4 ms·
It says it crashes if you do the thing that you would do in a normal aircraft to prevent stalling. From the other discussion I linked, it sounds like the issue
by elihu 6y ago
It says it crashes if you do the thing that you would do in a normal aircraft to prevent stalling.
From the other discussion I linked, it sounds like the issue is that the rotor normally creates forward drag, and earlier designs have the engine/thrust propeller mounted pretty high. Pushing the stick forward causes the rotor to have less forward drag than it normally does, so the engine thrust effectively causes the whole craft to pitch forward. Which is sort of what you'd expect to happen when you push forward on the stick, but I guess it happens in a way that's hard/impossible to correct from.
- taneq 6y agoThe issue is that the drag is what spins the rotor, and the rotor's rotation is what makes your controls work. So when you get close to a stall, the rotor's already going slowly, and then you push forward and it slows even further. Now you have almost no control authority and the only major force acting on the aircraft is the thrust from the propeller, which pitches you rapidly forward. I'm not sure why (given sufficient altitude) you can't cut the engine and recover using autorotation the way a normal helicopter can, but I imagine it's pretty hard to do this in a normal helicopter too if you're falling upside-down.
- Kiro 6y agoI still don't understand. If it can't stall why would you ever try to prevent stalling?
- krisoft 6y agoIt’s a reaction trained to fixed winged airplane pilots to the point where it becomes instinctual. If your airspeed is dropping low you push forward the stick. You don’t do it because you have run a fluid dynamics simulation which warned you about the approaching stall, but rather as a reflex to a set of sensory cues.