Electric Mosquito helicopter with electric tail rotor testing
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- Опубликовано: 27 авг 2024
- Some more aggressive testing of the electric tail rotor to see what the limitations are. So far it's performed exceptionally well.
One question that gets asked a lot is "How long does the battery last?"
Here is the answer:
The battery capacity is 7.8kWh.
When hovering the power required is 21kW, so the battery will last 7.8/21 hours = 22 minutes.
When flying just above ETL (about 20km/h) the power required is 17kW, so the battery will last 7.8/17 hours = 27 minutes.
Very impressive. Why isn't this on the front page of YT?
The ones that get on the front page of YT are the ones that look good, not the ones that can actually fly with a person inside ;)
@@OskarRDA Well, I was stunned how well this worked. I went in expecting you to hover it 6 inches off the ground for 10 seconds. lol You put on a nice show.
@@taofledermaus Thanks, it's a lot of fun to fly!
@@taofledermaus the real question is how long it can stay up.
@@FightBackorDie2024 That depends on how much fun you want to have in the process! Flying at the minimum power point will in theory give 27 minutes flying time, but that would be SO boring.
He certainly knows how to fly.
There's some clever electronics in the tail rotor control that makes flying much easier, so I'm cheating a little bit 😉
Fly the rainbow copter
@@OskarRDA Thats brilliant sir. Can i apply for your mentorship?
@@OskarRDA - Well, Since "Helicopters" are "Cheating at Flying" why not meet them in their own game?! 😁
@@OskarRDA
So what ? Almost every aircrafts are assisted anyway :D
After he lands I found myself saying "don't stand up" out loud....... That rotor height is a bit concerning.
Yes i think getting into the habit of not unbuckling until the rotors have stopped would be prudent .
@@rydfree Note to self: Either make the video 3 seconds shorter or 1 minute longer...
What I'm sitting on concerns me a lot more than what's happening upstairs.
The post flight procedure in this aircraft is tricky and needs to be improved somehow.
There are 2 dangers, equally lethal. One is in your face, the other one is hiding, hoping that you forget about it. You have to eliminate both. Which one do you eliminate first?
@@OskarRDA Probably the head chopper off'er
@@OskarRDA what if you add something above your head that's protecting you
I'm a helicopter engineer of 30+ years. Well done.
My choice would be go with a coaxial main rotor system. Put all your power to the main rotors and get rid of the tail rotor(s). Keep it simple.
Be safe.
Thanks, if I had a coax heli I definitely would have converted that. Unfortunately all I had was a Mosquito helicopter so had to do with second best. It flies very nicely though.
@@OskarRDA Your doing interesting things with what you have at hand. Why swap out the stock T/R system?
@@av8tor261 It's a long story, too long to tell on a RUclips comment. There will be an article in the Kiwiflyer magazine with the whole story, it's getting published this week.
I think putting 6 small electric fans on the tail is much easier than a coaxial main rotor system.
@@OskarRDA It's cool, and great flying, I just wish the anti torque wasn't so ugly..... I'll keep and eye out for that article reasoning behind it. Nice work though
This is one of the few things that deserve to be called ‘amazing’. It’s inspiring. Thank you for sharing this.
Thank you.
amazing machine. total electric. many rotors on tail is a new idea. and redundancy just in case one or two motors fail you should still have tail authority
big electric motor are expensive, i think that way it was cheaper
one downside i see is it wouldn't be controllable in a loss of power making it impossible to auto gyro back to ground
@@macman30331 Have a look at the auto video in this channel. In that video the logger shows that tail power was zero for 1 to 2 seconds before a small pilot error. In the next auto the pilot made sure there was no pilot tail input and the tail power was zero for about 5 seconds until power recovery.
@@OskarRDA oh cool! and it was the next video too lol
That is so nice. After fifty years of disliking helicopters (glider pilot), I would now like to fly one like that. Great job.
That's one of the nicest compliments yet, thank you!
I don't think you should stop disliking helicopters.
That tail rotor is straight out of Mad max. EDIT: I'm proud of you, keep it up!
Kind of cool honestly. It's like if one motor fails he's got several more. Great safety feature if you ask me.
@@OtherDalfite I think all motors are needed to control it perfectly. But yes it's a safety feature. I have a doubt,How much is the flight time?
@@jayesh5131 more motors allows for finer control as well. Good point
@@jayesh5131 The battery capacity is 7.8kWh.
