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#16
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I think the proposal was to lease Rolls Royce RB211-535E4s. They're used on
the 757. Only ever seen one pic of the proposal - does look kind of ...odd! There's also a second proposal being looked at that would replace 8 with 8. Sorry, I don't remember what type of engines would replace the TF-33. Latest word is the 8 engine proposal is a little cheaper and prefered by Boeing. By replacing 2 engines with 1 (with greater total thrust I might add) presents some assymetric thrust problems should an engine be lost during a heavy weight takeoff. Initially the RB-211 proposal included the "auto-rudder" which is currently installed on 757s. This system automatically displaces the required rudder amount for an engine loss. The problem in the BUFF, as anyone who's ever done a 6-engine approach (done with 2 outboard engines on one side in idle) or a 2-engine loss takeoff in the simulator knows, sometimes full rudder isn't enough. The BUFF rudder is just too small. To solve the problem, another automated system was going to be installed to automatically reduce the thrust on the opposite outboard engine *and* increase thrust on the inboard engines. By the time the automated systems were factored in, the cost had gone up by a fair amount. Its still possible we may get 4-for-8, but right now there's more attention on 8-for-8. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
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