David Megginson <[EMAIL PROTECTED]> said: > David Culp writes: > > > > Does anyone know anything about how the radio compass (ADF), > > > upper left instrument should work? I'm not sure yet where the > > > radio controls are (the radio actually sits behind the pilot > > > seat). My biggest problem is not knowing what the second arrow > > > is (the one with two white lines running lenghtwise) and whether > > > or not the dial turns. There is only one knob so I suspect the > > > dial is fixed. > > > > I can't say exactly how the P-51 is set up, but for most airplanes > > the compass card turns, the single needle points to the station > > tuned in nav-radio #1 and the double needle points to the station > > tuned in nav-radio #2. > > Are you thinking of an RMI? >
What information that I am aware of would indicate an "RMI". Correct me if I'm wrong but these RMI units had a dial/card/rose attached to a gyro and thus operated like the gyro compass on the hsi. The large arrow was ADF and the small arrow pointed toward a VOR transmitter. But my understanding is VOR is post-WWII. Of course it is possible that the D/K series was fitted post WWII with these, but I have yet to find a picture of a cockpit not refitted with modern G/A that doesn't have this instrument. One thing that is interesting is that every single photo I've seen (probably 4 or 5 cockpits) always shows the card with North straight up. The arrows are every which way, so it seems odd that the card is always photographed in the same position. Best, Jim _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
