|
Al, OK, so my gyro tumbled a little. Back to
needle, ball and airspeed until I get this thing right side up!
Thanks.
Bob Darrah
----- Original Message -----
Sent: Friday, July 16, 2004 7:49 PM
Subject: [FlyRotary] Re: 11th test
flight
Subject:
[FlyRotary] Re: 11th test flight
"Just
as speed increases at as the cube root of hp, so does it decrease as the cube
root of drag."
Al,
shouldn't that be: so does it decrease as the drag CUBED? No
guarantee's, but from memory (poor), I thought this would be
closer.
Bob
Darrah
Bob;
Only if you are
looking at it upside downJ. The speed
changes as the cube root of the hp or the drag; one directly and the other
inversely. If you start with the speed, you cube the ratio of the speed to get
the change in drag. So if the speed drops for 135 to 125; 135/125 =
1.08. 1.08 cubed is 1.26. Drag has gone up 26%.
Unless I have it
wrong . . .
Al
|