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Old 23rd Mar 2009, 19:34
  #148 (permalink)  
Flight Safety
 
Join Date: Jan 2001
Location: Dallas, TX USA
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Harrymann, so normal positive longitudinal stability has some tailplane drag (both trim and profile). Then for range considerations, they decide to remove the trim drag with low positive or neutral longitudinal stability with a CG change, and then reduce the profile drag with a reduced tailplane, never mind what happens to the tailplane authority with reduced speed and 50 degree flaps. After this, they try to address created issues by "fixing it in place" with the LSAS and other things.

I understand now.
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