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Old 09-06-2009
JCoyote JCoyote is offline
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Default Re: FINMECCANICA presents new tilt-rotor aircraft!

OK, here's what has bothered me about the design for the V-22, and likely is a feature shared on this vehicle...

"The proprotors are connected to each other by shafting which maintains proprotor synchronization and provides single engine power to both proprotors in the event of an engine failure."

They place the engines way out on the wingtips but still design it to absolutely require a large shaft transmitting power between them. If you are going to do that anyway, why not move the engines to the center ventral portion of the craft between the wings, and drive the props through a shaft from the middle? 2, 3, 4... however many engines you want could power the shaft and failure of any one engine would be even less problematic than with the current design. And all the components necessary to do this already exist in the V-22, this would end up being less complex and reduce load requirements on some parts. It would also reduce the space/weight requirements on the nacelles and allow them to be better aerodynamically tailored to their jobs.

I mean sure, the engine right behind the prop LOOKS more reliable, but as soon as they started synchronizing them through a shaft and driving power through it, any reliability gains from engine-behind-prop went out the window.
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