David Megginson wrote:
Andy Ross wrote:

Windmill (i.e. zero torque) speed is 450 RPM.

Windmill drag at that speed is 47N, about 10.5 pounds of force, or
about 5 equivalent horsepower at that airspeed.


When you shut down the engine in YASim, the propeller does not windmill -- it just slowly spins down and stops.

I see the same thing in the JSBSim c172, except that it spins down rather quickly and stops.


Regards,

Curt.
--
Curtis Olson   Intelligent Vehicles Lab         FlightGear Project
Twin Cities    [EMAIL PROTECTED]                  [EMAIL PROTECTED]
Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org


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