You did several things really well. You were transparent about everything including mistakes or failures. Those are part of good engineering processes. Right? What I liked is that you didn't bore me. You have a real knack for teaching and the video contained just enough information to be thorough without boring. What a cool project too. Thanks.
Bovey Zheng yeah I know I was trying to put a comment on another video which aeroplane and it tried make me try airplane, and then I realised I was on the American English keyboard so I changed it
I've always liked the shotgun starts in planes like the F3F and FM-2. Short of that, watching an old Clerget or Gnome get spun over by hand is always cool.
Some people still start engines that way. For instance, you might do that on a Piper Cub or Taylorcraft that didn't have an electrical system offer after. Or for a homebuilt using a VW engine.
they do intend to use methane for rockets on Mars (for chemicals reasons cause the components are in the atmosphere there)... and methane is kinda fart, isn't it ?
Fachry Billal you mean he or that idea (that idea is trash because it would be really,REALLY hard to fly and the reason behind it is that It’s heavy and it would not even get in the air for long and coca cola doesnt make so much air pressure so it wouldn’t fly)
I'm impressed with what you achieved, it's harder than it looks! I had an air pressure toy plane as a kid and I recognize the very same problem here: air leaks. As soon as you unplug the pump you can clearly hear a leak. I believe this an inevitable problem because even when you seal it perfectly, after a couple runs and impacts on the ground it will start leaking again.
Also a ramp with powered spring to launch the plane. An electric pump to fill the air. I was getting exhausted just looking at him getting out of breath.
Constant PSI via a pressure regulator and perhaps at the same time lowering the pressure and increasing the volume to the motor in combination with a larger propeller with a more aggressive pitch?
Hey Tom! Could you try putting something like Liquid nitrogen or Dry Ice+Hot water into the fuel tank? It could provide a continuous supply of pressurized gas as it evaporates, vastly increasing the volume of fuel and looking badass at the same time.
With a strong enough container you could chuck in some dry ice, seal it and let it come to room temperature, which if cody's lab is anything to go by can generate ~1500 psi (if memory seves correctly). The question then is letting the pressure out slowly enough to not break apart the engine.
That should be manageable with a pressure reducer. The more urgent question here is: Where to get a very light bottle and light equipment (suitable to be carried by an aircraft) that can hold 1500 psi.
I think you can get carbon fiber canisters designed for paintball and stuff. Anyway (technically) he could just scale the size of the aircraft to make the weight manageable (but I understand that might not be feasible). A more practical idea would be to fit a simple pressure release valve like you'd have in a heating boiler.
@@InfamousAMH actually depending on witch valve/turbine system he is using is dependent on what type of spring he needs and he has a shitty 1 way ball valve witch it dose not let much air past quickly like a butterfly so it can need a stiffened spring for high pressure (for a butterfly)yes in most cases but could work just as well on a low intensity spring dew to his method on how his turbine is designed in witch is a crank with a simple piston and the air pressure pumps it round but not to 100% completion when downside so the spring dose what gravity would do so he dose not need a strong spring... and dont call hi there a idiot
"I've got the transmitter in position" *sets it down 6 feet behind him and then steps away even further while launching* Neat video, but that did make me chuckle.
This takes me back to my first AirHogs plane, you would pump it up and start the prop and throw it, and it would fly in big circles overhead. I loved it as a kid. What kind of results do you think you would get if you tried to run a plane off a disposable CO2 cartridge? The kind that goes in BB guns. (I'm guessing there's not enough gas in there but what do I know.)
I personally hate transmitter straps when using hand launched planes. I threw one of my wings once and while my hand was coming into grab the transmitter, I pulled the strap and it caught on the throttle. Straight to the ground, full throttle, big mess.
I absolutely fell in love with your channel. I used to build planes like that long time ago and left that hobby 20 years in the past. Now that I see it, I've really missed this stuff. Best kind of hobby! I still have one original compressed air Air Hog motor in my storage and will never throw it out. Keep it up, this is great! Cheers
If the engine can take higher PSI it would be interesting to use a carbon fiber reinforced air tank that could take several hundred PSI....and perhaps a regulating valve could be placed between the tank and the engine. That might give a more reasonable flight time.
That's what I was thinking, a few thousand PSI and a servo-controlled throttle valve is a much better idea to me. It might be possible to produce (or buy) a small air tank good for very high pressures.
CO2 cartridges are expensive, compressed air is cheap :) BTW it doesn't matter if the air tank weighs more than the plane. It's typical in electric RC flying for a battery pack to weigh more than the plane, so it's fine. A very high pressure system requires an appropriate compressor, though, and a suitable regulator--ideally with throttle valve. That way, you just take off from the ground, and have a normal throttle on your radio.
