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Re: Campbell's even crazier than a MANIAC? (archeopteryx climbing)
----- Original Message -----
From: "Erik Boehm" <email@example.com>
To: "DML" <firstname.lastname@example.org>; <email@example.com>
Sent: Monday, September 29, 2008 10:15 AM
Subject: Re: Campbell's even crazier than a MANIAC? (archeopteryx climbing)
When it comes to rotary wings, they don't have a conventional stall speed,
rather the velocity component of the air flowing perpendicular to the
rotor disk must be above a certain rate for a given blade pitch to keep
the blades rotating.
For a given pitch the blades must be at a certain rpm, or the blades
Which is the reason that the retreating blade on a helicopter or autogyro is
flown at a higher angle of attack than the advancing blade. The upper speed
limit for helicopters under power is set by retreating blade stall.