Method and apparatus for actuating an aircraft nose portion

The present invention relates generally to methods and apparatus for actuating an aircraft nose portion. Some conventional transport aircraft have nose portions that move relative to the rest of the aircraft. For example, the European Concorde supersonic aircraft has a nose portion that droops downwardly during approach and landing to give the pilot increased downward visibility when the aircraft is at a high angle of attack. Other aircraft have nose portions that move to allow access to the interior of the aircraft. For example, the Lockheed C-5 aircraft has a nose portion that swings upwardly to open the fuselage for loading and unloading. Other aircraft, such as those disclosed in U.S. Pat. Nos. 3,150,849; 4,116,405; and 4,379,553 disclose nose portions that swing to the side to allow access to the aircraft interior. However, none of the foregoing designs address the issues addressed by the present invention. A method and apparatus for actuating an aircraft nose portion. The aircraft can have a longitudinal axis and a pitch axis generally transverse to the longitudinal axis. The fuselage can include a pressure bulkhead and a pressurized payload portion aft of the pressure bulkhead. The nose portion can be positioned forward of the pressure bulkhead and can be changeable from a first configuration to a second configuration while the pressurized payload portion is capable of being pressurized relative to a region external to the aircraft. For example, the nose portion can be inclined upwardly relative to the longitudinal axis when pivoted from a first position to a second position. Accordingly, the length of the aircraft can be reduced, for example, to accommodate the aircraft at a loading gate or other ground support area.