sometimes the simplest things can make the biggest problems go away. the use of hose for the landing is friggin brilliant . it absorbs impact etc etc etc, wow cant wait to see this gnarly bitchin chopper fly.
This is awesome experimental build. At some scale it might make sense to pursue the most weight efficient gas generator/charger. Would take some custom charger tech to do right, I think. You could then simply use a 'traditional' quad tech/structure elsewhere, and it's accompanying simplicity advantages. Plus you'd have a short battery flight reserve. If you could get the gen/charger, gas, and small battery to weigh no more than regular batteries, you might get some real energy density gains. Or this idea may already have been found to not be that much help. The concept I present is of course not new. If it does help we there may even be some examples of such already built, idk.
It is an amazing machine guys. Is it your aim to use cyclic and collective pitch to roll and pitch? In that case how will you manage yaw? Are the two engines paired with two rotors in order to change rpm in both? Sorry for so many questions, I got shocked when seeing your work :)?
You may want to add parachutes and program it into one of the channels on the transmitter. Just in case it stops abruptly in the air. Nice engineering though. I'm inpressed with the effort.
Looks like zenoah 80cc twin cylinder motors. As a kid I used to be onto gopeds and stuff like that . You may want to look int polini 50cc engines if tuned right with pipe they make around 18hp but the weight you will save would be a big plus . Good luck
The aluminum tubes, If I were you, I would mount them on mill with a 4th axis, and drill a spiralling hole pattern all over them to drop as much weight as possible.
Hi, Great project you're working on. Just a guess but if your rotors span 30", the maximum amount of static thrust will be gained at a pitch of 18" (30x18). This is because the max amount of static thrust is achieved at the diameter multiplied by 0.6. That said, with a rotor speed at a nominal speed of of 5600rpm, your rotor tips speed will be at a safe 500mph (well below Mach I, 767mph ASL), you will achieve 137lbs per rotor head for a total of 548lbs at maximum. Subtract the weight of the airframe with fuel, and that will be your max payload. I can hardly wait to see what you achieve. All the best!
Hey Ron, I like your leads and ideas. However, can you please explain how did you get 137lbs per rotor head? Don't you not have to know the (horsepower) power? Also, did you use diameter of 30" to calculate the wing tip speed... if so, why that and not the diameter of 18" which is the diameter of the propeller? Thanks a lot!
YEAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH : WATTA MACHINE !!!!!!!!!!!!!!!!!! AWESOME,EPIC,INCREDIBLE. THATS KINDA HANDSCRAFTED WELL DONE !!!! GO ON !!!!!
Good evening, I'm putting a drone also gas , however 'm doubts on electronic ignition. How they used to control two motors shown in the video ? I am using 2 chain saw engines and need to connect the two engines on the cdi with the starter to connect the two at the same time ? Thank you
Very cool project, BUT, first of all - how are you gonna control every and single one of the propellers? Second: Those engines have a buffering time for responding to your commands, and that is not "so" bad, but the same is for the Flight Controllers commands, and unfortunately it stays unstable in air. My opinion: you need one of the 8 KW 3-phase motor to bind it to your engine as a el.generator, and with 4 el. motors on every drone arm you could provide lift and control the drone.
@@CSparzo Yeah, it could be with the pitch control, but they haven`t made it yet. Maybe they would in the future. I have a feeling that with those two engines working unstable (with changing rotating speeds - what could be heard from the audio) this drone /if it flies/ will jump around in the air. They need a stable thork. But I would like to stay as an optimist, because I like what they have acchived. And btw, except flying videos, that could be almost all what I could expect from this drone, because I wouldn`t like it in my neighborhood, it is so crepe laud, can U imagine flying above your house a couple times a day.... But I will repeat - this is very nice project, BRAVO for such a engineering.
We don't need to control the speed of every rotor because we change the pitch of the blades instead. This allows the quod to use its inertia to steady the rotor speeds while going through higher loading situations while the blade go into a steeper pitch and the engines catch up to stabilize the rpms. It also allows much more responsive control than we would have otherwise. The generator idea is a good one, but it is borderline of wether it would provide any beneficial weight savings. It would certainly be mechanically less complex, but perhaps at the expense of more mass due to a significan't amount of copper you add in the form of electric motors.
