The hyper engine was a 1930s study project by the United States Army Air Corps (USAAC) to develop a high-performance aircraft engine that would be equal to or better than the aircraft and engines then under development in Europe. The project goal was to produce an engine that was capable of delivering 1 hp/in3 (46 kW/L) of engine displacement for a weight of less than 1 lb/hp delivered. The ultimate design goal was an increased power-to-weight ratio suitable for long-range airliners and bombers.
At the time, no production engine could come close to the requirements, although this milestone had been met by special purpose-built racing engines. A typical large engine of the era, the Pratt & Whitney R-1830 Twin Wasp radial developed about 1,200 hp (895 kW) from 1,830 in3 (30 L) so an advance of at least 50% would be needed. Simply scaling up an existing design would not solve the problem. While it would have increased the total available power, it would not have any significant effect on the power-to-weight ratio; for that, more radical changes were needed.
Several engines were built as part of the hyper program, but for a variety of reasons none of these saw production use. Air-cooled engines from a variety of US companies were delivering similar power ratings by the early 1940s, and the licensed production of the Rolls-Royce Merlin as the Packard V-1650 provided hyper-like performance from an inline while the Allison V-1710 did the same from a US design, one produced as a private effort outside the hyper program.
Other articles related to "hyper engine, engines, engine":
... the United States Army funded the development of a series of high-power engines, as part of its hyper engine series, which it intended to produce on Continental Motors ... Allison's engine became Manufacturer Serial No ... It was the X-4520, a 24-cylinder air-cooled 4-bank “X” configured engine designed by the Army Air Corps and built by the Allison Engineering Company in 1925 ...
... these programs were canceled, and the surviving engines became museum pieces ... Ironically, engines that were not considered under the program the Allison V-1710, Pratt Whitney R-2800 Double Wasp, Wright R-3350 Duplex-Cyclone and Pratt ...
Famous quotes containing the word engine:
“There is a small steam engine in his brain which not only sets the cerebral mass in motion, but keeps the owner in hot water.”
—Unknown. New York Weekly Mirror (July 5, 1845)