A long fuselage, entirely of bottle sections,would have a larger energy to weight ratio, be very rigid in bending when pressurised and eliminate the existing thin fuselage
Well done mate. Great to see someone using their University Studies to teach others in a fun way. Reminds me a little of Engineering Explained channel. Keep up the good work!
I don't really think that would be efficient enough to justify it's size, single cylinder is probably the best way to go if he wants the thing to perform. I bet it would sound cool though.
My setup uses a 180 degree twin.. 550psi at 1.8 liters, regulated down to 105psi at take off then restricted to 55 to 60psi of line pressure after I gain a little alt.. at 55psi I get 3 minutes of powered flight however the CC of his single cyl engine is prolly 10 to 15% more then my twin. I went With a 180 degree twin due to reasons to long to type but moreless I could get a little more torque from the twin vs a single with a smaller total compression area. This system has very interesting properties that I fully plan to dig in to more. My setup (be it a LOT more complex then his proof of concept) provides powered flight for a length of time that is surprising to many. We could get much more flight time if we build A motor large enough to spin a much larger prop and a wing area large enough to provide enough low speed lift to carry a 13 to 20ci 4500psi bottle with a engine running at something like 80ish psi and consuming 300 to 400psi a minute from the bottle.. a few prototypes and I do believe that a plane with decent preformance and power would be able to be made and it wouldn't just be enough power to keep it in the air to find a thermal.
MaxTheKanuck a two cylinder motor would be more effective because the other cylinder would assist the other arranged on a drive shaft would create plenty of power.
I'm going to try to build a multi cylinder version, the hardest part to figure out is the crankshaft. I may have an idea though. The rest is just finding an o ring the right size and getting the dimensions of it to build the engine around.
reminds me of a turbo prop. instead of using the jet engine to directly push the plane forward it drives a propeller doing most of the work. Maybe a design with a turbine would work better than a piston solution
Turbines need to be north of about 150 horsepower before they become more efficient than a piston engine. The physics doesn't scale 100%, you can't build up the correct pressure differences without an astronomical rpm compared to a large turbine so they never end up efficient no matter how well you make it.
Send this link and a file to the flitetest,channel and Peter stripol,I bet they would get a kick out of trying to make their own versions of your motor.
I just got into 3-d printing and happened across your channel...very awesome stuff! Glad to have people like you in the hobby willing to share your projects!
Pretty impressive results, the sound really sells it! I'm trying to wrap my head around the efficiency of the motor. Can it actually outperform using the air pressure in the bottle as a simple jet of air? My only guess would be more turbulences around the jet than with a propeller. That would still be kinetic energy as an undirectional chaotic kind of waste.
The problem with a jet would be that it would have to be very small so as not to drain the tank in a couple of seconds. That would mean you have a small very high velocity jet which wouldn't gain much traction and would be ineffecient in a much lower airspeed craft. It would be similar to putting a tiny high ptich propeller on which wouldn't work.
Hi Tom, always a pleasure to see your videos. It look the engine is lack of power compared to this huge propeller. This is a problem I often encountered when building Free-Flight planes, a smaller propeller or a different pitch can do a big difference. Thanks for sharing !!
One use a lanyard so the controller Two a shot of wd40 in your air tank, less friction in the motor means more rpm, and less wear on the piston and cylinder. Three buy an 12v little air pump that plugs in to your car, save your muscles for getting it airborne.
Servos on the tail ARE NOT a good idea for many reasons. Weight and balance, pitch/yaw inertia, etc. Interesting project. A transmitter strap would be a useful addition, too. Never thought of RC as aerobic, but you've proved me wrong. ;-)
Joni. I used to fly HLG all the time. I sometimes even HLG'd my SD-100 sailplane, a 100"'er, even got a small thermal on one hand launch, but only about a 5 minute flight on that one. I was really hoping to get up a ways into a 2 hour type flight, but alas... I would like to try some discuss launchers, but unfortunately my arm is not what it used to be after a MAJOR break with a long recovery.
I’d love to see a seaplane where the fuselage and pontoons are the bottles connected with some plastic tubing, or a larger plane with extra bottles suspended under the wings!
Just a shoutout from an ordinary person... Feeling that i am so backward in invention.. thanks for lifting up my spirit to be motivated in my works, study and reasearch.. you are cool like Tony Stark 😊🤘🏼🤘🏼🤘🏼
5 лет назад
Congrats Tom! Watching your works for few years and you've done amazing improvements!
