On Tue, 2002-02-26 at 09:51, Arnt Karlsen wrote: > On Tue, 26 Feb 2002 12:29:35 -0500, > David Megginson <[EMAIL PROTECTED]> wrote in message > <[EMAIL PROTECTED]>: > > > Alex Perry writes: > > > > > The position of the elevator is a force balance, consisting of the > > > aero force on the elevator, the aero force on the tab and the > > > muscle force on the yoke. > > > > I'm still not entirely certain that I understand. I know that you > > don't think in terms of absolute yoke position when you're flying, any > > more than I think in terms of absolute steering-wheel or gas-pedal > > position when I'm driving, but perhaps you can verify that this is > > right: if I hold the yoke in *exactly* the same position and move the > > trim wheel, the elevator surface will not move; only the amount of > > force required to hold the yoke in position will change. Is that > > right? > > ..yes. The force changes because will help you, or not, > holding the elevator in that exact position. > > ..also try to think of the trim tab as an "servo rudder". > Here, 'you control the rudder', not the plane. > > ..several (creative) pilots has been able to land airliners > without hydraulic fluid in their control systems, using trim > tab systems as servo rudders (and asymmetric power too), to > save their own and passengers bacon.
Some are still built to work that way following complete hydrauilic failure. > > -- > ..med vennlig hilsen = with Kind Regards from Arnt... ;-) > > Scenarios always come in sets of three: > best case, worst case, and just in case. > > > _______________________________________________ > 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
