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Old 03-23-2012, 11:12 PM
  #27  
grecoaj
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Joined APC: Mar 2011
Position: CFI
Posts: 45
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Single engine:

The propwash is absolutely rotating when it leaves the blades. One way I came to that conclusion because the exhaust leaving a jet engine is not rotating due to stators, among other reasons.

If the plane was parked, breaks on and engine speed high and constant, would that mean the left-turning tendencies of "gyroscopic effect", engine torque and p-factor would not be realized? Any stresses on the airframe and gear would be from spiraling slipstream only.

(Got an argument for engine torque? Line two planes up, one behind the other. Have the propwash from the front plane wash other back one, which isn't running and take the stress/strain measurements)
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