Maybe some auxiliary tanks would give it a good flight. Maybe a long, slim tank down the back or a tank inside the wings would give it enough juice for a 100m flight? The odd 50m you got already is pretty impressive. Also a big fan of your ebike series.
You know, that compressed helium is heavier that expanded floating nearly free? Just think about the number of particles in the same place. To generate lift, they need space. A heliumbottle isn't floating at all - but if you put this helium into baloons and hook the bottle to them it will.
How about trying to start the engine by throwing it? You are losing a huge amount of power holding it and idling before tossing it. If that doesn't work, perhaps go back to the drawing board and devise a remote starter. That would be awesome in its own right not to mention very useful.
Great work. I bought an airhog for my kids way back around 2002. It may be worthwhile mentioning that we still do not fully understand how an airfoil-shaped wing really works.
You and I don't, but I think people who make aerodynamics their life's work have a pretty good handle on it. The inability to describe a physical phenomenon and the associated set of equations in a few clear words, without resorting to math, does not imply a lack of understanding. Lots of times, explanations I hear that people claim are incompatible are like the 6 blind men and the elephant. (Apologies to actual blind people, who are likely smarter than the guys in the story.)
@@sapozhnikkonnik1839 Is that a mathematical certainty? Just asking, because those bottles aren't very heavy. I was thinking the same principle could be used with the same tough bottles in the three-litre size, still end-to-end, to add two litres to the overall capacity and run-duration, without the extra diameter causing disproportionate increase in air resistance. But I daresay Tom had done the maths to see if it would gain more than it would lose. Brilliant video, and as others have said, SO much better for including the failures as well as the successes.
What about adding an helium balloon just so the plane has zero weight ? You could then add a more solid/heavier air container (thus allowing a longer flight).
@@snppla not exactly... a blimp is much slower and mostly flight thanks to his weightless parts. Here I suggest just enough helium so he can add more compressed gaz with a more solid container.
Very interesting, I bet someone either has or will figure out some way to weaponize this concept it has a potential of stealth/cost-effectiveness. I enjoy watching you try to make the crazy possible. Thanks
Those "Air Hog" planes were the ultimate in air powered design and engineering. I bought one for you young Son, pumped it up, and sent it into the air, it caught a tail wind and went nearly a ¼ mile into some trees, We were never able to find it, so I bought another.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
Who else likes the sound of the plane starting?
Reminds me to a P47 or F4U engine start. Takes a lot of explosions
It starts like a ww1 plane
I have started loving the sound
The sound of starting piston engines is very cool.
Plane: toof toof troof trootroo trtrtrrrtrtrrrrrrrrrr...
Ppl: woooa that sounds cool!
Sounds like a Briggs and Stratton
You did several things really well. You were transparent about everything including mistakes or failures. Those are part of good engineering processes. Right? What I liked is that you didn't bore me. You have a real knack for teaching and the video contained just enough information to be thorough without boring. What a cool project too. Thanks.
Miguel P I agree
Miguel P Mate I agree
I'm really impressed that nobody has made the joke "so it's an airplane"
I actually just made that joke before i scrolled down. Great minds think alike?
In British English it's spelt AEROplane
Bovey Zheng well they obviously don’t speak English
Bovey Zheng yeah I know I was trying to put a comment on another video which aeroplane and it tried make me try airplane, and then I realised I was on the American English keyboard so I changed it
Imania shit, man!
The potential energy from the compressed air is quite interesting. Especially considering the low weight.
Blah blah blah blah blah blah blah blah i'm a fart head blah blah blah
@@shatterpointgames at least he knows what hes talking about you infertile plebian
@@penidchristmas9577 lol did you just call me infertile?
@@shatterpointgames perhaps, depends if you can read
It actually has extremely low potential energy compared to the weight of any other fuel.
Love how you don't sensor the failures. That's how science is done
censor?
alex medel martinez edit out
Edit: oh wait you were correcting him weren’t you?
@@Raonodar trying to
Well.. Technically all we do in science is the opposite.. sensor the failures and don't censor the failures.
@@sylasviper715 lmao
at 11:03 reminds me of cold starts of old engines
I am never around them but it sounded so familiar for some reason
@@Bepis13 from cartoons if they had to drive a old car or other movies
bobbycorbin3 same
Give it choke!!
Can I mail you a portable air compressor?
That faulty startup sounds like an old warbird.
Exactly! Like an F4U or FW190
I love the fact that you have to spin the prop to get it going. It reminds me of the ww1 biplanes that were started that way.
