bc if you and your good energy.
Thanks!
We're not slowing down, but the videos represent a mix of some easier projects and some really complicated ones. Depending what's in the works, we may post more or less often.
The ceramic coating made me excited. It makes me imagine if Tesla had a UA-cam Channel.
I think he would fuse atoms with high voltage
Really fun to watch! I love the way you explain things, makes it easy for me to understand.
Excellent production! Looking forward to the completed V 2.0
Super excited to see this run!!
Every Tech Ingredients video blows me away. Consistently leftfield and brilliant.
Thanks! Renaissance science.
The best technology channel on youtube !!!
Thank you!
It's nice to see replies from the provider. Unfortunately, I'm sure once this channel blows up, that will change....
Thank you. Don't be too sure, although we will have to become more selective as the numbers grow larger.
Thank you for making this video and more thoroughly pointing out how things work. Really interesting!
Sure!
Looking forward to seeing you fire this baby up !. Compressing the fule is good !
Sounding like you are on a good track. Know you know, there is a weight cost for liquid NOX plus a number of efficiency cost associated with 7kw power but still intriguing concepts. Best wishes for your Journey.
The content on this channel is perfect keep up the good work
Thanks.
I cannot wait to see this running! My only concern is that of the liquid propane causing the EDF blades to become brittle (that is assuming they are plastic), also there will be condensation issues inside the motor everything you turn the system off unless you have a "warm up" time after where you throttle down and turn off the liquid propane. I bet you thought of this though, so I eagerly look forward to seeing how you worked around these potential problems.
JP EDF units are all aircraft aluminum. This will still occur to a degree, but much tougher than plastic. Aluminum is a much better material (especially when used for their intended purpose), because even though a high-quality BLDC motor is over 90% efficient, there are still 5000 watts going through there. At 90% efficiency, that's 500W of pure thermal energy they must dissipate. That's like a space heater on low.
The outgoing gas can be used to suck cool air, cool air that can first bypass the engine to cool it. And adding this airmass to the outgoing jet of gas, may increase the amount of thrust. I love your experiments!
Nerd pron!
Currently junior ME major.
This is the kinda stuff I wish to do in my own shop some day.
Keep the videos coming. I know they can't be cheap to produce..
That's great!
You're correct, they are costly in both time and money, but the results and the comments are very gratifying.
As this channel grows and it's growing very rapidly, we will be able to invest even more to produce interesting videos.
Keep up the great work! So glad I found this channel.
Thanks!
Well the second model of the turbine engine is pretty impressive already I'm sure you'll get great results! keep up the great work im loving this
Brilliant work. Anxious to see the results.
Thanks! Just hold on a bit longer.
Sir, I have not one iota of a smidgeon of a piece of an idea when I will _ever_ need to know this. I really cannot imagine when or why, in the course of my mostly-left life, I would utilize this kind of know-how.
But you bet your ass that when that fated day comes anyways...boy I'm gonna be so friggin' glad I watched these videos. Won't catch me not knowing how to make a turbo-charged jet engine, no sir!
Edit: or the term - "Flame Tube"
metal af
This is fricken awesome can't wait to see this fired up !
Awesome tinkering with this project!
One of the best upcoming channels on
This is very very interesting. Can’t wait to see it work.
Wow this is a really good video with a really good description of engine process.
Thank you.
Stumbled across this video .......engineering heaven ❤❤❤
Thanks!
Great video and thanks for a very clear demonstration. I am sure that you will get the best possible result at the end. Best of luck and best wishes.
That is very exciting ! Cant wait for the next video !
Already my favorite channel on youtube. Please do a video on ion thrusters!
We just might.
Don't listen to those haters when it comes to a UA-cam Education we can totally learn about jet engine and rocketry physics online!
I too cannot wait till i see its running performances. I hope you upload soon!? Great built so to see so lets see so too
Absolutely magnificent project. I can't wait to see more!
