“Hello. This is part 19 of our reading of the 1974 New York City phone book. In part one…” I’m with you! If I hear him say these words, he gets as much playtime from me as he records. Haha
if someone doesn't want to learn something, then the best teacher in the world cannot teach them...and if someone *wants* to learn something, no one can stop them.
@@bunnypeople If you got scammed then it is time for looking into the mirror and what you then can see is the guy who was so foolish to let himself be scammed, right. There is a scammer and the stupidity of the victim that did trust obviously the false but whose fault is it if you are not carefull enough? He had warned pretty early about all the scam that was going on and now you want to throw a bottle of oil into the fire ? This is quite the opposite of what friends want when they are in need for a fire extinguisher and the reply is another bottle of oil thrown into the burning fire. Time to change the attitude you are showing, right ?
I had a chemistry teacher in high school. I really liked him, and he encouraged me to go into science/engineering. I gave it a go, but wound up being a Chef. I think he would have approved. My thermodynamics background has helped immensely, and I'm not joking. So many talented cooks do not understand thermodynamics.
That is a very valuable skill. It involves chemistry, thermodynamics, biology, anatomy, psychology, aesthetics, fine motor control as well as economics. I've always been impressed by the operation of a successful restaurant.
14:33 At Hamilton Standard we used the compressor exit temperature, and absolute pressure, the airflow and fuel flow to compute the turbine inlet temperature, knowing the combustion enthalpy of the specific fuel. The turbine inlet temperature is a critical parameter, which affects the turbine life .Using the fuel controller the engine acceleration was actively limited to prevent over temperature. But also the deceleration of the engine was limited to prevent flame out. As you mentioned, there was no reliable way to measure this most critical parameter directly. Outstanding professional presentation.
That's interesting. I'd actually approach this differently now even on the highest performance engines. Direct measurement is best because it avoids potentially unexpected events that the models haven't anticipated. Laser/fiber pyrometry can measure these temperatures directly at a sufficient standoff distance. You can also obtain spectral information about the mixture and emissions.
@@dalecomer5951 , derived from the compressor maps, using rpm and compressor pressure ratio and compressor exit pressure, and temperature to get mass flow, not just volume flow. On early engines the acceleration and deceleration limits were schedules realized on measured rpm and temperature input activated mechanical cams, reflecting data obtained on test engines at P&W. Later FADEC's (full authority digital engine control) computed the T4 temperature more accurately, since active cooling on the turbine blades is used to optimise life and specific fuel consumption.
@@arturoeugster2377 Thanks, that's what I thought. My mom worked for Pacific Airmotive Corp. when they provided world wide service and support for Hamilton Standard props.
@@TechIngredients I agree, fast response direct sensors are better for control stability than the delay caused by digital computation lag. What is important is the combustion gas spacially averaged temperature prior to the turbine inlet guide vanes. The temperature is lower of the gas flowing over the radially stressed turbine blades. Due to the significant nearly adiabatic expansion as a result of the tangential flow velocity increase.
May I suggest you add a pitot tube to your turbine stage outflow to measure the actual energy you have available for making thrust/SHP , its an invaluable tool for tuning/optimising the engine, it needs to supply a 1Bar gauge , generally a DIY engine will produce ~0.5 Bar of P4t , though when maximised it can be closer to 0.8 Bar
Loving this deep dive series. Having you break everything down in minute detail gives me more confidence to build something similar once I retire (in about two months ;-) Thank you!
Really nice series. It reminds me of my undergraduate project, where me and my friends attempted to build a small gas turbine. We built a rudimentary combustion chamber, ignition system, and got the entire system to a self-sustaining stage after the initial blower-based start. We unfortunately could not measure accurate system data because of lack of equipment. Interesting times.
Amazing videos. Thank you After watching your solar water heating videos, I just want to say that with all the economic disruption around the world, many would benefit from solar thermal storage and heating. I hope that inspires a deep dive. We all need to participate in designing simple systems for such sustainability. Thanks again
The thing I'm looking forward to most on this series is how to get work out of the engine. Taming hot gases to drive a shaft for a generator or other mechanical work has me thinking all sorts of options.
Same here. I've been binge watching all their videos about the turbo jet over the last few days so so I can learn about how to hook up a generator to high efficiency jet engine to power projects. Looking forward to the next video!
This guy is great. He has the smarts of a professor but you know he is really a rebel looking to do something spectacular crazy. I could watch him all day.
Exceedingly patient and understanding neighbors. Every jet I have met needed many cycles of testing and neighborhoods are not designed to withstand high-decibel noise, say from testing jet engines.
Unfortunately the "facts??" provided aren't correct , consult the turbo manufacturers recommendations , which will indicate much greater flow rates and an unobstructed oil drain to ABOVE the oil level in the tank , this guys speaks all the fancy words but doesn't know the facts .
Just basing this on my rudimentary knowledge of turbine engines, but would it be useful to seal the oil reservoir and tap in the boost pressure to the tank? In theory, that would make the pressure equal on both sides of the oil seal, preventing oil escaping, and preventing air getting into the bearings and starving them of oil. Then you could simply lubricate/cool the bearings with a circulation pump.
LabVIEW, LabJack T-7, and some cheap transducers. Splurge on an Enfield Fluid Controls proportional solenoid valve here and there. Run the rig from your desk. You could, for example, control oil pressure to be 15 psi above chamber pressure at all operating conditions with a bit of programming. The commercial LabVIEW license will set you back a bit, but it's worth it for the kinds of things you do.
With the oil filter you can easily adapt it to use regular automotive spin on filters, as you just buy a hydraulic oil filter adaptor block, and then, depending on the thread and seal diameter it has, you put in a regular automotive filter spin on unit there to filter the oil. Cheap, and works well, plus the larger volume filter helps with extra heat dissipation, and also you might not get enough heat into the oil to need the extra oil cooler. Also strip the boost gauge, and resolder or replace the LED backlight LED's that are flickering. For water cooling you can also use motorbike radiators, or even PC cooling units, as the flow rates are not extreme, and they will work, along with the pumps. I used commercial refrigeration condenser units before for water cooling, bonus is they normally come with a fan mounted, though typically mains voltage, but 12V fans also are available that will work there, or just use 4 regular 12V 100mm fans in a frame to replace it. Pipes inside the condenser are grooved, for better heat transfer, which makes a big difference.