I've always liked the shotgun starts in planes like the F3F and FM-2. Short of that, watching an old Clerget or Gnome get spun over by hand is always cool.
Some people still start engines that way. For instance, you might do that on a Piper Cub or Taylorcraft that didn't have an electrical system offer after. Or for a homebuilt using a VW engine.
Of course, it can be really dangerous if not done right.
What about filling that bottle up with dry ice, so that bottle will always be compressed
That a great idea
@@MRA_3 fuck you!
@@MRA_3 heavier but would also store more energy. The real problem would be over pressure and the cold affecting the integrity of the air tank.
@@fachrybillal9326 why ?
@@eternalfire1244 yeah that could also be the case
Thank you so much for taking the time to make the plane the right way. Some people are just clueless when I see these types of videos
David
Rude.
2019 :air powered engine
2050:fart powered commercial boeing 787
they do intend to use methane for rockets on Mars (for chemicals reasons cause the components are in the atmosphere there)... and methane is kinda fart, isn't it ?
illusion 1000
Boeing FP 787
I can’t wait for that. You gunna make it? Just need the highly flammable methane gas and it would acc work just at huge cost of getting farts
If you store rotting corpses in the luggage compartment you can power your 787 using the methane. That would be a good movie too - - *Barf*
use mentos and coke for fuel
Ram jet?
It gonna way heavy for flying. They just get launch so fast
@@paimonismyemergencyfood4332 is crazyy!!!!!!!!
Fachry Billal you mean he or that idea (that idea is trash because it would be really,REALLY hard to fly and the reason behind it is that It’s heavy and it would not even get in the air for long and coca cola doesnt make so much air pressure so it wouldn’t fly)
@@frnq7987 stfu please
@@frnq7987 dont try to act smart we know
I'm impressed with what you achieved, it's harder than it looks! I had an air pressure toy plane as a kid and I recognize the very same problem here: air leaks. As soon as you unplug the pump you can clearly hear a leak. I believe this an inevitable problem because even when you seal it perfectly, after a couple runs and impacts on the ground it will start leaking again.
THIS is what the engineering process looks like in reality!
Yea, everything comes with experimenting, experience and science.
You should use a neckstrap for your radio, just saying :)
That's a great suggestion! That way he's not using up half his compressed air reaching for the radio! Just start, chuck it, and fly.
Also a ramp with powered spring to launch the plane.
An electric pump to fill the air.
I was getting exhausted just looking at him getting out of breath.
This is just plain stupid
icepl4net Plabe stupid
i
The engine sound is so nice ^^
I don't wanna spoil 42 likes but I agree.
it sounds like a gasoline motorcycle engine
I have used 150psi in them bottles
I wonder if you can make a pressure regulator and run the motor at 60psi constant
Fun to watch thanks
YESSSSS lol!!!!!!!!!
Maybe set up a servo as a throttle valve. And buy an air compressor.
there is a thing called a pressure regulator that does just that... i dont know if it would make it too heavy though...
Constant PSI via a pressure regulator and perhaps at the same time lowering the pressure and increasing the volume to the motor in combination with a larger propeller with a more aggressive pitch?
mechanical versions exist that are only a few pieces of metal plus springs, not that big
10:30 I absolutely loved how the engine wouldn't start immediately when cold, just like normal IC-engines :D Pure gold that was!
You need a damn lanyard for your controller. Lol
You are really Passionate about your project...
I Salute you for that ☺️
true
Kunal Changoiwala g
Kunal Changoiwala I
I think you guys were too young when air hogs was out, air powered plane. Awesome times as a kid!
Kunal Changoiwala is
Hey Tom! Could you try putting something like Liquid nitrogen or Dry Ice+Hot water into the fuel tank? It could provide a continuous supply of pressurized gas as it evaporates, vastly increasing the volume of fuel and looking badass at the same time.
I really like the idea mate, wonder if the pressure would be enough though. I would be very interested to find out
With a strong enough container you could chuck in some dry ice, seal it and let it come to room temperature, which if cody's lab is anything to go by can generate ~1500 psi (if memory seves correctly). The question then is letting the pressure out slowly enough to not break apart the engine.
That should be manageable with a pressure reducer. The more urgent question here is: Where to get a very light bottle and light equipment (suitable to be carried by an aircraft) that can hold 1500 psi.
I think you can get carbon fiber canisters designed for paintball and stuff. Anyway (technically) he could just scale the size of the aircraft to make the weight manageable (but I understand that might not be feasible). A more practical idea would be to fit a simple pressure release valve like you'd have in a heating boiler.
