Feasibility of a twin engine UAS

I am wondering how reasonable it would be to build a twin engine VTOL UAS that uses some sort off 2 dof gimbal/engine mount for ‘drone’-like flight but could convert to standard wing-lifted flight. Right now I am thinking something along the lines of a terminator hunter killer shape but using brushless engines and props. I have seen several that appear to fly like the V-22 osprey and have what are for all intents and purposes rotor rather than standard length props or use 4 tiltable brushless motors. Does anyone know of any current RC aircraft that operate like this, the criteria being the ability to loiter like a quadcopter transition back and forth between this mode and standard wing lift flight?

Is that a trade phrase?
It made me LOL.
And cool questions. I don’t know the answer, but am also interested to find out.

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LOL, it should be, multi-rotors are good at it and then they can zip off and do it elsewhere.

Notice I used a fictional aircraft for my example of what I’d like it to look like… because:

https://warisboring.com/your-periodic-reminder-that-the-v-22-is-a-piece-of-junk-db72a8a23ccf#.utwi05tww

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Something like this?

:smiley:

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LOL, but it has rotors though…

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Sounds complicated… :smiley:
Have you searched the FliteTest site? If anyone has done something like that, I would bet on those guys.

Good point, I’ll give them a look.

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Speaking of complicated…

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LOL I’ve seen it done with EDFs there is an avatar gunship out there.

This is making me want to pull my cobbled-together F450 clone out of the closet and fix some stuff…

I’ve seen many examples of this in Model Aviation and other places.
Here’s one that looks cool: https://www.youtube.com/watch?v=FSc2ZKieNZ8

just search for “rc osprey”

this one doesn’t have gimbals, and it’s 4 blades, but it’s still cool, and it’s human scale… http://www.hover-bike.com/

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The tilt rotor osprey is a bucket …

The CH47 Chinook helicopter posted above is a reliable 40 plus year old workhorse and the one of the fastest moving targets in the true rotor wing field(been there, done that, in real life - not from a game console)

Not to be mistaken with the other USMC bucket of …CH46 Phrog

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Hmmm it almost looks like the blades on that Walkera are variable pitch (or whatever that is for rotors, variable angle of attack?). :frowning: Wondering if I could make this work with standard quad props, the biggest thing I can think of that would make it have problems is getting enough pitch authority at low speed. Not sure how to pull that off realistically with fixed pitch props. I think I may be spending some time in X-plane’s plane-maker this weekend.

yup - for sure variable pitch is out there. just search “rc variable pitch propeller”

you can go hobby size:

or “a bit larger”:
http://www.nwuav.com/uav-products/variable-pitch-propellers.html?gclid=Cj0KEQiA0L_FBRDMmaCTw5nxm-ABEiQABn-Vqf87KKROvs89t3VFs-r9l2G_7o9ei_bt6DJ_BWRoucEaAh8T8P8HAQ

image search shows quite a variety:
https://www.google.com/search?q=rc+variable+pitch+propeller&espv=2&biw=1745&bih=973&site=webhp&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjzwYjV3KjSAhUhxoMKHb1MBrgQsAQIJQ

My cousin has completed a v-tol wing (its a modified FT Mini arrow with a blunt-nose-versa-like conversion and twin tractor like the kraken) but in v-tol it uses the elevons instead of gimbaling the motors