Lee Logan
Joined: 10 Jan 2006 Posts: 86
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Posted: Thu May 25, 2006 8:44 am Post subject: AeroElectric-List Digest: 7 Msgs - 05/24/06 |
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Kevin, your extension of the discussion between you and Dan sounds like the
right track to me. Readily explains how so many of these aircraft
(apparently) really do fly faster at 75% than the straight "math" would hav=
e
you to believe. I am pretty confident that Van's numbers are right, but so
are you. There is a little aviation "slight of the hand" going on here.
Speeds go up as density comes down with altitude, but normally aspirated hp
goes down too. The two cross over at around 8,000' and 75%. No surprise
the manufacturers ALL picked 75% hp as the benchmark for their specified
high speed cruise numbers.
Regards,
Lee...
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