One potential problem is that the sheer volume of expanding gas could freeze up the engine, But i'm not sure if that would really happen on this scale
That is amusing, it has the same engine problems as early aircraft xD
Xortsa why is it that I only see people on the right with these photos?
what was that?
Colobrinus With a side of cube Idk? Most people are on the right. I have still seen some on the left though.
What u guys
You would have to start it manually before you get in the plane by spinning the propellor
Anyone remember AirHogs air powered free flight planes?
I'm surprised he didn't mention it. They had a submarine too.
I had the onithopter, or whatever it was called. The one that had wings that flapped and functioned similarly to a bird's.
Glad someone remembers.
I remember my brother had one that was electric, and powered by a supercap back in the mid 2000's no less.
WindWolfAlpha I had that but it NEVER ONCE FLEW I followed every instruction too!
“It’s a bird!” “It’s a plane” “ITS SUPE-wait, no, it’s, it’s a plane”
You need an assistant, definitely!
Mm! Then one could wind and throw it, and the other could steer the plane when its in the air. :)
Our names 😯
filipe brandao - and you need a boyfriend like me 😃
Awesome craft, Sir.
I was a bout to say the same !
Probly need new spark plugs
Good job man very clever bloke you👍🏽
^^
nah mate it's just the octane rating of his fuel... If he splashed out on proper kerosene he wouldn't get so much knocking.
well I did some research and found out that he needs to check his fuel line & his carborater
Stupid idiot s it's air powered
whooosh
Higher pressure-stiffer spring. Lower pressure-softer spring
Max Prentice noooo duuuuhhhhhhhh
@@InfamousAMH why
hi there that’s simple af
@@InfamousAMH why no cuz it's simple?
@@InfamousAMH actually depending on witch valve/turbine system he is using is dependent on what type of spring he needs and he has a shitty 1 way ball valve witch it dose not let much air past quickly like a butterfly so it can need a stiffened spring for high pressure (for a butterfly)yes in most cases but could work just as well on a low intensity spring dew to his method on how his turbine is designed in witch is a crank with a simple piston and the air pressure pumps it round but not to 100% completion when downside so the spring dose what gravity would do so he dose not need a strong spring... and dont call hi there a idiot
5:40 It sounds like the *”BRRRRT”* of an A-10 Warthog
Have you ever wondered that if u hear the ”BRRRRT” you weren’t the target
K K I have heard that before
Joshua Lewis yup i stealed it
@@User-xp4kl stole*
"I've got the transmitter in position"
*sets it down 6 feet behind him and then steps away even further while launching*
Neat video, but that did make me chuckle.
"Water rocket industry"
I think I've found my dream job...
Joshua Barretto lol, water rockets are pretty fun.
subscribe me
Joshua Barretto
PC Games 12 never
This takes me back to my first AirHogs plane, you would pump it up and start the prop and throw it, and it would fly in big circles overhead. I loved it as a kid.
What kind of results do you think you would get if you tried to run a plane off a disposable CO2 cartridge? The kind that goes in BB guns. (I'm guessing there's not enough gas in there but what do I know.)
I had the same one
Yup! And you could bend the fins to make it fly different ways. Lost two in the trees 😂
A company called Gasparin makes little CO2 engines, much smaller and lighter than this one. Generally, CO2 is likely to have much more pressure.
why don't you use a transmitter strap????
I personally hate transmitter straps when using hand launched planes. I threw one of my wings once and while my hand was coming into grab the transmitter, I pulled the strap and it caught on the throttle. Straight to the ground, full throttle, big mess.
Marc, so don't do that with your hand. It's not the strap's fault. Just learn how to use it.
It would have saved him so much time in this video.
Yeah, it was killing me watching him struggle, when there is such an easy solution.
Yes, run run run tom!!! or use the strap of your taranis ;-D
People have been launching DLGs with Tx hung on their neck back in the 35MHz days, with those long rods sticking out. It's not hard.
I absolutely fell in love with your channel. I used to build planes like that long time ago and left that hobby 20 years in the past. Now that I see it, I've really missed this stuff. Best kind of hobby!
I still have one original compressed air Air Hog motor in my storage and will never throw it out.
Keep it up, this is great! Cheers
Hope your career is going well. I spent 47 glorious years in aerospace engineering and enjoyed every minute of it. You have a great future.
11:00 cold start?
i think i have to build a 4 cylinder inline :D
If the engine can take higher PSI it would be interesting to use a carbon fiber reinforced air tank that could take several hundred PSI....and perhaps a regulating valve could be placed between the tank and the engine. That might give a more reasonable flight time.
