C2C
Ref the 767. That would seem to be a techno savvy post; forward tilting trucks do keep the Cg within aft limits in landing configuration. The aft Cg can also result in a pitch-up tendency during landing when the spoilers extend - which occurs just prior to the autobrakes taking their sample grab causing the nose to pitch down again. Aft Cg equals fuel efficiency as the horizontal stab needs to supply a counteractive upward force which is additive to lift from the wing (the stab supports some of the aircraft weight so the wing doesn't have to do as much), the disadvantage is a reduction in stability i.e. the aircraft becomes susceptible to over control. Of course C2C, if your question was as to how Cg effected fuel burn then an affirmation as to why the trucks tilt forward hasn't helped much.
Edited for IB57
IronButt. It certainly can be nibbling the edge, ever noticed how touchy the pitch can be at times when landing? Have to push forward once the sink rate has been checked to do a Boeing roll - similar technique but for a different reason when landing the Sky Pig way back in the Simmons' days. All too high tech for me too really, have to confess that I got most of it from the back of a breakfast cereal box.
Last edited by XL5; 6th May 2006 at 05:35.