On Tue, 2002-05-28 at 19:30, Jim Wilson wrote: > Tony Peden <[EMAIL PROTECTED]> said: > > > Just something to file away ... big jets should have a climb mode in > > which the power is regulated to max climb by the autothrottles and speed > > is held with the pitch control. > > Filed it away. But not sure of the purpose of this mode. It'd seem that > pitch control should just hold the selected pitch angle, with the exception of > leveling off gradually when a preset altitude is reached. FlightGear's > current autopilot (that uses pitch to maintain max climb) would be very > uncomfortable to ride in...even if it was smoothed. I suppose one advantage > of a mode like you describe would be to prevent stalls even if the crew falls > asleep.
It's just speculation on my part, but I figure several things play into that. Best climb is usually published in the form of a speed, not an angle. Also, that speed is usually above 250 knots for a jet, so you dial in 250 until you get to 10k (at least here in the US) then dial it up to best climb. Also, the same mode will work for descent as well as climb. On top of all that, speed is just more convenient since ATC instructions are given in terms of speed. > > Best, > > Jim > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel > -- Tony Peden [EMAIL PROTECTED] We all know Linux is great ... it does infinite loops in 5 seconds. -- attributed to Linus Torvalds _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
