N91CZ has been a flying laboratory for most of this year.  Below are links to three reports that may be of interest to the Lancair community, in particular 320/360 flyers.

 

The first takes a look at the effect flap position has on total aircraft drag using the NLF(1)-0215.  The numbers are quite impressive in terms of drag coefficients.  In the end, it looks like we could benefit from a little more reflex beyond -7 degrees.

 

The second report looks at the neutral point differences and static margins of the small and large tail 320/360 models.  A large portion of the document is a tutorial of sorts on longitudinal stability.  It deals only with static stability, but is a good lead-in to the third report.

 

The third report looks at the stability of the 360 MKII in much greater detail.  It include dynamic stability in both cruise and landing configurations, as well as, stick force gradients and elevator effectiveness all the way down to stall speed.

 

 

Chris Zavatson

N91CZ

360std