Le vendredi 24 juin 2005 à 15:41 +0100, Vivian Meazza a écrit : > Gerard > > > > With Melchior's valuable help I have developed a nasal simulation of the > > > Boost Control and Boost Control Cutout for the Hurricane. This should be > > > committed to cvs shortly. When a preset boost value is exceeded, the > > Boost > > > Control acts to reduce throttle opening. This action can be overridden > > by > > > the Boost Control Cutout which allows maximum boost. The output of the > > Boost > > > Control is smoothed by a low-pass filter selected by Melchior. You will > > > notice an overshoot and some lag if the throttle is opened quickly. > > > > > > To make it work a patch (for cvs/head) is required to YASim - attached. > > A > > > new attribute 'supercharger' has been added to the aircraft config file. > > > When this is true, the attribute 'wastegate' no longer controls the > > > supercharger output. If you want to try the update to the Hurricane, you > > > will need to apply this patch. It will not adversely affect any other > > YASim > > > model, so far as I can tell. > > > > > > Both the nasal and YASim patch are temporary; both will require > > reworking > > > when Andy comes up with his revision of YASim to include the new > > > supercharger code. > > > > > > Any testing would be welcome, although Melchior is doing his best to > > break > > > it already! In particular any feedback on any adverse effects on other > > > models would be good. > > > > > > Regards, > > > > > > Vivian > > > > Do we have the same project, on JSBSim ? > > What must be done for it ? > > I'm not sure where the supercharger stuff is at on JSBSim. Certainly doesn't > have a Boost Control Cutout. I'm not working on it - I've only just begun to > understand YASim. One thing at a time :-). I'm not aware of any requirement > in JSBSim > > Right now I've only researched the RR Merlin in any detail. Enough for our > current range of supercharged models. I don't know if Josh Babcock needs > anything special for the B29. > > V. > > > Thanks, My question could be a question to Jon, Dave, and any JSB specialist. I just wonder, about, the opportunity to get profit of your work for developments on the JSB branch. The properties should be the same on the global FG level. Both FDM ->YASim ->JSBSim with a different "philosophic" approach should give the same end results. > -- Gerard
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