How about tapping off the boost pressure and feed it in the oil reservoir? That way the oil pressure would always follow the boost pressure therefore no leak.
Hi Professor. I know it is unrelated, but you made an interesting video called "Extreme Magnets" a while back.. I wonder if there is a follow up video? or if there is a video that you used the magnet in ..
My turbo is liquid cooled but there is no electric pump to keep the water flowing when the engine is shut off, I know some cars had an additional electric pump but they're quite rare and not a requirement for water cooled turbos
@@TechIngredients that might be an unnecessary precaution from Nissan, but since they went into the trouble to add this feature I won't remove it :) (or maybe since Garret made them watercooled they installed it with this feature). This might serve only as an idiot proof feature, the water still in the housing can help to absorb a bit of the excess heat and prevent a bit of oil cooking. If installed properly the thermal siphoning can also maintain a bit of circulation even without a pump (but I'm guessing here). The low oil capacity of these engine might have something to do in that decision too. Since my engines contain very little oil for turbocharged engines (around 3.5l for the 1800cc or 2000cc versions, some smaller naturally aspirated engines contain a lot more), everything that can lower the stress on the oil is good to take. They're already prone to rod bearing failure as it is ...
Hi, there is a lot of fluff going around about off-grid water from air ideas. I searched your videos (there are many!) and may have missed it. Did you make one? If not, would you? Thanks.
Hey, great video! I really wish you guys could put out more content every week but I know that takes time... You really are my favorite channel on all of UA-cam! I almost always check every week to see if you've uploaded anything new...👍 *Previously on your awesome microwave videos you said you were considering putting together a video related to stealth theory, coatings and radar absorbent materials (RAM).... Is this still something you're planning on doing? If so, I have some interesting (publicly available) info, declassified documents & ideas to test... Thanks again!
Does the turbocharger still have the oil restrictor in it? In that case, the oil pressure inside the bearings would be pretty low, compared to the measured oil pressure of the system.
So to ask: use a variable restrictor valve on the oil outflow based on boost? = Maintaining a balanced "bearing oil bath" to keep a slight/trickle positive oil outflow. Think I just engineered something 😸
I'm rather curious. How would someone make an engine for shaft power using turbochargers? From what I know, the turbines are connected to shafts directly, which then have geared reduction outputs. These turbochargers seem like something you don't want to mess with, so how do you get shaft power without machining your own turbine? The same goes for multi-stage engines. Are the turbos plumbed in series? I can't imagine such an engine being used for anything other than thrust output.
Staged turbos was originally used in airplanes to raise the fly ceiling of aircraft. A current application of a stave turbo system is dragracing diesels. The are using 2 to 3 turbos in series to get to 120psi manifold pressure. Caterpillar and Volvo both have used staged turbo system in heavy diesel engines. I think it was Siemens systems has an indirect turbine power system. You have the main jet engine. Then just outside the exhaust nozzle you have what looks like another jet engine. They are using the exhaust gasses as a coupling fluid between the exhaust of the jet engine and the generator.
FYI. Your boost pressure auge is flickering. Is that a camera artifact or some type of fault? This is a fascinating series and makes me want to try it myself! ;)
This was the video i was looking for, thanks. Do you know if the amazon $150 turbochargers are ok or good for jet engine application? ive heard they are hit or miss for normal turbo charger application but maybe its different for jet engines, turbos cost so much money for the good brands
Since your oil's temperature is so much lower than automotive oil temperatures; do you run a lighter weight automotive oil, or is the viscosity critical for you application?
@@TechIngredients Plenty of Scientific Papers on the subject of turbocharger bearings, which include the effects of lube viscosity changes with temperature that affect the rotor dynamics , the lubrication of the bearings is only part of the job , balls only require a few drops of oil for lube , but they need cooling which needs flow , but the greatest requirement of the lube is to keep the very complex rotor dynamics under control , very high rpm with a "skinny" shaft that has a very heavy overhung lump of Inco on the end is a nightmare to control , and is one of the reasons why ball bearing turbos are not the best solution for reliability , all of the large marine turbos use "brass" on their mega dollar turbos running boosts of up to 70 psi from their single stage centrif comps , ABB put out some very good info . Your current setup with the flooded bearing cavity will be interupting the oil jet lubrication of the bearings , balls must run "free" and the oiljet needs to be of sufficient strength/pressure to overcome the air blast surrounding the balls so as to penetrate and actually hit the balls , balls are OK for initial acceleration of the rotor during spoolup , but theres not a lot of performance gain at the top end between them and brass , its a complex subject and is the reason why its best to follow manufacturers recommendations with regards instalation and operation .
Out of curiosity what's the max RPM of these little turbochargers and at what point do you know not to push the scroll any faster? I was sitting here thinking I've never thought to ask what the max RPM of a turbo would be in normal duty cycle
@@TechIngredients Good to know, thanks! I *think* I've seen all of the videos in your jet engine series, will need to go back and see where I missed what you're using for a tac.. Assuming an optical system due to the small size of the rotating assembly (for simplicity as well!)? Decided it's time to build one of my own only because as I mentioned in a previous comment on one of your other jet vids that I have a very hard time articulating how gas generators/turboshafts/turbojets/turboprops/turbofans actually work, and for that I've been referring friends & family directly to the previous vid I left a comment on (you're explanations are far better than what I can manage!). Even though I've been around them more than 20 years now. By the way the electric fan for starting & shutdown cooling, that was a very elegant solution
Excellent video as always. Quick question, would the oil temp become an issue when you start to compound turbos or does it stay at a relatively moderate temp?