Even a 13ci carbon 4500psi tank would be FAR to heavy for a build like that. Far far far to heavy.
rapping of the bottles should get a lot more pressure
That's what I was thinking, a few thousand PSI and a servo-controlled throttle valve is a much better idea to me. It might be possible to produce (or buy) a small air tank good for very high pressures.
Way too heavy... It'd weigh more than the entire plane. A threaded C02 catridge might be a better idea, if you can make a light enough regulator.
CO2 cartridges are expensive, compressed air is cheap :)
BTW it doesn't matter if the air tank weighs more than the plane. It's typical in electric RC flying for a battery pack to weigh more than the plane, so it's fine.
A very high pressure system requires an appropriate compressor, though, and a suitable regulator--ideally with throttle valve. That way, you just take off from the ground, and have a normal throttle on your radio.
A long fuselage, entirely of bottle sections,would have a larger energy to weight ratio, be very rigid in bending when pressurised and eliminate the existing thin fuselage
Well done mate. Great to see someone using their University Studies to teach others in a fun way. Reminds me a little of Engineering Explained channel. Keep up the good work!
Sounds like a real engine man. I like how you work hard for it.
You should try to replace the airtank with a Co2 cartridge and see what happens =)
It would just instantly go bang
That might happen, haha. But I think it could be possible if the construction is changed for operating with higher pressure.
Either too heavy or not enough gas.
Same idea, but with a regulator. Might be a bit heavy, but it'll run consistantly.
0.5 coke bottle with a CO2 dispenser drilled in the arse. Light, high pressure but with some expansion.
can you try making a multicylinder air engine?
I was just thinking a radial air powered engine would be really cool.
I don't really think that would be efficient enough to justify it's size, single cylinder is probably the best way to go if he wants the thing to perform. I bet it would sound cool though.
My setup uses a 180 degree twin.. 550psi at 1.8 liters, regulated down to 105psi at take off then restricted to 55 to 60psi of line pressure after I gain a little alt.. at 55psi I get 3 minutes of powered flight however the CC of his single cyl engine is prolly 10 to 15% more then my twin. I went With a 180 degree twin due to reasons to long to type but moreless I could get a little more torque from the twin vs a single with a smaller total compression area. This system has very interesting properties that I fully plan to dig in to more. My setup (be it a LOT more complex then his proof of concept) provides powered flight for a length of time that is surprising to many. We could get much more flight time if we build A motor large enough to spin a much larger prop and a wing area large enough to provide enough low speed lift to carry a 13 to 20ci 4500psi bottle with a engine running at something like 80ish psi and consuming 300 to 400psi a minute from the bottle.. a few prototypes and I do believe that a plane with decent preformance and power would be able to be made and it wouldn't just be enough power to keep it in the air to find a thermal.
MaxTheKanuck a two cylinder motor would be more effective because the other cylinder would assist the other arranged on a drive shaft would create plenty of power.
I'm going to try to build a multi cylinder version, the hardest part to figure out is the crankshaft. I may have an idea though. The rest is just finding an o ring the right size and getting the dimensions of it to build the engine around.
Now, make a v12 engine like that and power it with 6 bars of presure (or 87 psi)
Fluburtur 6 bars is alot of alcohol
Fill the plane from a 1lb propane camp stove bottle. On a cool day pressure will be just about right and no hand pumping required.
if you fill it with propane why not make an internal combustion engine
can't work too bad with 3d printed stuff I guess
That third trail at 6:23 is very touching. I expected it to fail but wanted it to work, and the fact it did work gave me goosebumps. Fantastic work!
This is great. I know we all can get cheap rc plane and it fly better and longer, but new ideas like this is always the beginning of something better.
reminds me of a turbo prop. instead of using the jet engine to directly push the plane forward it drives a propeller doing most of the work. Maybe a design with a turbine would work better than a piston solution
Exactly what I was thinking, turbine should be more efficient and simpler then air piston.
I thought its not working 3D printed, but actually it does.
ruclips.net/video/6rX4xv5-NvE/видео.html
DaT0nkee t
Im agree with you
Turbines need to be north of about 150 horsepower before they become more efficient than a piston engine. The physics doesn't scale 100%, you can't build up the correct pressure differences without an astronomical rpm compared to a large turbine so they never end up efficient no matter how well you make it.