When hovering the power required is 21kW, so the battery will last 7.8/21 hours = 22 minutes.
When flying just above ETL (about 20km/h) the power required is 17kW, so the battery will last 7.8/17 hours = 27 minutes.
Love it, it worked though, it seems very stable
Great job! I'm a retired AH-64 maintenance test pilot and like the fact that you have multiple tail rotors. I have two recommendations. One - have an indicator in the cockpit for each tail rotor to show whether or not they are functioning nominally. If you have a tail rotor fail, or some of them functioning below specifications, this will allow you to plan for an appropriate approach and landing. Basically if you have tail rotors that are not functioning nominally, and you do not know about it, you may loose tail rotor authority when coming into a hover or trying to maneuver. Two - if possible develop software that in case of a tail rotor strike or failure of one or more of the tail rotors the system will automatically allow the remaining tail rotors to increase output. If you rely only on pedal input to compensate for a trail rotor malfunction you may hit your pedal stop before enough tail rotor authority is regained. Keep up the good work, take your time, and be safe.
Thanks for the recommendations.
The cockpit is quite small and already crammed with information. I decided to only put two bits of tail rotor information on the screen, firstly the thrust command to the tail and secondly the actual tail power. The pilot can see when the thrust command hits the "pedal stop", which in this case is electronic and not mechanical. Also if the tail power is low at the "pedal stop" the pilot knows that there is a problem with the tail because it is not generating the thrust it should.
@@OskarRDA I believe he was referring to more of an early warning system for the tail rotors so you would know beforehand that there would be a loss of thrust before the pedal stop is hit. It could also help in case there were some sort of cascading failure to let you know to bring her down faster. Which brings another question: without a direct drive to the tail rotor how would auto-rotation work for this craft?
@@neogator26 The lack of drive is an advantage because the main rotor no longer needs to drive the tail rotor in an auto. You effectively have a gyrocopter with a big vertical stabiliser at the back, and gyrocopters are the Masters of Autos. There's an auto from about 150 feet in one of the other videos, the aircraft is very yaw stable.
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
This is just amazing !! Can hear John U's applaus from the sky...
John was an amazing guy, without him this video would not be here.
You know, despite the short operating time, I can imagine this heli being very responsive and maneuverable. Absolutely no response lag, and instant thrust. The nature of electric motors.
Thank you for your innovative and piloting skills, and for bringing us this great video. Make me exited for the future, and you are on top. No pun intended.
Thanks, it's worked out better than I had envisioned.
@@OskarRDA Bro if you don't mind, How much is the flight time?
@@jayesh5131 The battery capacity is 7.8kWh.
When hovering the power required is 21kW, so the battery will last 7.8/21 hours = 22 minutes.
When flying just above ETL (about 20km/h) the power required is 17kW, so the battery will last 7.8/17 hours = 27 minutes.
I was sort of fretting he would throw his hands up in celebration at the end.
I have seen that happen.
The results will haunt me for the rest of my days!
Why doesn't this have millions of views already?
@@desertodavid You see it working right here don't you? Isn't that enough evidence to convince you it works? Imagine what we can do with batteries and electric motors designed with tech 10 years from now.
Wowww i wasn’t expecting an air show, amazing!
it is impossible to find a more extreme hobby than this. absolutely crazy
That will get you an A plus for advanced aviation class 🙂
That's extremely impressive and it looks a lot more agile than its predecessors. At one point I was worried about a tail strike but the pilot clearly knows a thing or two about rotary craft.
He has so much redundancy in the tail i bet he can afford a light tail strike
Sarah Long Why was you worried about the tail ,would it have affected your life ?
@@tonywright8294 Cause any non-psychopath human being wouldn't want to see him wipe out bad in a homemade helicopter which could lead to death...?
@@tonywright8294 bless your simple little brain, what an incredibly stupid question.
crazy and common sense idea at the same time.. Just maybe no one has ever tried it or thought about it. no transmission, lots of a redundancy! Awesome work.
Thanks, I'm also surprised nobody has done this before. Getting rid of the mechanical transmission has huge benefits.
Well there is the Bell EDAT - that’s what I thought of when I saw the thumbnail ( amazing stuff btw @OskarRDA! I’m now going through all your vids) verticalmag.com/news/bell-electric-tail-rotor-edat-questions/
That is badass and so is the pilot nice build and awesome show. Is it a coincidence that the video is 4:20
Hats off to you. Exceptional work.