Ah...maybe ask why I ever bother with dual numbers. Metric is fine, but the US market is dominated by imperial. This includes our suppliers and tooling manufacturers. I provide metric conversions as a courtesy.
@@TechIngredients " the US market is dominated by imperial. This includes our suppliers and tooling manufacturers." and isn't that annoying a.f.? "I provide metric conversions as a courtesy?" That is kind of the wrong way around. I think it is ok to include imperial for those people of the USA who still did not make the jump. But if you do only Imperial, that comes across as just arrogant. That is a shame, cause otherwise you seam quite likeable. You see this is an International community. And here (in the world)we speak metric. Almost everyone else had to learn English to participate. And I can assure you, that is quite a lot more work than converting some numbers.
Conversely it would be arrogant if we only provided metric, but that is routinely done by other presenters. "Still did not make the jump" ...hmm You had to learn english to participate. You come across as a little bitter.
You remind me of my father a great deal .He was a chemical engineer who loved dust explosions. We made a cannon that ran on a teaspoon of flower and wow the energy of the flour. Amazing how much energy is released in dust explosions .
One suggestion for us, the metric people. You can easily add conversions to the metric system in video post-processing and stick them in video overlay. Then you can normally use freedom units while talking.
@@ugetridofit I'm already doing the effort and not complaining. That was just a suggestion based on what I've seen on some other channels (e.g. "Not what you think"). I've also seen the channels that do it both ways (e.g. Fermilab's YT channel) - when the host mentions something in metric, they also note the imperial version.
First establish that those pressures are not associated with a flow restrictor to limit flow to the turbo. The real pressure the turbo sees is downstream from any restrictor. Make sure THAT pressure is at least few psi higher than the highest boost pressure ever reached.
@@TechIngredients LOL, I'd like to see the calculations , 40 lbs is impossible at 900F for the TIT, at the P2 you are running , some of your gauge readings are out , the physics demand a higher TIT , or compressor and turbine stage efficiencies much higher than the ~75% of a similar Garrett turbo ,
Nice break down. I've never been very interested in this tech, but now it seems attractive to at least to play with. Don't worry about the units, for us who can do math it is irrelevant. If I had my preference though I'd like you to provide lengths in quartz-light-picoseconds. It would be worth it just for the comments.
Oil temp gauge: "It's overkill" -- Oh you clearly understand engineers(Not saying this sarcastically). I mean you bought one of those gauges. Give in to ours and your impulses... Buy another one, let's see that temperature!
@@TechIngredients first the concept, you take a wheel and place permanent magnets around the outside diameter attached to wheel evenly spaced all with the same poll facing out. We can call these magnets ODM "outside diameter magnets". Then place magnets around the perimeter of the wheel evenly spaced and a distance determined by magnet strength. We will call them OPM (outside perimeter magnets). The OPMs are encased in a mu-metal "shield" to decrease the magnetic fields reach with an opening facing the wheel and a sliding door that covers that opening. Now you use timing gears on the wheel and on the OPM to time the doors opening dependant on the wheels motion, when the ODMs are in line with the OPMs to be pushed the OPMs door opens causing the wheel to be pushed "forward". The ODMs "strength" needs to be greater than the OPMs strength to overcome any resistance encountered when the shield door slides open and closed. Edit: the spacing between the ODM and OPM need to be such that the ODM magnetic fields do not interact with the shielding of OPM. This is the simplest and shortest way for me to explain this idea, i hope to get some feedback from you regardless if you want to cover this in a video.. Thank you for your time.
@@TechIngredients If you read my concept description and find it to be nonsense, I would even like to hear a rebuttal or criticism. I realise that "perpetual motion" is cconsidered a sort of unicorn in science but I'm confident my design addresses most issues and isnt energy from nothing. I use the repulsive force of two like poles to propel a wheel. The energy is coming from the magnetic field.
The problem with your design is the shield. It doesn't block the magnetic fields inside and outside, it guides them. The force these magnets will exert against the shield is substantial and moving the shield will require at least as much energy as the "rotor" could generate.
@@TechIngredientsif I cant satisfy your criticism of my design, we can just say I assumed it was a can opener and I will delete my comments. The "shields" whole point is to redirect the magnetic field, to shorten the distance it would normally reach. The magnet in the shield would be a weaker magnet than the one on the wheel, this is to provide more "push" than the drag on the door. The magnets on the perimeter are stationary and only the "shield" door moves and only far enough to allow the magnetic field to extend far enough to "push" the ODMs field on the wheel.. Consider this, two magnets with like poles facing each other one is an N64 the other is a N35. N64 for wheel N35 for perimeter with the magnets being stronger on the wheel than the ones on perimeter, you will get a push stronger than the resistance of the door moving. The "push" will be equal to the N64 strength while the door drag will be equal to the N35 strength. On my design the OPMs would be far enough away so to prevent the ODMsField from interacting with OPMs shielding and so the magnetic fields of the two only interact when the OPM door is open. Edit: you can consider the "shield" door as almost a shutter on a camera, it only opens so far and for so long, dependant on how you time it. With each magnet timed properly, there will be a constant push exerted on the wheel. The numbers I use are arbitrary, only for conceptual explanations.. Thank you so much for taking your time to respond to me! I deeply appreciate your input and am just excited to talk to you! This is my last edit and I won't continue to bug you if you don't respond to this long and drawn out ramble I have going here! Thank you again!
Why add the complexity of the water cooling when you have the oil cooling? It's not in a car, so when you shut down your system you can leave the oil cooling running to let it cool down.
As I explained in the video, that could be done and when using the turbocharger in a jet engine we do that. But, many automobiles already have a system in place that continues the water cooling operation after the engine is shut down and piggybacking the turbo onto this system is easy.
