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Pratt & Whitney Canada 5-engined Boeing 747SP spotted on Apron @ YMX
Video shot by Air-Clips.com showing a glimpse of the P&W Canada 5 engined 747SP testbed. Also a favorite, taxing Nolinor B737-200 gravel runner (www.fliegerfaust.com) Ещё...Sort type: [Top] [Newest]
I cannot remember the last time I saw an SP
One would think that the aircraft would need a portside counterweight to balance the extra starboard weight.
That 747 needs an appointment with Dr. Pimple Popper!
Actually that extra engine is what they use when the upper deck separates from the balance of the aircraft like on Star Trek. Of course its only used in emergencies like a Romulan attack.
I have to assume that P&W did their homework on this, but can someone explain to me how this is the optimum location for the "5th engine"? I understand that this is an engine test bed, but that location seems unnecessarily inaccessible.
Rolls Royce has a 747 that is just like this, though the 5th engine is on the other side. GE puts a third engine under the wing on their 747. Like Scott said this puts the engine in clean air, shows the performance on a wing with only one engine, and can be structurally secured in the cabin.
My guess would be that it's the best place to put it because it is out of the way of any disturbances. Forward and high enough that it's riding in clean air.