Julian Foad writes: > The spinning propellor (on c172-3d) needs a bit of work. > > It spins even when the model is parked and the engine stopped. If > pause mode is on, it spins more slowly but still does not stop.
For me, the propellor does stop completely. > With magnetos off but starter engaged, the tachometer shows about > 600 RPM (i.e. 10 revs per second). Yes, I think the tach probably should only read 100-200 rpm while the engine is cranking, before it catches. Maybe Alex (or David) could watch this on their next flight? > The propellor spins at one and a bit revs per second. I think the > propellor is supposed to be directly driven from the engine > crankshaft, but I'm not sure. Yes, the propellor spins way to slowly compared to engine rpm. This might be intentional so that it maintains 'smooth' animation. But, it is maybe just a little noticably too slow ... > The two blades are not twisted relative to each other: one blade is > pushing and the other pulling. I've mentioned this to David M. before, but I'm not sure I communicated this well. He really needs to take a look at a real prop and visualize how it pushes the air as it turns. One of the blades of the prop is definitely angled 'backwards.' > The transparency feature is not working for me, so the propellor > disc suddenly appears as an opaque object. I have applied David > Megginson's plib-smoothing.dif and my plib (from CVS) already > appears to have the equivalent of the transparency patch. That bug > may be the only reason for the following observation: > > The disc that fades in at higher speeds is solid grey for me. It > needs to have a (radial) colour profile that matches the blades, > i.e. mostly black with some red bits. The expected grey appearance > will come automatically when a partially transparent black disc is > displayed over a light background (sky etc.). You need to upgrade to the latest cvs-plib to get a transparent prop. David found a bug/limitation in plib when he was trying to impliment a semi-transparent prop disk. Unfortunately it's there in the stable 1.4.x releases. > But nevertheless it is a nice fun, eye-catching feature. Yes, David did a very nice job on his first crack at it. A few more little tweaks and it will 'perfect.' :-) Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
