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Old 03-29-2017, 09:44 PM
  #5  
Chad Veich
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Engine thrust is measured against the incidence of the horizontal stab which may or may not be parallel to the fuselage datum line. Just because the engine is not angled down as compared to the datum line does not necessarily mean it does not have down thrust. In fact I would hazard to say that most WW2 fighter types have the engine set to zero as compared to the datum but have the horizontal stab set with positive incidence. The end result is down thrust. As for side thrust my experience has been that most full size WW2 fighters do not have any. Instead they use an offset vertical fin or some other method of countering engine torque. A degree or two of right thrust cannot hurt but is not absolutely necessary if you have a well trained left thumb. We are generally not dealing with the massive propellers that featured on the real airplanes and the torque is manageable with good piloting. My .02 cents only of course.