Send this link and a file to the flitetest,channel and Peter stripol,I bet they would get a kick out of trying to make their own versions of your motor.
cartmanrlsusall yeah dude that can be a great idea
10:54 You've created the world's first aircraft powered by a hit-and-miss engine :)
Andrew Free Fire kkkkkk
I just got into 3-d printing and happened across your channel...very awesome stuff! Glad to have people like you in the hobby willing to share your projects!
Talking of 40k subs....now you're near 225k and you definitely deserve it. Well done!
Tom ... you are like Buster Keaton, Laurel and Hardy AND the three stooges incarnated in one curious kid. Luv it! Thanks for sharing!!
Great Work Tom, Keep going on...I wish all the best for your future projects/
Pretty impressive results, the sound really sells it!
I'm trying to wrap my head around the efficiency of the motor. Can it actually outperform using the air pressure in the bottle as a simple jet of air? My only guess would be more turbulences around the jet than with a propeller. That would still be kinetic energy as an undirectional chaotic kind of waste.
The problem with a jet would be that it would have to be very small so as not to drain the tank in a couple of seconds. That would mean you have a small very high velocity jet which wouldn't gain much traction and would be ineffecient in a much lower airspeed craft. It would be similar to putting a tiny high ptich propeller on which wouldn't work.
U can use 2 bottles and 2 propellers .... the weight will be increased a little but it will give more thrust.
Hi Tom, always a pleasure to see your videos.
It look the engine is lack of power compared to this huge propeller. This is a problem I often encountered when building Free-Flight planes, a smaller propeller or a different pitch can do a big difference.
Thanks for sharing !!
Did you try a larger prop? Lower RPM migth use the pressure better and it uses less air (maybe :))
i was thinking that but the problem isnt run time its lack of thrust
Large prop has better static thrust. I suspect this engine type cannot get good power at high rpm because of to much resistence.
Do you mean large in sense of diameter or pitch ?
Jack Edwards Larger diameter and pitch :) Look at the props for rubber motors, they have the same problem.
It has plenty of thrust at the start of the run. The larger prop could extend that high-pressure time.
I was thinking about the same thing. Use larger bottles for the Fuse, and smaller wing tanks, like a U2.
One use a lanyard so the controller
Two a shot of wd40 in your air tank, less friction in the motor means more rpm, and less wear on the piston and cylinder.
Three buy an 12v little air pump that plugs in to your car, save your muscles for getting it airborne.
The engine is plastic. Wd40 would damage it. Silicone based lubricants are suitable for plastics.
A Homo sapiens male is not likely to save on muscles.
I loved your demonstration and willing to show that it is possible to fly a model without electric or gas
Great idea. Now the version 2.0
Servos on the tail ARE NOT a good idea for many reasons. Weight and balance, pitch/yaw inertia, etc. Interesting project. A transmitter strap would be a useful addition, too. Never thought of RC as aerobic, but you've proved me wrong. ;-)
You should try som DLG flying, that will give you an exercise :D
Joni. I used to fly HLG all the time. I sometimes even HLG'd my SD-100 sailplane, a 100"'er, even got a small thermal on one hand launch, but only about a 5 minute flight on that one. I was really hoping to get up a ways into a 2 hour type flight, but alas... I would like to try some discuss launchers, but unfortunately my arm is not what it used to be after a MAJOR break with a long recovery.
you should try powering it off dry ice
I thought that too, basically a dry ice bomb that vents for propulsion instead of exploding.
I’d love to see a seaplane where the fuselage and pontoons are the bottles connected with some plastic tubing, or a larger plane with extra bottles suspended under the wings!
Just a shoutout from an ordinary person... Feeling that i am so backward in invention.. thanks for lifting up my spirit to be motivated in my works, study and reasearch.. you are cool like Tony Stark 😊🤘🏼🤘🏼🤘🏼
Congrats Tom! Watching your works for few years and you've done amazing improvements!
Coolest red head ever, I wish I knew smart people like you
Maybe some auxiliary tanks would give it a good flight. Maybe a long, slim tank down the back or a tank inside the wings would give it enough juice for a 100m flight? The odd 50m you got already is pretty impressive. Also a big fan of your ebike series.
I think you should try dry ice instead of compressed air. It may protect the piston from ceasing and keep it cool. May also produce long run time
I appreciate the hard work you put in to the video
Another excellent vid. I just saw and commented upon your vacuum-powered car, then I find this. Very well done.
Ha “air” plane hahaha.... ok nvm
9:01 WHEN YOU REMEMBER YOU LEFT THE OVEN ON
Francisco Maçã I clicked and got an ad for a kia
@@pjanoo6973
Lol XD
I laughed so hard xD
@@Nightsaberban is fuck!!
