DIY Variable Nozzle Electric Ducted Fan | Thrust testing | 2500 Kv motor
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- Опубліковано 9 вер 2023
- Hello guys, I have designed and 3D Printed a variable nozzle EDF in this video. I have used my previous 70 mm Electric Ducted Fan in this video.
I have used a Racerstar 2500 Kv brushless motor in it.
Download the files using the link below :
themechninja.com/product/vari...
70 mm EDF Video :
• How I made a 3D Printe...
Check out our website for more products and information :
themechninja.com/
Best buy link of the parts:-
1) Racerstar 2500KV Motor :- IND - -----------------------------------------
USA - amzn.to/3k3Q5IQ
2) M3 Allen nuts and bolts :- IND - amzn.to/3sA0sb7
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3) Watt meter:- IND - amzn.to/3swB6em
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4) 40 Amp Esc :- IND - ------------------------------------------
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5) Servo Tester :- IND - amzn.to/3B0YAuT
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6) 11.1 Volt battery:- IND - amzn.to/3tvaaLB
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Thank you and have a nice day :-) - Наука та технологія
It’s amazing what the home hobbyist can create these days. Impressive!!
Thankyou so much for your comment....😊😊
This just a glimpse of my knowledge....☺️☺️
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I've subscribed and you are now the most impressive indian tech guy on UA-cam.
Thankyou so much...😊😊
This is cool. I do think this makes more sense for an EDF, fixed wing type aircraft. For a quad, using a quarter deflector, each corner on the inside towards the center. Variable pitch blades on the other hand, now that might be the final direction. The main difference between helicopter type and quad type, being that the quad would only need a "fixed" variance, meaning the pitch of the entire propeller, much like fixed wing types.
Thankyou so much for your comment. This is my first prototype..I thought to check the effect of variable diameter on an EDF....the updated version video will be uploaded within a week.
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The paddles you added reminded me of the thrust attinuators that were on the T37 I flew at UPT. They were on the T37 to reduce the thrust not increase it. They were required to allow higher power settings on landing due to the slow acceleration of the engine on the T37.
Bro is going to make own Airline Company 🌚🌚
😅😅😅
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Your work is amazing Brother. Keep working and creating. The new world awaits.
Thankyou so much for watching it.... don't forget to subscribe for more....many videos are on the way...😊
Pretty cool! Looks like the nozzle fins need guides on them to help aid the formation of the converging outlet, that or have the fins slightly overlap each other so they don't bump into each other during closure. Subbed! 👍 Looking forward to the next one.
Thankyou so much for your suggestion. I have already done that in the updated version. You can watch the video and tell me your views on it.
And thankyou for watching and don't forget to subscribe...:-)
0:56
Have you tried variable duct diameter and nozzle diameter combined?
So having two fans and a variable duct in-between the fans and the nozzle.
Keep it up man keep it up. Nice to see your face and confidence. Can't wait to get my 3d printer.
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Thank you my friend are very helpful.
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I suggest adding a slight blank tubing section, short length, between the edf exhaust exit and the thrust vectoring mechanism. With maybe an angled spiral vane inside. Help clean up turbulence.
Thankyou so much for your suggestion.... actually in my updated design I have modified the blades to cover the extra gap.
The video will be out within a week.
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Left a comment before but since it had a link it may have been blocked? I dunno. Anyway, the variation is on the wrong side. At the end of the day, what you have here is a ducted fan. It needs a more open intake to generate more vectored thrust. Extra points for making the duct aerodynamic when open to draw in more air and generate extra lift. When it closes it must also close to no more than the duct width or it'll constrain intake too much. Ultimately, the closed position is just to cruise and eliminate drag.
The reason further constraining the thrust vector damages the performance is because you're creating resistance to flow. The duct must be straight and there is a VERY precise distance you need your blades from the edge. It's like no more gap than 2% of blade radius or something like that. If it's more than that VERY narrow gap the rotor tips will still create vortices where high and low pressure air cancel out.I'd leave a link but... Well...
See, constraining the thrust vector in a true jet engine assists in managing thrust because after the compressor there's additional combustion creating additional force.
Anyway, I love your work and the testing is great for additional data-points. Keep it up!
Impressive work! I realize you're selling some STL files, but have you thought about making videos showing your design process? I'm not suggesting full tutorials, but I'm sure a lot of people would be interested in seeing some of the CAD work, like some tips and things you learned while 3D modeling, etc. Many 3D printing channels on UA-cam also show some CAD work as part of their videos. In my opinion a 3D printer is really quite limited if you don't know how to create your own designs, and I have no doubt your audience would enjoy it given your clear skills in this domain.
Thankyou so much for your suggestion sir...I will definitely add some clips and tips for helping people out.
I tell you what...if you check my previous videos...I have created three tutorials of really complex design ( you can check that too ) and those videos were having few views so i thought people were not interested in watching it....so I have skipped that part...
But now i am sure to add a little clips so people can enjoy it.
Btw the updated version of this EDF will be updated within a week...
So thankyou for watching it and don't forget to subscribe 😊😊😊😊
Very good well done my friend, this is why I sub to your channel. Very talented person, hope to see more of your work in the future. Is this your hobby something you love to do, or do you take engineer or mechanical in school ?