@@Incrediblehlq Well, I hope you are right, I will stay as an optimist. From my experience - pitch control isn`t cheap solution :-/ especially for the little rotors in a WINDY day - when stability, trim compensation (our of atti-mod), moving progression (in desired direction) and the wind are vectored :( . I wish you luck, you are gonna need it. I suppose that the other engine is for the redundancy? or I am wrong? I am hardly waiting for the next video :)
@@darkodimitrijevic8496 Both engines provide power at the same time to a single shaft through one way bearings. If on engine is faster than the other, it cannot hold that rom, and so slows down until the other engine is at the same speed and then power is balanced between the two. In the testing we have done, it seems to work decently well, but we have only done a somewhat flawed tethered flight test so far. There is some talk among the team memebers to perhaps start up some work on it again this summer, but with current world conditions, this may not be possible until a later time.
nice work. Do it have clutch between the engines and the main center shaft? For safety reason, i think it should have. Same thing like turbine, gasser or nitro helicopter. Then add some safety brake use when starting the engine.
First of all, Great Job !!! It looks awesome My only concern would be Yaw control . On electric models the Yaw is controlled by the speed differential of counter rotating motors? I Can see how you can control Pitch and Roll by manipulating the pitch on the blades but since all of the booms will be spinning at a constant rpm of each other, Yaw might not be possible. Curious to see how it flies. A tricopter of even Pentacopter design might be worth considering if yaw is not available.
Franco Giambona As the pitch of the blade increases, then lift increases, but drag also increases creating an equal but opposite torque on the platform. So but increasing pitch in the blades spinning one direction and decreasing in the other, you can get an imbalance in torques and therefore a yaw movement without changing the overall lift.
+Incredible HLQ Still makes no sense to me. As the pitch of which among all the blades increases? Also, where exactly are you referring to where you say drag increases? "Increasing pitch in the blades spinning in one direction" aren't they all spinning in the same direction? Also explain that "inbalance" of torques. Thanks
+masso172 2 rotors are going clockwise and 2 anti clockwise, just like an electrical quadcopter. By increasing the pitch on 2 rotors and decreasing on 2 others you will be able to 'yaw'. Just think of a helicopter, when they are on the ground with 0 pitch, the tail rotor has very little work to do, but when the pilot changes the pitch of the blades (take off) the tail rotor will have to work a lot harder to keep the heli from yawing.
*I think some ONE WAY BEARINGS would really spice this thing up!!!* I bet it's crazy difficult trying to get it so the motors work together, and aren't tugging on one another. *Some kind of clutch system might make warm up easier.*
If you watch the beginning again you will see each engine has its own pulley but each drives the blades , not sure if I explained that correctly or not.
Green Silver We are hoping to get a half hour run time per gallon of fuel, but this number is based on fuel consumption specs from the engine manufacturer. We have no idea the condition under which they got their numbers, so really don;t know with any certainty what kind of flight time we will get. As we do some ground testing, we will likely get a much better idea.
Jay Savage Yeah! That makes sense now! Thanks for that! Wow, completely new code must be written for the flight controller. That must be some complex staff since there are two engines (each with slightly different rpms than the other)
BIll Georgoulakis Both the engines are connected to the same shaft via belts, so the RPMs will be matched. The flight controller will connected to servos to control the blade pitch rather than controlling the quad via prop speed.
Incredible HLQ Epic work gentleman, I bet the getting the timing right was fun :P. I wonder if using a timing gun and some math would balance this puppy. (EDIT: Oops, sorry saw the timing gun LMAO, carry on I'll shut up now.) *I think some ONE WAY BEARINGS would really spice this thing up!!!*
how will you calculate the thrust,how will you know if the engine is capable of lifting the weight.is there any formula or some thing.and how will it pitch forward without variable speed.
Hi Rich. We expect the rotors/blades to reach just under 3000 rpm at maximum throttle. We have a 3 to 1 step down from the engine which means engines will spin at a max of just under 9000 rpm. We are using the Align 435mm blades which puts them in the 500 class I believe.
