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The mkiv Supra Owners Club

Mythbusters car crash at close to speed of sound


Gaz6002

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nice, but that was not mach1.

 

Thats why title says "close to speed of sound" :innocent:

 

Given the speed of sound is around 747mph at upto 5,000ft, the mean height across New Mexico is 5,700ft above speed level.

 

The sledge was approximately 650mph.

 

Given Mach=V/A; 650/747 = Mach 0.87.

 

Close enough for me.

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speed of sound is in relation with temperature. not altitude.

LSS (kt) = 38,94x(square root of T(°K) [273°K = 0°C]

LSS = 661 kt (at sea level at ISA temp.= 288 k) (ISA@SL=15*)

i doubt it was anywhere close to 15*

 

new mexico is a hot arn place, so i would expect it to be about 30* if not even more

38.94 x V273+30= 677KTS

677KTS x 1.1508=780MPH = M1

Mach# = TAS/LSS

since we are dealing with GS it will vary by a factor i don't have but WTH

650/780=0.83

 

AND I AM NOT BEEN A DICK ABOUT IT, I AM JUST SO BORED LOL (btw, i am not a nerd, i just work with those formulas everyday)

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