Ryan Larson writes: > This is worded weird. I would word it like this (this is from the diagram > in the FAA instrument rating written exam). > > The glideslope is a beam 1.4 degrees thick. It is pointed 3 degrees up from > the horizon starting at the 1000' foot mark down the runway from the > threshold. At 1300' from the threshold you are at an altitude of 100' above > touchdown zone. If you are off the GS by 2 dots at the 1300' mark you are > off by 28' (so either 72' or 128' above the touchdown zone). If you are > 5.6nm from the threshold (the Outer Marker) and you are off by 2 dots you > are off by 420' up or down. The target altitude at that point is 1500' > above the touchdown zone. > > Here is a table of what 1 dot or 2 dots mean at different distances. > > Distance from threshold Target Alt 1 Dot off 2 Dots >off Significance > 1300' 100' 14' 28' > Inner Marker > 2600' (1/2nm) 200' 28' 56' > Middle Marker > 1.9nm 500' 70' 140' > 5.6nm 1500' 210' 420' > Outer Marker
The flight gear code cares about the deviation from the glide slope in degrees. The instrument panel code translates this difference into needle movement. Would someone with cvs access (base package and src code) be willing to test drive the most recent changes and double check that they are correct? Thanks, 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