Are the engines staying cool? Looks like they will be prone to overheating unless you direct a fan at them especially in a hover. You are breaking a lot of ground at one time with this project. Bet it is a big challenge. And expensive it if flops over on its back like my Quads always do on the first flight. I hope you can make it work. I would like to see it fly.
How do you control the speed of the motors?? I mean, with electric brushless motors you use esc and connect it to the flight controller, how do you connect this to flight controller??
Thanks for pointing out the Stingray to us. It had not hit our radar. To be fair, we haven't really researched what exists out their since we finished designing this project. Unfortunately, their controller does not (yet..) appear provide all the functionality we need such as GPS way-point navigation, mission planning, and still camera triggering, to name a few. We are looking to find a training quad to use when teaching users how to fly HLQ. This may be a good candidate!
Incredible HLQ They are working on all that stuff for it. Give them time(father and son team) and you will be able to plug it in and fly it with gps return to home. Have you looked at the 3Drobotics stuff yet? It will take some programing but it will run your quad now. If it was me I would get a stingray and setup the 3dr FC to fly it work out the bugs with it then transfer everything over to big bertha. In the mean time start with something like the flitetest electrohub kit, cheap and it can be setup for fpv. I have one with return to home and waypoints on it great little quad fast maneuverable and cheap to fix.
Incredible HLQ HobbyKing also do a variable pitch quad now - so, possibly that could also be used as FC test bed There are plenty of fixed-pitch quads around that can use the APM to give you experience of flying quads & controlling the APM & Mission Planner software - anyway, APM/Mission planner is definitely the way to go with this.. Any idea when you're actually going to maiden this?
The blades are counter rotating. As the pitch is increased on one set (and lowered on the other) the drag of the combined system changes to favor a yaw rotation in one direction or the other.
Jacob Bond We are using the Ardupilot APM2.5+ controller. But we have an additional arduino to handle the engine control and a raspberry pi on board as well for image capture and possible future computer vision implementations now that the new Pi 2 has been released and has some more computing power.
Good morning, 4 days ago I made a request and the amount you buy gave me free fast shipping, which is done in 3-4 days, but now I check the status of my order just shows me that day 16 / 06/2015 you will be sending, need to know why this taking so long time shipping, if you request products told me they processed within 24 hours. I look forward to a prompt response. Thank you.
very nice!! cp control i take it.i see your very good at building things i take my hat of to you.now then i do not have the means to play like this so if you have the time means and inclanation to. what about using those engines to drive through gears to brushless ? brushed motors as genarator's then to capasitors to esc's to brushless motors with fixed props and run a flight controller dont know if this would work but if so then scale it up and ill ride it LOL!!!!!!!!!!!.
USE EDF electric motors AND buy a Tesla Power Wall battery. In fact, Buy 5 batteries and used approx 170 EDF electric motors mounted in formation with necessary space in-between. 170 should give you 100 Kg of extra lift, i.e. rideable. //Erik S
erkanen But the TPWB's weigh 100kg, and finding the right point to mount it will also be an issue, as if too high, it'll create topple and if too low, it'll create a huge pendulus period. That will also fight the pitch and roll inputs from the airscrews.
yes....great job..but .my bet is gonna be a quad (hexa,octa) copter which electric motors are gonna be fed by a gas turbine-electric generator on board...
Ỳou need a lot of C4 to have a blast that could actually destroy something, a quad is less likely to be able to carry that than a fixed wing, WHICH HAVE BEEN AROUND FOR 80 YEARS!
Incredible HLQ Neat, and I imagine the engines output pulleys are on sprag bearing. I have two rc heli glow motors waiting for the release of the pitch control software. :-)
They will definitely need something like a sprag clutch to decouple the output shafts from power train upon a one or two engine failure. It doesn't appear it has that in this test as the blade hubs stop immediately with the engines. Even R/C Helis can auto rotate to the ground if the engine dies.
There are one way bearings installed in the large pulleys at the top on the input shaft. The blades still spin down rather quickly because the belts are tight and produce a good amount of friction. We have talked about putting one way bearings in the rotor shafts instead on a future version, but we think this should work for prototyping.
