Andy Ross wrote:
> Sent: 18 April 2004 19:04
> To: FlightGear developers discussions
> Subject: Re: [Flightgear-devel] Spitfire & Hurricane manuals
>
>
> Vivian Meazza wrote:
> > YASim crashes, or perhaps, fails to converge, just by attempting to
> > run with <takeoff-power="1100" takeoff-rpm="1360">
>
> Crashing and solution failure ought to be easily
> distinguished. :) Maybe the recent logging changes have
> hidden the failure message, I'll take a look.
>
> Try running the command line "YASim" program on your XML
> file. It will give you a solution (and print the report)
> result much faster than a full fgfs invocation.
>
> I'll take a look at the file as soon as I can.
>
> Andy
>
Thank you for drawing my attention to that utility.
Using these values:
<propeller x="-1.10" y="0" z="0"
radius="1.638" moment="37.15"
mass="2000"
eng-power="1140" eng-rpm="2850"
turbo-mul="4.0" wastegate-mp="28"
cruise-alt="17500" cruise-power="2850"
cruise-speed="308" cruise-rpm="2850"
takeoff-power="1100" takeoff-rpm="2850"
manual-pitch="true"
gear-ratio = "0.477">
YASim converges nicely.
With these values
<propeller x="-1.10" y="0" z="0"
radius="1.638" moment="37.15"
mass="2000"
eng-power="1140" eng-rpm="2850"
turbo-mul="4.0" wastegate-mp="28"
cruise-alt="17500" cruise-power="2850"
cruise-speed="308" cruise-rpm="1359"
takeoff-power="1100" takeoff-rpm="1359"
manual-pitch="true"
gear-ratio = "0.477">
YASim appears go into a loop and provides no output. The only way out is to
shut down Cygwin.
Vivian
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