Did anyone else snort when he said "Directly trying to measure the speed by trying to put something onto the shaft when this thing is spinning at 150,000RPM is almost impossible." I love Tech Ingredients! It made me think of how funny it would be to try to use a piece of tape! ^_^ I mean... technically... you could maybe use a laser reflection/photo sensor and... you somehow colored one of the blades... without throwing off the balance... it would be hard to do and fragile.. The hal effect is used in normal motors though. it's a better plan by 1000x
Yes and no. The amount of heat it will absorb is relatively small, but pre heating the fuel will help with combustion. However, because the heat is not actually removed from the cycle, but fed back into the combustion chamber, no net cooling will result.
I don't know that this would work but it might be a fun little experiment if you're interested I seen years ago where Tesla had invented a pump that was very very similar to the Tesla turbine it was bladeless it used rotating disc just like the Tesla turbine it worked under the same principles only thing is it was of course being driven or powered by an outside sourc well couldn't you use a pump like that let it pump or compress your air I mean Tesla turbine moves air so it should move air it's the same thing put so use that and put burn can in there and then put the exhaust through a Tesla turbine and have the whole thing on one common shaft where basically you made a bladeless turbojet engine would it work it might be something interesting to kick around just don't kick too hard cuz if it's running it might come apart
Obviously they're complex. Fuel and lubrication has to be distributed to multiple locations and the actual geometry of the compressor and turbine has to be changed to match flight loads.
Instead of the water cooling, couldn't you cool the engine with the fuel? I.e. from the fuel reservoir and the fuel pump, run it through the water cooling ports of the turbocharger. And then the hot fuel is distributed by the manifold: You can inject the pre-heated fuel into the engine (the lower viscosity will help the nozzles disperse it, and the higher temperature will help the hot combustion chamber to evaporate it). And whatever pre-heated fuel you don't use you can run through the radiator before returning it into the fuel tank. The only time when you would NOT want to do that is when the turbocharger exceeds the evaporation temperature of the fuel. (Because then you'd get a mixture of liquid and gas coming through your fuel lines.)
Your theory is good. Safety might require some additional steps because you have a volatile liquid very close to the high temperature of the turbine housing. All metal, high temperature flow lines and an automatic fuel purge system to prevent trapped fuel from vaporizing and igniting due to contact with the very high temperature metal would be a minimum.
Hello gents! I was wondering if building a jet engine involves filling orders made on your website for your thermal paste? I've sent emails, and I've gotten nothing in response. Others have purchased and not received any product or information either? Just an update or some form of customer service rather than, you paid us and *silence* type of scam level treatment. Thanks!
@@antonyharding5360 no it's from their site and guaranteed to be their site. Besides I have reached out several times over the course of the several months since and not gotten a single response. Others have gotten the same treatment, we all just want to know what's going on. They say they read every reply, so I was hoping this would force them out of their silence. 😟
I know this is a jet engine video, but if you ever do another test with the 5.1 surround sound foam and ceiling panel chamber, could you have some gamers listen to surround sound in a video game situation?
Whoa, take easy there pal. Those exact words are said daily about every person on UA-cam somewhere in the comments. Talk about an overused phrase, this is the one.
The way this guy speaks never gets old. He could talk about anything and it would sound interesting.
“Hello. This is part 19 of our reading of the 1974 New York City phone book. In part one…”
I’m with you! If I hear him say these words, he gets as much playtime from me as he records. Haha
@@BobbyJHeupel 🤣🤣🤣
I wish I had a teacher like you when I was at school many years ago, to explain things and keep it interesting.. Regards Antony Warrington England..
if someone doesn't want to learn something, then the best teacher in the world cannot teach them...and if someone *wants* to learn something, no one can stop them.
Good teachers like good coaches remove obstacles and leverage success.
@@TechIngredients good teachers also scam people, huh?
@@bunnypeople man just stop
@@bunnypeople If you got scammed then it is time for looking into the mirror and what you then can see is the guy who was so foolish to let himself be scammed, right.
There is a scammer and the stupidity of the victim that did trust obviously the false but whose fault is it if you are not carefull enough?
He had warned pretty early about all the scam that was going on and now you want to throw a bottle of oil into the fire ?
This is quite the opposite of what friends want when they are in need for a fire extinguisher and the reply is another bottle of oil thrown into the burning fire.
Time to change the attitude you are showing, right ?
I had a chemistry teacher in high school. I really liked him, and he encouraged me to go into science/engineering. I gave it a go, but wound up being a Chef. I think he would have approved. My thermodynamics background has helped immensely, and I'm not joking. So many talented cooks do not understand thermodynamics.
That is a very valuable skill. It involves chemistry, thermodynamics, biology, anatomy, psychology, aesthetics, fine motor control as well as economics.
I've always been impressed by the operation of a successful restaurant.
14:33
At Hamilton Standard we used the compressor exit temperature, and absolute pressure, the airflow and fuel flow to compute the turbine inlet temperature, knowing the combustion enthalpy of the specific fuel.
The turbine inlet temperature is a critical parameter, which affects the turbine life .Using the fuel controller the engine acceleration was actively limited to prevent over temperature. But also the deceleration of the engine was limited to prevent flame out. As you mentioned, there was no reliable way to measure this most critical parameter directly.
Outstanding professional presentation.
That's interesting.
I'd actually approach this differently now even on the highest performance engines.
Direct measurement is best because it avoids potentially unexpected events that the models haven't anticipated.
Laser/fiber pyrometry can measure these temperatures directly at a sufficient standoff distance. You can also obtain spectral information about the mixture and emissions.
Which engines? Was the airflow measured or derived?
@@dalecomer5951 ,
derived from the compressor maps, using rpm and compressor pressure ratio and compressor exit pressure, and temperature to get mass flow, not just volume flow. On early engines the acceleration and deceleration limits were schedules realized on measured rpm and temperature input activated mechanical cams, reflecting data obtained on test engines at P&W.
Later FADEC's (full authority digital engine control) computed the T4 temperature more accurately, since active cooling on the turbine blades is used to optimise life and specific fuel consumption.
@@arturoeugster2377 Thanks, that's what I thought. My mom worked for Pacific Airmotive Corp. when they provided world wide service and support for Hamilton Standard props.
@@TechIngredients
I agree, fast response direct sensors are better for control stability than the delay caused by digital computation lag.
