3 ms·
Anyone know if it's a series or parallel hybrid? Looks like it uses electric motors out on the props like most drones which would imply series. If so interested
by SigmundA 6y ago
Anyone know if it's a series or parallel hybrid? Looks like it uses electric motors out on the props like most drones which would imply series. If so interested to know the generator setup, usually thats heavy / inefficient vs mechanical drive from engine, but quad copter needs independent speed control for each prop to steer I thought.
- jcims 6y agoThere’s a few collective pitch quadrotors that use a single gas drivetrain to spin the props and servos for pitch control. Example: Stingray 500 - https://youtu.be/TnGhEInTXYc?t=36 https://youtu.be/TnGhEInTXYc?t=36 Agree with your observations. This is a big quad, 30” (fixed pitch) props and not a ton of payload...probably serial.
- pfundstein 6y agoWhat advantage would a collective pitch quad have over a helicopter?
- jcims 6y agoDunno. I imagine it's use-case dependent, quads can go faster (rc quads can hit 200mph) and are more nimble (presumably due to lower moment of inertia). I have zero clue how they would scale up though. All I know is that I'm not flying in a quad and helicopters seem to haul heavy shit pretty well.
- pfundstein 6y agoIt sounds like you have seen little of the speed and agility RC helicos can exhibit, for example: https://www.youtube.com/watch?v=PptMrBFAO-A https://www.youtube.com/watch?v=PptMrBFAO-A
- jlcortex 6y agoYes, it is a series hybrid, the engine acts as a range-extender. The mechanics of the aircraft are much simpler this way and therefore more reliable. We are not sure about the efficiency, though. There are no helicopters under 25kg MTOW with our flight time right now.