Flightgear cessna 172 tutorial11/25/2023 ![]() Thanks in advance for any help! poupou Posts: 7 Joined: Thu 10:50 pmįor the version, according to the starting screen, it seems to be 2020.3.5 I tried using the same protocol on another Cessna, the 182S, and it worked right away. I'm having a really hard time figuring out why it's not working I don't think that altitude is to blame, since I've tried starting in Hilo and Montreal without success. Now for some reason it doesn't want to start whether I'm following the start tutorial, doing the checklist (following all the elements one by one until they turn green) or using the autostart function (right after having restarted my computer and FG). I downloaded FG yesterday and managed to start the Cessna without trouble a couple of times. ![]() I would assume that I am the one doing something incorrectly, but can't find what. Eventually you’ll get to low enough a throttle setting that the propeller is below its governing range and from there throttle controls RPM as well as MP…but that’s a function of prop mechanics and not the physics of manifold pressure.I am having a similar problem (not being able to start the plane). ".since most MP gauge-equipped airplanes have constant-speed propellers, the RPM will not change as a result. At least someone else faced this eleven years ago, though in FSX -īTW, found this in an article on mp (italics mine): Being insufferably lazy, I will first search for other piston aircraft with similar power, prop size, and performance, and try their prop tables if that doesn't work, well, bite the bullet and experiment. The above edits should bring things more in line, then it looks like I must deal with those prop tables they correlate prop speed, pitch angle, airspeed, etc. It seems the pitch is reaching max long before hp/mp/speed, so has exceeded the governed range and further throttle increase causes the prop rpm to increase along with engine rpm. Once I'm satisfied with all this, I am back to the original problem - loss of prop control at high power settings. The Shinden's top speed is at 28k ft and its ceiling is 39k. The F8f, the airfile I'm using as a base, had it set for a miserly 10k ft, I currently have it at 30k ft. (Using this for reference - it's for auto turbos but fluid dynamics do not change.)Ĭritical altitude is next, I know what it means but no idea where to set it in regard to this aircraft (everything I read seems in reference to a normalized boost, not to a supercharged military engine). Now I must convert that boost figure to the required max mp and I should have the basic specs as required by the cfg file. Specs for the Mitsubishi Ha-43 are: 2536ci, 7:1 compression, 2200hp at 2900 rpm with 10.1psi (.69bar) boost 1800hp at 22k ft. Thus when I set the reduction gear to its specified setting I got an increase in rpm my guess (probably wrong) is that FS9 pays no attention to the engine redline and will continue raising engine rpm to match prop settings. Hovering the cursor over the rpm gauge gets a popup blatantly stating "propeller rpm", but it is actually reading engine rpm. a mislabeled gauge (and some erroneous conclusions on my part). ![]() Well, as a result of everyone's help, and that utility, I'm back on track.
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