Oops, I didn't actually committed the JSBSim version of A6M2. Now it's done. :-p
Please give it a try! BTW, I have two minor problems on this: - small vibration of tail gear. - rotating right instead of left when start taxing. If you have any idea to solve these, please let me know. Best, Tat p.s. On Feb 14, 2008, at 12:22 AM, Tatsuhiro Nishioka wrote: > Hi there, > > I'm making a JSBSim version of A6M2, and want to share with you guys about a > constant speed propellers for WWII aircraft. > > First I tried a default prop configuration generated by Aeromatic, but the > propeller pitch was adjusted automatically. > So I removed <minrpm> and <maxrpm> tags from prop configuration file and the > manual pitch control seemed working fine (Thanks to Ron for advice). > Technically it's not a constant speed propeller anymore, but the behavior of > both propeller and engine is getting closer to the descriptions in some books > that I have. > > However, there came another big problem - too much engine rpm in cruising > with lower pitch. > I tried to adjust the power table to avoid this happening but no clue. > The engine still exceeded way higher than the maximum rpm (more than 2000 > above maximum) in the lowest pitch when cruising. > Maybe I need to find the proper power / thrust correlations, but it doesn't > seem possible to me. > > As a workaround for this issue, I modified the power table to have higher > value in lowest pitch where advance ratio > 1.0 even > thrust value is zero. This way, it seems working fine - the rpm of the engine > stays a bit higher than maximum rpm. > But I'm not sure if this is a proper behavior of the constant speed props for > warbirds. > If you have any better idea, please let me know. > > If you get interested, please check out A6M2 from CVS and give it a try. > The pitch is set to the lowest for climbing. You need to adjust the pitch to > maximum in cruising. > Though the thrust/power table looks very weird, it's getting closer to zero's > behavior I guess. > > Constructive comments are very welcome. > > Best, > > Tat > > p.s. > > I'm also willing to simulate zero's manual boost controller in JSBSim. (not > sure if it is possible though) > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Flightgear-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/flightgear-devel ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