What is important is the combustion gas spacially averaged temperature prior to the turbine inlet guide vanes. The temperature is lower of the gas flowing over the radially stressed turbine blades.
Due to the significant nearly adiabatic expansion as a result of the tangential flow velocity increase.
May I suggest you add a pitot tube to your turbine stage outflow to measure the actual energy you have available for making thrust/SHP , its an invaluable tool for tuning/optimising the engine, it needs to supply a 1Bar gauge , generally a DIY engine will produce ~0.5 Bar of P4t , though when maximised it can be closer to 0.8 Bar
Can't wait for the compound set up!
I learn so much from you. Thank you for the great videos and useful information.
I love your videos, my little girl watches you on UA-cam all the time and she loves your idea's. She thinks you are one of the smartest people ever.
She must be a great judge of character!😁
But seriously, that's great. Tell her thanks.
Oh I can't wait to see your compound design
Loving this deep dive series. Having you break everything down in minute detail gives me more confidence to build something similar once I retire (in about two months ;-)
Thank you!
Really nice series. It reminds me of my undergraduate project, where me and my friends attempted to build a small gas turbine. We built a rudimentary combustion chamber, ignition system, and got the entire system to a self-sustaining stage after the initial blower-based start. We unfortunately could not measure accurate system data because of lack of equipment. Interesting times.
Still my favorite channel hands down
I really like the content of all of your presentations and thanks also for the transcript.
Amazing videos. Thank you
After watching your solar water heating videos, I just want to say that with all the economic disruption around the world, many would benefit from solar thermal storage and heating. I hope that inspires a deep dive. We all need to participate in designing simple systems for such sustainability. Thanks again
Nice! I was waiting for Part 3. Thanks TI
Preciated balsa wood 🪵
Fun stuff. Looking forward to the next one.
The thing I'm looking forward to most on this series is how to get work out of the engine.
Taming hot gases to drive a shaft for a generator or other mechanical work has me thinking all sorts of options.
Same here. I've been binge watching all their videos about the turbo jet over the last few days so so I can learn about how to hook up a generator to high efficiency jet engine to power projects. Looking forward to the next video!
You really know how to teach and explain and get in detail and you remind me of myself
This guy is great. He has the smarts of a professor but you know he is really a rebel looking to do something spectacular crazy. I could watch him all day.
Thanks!
Exceedingly patient and understanding neighbors. Every jet I have met needed many cycles of testing and neighborhoods are not designed to withstand high-decibel noise, say from testing jet engines.
The GOAT🤘🏽🤘🏽 Thank you for this drop of engine videos
Good! You are discussing proper lubrication of the turbo.
Unfortunately the "facts??" provided aren't correct , consult the turbo manufacturers recommendations , which will indicate much greater flow rates and an unobstructed oil drain to ABOVE the oil level in the tank , this guys speaks all the fancy words but doesn't know the facts .
@@racketmotorman Yes. Always consult the manufacturer's documentation.
Just basing this on my rudimentary knowledge of turbine engines, but would it be useful to seal the oil reservoir and tap in the boost pressure to the tank? In theory, that would make the pressure equal on both sides of the oil seal, preventing oil escaping, and preventing air getting into the bearings and starving them of oil. Then you could simply lubricate/cool the bearings with a circulation pump.
That should work.
That was popcorn worthy!!!
Thank you.
Hey, was hoping you could make videos testing & building a faraday box / EMP protection for small electronics
LabVIEW, LabJack T-7, and some cheap transducers. Splurge on an Enfield Fluid Controls proportional solenoid valve here and there. Run the rig from your desk. You could, for example, control oil pressure to be 15 psi above chamber pressure at all operating conditions with a bit of programming. The commercial LabVIEW license will set you back a bit, but it's worth it for the kinds of things you do.
massive thanks for ur stuff
it is insane
i love turbo engines
TI dropped another video? What a good night this is turning out to be.
Again and as always I take away lots of useful information from your video. Thanks for sharing. Weekend Stuff
With the oil filter you can easily adapt it to use regular automotive spin on filters, as you just buy a hydraulic oil filter adaptor block, and then, depending on the thread and seal diameter it has, you put in a regular automotive filter spin on unit there to filter the oil. Cheap, and works well, plus the larger volume filter helps with extra heat dissipation, and also you might not get enough heat into the oil to need the extra oil cooler.
Also strip the boost gauge, and resolder or replace the LED backlight LED's that are flickering. For water cooling you can also use motorbike radiators, or even PC cooling units, as the flow rates are not extreme, and they will work, along with the pumps. I used commercial refrigeration condenser units before for water cooling, bonus is they normally come with a fan mounted, though typically mains voltage, but 12V fans also are available that will work there, or just use 4 regular 12V 100mm fans in a frame to replace it. Pipes inside the condenser are grooved, for better heat transfer, which makes a big difference.
How about tapping off the boost pressure and feed it in the oil reservoir? That way the oil pressure would always follow the boost pressure therefore no leak.
That should work.
Small radiators are readily available for fairly cheap if you just search for "transmission cooler".
Thanks.
Hi Professor. I know it is unrelated, but you made an interesting video called "Extreme Magnets" a while back.. I wonder if there is a follow up video? or if there is a video that you used the magnet in ..
What is used on the piping from the compressor to combustion chamber… particularly the black coupling looking pieces that are clamped? Thanks
Dream shop! Great work 😀
Thank you for the videos
Always fascinating...cheers.
My turbo is liquid cooled but there is no electric pump to keep the water flowing when the engine is shut off, I know some cars had an additional electric pump but they're quite rare and not a requirement for water cooled turbos
Then you probably don't need the extra water cooling feature.
@@TechIngredients that might be an unnecessary precaution from Nissan, but since they went into the trouble to add this feature I won't remove it :) (or maybe since Garret made them watercooled they installed it with this feature).
This might serve only as an idiot proof feature, the water still in the housing can help to absorb a bit of the excess heat and prevent a bit of oil cooking. If installed properly the thermal siphoning can also maintain a bit of circulation even without a pump (but I'm guessing here).
