December 22, 2004 at 12:45 pm
OK… seeing as the other thread has been closed off… I just wanted to know if the circumstances of this crash were the same as the one back in the 1990’s. I.e. a pilot induced oscillation?
This is quite an easy situation to get into if you’re not properly aware of it. For those who don’t know what I’m talking about…
The F-22 has something in its flight control system to make it fly like a turkey when the gear is down. This is to make it landable! If the aircraft is disturbed by a gust forcing the aircraft down when the gear is down, the pilot will pull up… as is his natural reaction, also the pilot will bring the gear up to get speed to get the hell up away from the ground. In doing this, the mechanism in the flight control system makes the aircraft very agile. So the aircraft leaps upwards too quickly, and may be in danger of stalling… so the pilot pushes down… quickly… but the aircraft responds too quickly so the aircraft is pointing at the ground at a steep angle, so the pilot pulls up and so on. This will continue until the pilot thinks that the flight control system has screwed up and will eject.
This was the cause of the first crash… pilot following his reactions caused it to crash. If the pilot let go of the stick when the aircraft was disturbed, the flight control system would sort the aircraft out naturally.