PPRuNe Forums - View Single Post - Helicopter down outside Leicester City Football Club
Old 7th Dec 2018, 21:25
  #1011 (permalink)  
ShyTorque

Avoid imitations
 
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
Posts: 14,573
Received 421 Likes on 222 Posts
Originally Posted by Ahernar
Ofc , i was meaning the rpm of the cabin !!!
@ Uplinker
You lose TR , you spin faster and faster until at certain rpm the drag from the spinning body of the heli counterracts the rotor drag . Unfortunately no human can control a helicopter spinning like that , but a computer surely can ,go watch that rocket gently land after spinning from several km height . I'm not expecting the control system to be able to keep it right afterward it lands so the machine will be lost but the landing would be gentle and very survivable ( except some bad cases of fire / bad terrain ) .
If the cabin rotates at 130 rpm, this will result in a net loss of 130 rotor rpm. This would almost certainly result in the same outcome - it is a loss of almost half the rotor rpm needed to sustain lift and the integrity of the disc would probably be lost, especially as the aircraft would be descending at a high rate.
ShyTorque is offline