Thread: Rotation
View Single Post
  #25  
Old September 12th 06, 07:09 AM posted to rec.aviation.piloting
Mxsmanic
external usenet poster
 
Posts: 9,169
Default Rotation

Mike Rapoport writes:

In both of the airplanes that I fly, I need to trim nose down after liftoff
as the speed increases.

You can see the same thing in a paper airplane. Make an airplane that will
glide well, neither pitching down into a dive nor doing a series of
pitch-ups and stalls. Then thow it hard. The harder you throw it the more
it wants to pitch up.

MSFS may or may not closely represent an actual B58 but the principle is
correct. Whether neutral is the correct position for takeoff depends on CG.
Jet aircraft have a trim position chard where the correct takeoff setting is
given for a given CG location. On a twin where the props are blowing air
across the wing and tail it also depends on how much power the engines are
producing which is affected by altitude, temperature and mixture setting.


Unfortunately MSFS doesn't seem to provide much documentation on how
to set the trim for each aircraft and situation (or I haven't found
it). I guess I'll have to experiment. Fortunately trial and error is
not dangerous in a sim.

--
Transpose mxsmanic and gmail to reach me by e-mail.