The low oil capacity of these engine might have something to do in that decision too.
Since my engines contain very little oil for turbocharged engines (around 3.5l for the 1800cc or 2000cc versions, some smaller naturally aspirated engines contain a lot more), everything that can lower the stress on the oil is good to take.
They're already prone to rod bearing failure as it is ...
cant wait to see this mounted on the catamaran
Hi, there is a lot of fluff going around about off-grid water from air ideas. I searched your videos (there are many!) and may have missed it. Did you make one? If not, would you? Thanks.
Hey, great video!
I really wish you guys could put out more content every week but I know that takes time... You really are my favorite channel on all of UA-cam! I almost always check every week to see if you've uploaded anything new...👍
*Previously on your awesome microwave videos you said you were considering putting together a video related to stealth theory, coatings and radar absorbent materials (RAM)....
Is this still something you're planning on doing?
If so, I have some interesting (publicly available) info, declassified documents & ideas to test...
Thanks again!
Thanks!
Can you provide some links?
Ok will do👍 Is a Google Drive Link w/ sources, Video clips & ideas ok? Should I email to tech ingredients?
Does anyone remember watching Mr. Wizard in 1965? It's more enjoyable to watch this current version in color.
Compound turbo setup two precision turbskis would be amazing to see.
Huh I got the notification for this video but it doesn’t show up on your channel
Thank you🌄
Does the turbocharger still have the oil restrictor in it? In that case, the oil pressure inside the bearings would be pretty low, compared to the measured oil pressure of the system.
It doesn't.
lookin forward for the 2 stage turbojet
Nice new shop🔥
would be cool to add a "generator" stage to it, so you can start it from a battery and then re-charge that battery.
That will be done in the future.
So to ask: use a variable restrictor valve on the oil outflow based on boost?
= Maintaining a balanced "bearing oil bath" to keep a slight/trickle positive oil outflow.
Think I just engineered something 😸
I'm rather curious. How would someone make an engine for shaft power using turbochargers? From what I know, the turbines are connected to shafts directly, which then have geared reduction outputs. These turbochargers seem like something you don't want to mess with, so how do you get shaft power without machining your own turbine? The same goes for multi-stage engines. Are the turbos plumbed in series? I can't imagine such an engine being used for anything other than thrust output.
Staged turbos was originally used in airplanes to raise the fly ceiling of aircraft.
A current application of a stave turbo system is dragracing diesels. The are using 2 to 3 turbos in series to get to 120psi manifold pressure. Caterpillar and Volvo both have used staged turbo system in heavy diesel engines.
I think it was Siemens systems has an indirect turbine power system. You have the main jet engine. Then just outside the exhaust nozzle you have what looks like another jet engine. They are using the exhaust gasses as a coupling fluid between the exhaust of the jet engine and the generator.
en.wikipedia.org/wiki/Turboshaft
Why is the motorcycle radiator used for the oil line? And utilizing one necessary? Cheers
It might not be, especially for short or intermittent runs. Even with it, the oil does get pretty warm, I'm not sure if eliminating it is a good idea.
Hi! Out of curiosity, what power supply model do you utilize? Thanks
Hi from Melbourne Australia mate 👍.
FYI. Your boost pressure auge is flickering. Is that a camera artifact or some type of fault? This is a fascinating series and makes me want to try it myself! ;)
Probably a camera artifact.
This was the video i was looking for, thanks. Do you know if the amazon $150 turbochargers are ok or good for jet engine application? ive heard they are hit or miss for normal turbo charger application but maybe its different for jet engines, turbos cost so much money for the good brands
Thanks.
I don't know about the reliability of those turbos.
Great work. Now I get it!....
If you weld on that remember to heat treat.
Since your oil's temperature is so much lower than automotive oil temperatures; do you run a lighter weight automotive oil, or is the viscosity critical for you application?
I don't, but I suspect you could.
@@TechIngredients Plenty of Scientific Papers on the subject of turbocharger bearings, which include the effects of lube viscosity changes with temperature that affect the rotor dynamics , the lubrication of the bearings is only part of the job , balls only require a few drops of oil for lube , but they need cooling which needs flow , but the greatest requirement of the lube is to keep the very complex rotor dynamics under control , very high rpm with a "skinny" shaft that has a very heavy overhung lump of Inco on the end is a nightmare to control , and is one of the reasons why ball bearing turbos are not the best solution for reliability , all of the large marine turbos use "brass" on their mega dollar turbos running boosts of up to 70 psi from their single stage centrif comps , ABB put out some very good info . Your current setup with the flooded bearing cavity will be interupting the oil jet lubrication of the bearings , balls must run "free" and the oiljet needs to be of sufficient strength/pressure to overcome the air blast surrounding the balls so as to penetrate and actually hit the balls , balls are OK for initial acceleration of the rotor during spoolup , but theres not a lot of performance gain at the top end between them and brass , its a complex subject and is the reason why its best to follow manufacturers recommendations with regards instalation and operation .
I'm surprised the hall sensor has the bandwidth for this.
Out of curiosity what's the max RPM of these little turbochargers and at what point do you know not to push the scroll any faster? I was sitting here thinking I've never thought to ask what the max RPM of a turbo would be in normal duty cycle
That depends on the size, but can run to over 150,000 RPM in the smallest. Pick a model, go to Google images and look for flow maps.
@@TechIngredients Good to know, thanks! I *think* I've seen all of the videos in your jet engine series, will need to go back and see where I missed what you're using for a tac.. Assuming an optical system due to the small size of the rotating assembly (for simplicity as well!)? Decided it's time to build one of my own only because as I mentioned in a previous comment on one of your other jet vids that I have a very hard time articulating how gas generators/turboshafts/turbojets/turboprops/turbofans actually work, and for that I've been referring friends & family directly to the previous vid I left a comment on (you're explanations are far better than what I can manage!). Even though I've been around them more than 20 years now. By the way the electric fan for starting & shutdown cooling, that was a very elegant solution
Excellent video as always. Quick question, would the oil temp become an issue when you start to compound turbos or does it stay at a relatively moderate temp?