Incredible HLQ I did notice that in your later test videos. I think this might have even more potential scaled up by a factor of 4 or 5 and a pilots seat added. :)
Is the APM Quad copter system capable of running a system like this? I have a similar idea I just want to use Trex 450 Torque tube tail assemblies. Machined down of course. I think that while belts are more power effecient, they introduce more drag. I've watched Curtis fly his. It's a slick rig. Just don't care for belts.
Green_mt Have a look at the Stingray 500. Developed by Curtis Youngblood. It is an electric 3D multirotor using a single motor and a belt/shaft system and variable pitch props. They have developed a control system to take care of the stability. Hobbyking also do a version if it! th-cam.com/video/TnGhEInTXYc/w-d-xo.html
Green_mt look up stingray 500 quadcopter you will see a single motor quad running 4 variable pitch props using belt and its a 3d capable racing quadcopter
Blake Lang Green_mt Well, as much as I hate to promote a knock-off, HK has just come out with a vari-pitch quad of their own. And while so many people are sure its belt driven, I postulated, and I think it will be confirmed by rcmodelreviews, that is has shaft driven props.
You're losing a lot of lift with those fat spars being in the way. At least a third of your airscrew lift/flow is pushed into the spars, creating eddies and vortices.
this is whats improving the low lift strength and low flight time of drones. really brilliant
I have to see this fly! Subscribed! Throw some props on this thing and lets go!
I cant wait to see you guys pull this off!!!
Great video & thumbs up. Cheers from sunny Sint Maarten
Wright brothers of QUAD. . . Humanity Thanks You!
I was looking for this video finally I got it through you, great work. Sir can you please upload the video complete construction of the drone
I found this on reddit and this is amazing I cant wait to see were the channle goes good luck.
Get the bugs out one step at a time.Trial and error. Keep it up you will get there.
sometimes the simplest things can make the biggest problems go away. the use of hose for the landing is friggin brilliant . it absorbs impact etc etc etc, wow cant wait to see this gnarly bitchin chopper fly.
What a cool project!
This is awesome experimental build.
At some scale it might make sense to pursue the most weight efficient gas generator/charger. Would take some custom charger tech to do right, I think.
You could then simply use a 'traditional' quad tech/structure elsewhere, and it's accompanying simplicity advantages. Plus you'd have a short battery flight reserve.
If you could get the gen/charger, gas, and small battery to weigh no more than regular batteries, you might get some real energy density gains. Or this idea may already have been found to not be that much help. The concept I present is of course not new. If it does help we there may even be some examples of such already built, idk.
Good idea, some times long range is important, mainly for military uses.
COOL! Looks like the VZ-7 will fly again!
It is an amazing machine guys. Is it your aim to use cyclic and collective pitch to roll and pitch? In that case how will you manage yaw? Are the two engines paired with two rotors in order to change rpm in both? Sorry for so many questions, I got shocked when seeing your work :)?
How do you manage yaw control? Is that why you have the two engines? one engine per two props?
You may want to add parachutes and program it into one of the channels on the transmitter. Just in case it stops abruptly in the air. Nice engineering though. I'm inpressed with the effort.
Looks like zenoah 80cc twin cylinder motors.
As a kid I used to be onto gopeds and stuff like that . You may want to look int polini 50cc engines if tuned right with pipe they make around 18hp but the weight you will save would be a big plus . Good luck
The aluminum tubes, If I were you, I would mount them on mill with a 4th axis, and drill a spiralling hole pattern all over them to drop as much weight as possible.
+Brady Rose - carbon fiber?
well, those would be some pretty large diameter carbon fiber tubes, with pretty thick walls. I can see that getting real expensive in a hurry.
Brady Rose
wowforreeel
I would not do that. I would make them thinner.
How did u make each engine separately turns the propellers? Can u let me know please?
Best of luck!
Very cool, i hope you go well with your hardwork :)
GoodLuck ! and nice build
Hi, Great project you're working on. Just a guess but if your rotors span 30", the maximum amount of static thrust will be gained at a pitch of 18" (30x18). This is because the max amount of static thrust is achieved at the diameter multiplied by 0.6. That said, with a rotor speed at a nominal speed of of 5600rpm, your rotor tips speed will be at a safe 500mph (well below Mach I, 767mph ASL), you will achieve 137lbs per rotor head for a total of 548lbs at maximum. Subtract the weight of the airframe with fuel, and that will be your max payload. I can hardly wait to see what you achieve. All the best!
