jbhart(at)onlyinternet.ne Guest
 
 
 
 
 
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				 Posted: Wed Oct 06, 2010 9:24 am    Post subject: Thrust to Chord Angle | 
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				Kolbers,
 
 Having read that some have set the thrust vector parallel to the wing bottom 
 surface and then wondering what angle should the engine be set to best 
 performance, I thought I might relate my experience with the FireFly.  At 
 first I built a AOA meter and measured the wing AOA at my cruse speed.  Then 
 I washered up the rear of the engine so that the thrust line was parallel to 
 the relative wind.  Later on, while studying the effects of power factor, I 
 was able to further refine the thrust angle to remove all power factor 
 influence at cruise.
 
 At the time I put up a page on how it was done.  They can be seen at:
 
 http://jackbhart.com/firefly/firefly56.html 
 
 If you are interested, you can repeat the same procedure by removing all 
 rudder trim and using the slip indicator to help you to washer your engine 
 up or down to remove all power factor slip at your desired cruise speed.  
 When you have found that point, you can re trim the rudder to remove the 
 remaining slip at your desired cruise.
 
 Jack B. Hart FF004
 Winchester, IN
 
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