RE: [Jsbsim-devel] C-172 Performance

[Jon B. <js...@ha...>]

Here's something to try. First off, I'm not sure which C-172 is leading to concerns, the P
or R version.

Here are some things to try for testing:

Make sure the pilot and a passenger are present (using the POINTMASS descriptor). Add 120
pounds of baggage (at the CG). Make sure a full fuel load is carried, and that the base
aircraft weight is correct.

Try using this prop for testing:

<AC_THRUSTER FILE="prop_generic2f">

NOTE: This prop isn't set up at this time to feather or provide drag correctly.

Like I said, I have tested the C-172x (essentially the R model) and so far have found that
with the above mods the aircraft performs fairly well compared to the published figures -
within 10% and sometimes as close as 1%.

Sea level speed seems good, too - my tests show it less than 1% off.

However, this is not a rigorous set of tests I have done. I'll try and formalize the
testing and publish the results as well as the comparison data. That ought to be
productive.

Jon