+RonALampman so what your saying is, it'll be able to lift a person? haha
+RonALampman - Huh haha. I truly enjoy youtube for the knowledge gained. Thanks for that knowledge.
Hey Ron, I like your leads and ideas. However, can you please explain how did you get 137lbs per rotor head? Don't you not have to know the (horsepower) power? Also, did you use diameter of 30" to calculate the wing tip speed... if so, why that and not the diameter of 18" which is the diameter of the propeller? Thanks a lot!
It is amazing! Which type of engine are you using? What about payload?
YEAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH :
WATTA
MACHINE !!!!!!!!!!!!!!!!!!
AWESOME,EPIC,INCREDIBLE.
THATS KINDA HANDSCRAFTED WELL DONE !!!!
GO ON !!!!!
Really cool. Hate to have that fall out of the sky xD. You should get/make an emergency chute for if lets say a prop failed or something.
i still wacth this and waiting for final 2020
thats so amazing... i dont see much vibrations, thats GREAT! anywhere I can see the construction log?
Good evening, I'm putting a drone also gas , however 'm doubts on electronic ignition. How they used to control two motors shown in the video ? I am using 2 chain saw engines and need to connect the two engines on the cdi with the starter to connect the two at the same time ? Thank you
and where is the test flight? this thing flyes?
That is better. I think the control will be complex at first. Maybe that will be easier with a single propeller. Keep that up.
Very cool project, BUT, first of all - how are you gonna control every and single one of the propellers? Second: Those engines have a buffering time for responding to your commands, and that is not "so" bad, but the same is for the Flight Controllers commands, and unfortunately it stays unstable in air. My opinion: you need one of the 8 KW 3-phase motor to bind it to your engine as a el.generator, and with 4 el. motors on every drone arm you could provide lift and control the drone.
It looks like they have a means of controlling the pitch of each propellor individually which would answer your question.
@@CSparzo Yeah, it could be with the pitch control, but they haven`t made it yet. Maybe they would in the future. I have a feeling that with those two engines working unstable (with changing rotating speeds - what could be heard from the audio) this drone /if it flies/ will jump around in the air. They need a stable thork. But I would like to stay as an optimist, because I like what they have acchived. And btw, except flying videos, that could be almost all what I could expect from this drone, because I wouldn`t like it in my neighborhood, it is so crepe laud, can U imagine flying above your house a couple times a day.... But I will repeat - this is very nice project, BRAVO for such a engineering.
We don't need to control the speed of every rotor because we change the pitch of the blades instead. This allows the quod to use its inertia to steady the rotor speeds while going through higher loading situations while the blade go into a steeper pitch and the engines catch up to stabilize the rpms. It also allows much more responsive control than we would have otherwise. The generator idea is a good one, but it is borderline of wether it would provide any beneficial weight savings. It would certainly be mechanically less complex, but perhaps at the expense of more mass due to a significan't amount of copper you add in the form of electric motors.
@@Incrediblehlq Well, I hope you are right, I will stay as an optimist. From my experience - pitch control isn`t cheap solution :-/ especially for the little rotors in a WINDY day - when stability, trim compensation (our of atti-mod), moving progression (in desired direction) and the wind are vectored :( . I wish you luck, you are gonna need it. I suppose that the other engine is for the redundancy? or I am wrong? I am hardly waiting for the next video :)
@@darkodimitrijevic8496 Both engines provide power at the same time to a single shaft through one way bearings. If on engine is faster than the other, it cannot hold that rom, and so slows down until the other engine is at the same speed and then power is balanced between the two. In the testing we have done, it seems to work decently well, but we have only done a somewhat flawed tethered flight test so far. There is some talk among the team memebers to perhaps start up some work on it again this summer, but with current world conditions, this may not be possible until a later time.
damn! that is tight! nice engineering
nice work. Do it have clutch between the engines and the main center shaft? For safety reason, i think it should have. Same thing like turbine, gasser or nitro helicopter. Then add some safety brake use when starting the engine.
