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15 commits

Author SHA1 Message Date
timoore
62bca8368e YASim flap changes from Vivian Meazza 2008-09-29 08:00:20 +00:00
andy
16b11e311c Fixes from Maik Justus:
+ The wing compilation step was accidentally omitting regions that lie
  between the tips and the first/last control object.  That's a real
  problem for wings that contain no controls, and a significant issue
  for those that contain only a few.  I'm stunned that this went
  undetected for so long.
+ The Surface::flapLift() function was oddly returning 1.0 Newtons as
  a minimum, instead of zero.
2006-08-07 16:49:26 +00:00
andy
1e3f0f0050 Fix stall widths for the "auxilliary" (reverse flow) stalls so they
are sharp, as intended.  These were are never seen in practice; I
found the problem while looking at 360 degree lift curve graphs
looking for discontinuities.
2005-11-10 20:26:37 +00:00
andy
1bc3c5eca0 Yank the sqrt() terms from the twist calculations. They were causing
solution failures for reasons I have still to investigate.
2004-02-13 18:12:08 +00:00
andy
fc565ebd86 Put the sqrt(frac) terms back into the wing twist. 2004-02-09 19:53:14 +00:00
andy
85115ef347 Fix the left/right terms in the twist handling to be symmetrical. 2004-02-09 15:18:33 +00:00
david
b78d5a0b93 Interpolate the twist linearly over the wing.
Reduce the minimum number of twist segments from 16 to 8.
2003-02-18 17:37:28 +00:00
david
7228024ed5 Added a "twist" attribute for wings to allow for washout (or washin,
if desired) in the stall.  This allows for fairly docile stalls when
desired, as on trainers (you also need to limit the elevator lift).
2003-02-18 16:50:07 +00:00
andy
fe4e83a10b Added a tunable "induced drag" number to aircraft. One of the things that
isn't well-constrained by the solution process is the drag-vs-aoa curve.
The default value that YASim picked was very steep, and resulted in most
of the jets flying their approaches *way* behind the power curve.  This
changes the default to be more forgiving, and adds an "idrag" tunable
to the configuration file for tweakers.

Also, change the default gear springiness to be less stiff.
2002-11-30 02:24:16 +00:00
andy
f324ea9bad The incidence setting only works on a compiled object. If setIncidence
is called on a non-compiled object, make sure to re-set it after compilation.
2002-05-29 07:07:29 +00:00
david
56473dc28d Mac OS X fixes and MSVC warning fixes from Jonathan Polley. 2002-05-10 23:35:06 +00:00
andy
764eb2a2e7 Automatically generate "contact" points for collision detection. Implemented
as extra (and invisible) gear objects.
2002-02-20 07:12:27 +00:00
curt
48260480b3 Updated to YASim-0.1.2 2001-12-07 20:00:59 +00:00
curt
4c422bbe6d Updated to YASim-0.1.1 2001-12-06 18:13:24 +00:00
curt
5b84ae51a5 Initial revision of Andy Ross's YASim code. This is (Y)et (A)nother Flight
Dynamics (Sim)ulator.  Basically, this is a rough, first cut of a "different
take" on FDM design.  It's intended to be very simple to use,
producing reasonable results for aircraft of all sorts and sizes,
while maintaining simulation plausibility even in odd flight
conditions like spins and aerobatics.  It's at the point now where one
can actually fly the planes around.
2001-12-01 06:22:24 +00:00