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The Northrop Grumman XRQ-73 SHEPARD (Series Hybrid Electric Propulsion AiRcraft Demonstration) is an hybrid-electric Group 3 unmanned aerial vehicle (weighting about 1,250 lb (570 kg)) developed by Northrop Grumman. [1] [2]
Northrop Grumman XRQ-73 SHEPARD; Northrop Grumman Switchblade; T. Northrop Grumman Tern; X. Northrop Grumman X-47A Pegasus; Northrop Grumman X-47B
The new design was turned over to the Columbia Aircraft Corporation for development and construction so that Grumman could focus on the production of fighter aircraft for the USN. The aircraft strongly resembles the J2F Duck, except for its monoplane layout, and has been referred to as a "single-winged Duck".
The 561-foot-long submarines will include a new life-of-ship reactor, an electric drive propulsion system and field 16 Trident II D5 ballistic missiles. [ 25 ] Building on the success of the Virginia -class submarine program, NNS is participating in the construction of 12 Columbia -class submarines with Electric Boat as the prime contractor.
Antilles Air Boats was founded in 1963, and provided transport between St Thomas and St Croix in the US Virgin Islands as well as San Juan, Puerto Rico.Antilles Air Boats built up its fleet until it operated 27 aircraft, all propeller driven float planes from World War II which were well suited to the short hops over water the airline specialized in.
The Grumman G-21 Goose is an amphibious flying boat designed by Grumman to serve as an eight-seat "commuter" aircraft for businessmen in the Long Island area. The Goose was Grumman's first monoplane to fly, its first twin-engined aircraft, and its first aircraft to enter commercial airline service.
G-73 Mallard at the Air Zoo. Building on the success of the Goose and Widgeon, Grumman Aircraft developed larger G-73 Mallard for commercial use.Retaining many of the features of the smaller aircraft, such as twin radial engines, high wings with underwing floats, retractable landing gear and a large straight tail, the company built 59 Mallards between 1946 and 1951.
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.