Settle a bet: Mach speeds

B-58 Hustler History: http://members.cox.net/dschmidt1/
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"Arie Kazachin" wrote in message
...
In message M7Mqc.31369$Md.30236@lakeread05 - "Darrell"
writes:

I think that value should be 100 ft/sec. Mach one is about 600 Knots = 1
NM/Min. One NM = 6,000'. Divide 6,000 by 60 (seconds in a minute) and
you
get 100, not 1,000.


I think you made a mistake at the very beginning:

600 knots = 600 MN/Hour = 600 NM/3600 Sec = 1/6 NM/Sec = 6000/6 ft/Sec =
= 1000 ft/Sec.

BTW, I think at sea level Mach 1 is around 660 Knots (at some "average"
temperature).

I fall on my sword! I screwed the pooch on that one. The 600 knot/mach 1
value worked pretty well for us in the Hustler since we couldn't go mach 1
at sea level (legally). We were limited to the most restrictive of 600 KIAS
/ Mach 2 / +115 C RAT. Although we had "momentary" limits higher.