Have you considered letting the engine heat up using propane then running a liquid fuel through the cooling tube to vaporize it to feed back into the engine?
I'm so staying tuned!
this was a very helpful video and hope to see updates in the future, thank you for this update...
That is a very interesting fuel preheat/cool solution on the EDF!
I'm excited to see this new version running. You've clearly put a lot of thought into this.
I'd be a little concerned that the liquid propane might wash the lubricant out of the bearings in the EDFs. Those bearings are usually only shielded and not sealed, so a fluid like propane would have little trouble finding its way in and diluting the lubricant. I would want to try placing a few different oils and greases in some liquid propane to see if / how quickly they dissolve.
That is a risk. If that proves to be a problem and we still want to push it, water would be a good alternative.
@@TechIngredients If it works, it's a very good way to kill two birds with one stone, especially the nitrous oxide version you mentioned.
@@TechIngredients Also, I suggest turning down the music during the intro about 3dB, and maybe throwing some light compression on the music track when it's in the background.
I just might be watching the best videos on YT.
We are going to need you to add sound effects please. The sound of a jet turbine winding up is one of the most joyous sounds known to man and it represents at least 50% of awesomeness of a jet engine :-P
Just hold on for a few more days.
A lot of care and thought has gone into this project!
Compliments and thanks for this usefull video!
You're welcome.
I'm so glad to know this channel!
Absolutely Fantastic!!!! Thank you so much!!!
Sure!
How did you go about applying the Zirconium Oxide?
Really looking forward to the 100-200 lb thrust build you teased. I'm curious to see what tweaks you apply in a larger build. I would be interested in further development of this concept for application on something along the lines of an Ultralight aircraft project.
It was applied for us by a company that sprays it on using a supersonic technique.
I wonder if a motor/compressor/impeller (probably not the correct terminology for that...) from a high-volume industrial vacuum (or shopvac, home vac?) would work for the first stage? May be worthwhile for cost effectiveness as well as easy to source. I love your channel. You seem to be perfectly in tune with my interests & experimental urges. Nice to know there’s another mind of the same ilk somewhere out there!
Thanks!
Industrial vacuum motors with their centrifugal compressors would be superior in design, but their weight and power handling capabilities are just too far out of the useful range.
@@TechIngredients part of me wants to argue that. However, I initially suspected the same issue(s) as well. I trust your opinion to be well thought, and based upon sound reasoning & reliably known theory. Might one assume that the ultimate goal is to have a unit which operates within a power/weight ratio equal to current aircraft standards?
Yes.
Many many moons ago when I was the proud owner of a 50cc Garelli moped, I used to find the engine performance way better on a foggy day. Im not sure bit this was possibly due to the water vapour increasing compression ratio and/ or the water droplets vaporising into steam when the engine fired.
Would the same be true of a jet engine without a closed combustion chamber?
@@ZiggleFingers thats a very cold airfilter?!
piston aircraft use water/ethanol injection to increase power
The channel Greg's Airplanes and Automobiles just released a video on this very subject (MW50) of gaining HP through only water injection.
0.3:1 to 0.6:1 Water:Air mass seems to be the sweet spot for piston engines. I have no idea if this increases HP of a turbine.
ua-cam.com/video/1PA70pN6zPM/v-deo.html
Great work and great video, can't wait for part 2!
Thank you can’t wait to see you run it. Awesome channel, fascinating.
Thanks! You'll be impressed...so were our neighbors, kinda.
This is beyond fascination. Pure passion for first quality engineering.
Thank you!
Josep M Comajoncoses _____ "Quality engineering" ? It is a room heater in a tube.
So is a rocket engine. You wouldn't want to be in any reasonably sized room with either one. In part two, I'll demonstrate what I'm talking about.
Quality engineering produces things that actually work.
You could increase pressure of propane by running thru a heating coil as in the glueharref pressure jet engine...