Strange noises
Join Date: Feb 2007
Location: Amsterdam
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Might be moisture on some parts, subtly altering the aerodynamics.
I've got the same with the roof rack bars on my car. Can't hear them normally, but when driving in the rain they start to whistle.
I've got the same with the roof rack bars on my car. Can't hear them normally, but when driving in the rain they start to whistle.
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Could it be that the moisture present in the air, in the form of water droplets, reflects the noise of the aircraft back to the aircraft in a different way?
Join Date: Apr 1999
Location: The frozen north....
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Might be moisture on some parts, subtly altering the aerodynamics.
Poses some interesting points to think about, a wet airframe will be heavier than a dry one with the wings now less efficient and creating more drag for the same speed and AOA as when dry so in theory there should be a performance loss flying in rain....anyone actually noticed a difference in a spam can ? Obviously glider drviers will have but cant say I've ever really noticed in a Cessna and given I live in Scotland I've spent a lot of time flying in rain....!
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Join Date: Aug 2007
Location: 18nm NE grice 28ft up
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It's definately not the passengers as they moan all the time.
The sound is similar to the noise that occurs in the flare just before the stall warner goes off, but comes from the wing roots.
As Bp & Ua suggest it must be a subtle change in the aerodynamics.. Thanks for the replies. Other C182 users see if yours does it. Ours is a C182T
Ua. Yes, heavy rain knocks at least 5 knots off cruise.
D.O.
The sound is similar to the noise that occurs in the flare just before the stall warner goes off, but comes from the wing roots.
As Bp & Ua suggest it must be a subtle change in the aerodynamics.. Thanks for the replies. Other C182 users see if yours does it. Ours is a C182T
Ua. Yes, heavy rain knocks at least 5 knots off cruise.
D.O.
The sound is similar to the noise that occurs in the flare just before the stall warner goes off
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Air density is less too, so you may be changing the angle of attack slightly.
One for Genghis?
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Join Date: Aug 2007
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You know mad jock that's the most understandable explanation yet. I'm sure there's sponge rubber in the air vents that could do it.
I'll check it out in the bath tonight.
D.O.
I'll check it out in the bath tonight.
D.O.
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Two or three years ago I was bimbling along in the Luscombe minding my own business when a sudden vibration manifested itself. At the same time my pripheral vision picked up movement. The port lift strut had started to vibrate, somewhat alarming as it had never done so before. Something was clearly making it resonate. Judicius tweaking of throttle settings got rid of it and it did not subsequently return. Back on terra firma I phoned one of hte other group members to ask if it had ever happended to him.
"Was it raining?" he asked. Well, yes it was.
"Never had it happen to me, but I've read about it on one of the US Luscombe sites, it only happens when it is raining."
Weird
"Was it raining?" he asked. Well, yes it was.
"Never had it happen to me, but I've read about it on one of the US Luscombe sites, it only happens when it is raining."
Weird
