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Douglas D-558-3 Skyflash. In early 1950's, a several high-speed flight researches were being proceeded by different agencies, the NACA's hypersonic research, the Air Force's Project 1226 and the Navy's D-558 program. In 1954, Langley team of NACA gathered those similar researches from military services and aerospace industries, combined with the Air Force and Navy to launch the new 'Project 1226' competition. As Navy liked to ...
Convair XP-81 In 1943, USAAF issued a specification for a long-range jet powered fighter which could be flight across the Pacific to escort bombers to Japan. Consolidated Vultee Aircraft (Convair) responded with the new design which was powered by a combination of the turboprop and jet engine units, while Navy was also working on the same theory with the Curtiss XF15C-1 and the Ryan FR-1. The configuration was a nose mounted t...
Bell XV-15 Tiltrotor. In 1965, U.S. Army issued a proposal request for an aircraft that would have both helicopter and airplane characteristics to replace the Boeing CH-47 helicopter and C-7 transport. Bell submitted the tilt-rotor design but the request was dropped in 1968. Bell decided to continue the development as the civil VTOL transport. In 1970, a full size rotor and rotating mechanisms were tested at the NASA wind tunn...
Northrop M2-F2 First powered Lifting body. In 1957, NASA had investigated the problems associated with re-entry from space of missile nose cone. Engineers conceived the lifting body idea that by modifying a cone shape, aerodynamic lift could be produced to fly back from space rather than plunge to the earth. This study led to the design known as the M-2, a 'M'odified half-cone, rounded on bottom and flat on top, with twin tail...
Bell X-22 Tilting ducts VTOL experiment. During early 1950s, Bell Aircraft began studying conventional propeller and jet design. In 1957, Bell signed contract from Navy for design of ducted propeller assault transport with VTOL capability. This study also caught attention of the Air Force, Marine Corp and Army, and joined for study during 1959. In 1962, Bell and Navy signed contract for the new test-bed, designated X-22. Its d...
Ilyushin Il-40 'Brawny' original Prototype with short intakes. Two-seat Soviet jet-engined armored ground-attack aircraft. The first prototype flew in 1953 and was very successful except when it fired its guns, as their combustion gasses would disturb the airflow into the engines and cause them to flameout or hiccup. Remedying this problem took over a year and involved the radical change of moving the engine air intakes all th...