Thanks, it's worked out better than I had envisioned.
Wow! Let me know when you start selling kits. I've been wanting to do an electric UL heli since college 20 years ago.
I doubt if the average kit builder will be able to safely manage a 7.8kWh battery. Just because it's quiet doesn't make it inherently safe.
@@OskarRDA You do have a point. Although I believe with proper education in the plans, a builder could be made familiar with electrical hardware and be taught to act safely. I'm an electrical engineer, have built two electric cars, and teach solar home installations. People have been converting gas cars to electric for over 25 years. Now people are doing it with 25 kWh lithium packs. It's true that your average gear head who has only ever worked on gas engines would need some education to make the transition, but isn't that what kits and plans are for? Gasoline is inherently unsafe also, but people are so used to it now that they don't think twice about it. I think what you are really trying to say is that coming up with a kit with plans would be a lot of hard work to make it safe and idiot proof, and you are very correct. But someone has to do it if electric aircraft are ever going to "get off the ground". :). Happy flying!
@@silentelectrics You're 100% correct. For someone with an electrical engineering background it will be fine, for others it will be hard work.
@@OskarRDA - Obviously, you two seem to be discussing the "Build", part!
This kind of Heli Flying control, I have not been, since the Year I saw the "Pre-Shell Naked Mini 500" demoing Cones Knocked over, then Flipped Up, then Stacked, then Un-stacked, with the Skids, down at the Ultralight Airport, at "Oshkosh!"
Even having a Pilot's Licence, did not fully prepare me, for Building a Partly Finished (& Secretly Damaged) Kitplane!
@@OskarRDA Whats your flight time?
Thank you for sharing the beauty. Congratulations to you
Great effort Oscar, good to see in the air !!!
Cool just rotor noise makes it better for me to hear it
imagine if they'd put clickbait music on the video
@@yanerik6850 music is not clickbait. By the time the music starts, the baiting is over.
That looks like it’s straight out of Rust
Probably where rust got the idea... this things been around for a while (mosquito)
Impressive build and pilot skills
Thanks.
Holy crap this is awesome. Helicopters are quite complex machines to make that stable and this looks very stable.
So few batteries.. This thing reminds me of the dear departed LarryCanFly
this is incredible.. id imagine the collective has a snappy response. whats the KW on the main rotor ?? my guess would be 80kw , but could be as low as 45?
21kW in the hover, 17 above ETL.
@@OskarRDA very efficient , im guesing the machine weighs very little.. nice work
@@airgunningyup ???? Of course it's light weight. Some of the Q on YT, I tell ya. !!lol
@@zenovich1 he wasn't asking a question he was supposing that based on the power requirements alone it must be pretty lightweight
what are the specs of the main motor?
Great flying. You obviously have been around the block when it comes to handling a heli. I fly large RC scale helis. They are challenging, and as you mentioned, those assassins are always waiting, which why I keep mine out in my shop and away from my house.
Now imagine if the batteries wouldn't be an issue. This is so cool what's possible already.
Yes, the batteries are the biggest pain.
@@OskarRDA I suppose once it's fully developed the engine would generate power for the motors. How about a small rudder aft of the motors to add yaw at speed and save energy? Could you also go with dual variable-pitch counter-rotating props? (or is fixed-pitch and rapid reversal better?)
I watched the older videos and there your Heli had a single-tail-rotor, now you changed to a multi-rotor-tail: why? What was the reason for doing so?
I'm not sure, but the single rotor tail looks like a torque tube connection to the main electric motor. Switching to direct drive motors would be much simpler mechanically speaking. As to why small multirotor configuration, maybe redundancy, also you can vary the speed quicker with smaller rotors. This is just speculation, interested to know more
It's a long story, too long for a RUclips comment. There's an article being published in the Kiwiflyer magazine this week that has the whole story, will see if I can put a copy on the web.
REDUNDANT SAFETY!!! _ You Loose Your 'Single' Tail Rotor?! _ and You Loose The 'Spin Control' Hat Trick! Quick Way To Get Unsubscribed From Life! _ And Via the Continued Limited Engineering' In That Region' Dispite This Well Known Fact?! _ Far To Many Already Have! 'Electric Back Up' At Least By Now? Imo! 😶
RC scale helis benefit from INDPENDANT RELIABILITY OF direct drive, less likely to suffer LTE (Loss of Tailrotor Effectiveness) as main rotor wake turbulence/quartering or tailwinds/blade stall can all induce..
