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A comment on Boeing has flown the 747-8 to Mach .98, within 7 knots of Mach 1.

Re:Boeing has flown the 747-8 to Mach .98, within 7 knots of... by otto on Tuesday February 15, 2011 @02:34AM (#2220489)
Without altitude and temperature a Mach number is rather useless. (Depending on altitude the temperature and pressure changes which has an effect on the speed of sound.)

Also was this just the Mach experienced at the leading edge?

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Re:Boeing has flown the 747-8 to Mach .98, within 7 knots of... by Nick_C on Wednesday February 16, 2011 @03:31AM (#2225671)
>Without altitude and temperature a Mach number is rather useless

Actually, no, it's the most important number. See http://womanpilot.com/?p=61 (near the end) for why.

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