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The Northrop Grumman XRQ-73 SHEPARD (Series Hybrid Electric Propulsion AiRcraft Demonstration) is an tailless flying wing hybrid-electric Group 3 unmanned aerial vehicle (weighting about 1,250 lb (570 kg)) developed by Northrop Grumman.
USS George Washington Carrier Strike Group underway in the Atlantic USS Constitution under sail for the first time in 116 years on 21 July 1997 The United States Navy has approximately 470 ships in both active service and the reserve fleet; of these approximately 50 ships are proposed or scheduled for retirement by 2028, while approximately 110 new ships are in either the planning and ordering ...
In the United States, all military aircraft display a serial number to identify individual aircraft. These numbers are located on the aircraft tail, so they are sometimes referred to unofficially as "tail numbers". On the Northrop Grumman B-2 Spirit bomber, lacking a tail, the number appears on the nose gear door. Individual agencies have each ...
On 17 December 1996, the U.S. Navy awarded a contract to an industrial alliance led by Northrop Grumman Ship Systems (formerly Litton Avondale), with General Dynamics Bath Iron Works, Raytheon Electronic Systems and Intergraph Corporation, to design and construct the first of an anticipated 12 ships under the Navy's LPD-17 program.
A small number of seaplanes have retractable beaching gear, which is not capable of being used for landings and takeoffs, but these remain flying boats or floatplanes and are not amphibians. Many floatplanes, especially those since 1945, can have either conventional floats for operating just from water, or amphibious floats, which have ...
The Martin P5M Marlin (P-5 Marlin after 1962), built by the Glenn L. Martin Company of Middle River, Maryland, is a twin piston-engined flying boat that entered service in 1951, and served into the late 1960s with the United States Navy performing naval patrols.
The Convair XP5Y-1 prototype in 1950. It first flew on 18 April 1950 at San Diego and crashed in 1953. Convair received a request from the United States Navy in 1945 for the design of a large flying boat using new technology developed during World War II, especially the laminar flow wing and still-developing turboprop technology.
The fuselage is 2 ft (0.6 m) longer aft of the main door, the radome is extended and there is a new curved windshield. Maximum takeoff weight is increased to 68,200 lb (30,935 kg) or 69,700 lb (31,615 kg) and there are various changes to the autopilot, flight instruments, and engine instruments.