The Ye-152A was an abortive attempt to develop a usable production fighter from the Ye-150 experimental high-speed testbed aircraft. The Ye-152A was powered by a pair of 12,125 lb. st. Tumansky R-11F-300 afterburning turbojets. A pair of wing pylons carried either K-8 or K-9 radar-guided air-to-air missiles. A large intercept radar was housed behind a huge shock cone mounted in the center of the nose intake. The Ye-152 proved to be unsuitable for operational service, and the sole example was destroyed in a fatal crash in 1965.
The second version of the aircraft (E-152A) had two serial engines P11F-300 with maximum thrust of 3880 kg and afterburner - at 5740 kg. By that time, this type of turbojet engine, intended for light front-line aircraft such as MiG-21 and Yak-28, was well developed. The wing of both machines in the initial design stage in terms of its geometric dimensions and design was similar to the E-150 wing. The interceptor E-152A had a red onboard number "152A".
the E-152A wing in its geometric dimensions and design was similar to the E-150 wing, with the exception of changes in the root part behind the second spar caused by the expansion of the engine compartment. The stabilizer arms were also similar to the consoles of the stabilizer E-150, so the overall swing of the horizontal tail was large.
The nose parts of the fuselages of the interceptors were identical. Air intakes of large diameter had a central body - a radio-transparent cone, which, unlike the cone on the E-150, was stationary. The air supply to the engine was not regulated by the extension of the cone, (this system was well worked out on all previous types of experienced interceptors), but by the forward-backward movement of the front ring-shell of the air intake. The mobile shell slid along the outer part of the fuselage moved along the four guides using a hydraulic drive. Depending on the speed of the shell, it was fixed in three positions. Thus, the cross-sectional area of ??the inlet was changed. Both new modifications of the interceptor were designed for suspension of medium-range missiles K-9, but differed in airborne radar stations.
On the plane E-152A with the radar "CP" were associated with a counting and deciding device SRP and autopilot. In connection with the installation of well-worked in the production of engines, this machine was prepared for testing even earlier than the E-150. Her preparation for the flight tests was completed in June 1959. On July 10, the first flight on it was made by GK. Mosolov. Factory tests, completed on August 6, 1960, gave the following results: the maximum speed at an altitude of 13,700 m was 2135 km / h, and on 20,000 m - 2500 km / h, the practical ceiling reached 8,800 m. The altitude of 10000 m was 1.48 minutes, and 20,000 m - for 7.64 minutes. With the pylons, a speed of 1,650 km / h was achieved at an altitude of 13,000 m.
The "heavy MiGs" Ye-150 series proved to be completely successful machines, which for the first time mastered the speeds in excess of 2.5 times the speed of sound. Aircraft reached the static ceiling of more than 22000 m, which told about the possibility of high-altitude interception. New high-temperature aviation materials were used, the technology of production was improved. The experience, obtained by the designers of OKB Mikoyan, made it possible subsequently to create the new heavy interceptor E-155, neglected in the series production and accepted for the armament of air defense aviation under the stamp MiG-25[P].
The MiG-23 was an erroneous designation applied by western intelligence observers to the Ye-152A after the display at Tushino in 1961. 'The World's fighting Planes' 4th Ed. by William Green and published by Macdonald: London in 1964, mentions the MiG-23 Flipper, known today as the Ye-152 as " potentially one of the best current short-range, single-seat all-weather fighters extant, and is presumably intended to form a team in the I.A.-P.V.O. with surface-launched missiles and the longer-ranged Fiddler." It goes on to describe the 'Awl' IR-guided AAM on the pylons and the intake cone was presumed to house a 28" A.I. radar with a range of thirty miles. It mentions a centre-line pylon for fuel tanks and a rocket pack as well.
Flipper was the NATO code name given to an experimental twin-engined interceptor which briefly appeared during the 1961 Tushino flyby. It had the familiar delta-wing configuration of the MiG-21 fighter, but was appreciably larger and more powerful. Since it was assumed at the time that this aircraft was the intended successor to the MiG-21 in Soviet Air Force service, it was thought in the West that the designation of this aircraft was MiG-23, and many publications used this designation for the aircraft. However, the actual designation of this aircraft was Ye-152A, a Mikoyan design bureau number. Since the aircraft never achieved production status, it was never assigned an official MiG designation. The MiG-23 designation was later given to the swing-wing Flogger design.
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