The development of a military transport plane An-72 STOL (KVP) in OKB O.K. Antonov began in early 1970 g. and it was intended to replace the turboprop An-26. Initiated work on the aircraft, using an unconventional method of increasing lift, he was Chief Designer. "Gas Flow, a high speed flowing from the engine nozzle, will take over the wing, creating extra lift "- so vividly described O.K. Antonov feasibility of such solutions for future cars. This method is based on the so-called Coanda effect, zapatentovannom in 1932 g. and bearing the name of the author.
An aircraft-72 – video
At the initial stage of the development was carried out on its own initiative by the bureau and was supported by the Chief of the Air Staff. After review and approval Air and MAP topic easy front-line transport aircraft has been included in the bureau work plan. According to the decision of the government of the USSR work on "aircraft 200" (under such a cipher aircraft featured in the project documentation) was launched. Lead designer of the aircraft was YA.G. aquiline. Confidence in the chosen scheme was so great, that other layout options are practically not considered. Externally the aircraft is very similar to the American "Boeing» YC-14, although he O.K. Antonov, speaking of the chosen scheme, I make the point, that the similarities it has arisen for motor protection against ingress of foreign bodies. Yet without the influence of "Boeing" there has not been, the more so, except for the similarity of the scheme, It can be detected and related technical solutions.
Purge aircraft models in wind tunnels confirmed the theoretical calculations. lift growth was quite significant, and in some modes of reaching 20%. In the special field stands studied the interaction of the wing, flap and engine. To increase blown engines surface were taken before the center section, and their gondolas behind shaped, "Smears" exhaust stream over the wing.
An aircraft-72 made by the scheme vysokoplana with highly mechanized wing and T-tail. This scheme still under wind tunnel causes the formation of vortices at the joint between the wing and fuselage according to the angle of attack. When the aircraft flight control it could change, so the tail unit T-shape has been given, and on the sides of the tail of the big crests installed, reduce harmful interference. To ensure directional stability on a plane to install a powerful keel. the aircraft fuselage has a spacious cargo compartment length 9 m, height 2,2 m and width 2,15 m. Large cargo hatch located in the original design of the rear fuselage. Its opening is closed ramp, which can be lowered to the ground for the entry of self-propelled machinery. on roller tables, installed on the floor of the cabin, you can easily move any cargo. The cabin is tight, equipped with an air conditioning system.
Designing "Aircraft 200" progressed rapidly, and at the Kiev factory was already preparing for pre-production. In summer 1977 g. assembly of the aircraft has been completed, and 31 August took the first flight. He piloted by the crew headed by a test pilot VI. Torre. The decision to mass production took, without waiting for the end of the test, are conducted on aircraft plant Kharkov. By plane has been established over 20 world records in different weight categories.
Performance characteristics of the AN-72
– First flight: 31 August 1977 of the year
– years of production: 1982 — 1993
– units produced: 121
AN-72 Crew
– 3-5 man
The dimensions of the An-72
– Length: 28,07 m
– Height: 8,65 m
– wing area: 98,62 m²
Weight AN-72
– empty weight: 19 500 kg
– Maximum takeoff weight: 32 000 kg
An engine-72
– 2 NCOs × D-36
– pull: 2 × 6500 kgf
An 72-Speed
– full speed: 720 kmh
– Cruising speed: 550-600 kmh
– The length of the run: 800 m
– path length: 450 m
Range An-72 flight
– practical range: 2 700 km
– Ferry range: 4 700 km
Practical ceiling AN-72
– 10 100 m
Arming AN-72
– Small-pushechnoe: 23-mm cannon GS-23L container UPK-2-23
– point of suspension: 2
– rockets: blocks the UX-32M on suspension
– bombs: to 100 kg suspension
Photo An-72
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