Combination spar and trunnion structure for a tilt rotor...

Details Combination spar and trunnion structure for a tilt rotor... Combination spar and trunnion structure for a tilt rotor...

2009-04-24

2011-12-27

Michener, Joshua J (Department: 3644)

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and helicopter sustained

Reexamination Certificate

active

08083172

ABSTRACT:
An aircraft is equipped with a spinnion coupling an inboard wing to a tilting nacelle. The spinnion is advantageously configured to extend across the nacelle from an inboard junction to an outboard junction, and terminates inside the inboard wing. This provides an efficient lightweight structure to support a nacelle and facilitate tilting of the nacelle. The spinnion, which can be configured to be at least partially disposed within the inboard wing, is advantageously concentric with the tilting axis in order to facilitate tilting of a nacelle. A cross-wing driveshaft can be included, disposed at least partly within the inboard wing, and can advantageously be configured to terminate inside the spinnion at a junction with a miter gearbox. The miter gearbox can be disposed at least partly within the spinnion but more preferably lies entirely within the spinnion, and functions to transfer power from an input shaft to the cross-wing driveshaft.

REFERENCES:
patent: 3797783 (1974-03-01), Kisovec
patent: 4323332 (1982-04-01), Fradenburgh
patent: 5096140 (1992-03-01), Dornier et al.
patent: 6607161 (2003-08-01), Krysinski et al.
patent: 6641365 (2003-11-01), Karem
patent: 2007/0158494 (2007-07-01), Burrage

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