First of all, Great Job !!! It looks awesome My only concern would be Yaw control . On electric models the Yaw is controlled by the speed differential of counter rotating motors? I Can see how you can control Pitch and Roll by manipulating the pitch on the blades but since all of the booms will be spinning at a constant rpm of each other, Yaw might not be possible. Curious to see how it flies. A tricopter of even Pentacopter design might be worth considering if yaw is not available.
easy to solve the yaw problem1. the pitch create torq
2. it is possible to give the props a small angle so it use the thrust to give some torq
Franco Giambona As the pitch of the blade increases, then lift increases, but drag also increases creating an equal but opposite torque on the platform. So but increasing pitch in the blades spinning one direction and decreasing in the other, you can get an imbalance in torques and therefore a yaw movement without changing the overall lift.
Incredible HLQ You can even add "yaw" motors to further improve yaw control, similar to that of an actual helicopter.
+Incredible HLQ Still makes no sense to me. As the pitch of which among all the blades increases? Also, where exactly are you referring to where you say drag increases? "Increasing pitch in the blades spinning in one direction" aren't they all spinning in the same direction? Also explain that "inbalance" of torques. Thanks
+masso172
2 rotors are going clockwise and 2 anti clockwise, just like an electrical quadcopter. By increasing the pitch on 2 rotors and decreasing on 2 others you will be able to 'yaw'.
Just think of a helicopter, when they are on the ground with 0 pitch, the tail rotor has very little work to do, but when the pilot changes the pitch of the blades (take off) the tail rotor will have to work a lot harder to keep the heli from yawing.
Good Video
This is like something from Boston Dynamics!
*I think some ONE WAY BEARINGS would really spice this thing up!!!*
I bet it's crazy difficult trying to get it so the motors work together, and aren't tugging on one another. *Some kind of clutch system might make warm up easier.*
If you watch the beginning again you will see each engine has its own pulley but each drives the blades , not sure if I explained that correctly or not.
What kind of flight times do you hope to get when its finished and tuned?
It looks a very promising project.
Green Silver We are hoping to get a half hour run time per gallon of fuel, but this number is based on fuel consumption specs from the engine manufacturer. We have no idea the condition under which they got their numbers, so really don;t know with any certainty what kind of flight time we will get. As we do some ground testing, we will likely get a much better idea.
Anyone who doubts that a multirotor can fly with a constant rotor speed should look up the Curtis Youngblood stingray.
wooow nice work.. i like that. i hope to se som tecnical information of that..
WOW + WTF!!!! How do you manage to accurately control prop rpms on this thing?!?! How do you plan on stearing it?
The rotors are variable pitch
Jay Savage
Yeah! That makes sense now! Thanks for that! Wow, completely new code must be written for the flight controller. That must be some complex staff since there are two engines (each with slightly different rpms than the other)
BIll Georgoulakis Both the engines are connected to the same shaft via belts, so the RPMs will be matched. The flight controller will connected to servos to control the blade pitch rather than controlling the quad via prop speed.
it look so cool.
Incredible HLQ Epic work gentleman, I bet the getting the timing right was fun :P. I wonder if using a timing gun and some math would balance this puppy.
(EDIT: Oops, sorry saw the timing gun LMAO, carry on I'll shut up now.)
*I think some ONE WAY BEARINGS would really spice this thing up!!!*
Amazing can't wait to see it in the air. You going 3d with this monster?
how will you calculate the thrust,how will you know if the engine is capable of lifting the weight.is there any formula or some thing.and how will it pitch forward without variable speed.
Omg this looks like it's ready to bomb the heck out of my house. Jk great build dude. I'm still building my first one and your quad looks fantastic!
Nice design. Do you control the individual speed of the rotors by clutches? Or like an auto transmission gear train?
Theres servos to control the blade pitch.
Ok thanks.
Good work, looks very tidy. What Rpm do you expect and prop size.
Hi Rich. We expect the rotors/blades to reach just under 3000 rpm at maximum throttle. We have a 3 to 1 step down from the engine which means engines will spin at a max of just under 9000 rpm. We are using the Align 435mm blades which puts them in the 500 class I believe.
c'est pour quant les test en vol , en tout ça magnifique projet j’adore
Hi. do you got some video where the drone is flying ?
So are you doing any progress on this awesome project?
