Cessna
 

Does anyone know the source of the weird sound Cessnas make as you flare? Like this..at about 2.20 to 2.30 (not the stall warner) sort of a sound like gas escaping from a bottle. I reckon it might be the wing air intakes for the cockpit ventilation but I'm not sure.

Sound is from the stall warn. In the C 172 it is a trumpet with a reed in it. Unlike the electrical vane type it is not a on/off unit. You will hear the air rushing into the trumpet before there is enough air flow to push the reed over enough to sound the horn.

Thanks, knew it was some sort of 'wing hole thing'!

like one of my instructors was use to say that's the "good landing" indicator noise :}

I've asked this question before. Our c182 does it as well usually when heavily loaded. Ours has an electric stall Warner which goes off at the same time.
I thought the noise may come from the flaps but you may be correct.

D.O.

I don't think the sound has anything to do with the stall warner.
Quite sure the sound is comming from the air vents.

I have always assumed this noise was generated from the (almost) windmilling prop at a high AOA in the flare.

Why not ask Cessna? At least then you'll have a definitive answer :)

I would be interested to know also.

I've also wondered this. Doesn't seem to be stall horn related. For me it's always when I pull the nose up to hold-off, then flare. I put it down to a change in airflow around the cabin/windscreen as the pitch is increased and power reduced.

Stall warner.

Wheel spin-up?

It's before the wheels touch the ground. Happens on a 152 as well but not a PA28.so it's obviously something peculiar to Cessnas.

Stall warning horn.

I've heard this sound on several types. It's a sigh of relief from the right seat.:)

It is caused by changing airflow over the Engine Baffles just inside the Cowling. The noise on our C150E changed when we replaced/repaired worn Baffles.

Any advance on stall warner, engine baffles, wheel spin up, fresh air vents, flaps and windmilling props? :)

It could happen :}

OK, can't resist a challenge!

Those wheel struts look just like a giant tuning fork! :)

It's the stall warner. Same as my 172.

I always thought it was the sharp intake of breath from my instructor as we are about to leave a crater in the ground (or go bunny hopping down the runway!)