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Long ago - prop effects under x-wind...


Anatoli-Kagari9

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Long ago there was a thread initiated by me regarding a "weird" effect I had noticed in the P51d, namely the fact that on takeoffs under strong x-wind components, during the initial stages of the takeoff run there might be need to use upwind rudder and even a bit of downwind aileron, which appeared to me as totally unplausible...

 

There were variosu factors mentioned among which the effects of the deflected propwash / slipstream as full power is added for the start of teh takeoff run.

 

I was convinced further along that thread where Yo-Yo himself offered his view / explanation that the effect did make sense, but the following lesson taken from an interesting Indian University site pretty much explains how sometimes the deflected propwas can actually have a negative contribuiton in Cnβ

 

See Fig. 5.6 on page 3.

Flight Simulation is the Virtual Materialization of a Dream...

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