After four years of closure (from 1949 by 1953 city) OKB P.O. Dry it resumed its activity. And right at the main constructor PO. Sukhoi had two supersonic fighter project: frontline - swept and interceptor - delta wing. Since the swept wing at that time was better studied, than triangular, in a relatively short period of time PO Brigade. Dry released blueprints "Strela" (C-1), on which stood a long spindle-shaped fuselage, Tilt rapidly wings, unusually high gear.
Fighter Su-7 – video
In January 1954 g. It was manufactured layout C-1. After its adoption the Commission to start production of the first prototype. 7 September 1955 g. test pilot AG. Kochetkov raised C-1 in air. spring 1956 g. test pilot VN. Makhalin the first time in the USSR reached speeds 2170 kmh, and he also once landed with engine stopped. In the second instance S-1 test pilot H. Korovushkin rose to a height 19 Ltd. m. Soon it began mass production of fighters.
In the mid-1950s. Soviet Air Force demanded to create a fighter-bomber. By then available rather poor "range" cars first candidate for such a role could be only the Su-7. In March 1956 g. the government issued a decree on the development of the fighter-bomber Su-7 base. The prototype C-22-1 with upgraded engine AL-7F-1 was built on the basis of one of the first production Su-7 to February 1959 g. Significant improvements have undergone weapons system and air intake aircraft, It has been extended forward fuselage with installed anti-surge valves. Internal fuel capacity was increased to increase the flight range, It was provided as the suspension of two fuel tanks (PTB). The first flight of the prototype C-22 test pilot OKB ES. Solovyev performed 24 April 1959 g. Factory testing phase was completed by the autumn. Because of the great interest of the customer tests were conducted very quickly. Completed the program, Plane recommended for adopting.
aircraft serial production, received the official designation Su-7B, began in Komsomolsk-on-Amur 1960 g. (correctly - continued, since improvements were minimal). The first Su-7B received the Air Force units, stationed in the European part of the USSR. 9 July 1961 g. during an air parade in Tushino air already demonstrated production machines. With the growth of the fleet quickly crept up and the curve of accidents. It began the difficult period of development of the car in the army. At first, more than half of flight accidents with Su-7B was due to structural and production defects (Half - due to engine failure).
In accordance with the government decree 1960 g. work began on the installation of the Su-7B powder accelerators and more efficient parachute-braking system. The plane was fully tested by basing on dirt runway in a variety of seasonal conditions and climatic zones of the country, showing excellent takeoff and landing performance. Unfortunately, during the test 18 April 1964 g. killed test pilot OKB AA due to faulty accelerator powder. Koznov. The Su-7 was in service not only in the USSR, but also in many foreign countries. It was used in all of the Arab-Israeli conflict, which he proved to be a quite powerful and survivable aircraft.
Modifications Su-7
Su-7 - the first production version of the fighter-bomber;
Su-7B, BK, BL, BM - fighter-bomber;
Sioux 7UBL - double training and combat fighter;
Sioux 7BKL - fighter-bomber on the ski chassis.
Specifications prefer-Su-7 B
– First flight: 7 September 1955 of the year
– Getting Started: 1960 year
– End of operation: 1986 year (the USSR)
– units produced: 1 848
Su-7 crew
– 1 pilot
The dimensions of the Su-7
– Length: 16,607 m
– Wingspan: 9,31 m
– Height: 4,157 m
– wing area: 34 m²
– Sweep angle of the leading edge: 63°
All Su-7
– empty weight: 8370 kg
– Normal takeoff weight: 11 983 kg
– Maximum takeoff weight: 13 043 kg
– Mass fuel in internal tanks: 2760 kg
Engine Su-7
– 1 × TRDF HE-7F-1
– dry power: 1 × 6800 kgf
– afterburning power: 1 × 9600 kgf
Su-7 Speed
– full speed: 2120 kmh
– Cruising speed: 786 kmh
– Skoropodъёmnost: 9600 m / min
– The length of the run: 1350 m
– path length: 900 m
Range flight Su-7
– 1130 km without PTB
Practical ceiling Su-7
– 15 000 m
Weapon Su-7
– Small-pushechnoe: 2 h NR-30 (by 70 rounds per gun)
– point of suspension: 6
– combat load: 2000 kg
– rockets: 3K or C-C-5 or C-24
– bombs: 2 x 500 kg or 4 x 250 kg or one RDS-4
– Suspended gun pods: UPK-23-250 with the gun GSH-23L and ammunition 250 shells
Photo Su-7
seat KM-1 test on the flying laboratory Su-7U.
