Conversion from PA28 to Cessna 152
Join Date: Jan 1999
Location: north of barlu
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Timgriff6
I think he is saying that the stall warning is not electric.
Not having seen a 172 recently I can only remember the stall warning system on the 150/152, this uses a slot in the leading edge of the wing that is connected to a horn in the cockpit, the reduction in air pressure at the leading edge due to the movement of the stagnation point as a result of increasing angle of attack activates the horn.
This system can be checked on the ground by placing your lips on the slot in the wing and sucking, I did at one time demonstrate this to students but have stopped the practice having seen a wasp exit the stall warning slot only seconds before I was about to demonstrate the system !
Not having seen a 172 recently I can only remember the stall warning system on the 150/152, this uses a slot in the leading edge of the wing that is connected to a horn in the cockpit, the reduction in air pressure at the leading edge due to the movement of the stagnation point as a result of increasing angle of attack activates the horn.
This system can be checked on the ground by placing your lips on the slot in the wing and sucking, I did at one time demonstrate this to students but have stopped the practice having seen a wasp exit the stall warning slot only seconds before I was about to demonstrate the system !
Not having seen a 172 recently I can only remember the stall warning system on the 150/152, this uses a slot in the leading edge of the wing that is connected to a horn in the cockpit, the reduction in air pressure at the leading edge due to the movement of the stagnation point as a result of increasing angle of attack activates the horn.
This system can be checked on the ground by placing your lips on the slot in the wing and sucking...
This system can be checked on the ground by placing your lips on the slot in the wing and sucking...
MJ
Join Date: Apr 2013
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While on the topic of flaps, older models with 40 degree barn-door flaps will let you stop-and-drop the airplane. Fantastic stuff. Just don't try to climb like that.
I could not believe how fast (& safely) we were plummeting towards the ground & in close proximity to the runway numbers. During the dive he told me to get ready to catch the plane & level out on his hear say! Awaited his command & executed the catch & flare to perfection... even got a round applause via the RT from the AFISO as I taxied away retracting those marvelous flaps in the process