Are the engines staying cool? Looks like they will be prone to overheating unless you direct a fan at them especially in a hover.
You are breaking a lot of ground at one time with this project. Bet it is a big challenge. And expensive it if flops over on its back like my Quads always do on the first flight.
I hope you can make it work. I would like to see it fly.
How do you control the speed of the motors?? I mean, with electric brushless motors you use esc and connect it to the flight controller, how do you connect this to flight controller??
very interesting, how did you build it?
totally awesome
Am I seeing this right? The exhaust is less than 2 inches from the intake? Who's idea was that?
+John Street Does NOT inspire confidence. Certainly not in the overall design. Yet, I see no reason it had to be that way.
+John Street God.He did it with women. :-}
+John Street Its got me irritated as well.
Maybe that's why there still isn't a test flight video.
It’s called recycling
فكره. حلوه. لكن. شلون اتحكم بتجاهات المراوح لتنقل والمراوغه ??
Why not dual engines / generators and 4 electric motors . Would solve a few problems i think .
fucking awesome!!! Have you considered carbon fiber in place of the aluminun to cut weight? Just curious
Will you be able to get yaw control when you can not individually adjust the prop/rotor speeds? Will yaw control work with just pitch control?
Wankel Motor just reduce pitch on two opposing blades,same as an electric quad would reduce power to two electric motors to yaw.
Why wouldn't it?
Awesome!
ooh man I love it
Can somebody please tell me the best sized motor for a 1045 prop, thanks.
A very expensive quadcopter and a $30 transmitter...
Brilliant
Are you guys using the flight controller from the sting ray in this? Your heli works on the same ideas as that one.
Thanks for pointing out the Stingray to us. It had not hit our radar. To be fair, we haven't really researched what exists out their since we finished designing this project. Unfortunately, their controller does not (yet..) appear provide all the functionality we need such as GPS way-point navigation, mission planning, and still camera triggering, to name a few. We are looking to find a training quad to use when teaching users how to fly HLQ. This may be a good candidate!
Incredible HLQ They are working on all that stuff for it. Give them time(father and son team) and you will be able to plug it in and fly it with gps return to home. Have you looked at the 3Drobotics stuff yet? It will take some programing but it will run your quad now. If it was me I would get a stingray and setup the 3dr FC to fly it work out the bugs with it then transfer everything over to big bertha. In the mean time start with something like the flitetest electrohub kit, cheap and it can be setup for fpv. I have one with return to home and waypoints on it great little quad fast maneuverable and cheap to fix.
Incredible HLQ
HobbyKing also do a variable pitch quad now
- so, possibly that could also be used as FC test bed
There are plenty of fixed-pitch quads around that can use the APM to give you experience of flying quads & controlling the APM & Mission Planner software
- anyway, APM/Mission planner is definitely the way to go with this..
Any idea when you're actually going to maiden this?
How is yaw controlled on this? Are the engines counter rotating?
The blades are counter rotating. As the pitch is increased on one set (and lowered on the other) the drag of the combined system changes to favor a yaw rotation in one direction or the other.
What flight controller are you using? DJI? or something custom arduino or ras-pi maybe?
Jacob Bond We are using the Ardupilot APM2.5+ controller. But we have an additional arduino to handle the engine control and a raspberry pi on board as well for image capture and possible future computer vision implementations now that the new Pi 2 has been released and has some more computing power.
Incredible HLQ Nice, do you have any particular application for it? Perhaps agriculture? How much are you thinking it might lift?
não sobe e se subir não consegui se sustentar. pois tem que existe uma controladora de voo onde ela controla a velocidade de cada motor
Good morning, 4 days ago I made a request and the amount you buy gave me free fast shipping, which is done in 3-4 days, but now I check the status of my order just shows me that day 16 / 06/2015 you will be sending, need to know why this taking so long time shipping, if you request products told me they processed within 24 hours.
I look forward to a prompt response.
Thank you.
Is that a 25 dollar hobbyking transmitter? Mother of gods...
Yep a t6a 6 ch. LOL
Are those engines glow or spark?
very nice!! cp control i take it.i see your very good at building things i take my hat of to you.now then i do not have the means to play like this so if you have the time means and inclanation to. what about using those engines to drive through gears to brushless ? brushed motors as genarator's then to capasitors to esc's to brushless motors with fixed props and run a flight controller dont know if this would work but if so then scale it up and ill ride it LOL!!!!!!!!!!!.
