>On Tue, Apr 02, 2002 at 11:05:18AM +0800, ???? wrote: >> Could someone help me out please? >> In the JSBSimCoordinates.pdf from http://jsbsim.sourceforge.net, we know that the >Xbody Axis positive forward out through out the nose of the plane, Ybody positive out >the right side, Zbody Axis positive downwards. Then we know that: >> (look from the tail of the plane) >> (1) roll rate (p) clockwise are positive; >> (2) roll angle (phi) clockwise are positive; >> (3) left-aileron up and right-aileron down are positive; >> Right? > >The flight controls follow the right hand rule relative to the body axis >system. This means that *both* ailerons are positive trailing edge down >and negative trailing edge up. In the older version of JSBSim, we control the two ailerons at the same time. The turnning orientation of them are opposite(One up , another down)? if so , left-up and right-down are positive? In the newer version of JSBSim , we can control the two ailerons separately. then Can they somtimes act as flags do? and what is the positive position of them? I am using the older version of JSBSim with ailerons controled simultaneously. thanks. > >> Assume the plane flying steadily now, >> if aileron left-up and right-down , that is aileron position increase , the plane >would roll anti-clockwise, that is roll rate (or roll angle) would decrease? Right? >> But why does JSBSim not match it? When I increase aileron position, the roll rate >and roll angle increase too. >> Who can tell me why? >> >> >> >> >> >> >> _______________________________________________ >> Flightgear-devel mailing list >> [EMAIL PROTECTED] >> http://mail.flightgear.org/mailman/listinfo/flightgear-devel > >-- >Tony Peden >[EMAIL PROTECTED] >We all know Linux is great ... it does infinite loops in 5 seconds. >-- attributed to Linus Torvalds > >_______________________________________________ >Flightgear-devel mailing list >[EMAIL PROTECTED] >http://mail.flightgear.org/mailman/listinfo/flightgear-devel
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