PFI 1971 - March - Teams Report
The first meeting of the NTS MAP on PFI was held in the end of March 1971 and it was conducted "in private", ie yet without inviting representatives of the customer. Team Sukhoi Design Bureau to participate in the meeting personally formed General Designer, it included: Pavel Osipovich, I.E.Baslavsky, M.P.Simonov and O.S.Samoylovich. At NTS heard reports TsAGI Deputy Chief of G.S.Byushgens and Deputy Chief NIIAS A.M.Batkova, laid out a vision problem from the standpoint of industrial research institutes MAP. At the same time the part NIIAS based on an analysis of aviation routes abroad for the first time officially announced the idea of a fighter fleet consisting of light and heavy PFI. The "debate" made by the representatives of all three EDO participants of the competition.
OKB Mikoyan reported to the first. Deputy General Designer Gleb Lozino-Lozinskiy, who was at that time head of the topic, presented aircraft project under the name of MiG-29. Preliminary research on the subject of the future fighter were already conducted here for two years, at the same time considered the most different variants of the aircraft. At the initial stage of the project MiG-29 did not even remotely resemble the now well-known fighter of the same name. It was, rather, an interceptor designed for ceiling of 23 km, the maximum flight speed of 3000 km / h at high altitude of 1500 km / h at the ground and practical flight range of 2500 km cruise. Takeoff weight was 25.4 tons at 7 tons of fuel left. Properly formed part of the on-board equipment and the initial requirements for the power plant. After receiving military TOR, the project had been revised downward dimension - take-off weight of the aircraft was reduced to 19 tons. In terms of layout, presented at a meeting of the NTS MAP new version was a classic fighter MiG-25 scheme, equipped with two AL-21F-3 engines, with side adjustable air intakes.
At the second meeting the "Suhovtsy" reported. Pavel Osipovich entrusted the presentation to the head of the projects department O.S.Samoylovich, who presented the Commission a draft integrated T-10 layout. Oleg Sergeyevich made a brief analysis of the program of creation of aircraft the F-15, as the main competitor of the TFIs, then criticized the number of unreasonable provisions of the Air Force TTP and formulated the essence of EDO approach to the creation of a new aircraft. Separately, it voiced disagreement with the position OKB NIIAS the need for a fleet of two types of fighter planes. As justification case is as follows: "We believe that our main rivals in the air combat arena will be F-14 and F-15, having a relatively large range and duration of flight. ... ... Therefore, along with the characteristics of agility, domestic TFIs should have a duration of the flight is not less than the F-15 aircraft. In a duel situation of air combat maneuvering out of the fight almost impossible. If the pilot due to lack of fuel stops maneuvering and try to get out of the fight, he will come under cannon fire (or under attack missiles melee) enemy, or be attacked by missiles "air-to-air" long-range. The gap in the distance with a sharp crossing the speed when leaving the battlefield is unlikely to exceed the range guided missile ... ".
The conclusion was as follows: for a given level of performance characteristics of the TFIs to implement the project is critical to ensure the lowest possible mass flight. This requires: the minimum necessary and a sufficient part of the avionics, a new generation of engine with a minimum specific weight and maintaining a strict weight limits but all levels of cooperation - not only for the creation of aircraft, but also of all its systems. In the present project, the T-10 in the performance of the established boundary conditions (engine specific weight 0.11, the weight of finished products avionics 1,225 tons, the weight of 1.1 tonnes of payload, fuel capacity of 6.6 tons) and the predefined LTH at TTZ, was declared takeoff aircraft weight of 21.9 tons.
From Yakovlev came the Designer General, who presented the project fighter Yak- 45I. The original version of this aircraft was developed a year earlier, to July 1970, in two basic versions - attack aircraft and light tactical fighter. The layout of the machine was a further development of the scheme, in the bureau spent back in the mid-1960s for a Yak-33 supersonic interceptor. Aerodynamic configuration of the aircraft was normal, with the fuselage of circular cross section and a high aspect ratio; complex wing shape in plan, with a large sweep in root and low in the end parts of the stabilizer. Engines such as R53F-300 were installed in nacelles two insulated circular section, placed under the swept wing. Air intakes featured external compression: axisymmetric, adjustable, with a conical central body. From the perspective of the concept, the Yak-33 was very lightweightfighter, with the lowest possible composition of avionics, intended "to protect ground forces from attack aircraft of the enemy and destroy enemy fighters ... in visual visibility", with normal takeoff weight of about 10 tons at fuel reserve 2.9 tons.
It was redesigned by 1971 under the TTZ Air Force version of the fighter, which reported AS Yakovlev, was designated as the Yak-45I. Now the plane was intended "to conduct air combat with enemy fighters and destroy it ... strike aircraft in all weather conditions, day and night." In this regard, on the plane grew composition of the target avionics, respectively increased in size and the aircraft itself: normal takeoff weight is 13.5 tons of fuel stock at about 4 tons.
In general, the meeting was of rather a consultative nature, and, of course, no conclusions had been made because relevant work in all three OKB has only just begun.
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