Engines and propulsion.On 7 February 1922 the Navy's Aeronautical aer·o·nau·tic also aer·o·nau·ti·cal adj. Of or relating to aeronautics. aer  o·nau Engine Laboratory completed a 50-hour test run of the Lawrance J-1, a 200-hp radial aircooled engine, left. Radial engines radial engineType of internal-combustion engine used mainly in small airplanes, in which the cylinders (ranging from five to as many as 28, depending on engine size) are mounted in a circle around the crankshaft, sometimes in banks of two or more. would be the norm in naval aircraft for years to come. The evolution of the turobjet engine in the 1940s was the next significant milestone in aircraft engine design. Left inset, McDonnell Aircraft's XFD-1, the first naval aircraft with turbojet turbojet: see turbine. turbojet Jet engine in which a turbine-driven compressor draws in and compresses air, forcing it into a combustion chamber into which fuel is injected. engines, was the prototype for the FH-1 Phantom jet fighter Jet fighter may refer to:
McDonnell also designed the Navy's first twin-engine helicopter, the XHJD-1, right inset. Intended for experimental use in a flight development program and for tactical use in utility and air-sea rescue operations, the helo made its first hovering hov·er intr.v. hov·ered, hov·er·ing, hov·ers 1. To remain floating, suspended, or fluttering in the air: gulls hovering over the waves. 2. flight on 25 March 1946. Bottom photo, on 20 August 1947, Commander Turner F. Caldwell, right, achieved a world speed record in the D-558-1 Skystreak. His record was broken five days later by Major Marion Carl, USMC, left, in the same aircraft. |
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