That's a good point.
The heat generated by several times the fuel consumption will probably need to be monitored.
Very nice, keep it up!
Better use of the hot water, couple it to a propane tank, do longer runs.
Did you watch the last video?
Back in the spring I changed the oil and battery in my lawn mower.
I did that too, but I couldn't figure out how to put it back together.
Since you don't need the oil temp gauge, would some kind of flow meter be a better choice?
I think so. They're much less common.
How are the time travel experiments coming along?
Totally unrelated to this video, but I just remembered Starlite, the "wonder material". May be you'll try your own version of this?
Probably not. It seems like a low cost form of an aerogell. Once the organic components carburize it becomes a carbon based aerogel.
@@TechIngredients Makes sense. And thanks for answering!
Hi, why dont put an tesla turbine in serie to make axial power?
We will
If you don't like giving dual numbers, y do you bother with imperial?
Ah...maybe ask why I ever bother with dual numbers. Metric is fine, but the US market is dominated by imperial. This includes our suppliers and tooling manufacturers. I provide metric conversions as a courtesy.
@@TechIngredients " the US market is dominated by imperial. This includes our suppliers and tooling manufacturers." and isn't that annoying a.f.?
"I provide metric conversions as a courtesy?" That is kind of the wrong way around. I think it is ok to include imperial for those people of the USA who still did not make the jump. But if you do only Imperial, that comes across as just arrogant. That is a shame, cause otherwise you seam quite likeable. You see this is an International community. And here (in the world)we speak metric. Almost everyone else had to learn English to participate. And I can assure you, that is quite a lot more work than converting some numbers.
Conversely it would be arrogant if we only provided metric, but that is routinely done by other presenters.
"Still did not make the jump" ...hmm
You had to learn english to participate.
You come across as a little bitter.
Are you able to use this as sort of an APU to start another jet engine?
It has the potential, but it would need to be reconfigured.
You remind me of my father a great deal .He was a chemical engineer who loved dust explosions. We made a cannon that ran on a teaspoon of flower and wow the energy of the flour. Amazing how much energy is released in dust explosions .
One suggestion for us, the metric people. You can easily add conversions to the metric system in video post-processing and stick them in video overlay. Then you can normally use freedom units while talking.
Sure.
It's interesting that videos that use metric units don't do this for imperial conversions.
Doesn't he do enough work making the videos? A little effort on your part for you to do the conversions would be better.
@@ugetridofit I'm already doing the effort and not complaining. That was just a suggestion based on what I've seen on some other channels (e.g. "Not what you think"). I've also seen the channels that do it both ways (e.g. Fermilab's YT channel) - when the host mentions something in metric, they also note the imperial version.
What oil pressure should be used? I have seen between 1 bar and 40psi claimed to be correct
First establish that those pressures are not associated with a flow restrictor to limit flow to the turbo. The real pressure the turbo sees is downstream from any restrictor. Make sure THAT pressure is at least few psi higher than the highest boost pressure ever reached.
@@TechIngredients Thankyou for your answer!
Bravo......can u make pulse jet.....?........cheers
We'll be covering that as well.
Excellent
Thanks!
Do you have any final thrust measurements for this setup?
40 lb with the nozzle I demonstrated in the video.
@@TechIngredients LOL, I'd like to see the calculations , 40 lbs is impossible at 900F for the TIT, at the P2 you are running , some of your gauge readings are out , the physics demand a higher TIT , or compressor and turbine stage efficiencies much higher than the ~75% of a similar Garrett turbo ,
Nice break down. I've never been very interested in this tech, but now it seems attractive to at least to play with.
Don't worry about the units, for us who can do math it is irrelevant. If I had my preference though I'd like you to provide lengths in quartz-light-picoseconds. It would be worth it just for the comments.
And fuel consumption in inverse acres.
Oil temp gauge: "It's overkill" -- Oh you clearly understand engineers(Not saying this sarcastically). I mean you bought one of those gauges. Give in to ours and your impulses... Buy another one, let's see that temperature!
I have a build idea...
It would be cheap due to you already have most the supplies. Do you take suggeations?
Sure, what is it?
@@TechIngredients first the concept, you take a wheel and place permanent magnets around the outside diameter attached to wheel evenly spaced all with the same poll facing out. We can call these magnets ODM "outside diameter magnets".
Then place magnets around the perimeter of the wheel evenly spaced and a distance determined by magnet strength. We will call them OPM (outside perimeter magnets).
The OPMs are encased in a mu-metal "shield" to decrease the magnetic fields reach with an opening facing the wheel and a sliding door that covers that opening.
Now you use timing gears on the wheel and on the OPM to time the doors opening dependant on the wheels motion, when the ODMs are in line with the OPMs to be pushed the OPMs door opens causing the wheel to be pushed "forward".
The ODMs "strength" needs to be greater than the OPMs strength to overcome any resistance encountered when the shield door slides open and closed.
Edit: the spacing between the ODM and OPM need to be such that the ODM magnetic fields do not interact with the shielding of OPM.
This is the simplest and shortest way for me to explain this idea, i hope to get some feedback from you regardless if you want to cover this in a video.. Thank you for your time.
@@TechIngredients If you read my concept description and find it to be nonsense, I would even like to hear a rebuttal or criticism. I realise that "perpetual motion" is cconsidered a sort of unicorn in science but I'm confident my design addresses most issues and isnt energy from nothing. I use the repulsive force of two like poles to propel a wheel. The energy is coming from the magnetic field.
The problem with your design is the shield. It doesn't block the magnetic fields inside and outside, it guides them. The force these magnets will exert against the shield is substantial and moving the shield will require at least as much energy as the "rotor" could generate.
@@TechIngredientsif I cant satisfy your criticism of my design, we can just say I assumed it was a can opener and I will delete my comments.
