Silly Horns

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Ex-Moderator R.I.P.
Joined 2005
Ok, first up some units of unknown origin (in other words I have forgotten where I got the pics):

Enjoy,
Deon

:) super cool :smash:
 

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sound testing of USAF airplanes

Art there is enough difference between vibration excitation and noise excitation that I know for a fact that NASA used sound to test modules for rocket launces.

I don't know about airplanes.

The sound levels at launch are so great that they dampen it out with a water spray. When you see a shuttle launch, all that "smoke" is actually steam from the water injection. The water vapor absorbs a lot of the sound, but it is still quite intense.

Hi there: Visited Wright Patterson AFB in 1963, along the tour was a giant anechoic chamber able to test a full sized fighter aircraft using air driven sirens as the sound source ...regards, Michael
 
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