BIGGER THAN A SHIP HORN OR TRAIN HORN! (N.A.S.A. Reverberant chamber HORN)

I was told that this is a reverberant chamber horn used by NASA. Reverberant chamber is unique to NASA and the USAF for testing full-size aerospace components at high levels of sound pressure.
The noise in the chambers can be shaped to match the specifications of space shuttle and rocket launches, aircraft structural excitation, engine nacelle noise, unsteady turbulent airflows, and the acoustic test specifications required for military equipment sold on domestic and export markets. This flexibility has made it possible for to test satellites, satellite payload equipment, airframes, and aircraft components . Simply put, there is a enclosed room with this horn's opening bolted to the wall with the opening of the horn facing in. They would place the object they would want to test in that room, seal it up, and fire up this monster for a given lenght of time to see if it can handle the extreme low harmonics from this horn. The only problem is, the walls also started falling apart.
This horn has a working pressure between 250-500psi. On this test video 500psi was supplied (the squealing at the begining of each honk is normal. There is an exhaust port at the back of the power chamber housing to allow the titanium and tungsten diaphragm to vibrate at high pressure supply). This horn is 7' 5" long, and is 282lbs. This horn is no longer in used because the mortar of the building started coming apart from the testing that was done over the years.

This recording was done at Angeles Crest Hwy called "Echo Point" in Southern California about 400 feet away from the horn using a Panasonic AJ SDC915 with a Canon zoom lense, 2 Behringer B-5 condenser type microphones that require phantom power. Omnidirectional heads were also used on these microphones. One mic facing the horn with the volume at level 5(still getting some distortion), and the other facing away from the horn with the volume at level 8(to pick up the echo's).

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[Atmosfear1337]

isn't that the horn from a thunderbolt?

[BIGMIKESOCAL]

@Atmosfear1337 , For the 100'th time ..No... This was specially made for NASA, a thunderbolt projector is half the size of this horn. This horn is over 7 feet tall.

[Saikano2012]

Where can I get one? I will buy 2 and put one in my house and one in my car.

[BIGMIKESOCAL]

@Saikano2012 ,Sorry, I could not answer that. This is the only known piece outside of NASA' test chamber. I paid $6,000 usd not including shipping

[noname69690]

If this thing cracked walls why didn't it crack the car's windows?

[BIGMIKESOCAL]

@noname69690 , To crack or shatter glass you must match the glass resonance frequency plus you need to produce about 140dB of that resonance frequency facing the glass directly. The resonance frequency of glass also varies, that's determined by the quality of the glass itself, its thickness, shape, temperature, etc.,.

[capie44]

I have an all-day/all-night barking dog next door...can I borrow that?

[rorybz]

The horn is an exponential horn with a rectangular cross-section. That is about all it has in common with the horn used on the Thunderbolt sirens. To produce a high-intensity signal using compressed air, you have to use a horn to convert the high-velocity, low-pressure chopped air stream into a low-velocity, high-pressure air stream to match the acoustic impedance of the surrounding air. Without the horn, you'd hear a "pfffft" sound.

[jbearden]

Powerful.

[yakripper]

when someone beeps at you... just open the trunk

[promopal]

Federal signal thunderbolt on drugs !!!

[Kerneloystarman]

@BIGMIKESOCAL also, most cars feature saftey glass nowadays

[ganymedeIV4]

Thanks for not being the only geek/nerd on the internet BIGMIKE.

That was awesome. (thumbs up + favorite)



[georgetheguniea]

its from NASA

[fattony123082]

sir I will give you a blank check with a signature fill in the amount and I will pay it...