Many blades making a larger "wall"of air be effected seems excellent for redundancy and effect..
Far better chances if one of seven tailrotors damaged by ground strike
Will that tail rotor system work in the event you have to auto-rotate?
Not enough redundancy for me! Beautiful bird flown by a great pilot though! 👍🏻
auto ro ta toin, bruh. Aye u to roo tatoin.
@@dogdipstick Autorotation didn't seem to save Kobe Bryant
@@gormauslander ......... legendary French aviator Jean Boulet, piloting an Aérospatiale SA 315 Lama, set the world record for the highest altitude flight in a helicopter at 12,442 m (40,820 ft).
His engine quit at 12,443m. Landed good and fine.
Kobe obviously did not know how to fly a helicopter. Not a very good heli pilot. Kobe should have taken more lessons i flight.
@@dogdipstick saying his engine went out at 12km is as impressive as a man who lands a glider dropped from the same height. It's not impressive. He had plenty of time to respond and steer. You can't say the same of a helicopter that disassembles itself at 10 meters
I suggest using the multiple electric fans for the tail and a gasoline engine for the main rotor.
Using an electric tail eliminates the complex transmission linkages and pitch control, and a combustion engine for the main rotor extends the range.
When you look at hybrid options there are some very elegant solutions. My prediction is that in 10 years time you will see a lot of hybrid helicopters with battery powered tail rotors and battery assisted main rotors.
Battery to weight ratio is why its not comercially realiatic tho but when battery tech improves its the future
You’re crazy but that’s why it’s so cool = 😍
Have to agree on both points there ;)
That’s crazy I’ll take one
Wallmart $899.00 and a hundred for assembly and you can fly it home.
THAT WAS FANTASTIC!!! Very responsive! You just changed things! Tail design is awesome 👌!
The tail is much nicer to fly than a conventional mechanical tail.
the new Rust graphics looks great
Oh man this is the future. I've never had a thing for rotorcraft until right now.
But just as ungodly noisy as a gas-powered one.
This channel has more than one video so I think he knows what he’s doing.
I came for the hover but stayed for the show. Nice job.
Thanks, I'm glad I could provide a bit of entertainment.
About as bare bones as it gets. Very nice. Well done.
The most skillful flying of a hair-dryer yet filmed! I bet it feels more scary at 500 feet up. Wonder how soon someone will invent Flight Recharging ? A paid service as part of a "get you home scheme"!
The world really does have some very smart people. I really enjoyed this video. That is a very cool ride and you are clearly a very skilled pilot. I wish you all of the best. Happy landings!
Thanks for the kind words. Comments like that make the journey all the more worth it.
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
Very skilled piloting
Thanks.
Fantastic. I think I've just seen the future of electric Helos :)
Thanks, agree 100% with you.
Very nice aircraft and top notch flying skills.
Thanks, it might look a bit agricultural but it flies beautifully!
An interesting rework of the Air model helicopter!
A useful and relatively economic test bed.
I like the idea of multiple Tail Rotors. Especially if they all have their own independent power supply.
Congratulations....Man you must have balls of steel flying that... i get nervous when i fly my Trex 550 and that's a remote controlled heli...LOL
Very skilled pilot. Very impressive.
Wow thats impressive the fact its electric! And the pilot skills are wery awesome woah!
Excellent design. So much easier to start up with a motor than an engine.
Thanks, definitely don't want to go back to gas after having experienced this.
That is crazy. Electric simplifies so many things. Now we just need more power-dense batteries.
Don’t undo the seat belt till the rotor is stopped! Please ! All it takes is a moment of excitement to make u forget. Lost a friend when the rotor from the mosquito he was flying struck him. Very nice.
.....there always has to be a Captain Safety.
@@aikimechanic if it saves a life. So be it. Lost a friend with thousands of heli hours. Just don’t want it to happen to someone else.
@@alant4218 Yeah, you're right. My apologies.
The post flight procedure in this aircraft is tricky.
There are 2 dangers, equally lethal. One is in your face, the other one is hiding, hoping that you forget about it. You have to eliminate both. Which one do you eliminate first?
This looks shaky.... That is stable, this is great stuff!
Looks like you have the build and probably the weight of a world class long distance runner. I'm sure that helps a lot with the performance and ability of this fascinating Heli. Looks like you have a lot of experience on Heli's too. Well done.