There is a thrust and speed dynamic going on there."The higher the airspeed, the more mass flow through the engine, but the smaller the difference between the exit and entrance velocities. Hence increasing the speed of an aircraft can make the thrust increase or decrease. Usually there is an initial increase in thrust, followed by a decrease with increasing speed."
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Sir, I would like to do this project too(for my self) but one thing i need is the arduino code for the server. Where can i find that sir?
The large variety of pressures/temperatures in a jet engine make variable convergent nozzle nevessary. The pressure changes for an EDF are negligible in comparision, so finding one optimum nozzle ratio should be the goal. On either side of this optimum, you're either just going to balance out efficiency with increasing reaction force against ine nozzle vanes if too small, or lose pressure quickly if too big.
Well I also thought that combustion must be necessary for Converging nozzle but I need to test it practically....
As mentioned in the video...I want to check it, till i eliminate all the possibilities.....
The updated video will be out soon...
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I'm being pedantic - really appreciate your dedication to experimental efforts!
Good gob dude
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Nice work bro
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I am ulrade did it
If you want an easier way to restrict airflow without disrupting it, you can make something that I 'll try to describe.
On the back of the BLDC motor you continue with a solid cylinder with the same diameter as the motor and after some length of steady diameter, it ends up in a relatively long cone.
Outside the fan case, you continue to the back with cylinder with diameter a little more than the fan case, so that it can slide forward, making the duct longer and when it reaches the point where the internal cylinder turns to a cone, it starts to shrink in diameter keeping the cross section of the duct constant.
When you need to reduce the output cross section, you simply move the outer cylinder forward.
Crude schematic (the end cones should be much longer and smooth):
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You should try thrust test of 50mm or 64mm edf also.(3d printed)
Yes definitely will try.
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Nice
Thankyou so much for watching it...
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super cool video, also captions would have been nice at times.
Thankyou for watching...Next time I will put captions too.
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6:43 3s batt thrust 570
4s batt thrust 772
7:18 3s batt thrust 772
4s batt thrust 570
Bro watch it again and then recorrect it....some values are wrong...😊
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Amazing. Can the levers be made more aerodynamic?
You mean blades at the back or the black arms which are moving the blades ?
Well in my upcoming update I have modified this engine with a more aerodynamic design, the video will be out soon
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@MechNinja I mean the arms moving the blades. I would absolutely love to use your design, but I need the smallest possible drag from the arm levers. Great, I'm eager for your update!
You just wait for a week...the updated version of this EDF will be out soon. You can take that design.
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@@MechNinja subscribed!
I would love to purchase this for testing please!
themechninja.com/product/variable-nozzle-edf/
Here is the link below and don't forget to subscribe
I like variable pitch more but interesting.
Thankyou for sharing your views....and thankyou for watching and don't forget to subscribe 😊😊😊😊
@@MechNinja Check out adaptive ducted fans,variable pitches and variable stator vanes.
Do check my latest video....I have improved this design.....
@@MechNinja The CFM RISE new open fan jet engines are claiming 20% more efficiency than ducted and are claiming electric hybrid capable.Vari pitch and various stator
This is a cool project, but it seems a bit weird to me for a ducted fan. How do you calculate your efficiencies? This is not a jet engine, a nozzle should only decrease thrust and propulsion efficiency. A fan engine produces thrust by increasing the momentum in the incoming air p = m * v. The propulsion efficiency is eta _p = 2 / (1 + (v_exit / v_inlet) . So you want the maximum mass flow with the smallest change in velocity to get the highest efficiency. Nozzles come into play when you use combustion. In simple terms, you create pressure, that you convert to velocity in the nozzle.
Thank you for your suggestion. I also thought that the combustion is necessary for the variable nozzle because of Bernoulli's principle. But since I only had theoretical data so i want to check it practically. I want to check all the possibilities before coming to a conclusion, as my future projects are detailed and complex.
And regarding the efficiency, i calculate it as the ratio of thrust to power and generally every manufacturer takes it. And to Calculate the propulsion efficiency, I need much more data. In my upcoming projects I will be more detailed in terms of efficiency.
The updated version of this EDF will be uploaded within a week.
Thankyou for watching and don't forget to subscribe
@@MechNinja I actually studied aerospace engineering with a focus on aircraft propulsion and space propulsion, so I'd you have any questions, please feel free to ask :). For the testing I noticed power levels fluctuating quite strongly, especially with the converging nozzle. That might throw off your measurements and calculations. What is your future project of I may ask?
And i studied mechanical engineering...and this is one of the fields I am interested in. Actually I work in robotics stuff too. For power fluctuations, I will try to use a more powerful source that will reduce the voltage drop and increase the accuracy. As per now..I only want you to give your knowledgeable views ( like the one you gave this time ) on my upcoming projects so that I can improve my work...
And my future project is to make an efficient EDF....not powerful but efficient as I need much time of flight....
Bhai i m from India rajasthan if u want i have a 2227 edf 3500 kv 3-4s for sale it quite powerful puts about 1.8kg thrust on 4s
Mail me at gau78603789@gmail.com
Plse ser give free file
Mam free is not possible... Ok can give you 10 % off.
Please try to understand 🥲
it's 12v not 2.5Mv
Thankyou for mentioning at.
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It's 2500 rotation per minute, per volt.
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Keep work hard.... too much hard, because it's not looking good.
Thankyou so much for watching....The next update will be out soon.
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