whip stalls
Thread Starter
Joined: Mar 2001
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From: Toronto, Ont, Canada
whip stalls
... are prohibited in Cessna 172's / 152's, and I presume any other light aircrat.
Is that because of excessive negative g's being developed ?
What would be a guesstimate on the amount of g's developed ?
Mike
Is that because of excessive negative g's being developed ?
What would be a guesstimate on the amount of g's developed ?
Mike
Joined: Jan 2002
Posts: 156
Likes: 0
From: Sandwich, Kent, UK
A "whip stall" is apparently the same as a tail slide, if that helps anyone actually answer the question... (sorry, I can't answer it myself).
Definition of a whip stall
NOUN: A usually intentional stall in which a small aircraft enters a vertical climb, pauses, slips backward momentarily, then drops nose downward.
Definition of a whip stall
NOUN: A usually intentional stall in which a small aircraft enters a vertical climb, pauses, slips backward momentarily, then drops nose downward.
Joined: Jun 2001
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From: Boldly going where no split infinitive has gone before..
The transition from vertical up to vertical down is actually around zero "G".
I think the problem for non-rated aircraft is the possibility of reverse air flow during the tail-slide, with associated probable control snatch.
I think the problem for non-rated aircraft is the possibility of reverse air flow during the tail-slide, with associated probable control snatch.
Joined: Jun 2001
Posts: 889
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From: Australia
You can stop control snatch by holding the controls tightly. But if you didn't, the elevator / rudder would probably be damaged quite badly, as the C152 control stops are very small and very close to the hinge line. Perhaps Mr Cessna is just playing safe with what is after all only a semi-aerobatic aircraft?
The 172 on the other hand is not aerobatic at all as far as I know, although it is spinnable.
To answer the original post, although the transition from up to down is approx 0g, the pendulum effect after transition to vertical down can give ±2g in my limited experience. Not enough to hurt a 152. Can't say it makes me feel great though...
The 172 on the other hand is not aerobatic at all as far as I know, although it is spinnable.
To answer the original post, although the transition from up to down is approx 0g, the pendulum effect after transition to vertical down can give ±2g in my limited experience. Not enough to hurt a 152. Can't say it makes me feel great though...
