Andy Ross writes: > I'm not sure I understand. A given stick position corresponds very > closely to a given angle of attack. If you change the stick > position, the aircraft will "seek" to the new AoA. If you change > the stick position very rapidly, it will seek rapidly, overshoot, > and oscillate.
For anyone who'd like further reading on phugoid oscillations, see http://www.monmouth.com/~jsd/how/htm/aoastab.html#toc106 In a C172, these usually show up (at least for me) as a very gentle up-and-down drift, like the bow of a boat over light swells -- still very annoying if you're trying to hold altitude or airspeed and don't get on top of them fast. For a fast jet trainer, I can easily imagine that things are more dramatic. > Yanking on the stick in a 172 works just fine -- you're only > transiting through a 5-10 degrees of pitch. Yanking the stick back > on the A-4 tries to rotate the aircraft by 20-30 degrees, and is > much less forgiving. That might be overstating the case. Smooth inputs are necessary on a C172 as well, especially if you're trying to stay within small tolerances (i.e. +-5kt airspeed or +-50ft altitude). All the best, David -- David Megginson, [EMAIL PROTECTED], http://www.megginson.com/ _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
