Dynamic stall discussion

[VO101_Tom]

Dynamic stall. Three things must be understood:
- If you pull the stick, you can not raise nose of the machine, but the tail press. This is an important thing, though normal flight conditions, do not even notice the difference (if you start climb with huge speed, the air flow AoA remain in small angle, no matter what is the a/c climb angle).
- If a large mass, high-speed flying, it will be great inertia.
- If the angle of the wing is above the critical value, it will stall. Speed ​​may depend on how much value, and when, but it certainly happens.

http://www.youtube.com/watch?v=xW63S...eature=related

Now imagine what happens when a high speed, sudden you pull hard on the stick. The tail pushed down, but the inertia does not allow the aircraft to rise immediately. The wing angle of attack instant above the critical value, and it will stall. That's the dynamic stall. High speed, high G.

The best example of a dynamic stall: Pugachev's Cobra

http://www.youtube.com/watch?v=1EpJ3KoUNmI