Donatello
RETIRED TTA
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Sir am not a helicopter pilot or been in one . All I know is that when an object free fall depending on it altitude impact force increase or decrease. And Nose Dive or Nose up what kind of impact will it make on gravitational pull? That's what my point. When rotor is running then its different story .
Hi,
The altitude is important. Just like in a fixed wing aircraft, the higher the altitude you have, the longer the controlled glide you can do without any engine power at all. So in this case, the helicopter was not very high, the margin of opportunity to pilots was almost non-existent. Take off and landing of a fixed wing or rotary wing aircraft is the most dangerous situation.
However, say the helicopter was at 10,000ft. Even if the engines lost power, and rotor lost speed, the pilot can adjust the pitch of the rotor blades such that, as the helicopter falls, the rotors starts to 'windmill' due to the rush of the air coming from underneath.................and that creates a drag on the rotors, which are connected to the chopper and thus will arrest the fall speed of the chopper, thereby reducing the impact. However if you only had 50-100 meters, hard luck then.