İşte bu tam aradığım DRONE'İ buldum şimdi bu DRONE'İ almak sıkıntı orası ama süper ya
awesome!!
did it fly?
Where is the Flying Video ?
How's the cooling?
cool keep it up
Is there any progress on the quad?
does it fly?
where diid u gt the engines??????
Is this made by holy ghost?
this is impressive haha. now i know why they are curious about regulation lol. this thing could take out a car
USE EDF electric motors AND buy a Tesla Power Wall battery. In fact, Buy 5 batteries and used approx 170 EDF electric motors mounted in formation with necessary space in-between. 170 should give you 100 Kg of extra lift, i.e. rideable. //Erik S
erkanen But the TPWB's weigh 100kg, and finding the right point to mount it will also be an issue, as if too high, it'll create topple and if too low, it'll create a huge pendulus period. That will also fight the pitch and roll inputs from the airscrews.
WHAT THE FUCK ! AWESOME !
yes....great job..but .my bet is gonna be a quad (hexa,octa) copter which electric motors are gonna be fed by a gas turbine-electric generator on board...
Whats the run time on a full tank?
way is that thing not flaying
This is the kind of stuff that will ground all RC (Hobby) multis in the USA.
That is a very cynical thing to say, no, your petty government will be the reason all hobby related stuff is grounded.
Yeah if these guys decide to strap something explosive to this maybe, until then it's just a big'ol helicopter
Ỳou need a lot of C4 to have a blast that could actually destroy something, a quad is less likely to be able to carry that than a fixed wing, WHICH HAVE BEEN AROUND FOR 80 YEARS!
don't feed the trolls, please..
Thomas Shue how??
Is there redundancy, can it fly on one engine should one of them fail?
Graeme758 It does have enough power to potentially to fly on one engine if it is not fully loaded with payload.
Incredible HLQ Neat, and I imagine the engines output pulleys are on sprag bearing. I have two rc heli glow motors waiting for the release of the pitch control software. :-)
They will definitely need something like a sprag clutch to decouple the output shafts from power train upon a one or two engine failure. It doesn't appear it has that in this test as the blade hubs stop immediately with the engines. Even R/C Helis can auto rotate to the ground if the engine dies.
There are one way bearings installed in the large pulleys at the top on the input shaft. The blades still spin down rather quickly because the belts are tight and produce a good amount of friction. We have talked about putting one way bearings in the rotor shafts instead on a future version, but we think this should work for prototyping.
Incredible HLQ I did notice that in your later test videos. I think this might have even more potential scaled up by a factor of 4 or 5 and a pilots seat added. :)
What is this what is work its machine
Is the APM Quad copter system capable of running a system like this? I have a similar idea I just want to use Trex 450 Torque tube tail assemblies. Machined down of course. I think that while belts are more power effecient, they introduce more drag. I've watched Curtis fly his. It's a slick rig. Just don't care for belts.
with some major code adjustments for hardware but no versions I know of- I am still waiting to see a belt driven quad actually succeed in flying
Green_mt Have a look at the Stingray 500. Developed by Curtis Youngblood. It is an electric 3D multirotor using a single motor and a belt/shaft system and variable pitch props. They have developed a control system to take care of the stability. Hobbyking also do a version if it! th-cam.com/video/TnGhEInTXYc/w-d-xo.html
Green_mt look up stingray 500 quadcopter you will see a single motor quad running 4 variable pitch props using belt and its a 3d capable racing quadcopter
Blake Lang Green_mt Well, as much as I hate to promote a knock-off, HK has just come out with a vari-pitch quad of their own. And while so many people are sure its belt driven, I postulated, and I think it will be confirmed by rcmodelreviews, that is has shaft driven props.
muy bueno
bom para as pesoas que gosta e comtinue
Heavy lift?
You're losing a lot of lift with those fat spars being in the way. At least a third of your airscrew lift/flow is pushed into the spars, creating eddies and vortices.
good
esse da pra notar a presença dele a uns dez quilômetros .....
good good
thats sicc