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Article #680

Re: MACH 8

#680
From: steve hix
Date: Wed, 23 Dec 1992 19:53
28 lines
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In article <1992Dec23.173753.14938@mksol.dseg.ti.com> martinn@mksol.dseg.ti.com (niels r martin) writes:
>
>If the point of the question is:  "can you go faster at Mach 1 at sea level
>or at high altitude?"  The answer is probably not yes or no, but rather
>gets into the max dynamic air pressure that the structure can handle

and various airframe and engine heat limits

>--for example, the SR-71 could apparently not go much faster than 200 mph at sea
>level because of the dense air causing structural damage if it exceeded that
>speed--

In 1968 on Armed Forces Day, I was a guest of the father of a high-school friend
at the air show at Pt. Mugu NAS.

*The* highlight of the day was a flyby (suprise!) by an SR-71.  Two, actually:
The first with everything hanging out at a bit over 200 mph.

The second was better: cleaned up, just barely sub-Mach 1 until it passed over
the beach, went into afterburner and climbed away and out of sight in a few
seconds.  Took hours for the grins to dissipate. (Huge noise as the throttles
went forward, too.)

--
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From: fiddler@concertina.Eng.Sun.COM (steve hix)
Newsgroups: sci.aeronautics
Subject: Re: MACH 8
Date: 23 Dec 1992 19:53:08 GMT
Organization: Sun
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References: <10302@ncrwat.Waterloo.NCR.COM> <alien.020z@acheron.amigans.gen.nz> <1992Dec23.173753.14938@mksol.dseg.ti.com>
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