Jim Wilson wrote: > Here is my local config for the p51d yasim propeller. Most of these > values > are pretty much on target according to actual specifications. The problem > is > that it "appears" to not produce sufficient thrust. > > Is it possible that we have a flaw in the thrust calculation? Does anyone > have any actual data for p51-D thrust? > > > <propeller x="-0.75" y="0" z="0" > radius="1.75" > mass="1690" moment="94.5" > cruise-alt="21400" cruise-power="1470" > cruise-speed="380" cruise-rpm="1200" > gear-ratio="0.479" > manual-pitch="true" > > <actionpt x="-1.25" y="0" z="0"/> > <control-input axis="/controls/engines/engine[0]/propeller-pitch" > control="PROPPITCH" > src0="0" src1="1" dst0="0.40" dst1="0.82"/> > </propeller> > >
I think your numbers are spot on. This is the issue that we tackled just about 12 months ago in the context of the Spitfire. Andy produced some new code, but it doesn't converge properly for very similar numbers for the lower-powered Merlin that I was trying to model. That's where it's been stuck since then. Nice to get it fixed up some time soon. Regards, Vivian _______________________________________________ Flightgear-devel mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