Try using helium for more lift
MKH lol wat
MKH I hope your being sarcastic, if so, you are hilarious xD
Sebastian no, that's a great idea, the helium to propel it and lift it
Sebastian I was going to say it if nobody else had
You know, that compressed helium is heavier that expanded floating nearly free? Just think about the number of particles in the same place. To generate lift, they need space. A heliumbottle isn't floating at all - but if you put this helium into baloons and hook the bottle to them it will.
Thanks for the video, and congrats on your aerospace engineering degree. :)
8:32 the look of joy and accomplishment you gave the camera 😂
Next make a compressed air helicopter.
@jaro g lmao
This is a real AIRplane
How about trying to start the engine by throwing it? You are losing a huge amount of power holding it and idling before tossing it. If that doesn't work, perhaps go back to the drawing board and devise a remote starter. That would be awesome in its own right not to mention very useful.
Something like a Cox spring starter might work, if it wasn't too heavy.
Great work. I bought an airhog for my kids way back around 2002. It may be worthwhile mentioning that we still do not fully understand how an airfoil-shaped wing really works.
You and I don't, but I think people who make aerodynamics their life's work have a pretty good handle on it. The inability to describe a physical phenomenon and the associated set of equations in a few clear words, without resorting to math, does not imply a lack of understanding. Lots of times, explanations I hear that people claim are incompatible are like the 6 blind men and the elephant. (Apologies to actual blind people, who are likely smarter than the guys in the story.)
love the grin on your face at 9:21, haha! excellent videos.
Maybe a 12gram CO2 cartridge with regulator....
You’re a genius!! Very inspiring!
I would change the engine from a single cylinder to an in-line 4 cylinder, and a bigger air tank. Otherwise this is amazing.
The added weight and higher compression wouldn't really be worth it I'd assume. High pressure engine's scare the crap out of me.
This is how many people who want to see u make a jet engine
Might want to lubricate the cylinder. Pam cooking spray works well,( don't eat that stuff though). 70lb pressure. Awesome job! Thanks for the video.
It sounds like a lawn mower engine 😂
why would somebody dislike this?
Owen hack I didn’t dislike it but perhaps people do so because it didn’t actually achieve powered flight.
You should have made the whole fuselage, nose to tail, out of bottle for more air capacity.
Kittelizer Laurelott it wouldve made it heavier so that means a better engine so that means it takes more fuel
@@sapozhnikkonnik1839 Is that a mathematical certainty? Just asking, because those bottles aren't very heavy. I was thinking the same principle could be used with the same tough bottles in the three-litre size, still end-to-end, to add two litres to the overall capacity and run-duration, without the extra diameter causing disproportionate increase in air resistance. But I daresay Tom had done the maths to see if it would gain more than it would lose. Brilliant video, and as others have said, SO much better for including the failures as well as the successes.
What about adding an helium balloon just so the plane has zero weight ? You could then add a more solid/heavier air container (thus allowing a longer flight).
That's a blimp.
@@snppla not exactly... a blimp is much slower and mostly flight thanks to his weightless parts. Here I suggest just enough helium so he can add more compressed gaz with a more solid container.
Very interesting, I bet someone either has or will figure out some way to weaponize this concept it has a potential of stealth/cost-effectiveness. I enjoy watching you try to make the crazy possible. Thanks
finally, for the 1st time in history. an "Air"plane is visualized!😆
Drop the tail boom and make a longer bottle :-)
That's what I was thinking. One of my first thoughts was try for an air tank two or three times that length.
Together with electronic stabilization that plan could work like a charm.
And a "chamber" near cg for dry ice :-)
Doesn't sublimate fast enough for propulsion.
Per Buch g
You are my favorite channel I just found! Youve got a fan in me
From professional Engineer to a better Engineer, respect!
Add dry ice to it to make it last longer
That would weigh it down to much
put a turbo on it and should work flawlessly!!
Wonder if this could run off steam, or some similar chemical reaction?
Well done mate, a good fun video.Congratulations on your degree
Those "Air Hog" planes were the ultimate in air powered design and engineering. I bought one for you young Son, pumped it up, and sent it into the air, it caught a tail wind and went nearly a ¼ mile into some trees, We were never able to find it, so I bought another.
Build a battery powered compressor in the plane. Its not efficient, but it would be very funny and interesting to see!
Pute a small solar cell on the wing, and a auto cyclicer so when it reaches engough psi it just starts from the ground, lands and refuels
Good idea, but then he would need flaps too. Otherwise the Plane can´t launch from the ground