Ill bet that tail rotor is an innovation
It’d be interesting to see how it differs from the Bell EDAT.
@@ZacYates It's probably a million dollars' less expensive.
@@codetech5598 XD
Very good work! It looks very stable and precise.
Wow! I have no words to describe this awesome achievement!
I dig the redundancy in the tail..
Wonderful ! ingenuity at its finest. It would be nice if the camera man show us a closeup of the multirotors tail end.
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
@@OskarRDA Thank you for the link ! beautiful work of art, congrats guys.
Fantastic! Absolutely amazing E-performance!!!
The future is here, great job. Perfect for checking around the farm quick.
This is a marvelous machine ! Congratulations! 🎉
Thank you, it's really nice to fly as well.
excellent job. I bet it gets way more flight time than those manned multicopters
Thanks. The power requirement are roughly the same but this aircraft can keep on flying and land if one or evan all motors fail.
Very beautiful! It works perfectly!
It would be nice to see your video showing the electronic and mechanical details of your beautiful helicopter :-)
Thanks, you can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
Man, I do not know who you are, but this is inspiring!
Wow 😯
Thanks for details in the description video
Great ingenuity ! I love your work !
100k views in a few days...
this video will go viral.
p.s.: Beautiful work!
Question: Is that place near Sanoma?
Now that the engine isn't blocking the sound of those propellers spinning it sounds very scary
That looks so much fun, keep up the great work guys
I need this to fly to and from work. No freeway :) Great work !
Every part of this is truly amazing. Just wow!
Looks like it passed the test. Nice work.
Thanks, only test left is full autorotation to the ground.
4 minutes and 20 seconds long... you're going places kid
He's not a kid
Impressive battery life!
I only fly RC helis, but I'd feel more comfortable to weathervane the tail just incase tail rotor(s) power was lost so an auto could be done or a landing with speed.
I do love me a good Trex. Varooooom!
Nice and silent. Great work!
To me this looks like a must have
This is what people see when you're flying a chopper in rust
Very, very, very awesome. I agree with former posters to this site, as far as, why isn't this being reported as bigger news?
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
I'm guessing the multiple drone props is because a single electric prop of sufficient size would be too heavy? Definitely seems to have more than enough anti-torque authority. Good work here.
Thanks, that was just the easiest way to build it.
Hey Oskar! Letting you know this video is blowing up with respect to the rest of the stack on your channel. You are doing an impressive job right there! I saw you writing that you don't have Insta of FB, or any other repository for pictures of this thing. I would love if you could make ANY source available and be there to post some close shots of the work, It would mean a lot of value to me and others. Appreciate the effort and Yes, the machine right there is 'silent' for a helicopter and I like it. Love from India man!
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
@petersripol needs to give this a go
Congratulations !
Excellent film footage and sound.
Wow!! That's one gorgeous machine!!!
Ok!!! Elon Musk must be envy of this guy. Hat of for design and as a pilot. This is the route to the future. Excelente work.
Absolutely amazing. Just a little scary to me that you could reach your arm up and cut your hand off.
Even more scary is what's below the seat, just doesn't look scary.
You’re a good pilot! I hope your channel has a close-up on that pitch/yaw mechanism.
Thanks, you can read up about it at www.hfpower.co.nz/Oskacopter.pdf
Beautiful modern screw plane!
Thats cool! A buddy of mine built a mosquito like that. I would like to see more details on the tail rotor you built! Nice job!
The tail rotor is basically a drone mounted on its side.
You can read the whole story now at www.hfpower.co.nz/Oskacopter.pdf
*Is happy and wants to stand up happily while waving at his friends*
*He forgot to turn off the rotor*
Great skills and an amazing little machine. Well done. 👍👍
Thanks, it's been an amazingly rewarding project.
Are you a Heli pilot?
Or did you stay at a Holiday inn Express? 😂😂😂
I'm still at awe 😳😳😳
In New Zealand you need to be a current heli pilot to fly that thing.
@@OskarRDA Didn't realize you were in New Zealand, you probably didn't get the reference to an American TV commercial for Holiday Inn Express.🤭🤭🤭
ruclips.net/video/pA-oyrO9Lpk/видео.html
This is what it was like during powered flights first renaissance. It was a common idea that everything we needed for powered flight was around us if someone could figure out the recipe. Today we know that our cars (safe personal flying transportation) should fly . The technology exists. We just need someone to figure out the recipe.