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#75696
MiG-23B/27 nem volt olyan fontos mint a Szuhoj bombázók, így azok kapták az AL21F-et:
SPOILER! Kattints ide a szöveg elolvasásához!From 1972-1973. factory built 48 fighter bombarding dirovschikov MiG-23B (item 24). Most of the aircraft passed the Air Force, several cars were at the disposal of EDO and LII, where they were used for a variety of tests related to fine-tuning of new systems and components. The reason for the limited edition machine became deficit engines AL-21F-3. To produce them, in addition to Moscow factory "Salute", hooked Omsk Engine Plant them. PI Baranova, but primarily AL-21F-3 went to the Su-17M and Su-24 especially, enjoy special priority. Production volumes were still inadequate, first because of the limited resources and identify defects in the operation of the engines had to be replaced frequently. They never had enough and got to the point that the aircraft in combat units without engines idle. Ultimately, Deputy General Designer GE Lozino-Lozinski insisted on resuming equipping MiG-23B "proven" power plants "of the Union."
By this time, the ICD "Union" brought to an acceptable level of reliability of your engine R29-300 (item 55), and its production is launched at the Moscow factory "Red October" (until 1963 - the plant number 500). In the postwar years, this company produced turbojet engines for VC-1 MiG-15bis and MiG-17, 300-R11F for the MiG-21, and then - R27F2-300 MiG-23. Factory Design Bureau order of the MAP number 175 of 30 April 1966 was renamed TMKB "Union", and became its chief designer KR Hachaturov. That he passed for debugging and improving all the materials on engine family P29-300 configured in the KB-300 under the leadership of SK Tumanskiy.
P29-300 equipped with new 11-stage compressor larger diameter blades with a modified profile of the 1st and 2nd stages, provided that the increase in compression ratio to 13.1, and the air flow rate up to 110 kg / s. Blades nozzle unit 1st stage turbine got convective-film cooling, whereby the working gas temperature before the turbine was raised to 1423K. Full afterburner thrust reached 12 500 kg, and the specific fuel consumption for this mode has been reduced - compared to 2.10 kg / kg-h R27F2M-300 it was 2.0 kg / kg-h.
Engines "Union" serially produced and made available, have been used on the MiG-23M, a long-standing and well-established partnership between the two design bureaus allowed calculated (less than that of the AL-21 F-3, where it was 1.86 kg / kg.h). When cruising at 4,200 kg thrust fuel consumption was 0.78 kg / kg-h, which differed little from the corresponding parameter of the AL-21 F-3 (0.76 kg / kg-h), but at low altitudes by expenditure characteristics of P- 29B-300 inferior competitor. Most of the other "passport data" AL-21, F-3 and R29B-300 were similar, the latter differed even slightly less weight and compact, with smaller dimensions, but was more bulky on the dimension of the afterburner. Repetitive Manufacturing R29B-300 settled on Ufa Engine Industrial Association.
In favor of R29B-300 said it less complicated construction for long life and continuity scheme facilitated the development of the engine as production workers and operating organizations. Are taken into account as an opportunistic interest: new MiG was supposed to export a wide customer and get a couple of standardized by aircraft propulsion - 23rd fighter and fighter-bomber (looking ahead, let's say that this calculation has been entirely justified).
Utoljára szerkesztette: Hpasp, 2016.07.09. 21:23:05