On Wed, 2003-12-24 at 17:53, David Megginson wrote: > Tony Peden wrote: > > > Airliners aren't that sluggish ... the flare is initiated below 50 ft > > AGL and that is definitely over the runway. > > I guess that brings us back to the old discussion about round-out vs. flare > (U.S. books seem to distinguish the two). The jets are are nose-high and > slowing about 1/2 mile back, whatever you want to call that, while the > single-engine props are sometimes still nose-low at full approach speed when > they cross the runway threshold.
The nose up attitude is, I suspect, nothing more than a product of the angle of attack needed to fly at 1.3-1.4 times the stall speed. Procedures wise, though, once you are at landing flaps and trimmed on glideslope and final approach speed (which could be at the outer marker) the pilot would, on an ideal day, maintain speed and attitude all the way to the flare. > > > Inertia is a player, but most aircraft do not have large roll moments of > > inertia .. the mass tends to be concentrated close to the roll axis. > > I'm thinking of the effect of inertia on changing the flight path, not on > changing the orientation. I obviously have no real-life experience, but I > imagine that the hard part of an in-air refueling is getting the plane into > the right place relative to the tanker and keeping it there, which involves > modifying the plane's velocity and path of flight rather than simply its > pitch and roll. I understand how velocity affects that (a plane twice as > fast needs twice the time and four times the space to make the same change > in direction with the same load factor), but I don't understand how inertia > plays into it. > All the best, and happy holidays to everyone, > > > David > > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel -- Tony Peden <[EMAIL PROTECTED]> _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