The "shields" whole point is to redirect the magnetic field, to shorten the distance it would normally reach. The magnet in the shield would be a weaker magnet than the one on the wheel, this is to provide more "push" than the drag on the door.
The magnets on the perimeter are stationary and only the "shield" door moves and only far enough to allow the magnetic field to extend far enough to "push" the ODMs field on the wheel..
Consider this, two magnets with like poles facing each other one is an N64 the other is a N35. N64 for wheel N35 for perimeter with the magnets being stronger on the wheel than the ones on perimeter, you will get a push stronger than the resistance of the door moving. The "push" will be equal to the N64 strength while the door drag will be equal to the N35 strength. On my design the OPMs would be far enough away so to prevent the ODMsField from interacting with OPMs shielding and so the magnetic fields of the two only interact when the OPM door is open.
Edit: you can consider the "shield" door as almost a shutter on a camera, it only opens so far and for so long, dependant on how you time it.
With each magnet timed properly, there will be a constant push exerted on the wheel. The numbers I use are arbitrary, only for conceptual explanations..
Thank you so much for taking your time to respond to me! I deeply appreciate your input and am just excited to talk to you! This is my last edit and I won't continue to bug you if you don't respond to this long and drawn out ramble I have going here! Thank you again!
Why add the complexity of the water cooling when you have the oil cooling? It's not in a car, so when you shut down your system you can leave the oil cooling running to let it cool down.
As I explained in the video, that could be done and when using the turbocharger in a jet engine we do that. But, many automobiles already have a system in place that continues the water cooling operation after the engine is shut down and piggybacking the turbo onto this system is easy.
What happened to the rightmost gauge on the panel?
Nothing.
The flicker is due to a camera artifact, we can't see it.
40psi oil pressure is ideal for BB turbo's! Well, most turbos, even some Journal bearing Turbo's!
Did anyone else snort when he said "Directly trying to measure the speed by trying to put something onto the shaft when this thing is spinning at 150,000RPM is almost impossible." I love Tech Ingredients! It made me think of how funny it would be to try to use a piece of tape! ^_^ I mean... technically... you could maybe use a laser reflection/photo sensor and... you somehow colored one of the blades... without throwing off the balance... it would be hard to do and fragile.. The hal effect is used in normal motors though. it's a better plan by 1000x
How many parts about jetengines are yet to come cuz im not interested in any
A total of four.
@@TechIngredients Aw, is that all?
hi, can you use the fuel itself for cool the turbojet ?
Yes and no.
The amount of heat it will absorb is relatively small, but pre heating the fuel will help with combustion.
However, because the heat is not actually removed from the cycle, but fed back into the combustion chamber, no net cooling will result.
@@TechIngredients oh ok, this is a good point, thank you for have reply
I don't know that this would work but it might be a fun little experiment if you're interested I seen years ago where Tesla had invented a pump that was very very similar to the Tesla turbine it was bladeless it used rotating disc just like the Tesla turbine it worked under the same principles only thing is it was of course being driven or powered by an outside sourc well couldn't you use a pump like that let it pump or compress your air I mean Tesla turbine moves air so it should move air it's the same thing put so use that and put burn can in there and then put the exhaust through a Tesla turbine and have the whole thing on one common shaft where basically you made a bladeless turbojet engine would it work it might be something interesting to kick around just don't kick too hard cuz if it's running it might come apart
pretty cool
Why airplane jet engine has so many cables and piping? What are they?
Obviously they're complex. Fuel and lubrication has to be distributed to multiple locations and the actual geometry of the compressor and turbine has to be changed to match flight loads.
Instead of the water cooling, couldn't you cool the engine with the fuel? I.e. from the fuel reservoir and the fuel pump, run it through the water cooling ports of the turbocharger. And then the hot fuel is distributed by the manifold: You can inject the pre-heated fuel into the engine (the lower viscosity will help the nozzles disperse it, and the higher temperature will help the hot combustion chamber to evaporate it). And whatever pre-heated fuel you don't use you can run through the radiator before returning it into the fuel tank.
The only time when you would NOT want to do that is when the turbocharger exceeds the evaporation temperature of the fuel. (Because then you'd get a mixture of liquid and gas coming through your fuel lines.)
Your theory is good.
Safety might require some additional steps because you have a volatile liquid very close to the high temperature of the turbine housing. All metal, high temperature flow lines and an automatic fuel purge system to prevent trapped fuel from vaporizing and igniting due to contact with the very high temperature metal would be a minimum.
It sounds like u have a different job outside the rulm of youtube., What do u work?
He teaches high school chemistry in the Albuquerque Unified School District.
Can I help with some of your projects been watching for years
Thought you was going to lay off the HGH those hands are looking mighty big
It’s ok to use Fahrenheit
Hello gents!
I was wondering if building a jet engine involves filling orders made on your website for your thermal paste? I've sent emails, and I've gotten nothing in response. Others have purchased and not received any product or information either? Just an update or some form of customer service rather than, you paid us and *silence* type of scam level treatment. Thanks!
Hi there, the paste scam is someone Conning people, not this chap,, don't buy, unless your sure its a genuine site..
@@antonyharding5360 no it's from their site and guaranteed to be their site. Besides I have reached out several times over the course of the several months since and not gotten a single response. Others have gotten the same treatment, we all just want to know what's going on.
They say they read every reply, so I was hoping this would force them out of their silence. 😟
Where do you get the money to buy all these expensive gear?
Does UA-cam pay that well?
It does.
@@TechIngredients I'm in.
I know this is a jet engine video, but if you ever do another test with the 5.1 surround sound foam and ceiling panel chamber, could you have some gamers listen to surround sound in a video game situation?
Good idea.
how soon for a jet powered catamaran hydrofoil
You are a national treasure 🪙
Whoa, take easy there pal. Those exact words are said daily about every person on UA-cam somewhere in the comments. Talk about an overused phrase, this is the one.
@@stevewalston7089 doubling down 🎆🎆🎆
I hope to see the final application on a go kart lol