Problem with Condition lever in YASim turbine engine
Lee Elliott <[email protected]> Sat, 21 May 2005 10:14:28 +0100
| Newsgroups | gmane.games.flightgear.flightmodel |
|---|---|
| Message-ID | <[email protected]> |
Hello all,
I'm having problems with the condition lever in the YASim config
for the TU-114 I'm working on.
I've got a YASim config that solves and flies but if I try to
include the condition lever control the stand-alone YASim solver
appears to loop.
I've referred to the B1900d and Beech99 configs to check how it
should be done and found that while both solve the B1900d
produces the following O/P:
Solution results: Iterations: 1
Drag Coefficient: 1000.000000
Lift Ratio: 1.000000
Cruise AoA: 0.000000
Tail Incidence: -0.000000
Approach Elevator: 0.000000
CG: -0.102, -0.000, -0.113
which doesn't look right.
The Beech99 solves with reasonable results though:
Solution results: Iterations: 939
Drag Coefficient: 9.960947
Lift Ratio: 162.950500
Cruise AoA: -0.763730
Tail Incidence: -1.993015
Approach Elevator: -0.733107
CG: -5.704, 0.014, 0.278
I haven't looked much further into these configs other than to
check for stuff relevant to the condition lever but I still
haven't found why I'm getting looping with the TU-114 when
condition levers are defined.
I don't know much about flying turbine engines and there's a lot
of guestimation values in the config so I figure that I must be
asking the solver to do something impossible.
I've put a copy on the config up at
www.overthetop.freeserve.co.uk/TU-114-yasim.tar.gz
and I'd appreciate it if someone could take a look and figure out
where the problem is.
TIA
LeeE
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