Saturday, October 8, 2011

Russian Aircraft Increasingly Sophisticated


This bit of history about the state-owned su 7 russia with developments on the plane flight over the years increasingly sophisticated

Sukhoi Su-7 is a single seat attack aircraft that old standard tactical fighter-bomber with the Soviet Air Force. Development of the Su-7 began in early 1950. The first prototype, called S-1 "Strela" made its first flight in 1955. Su-7 was unveiled to the West on the screen 1956 Soviet Aviation Day in Tushino airport outside Moscow. The prototype came out very promising and Su-7 into production a few years later, with modifications including the Su-7B and Su-7BKL. Aircraft exported to Czechoslovakia, Poland, Romania, China and other countries.

Su-7 is equipped with two 30mm NR-30 guns in wing roots, each with 70 rounds. Under wing-mast allow two 742 kg or 495 kg bombs or rocket pods of two. Wing mid-to low-mounted (wings are mounted below the center plane) with wide wing roots, swept-back, and tapered with blunt tips. There is one machine in the body. There is a circular air intake in the nose and exhaust, a single large. The aircraft is a body, a long tube with a blunt nose and rear. There is a canopy, a large bubble. The tail is swept-back and has a tapered tail fin with blunt tip. It has swept back and tapered flats to low-mid mounted on the aircraft.

On May 14, 1953, on orders from the MDI No. 223, PO Sukhoi was appointed to replace VV Kondratyev as Chief Designer of OKB-1 design bureau, which had been founded the year before to copy the U.S. F-86 "Sabre" fighter. With MAI Order No. 135 of October 26, 1953, the OKB-1 design bureau was assigned a branch plant No. 155 (former plant MAI No 51) for use as production facilities.

In November 1949, a resolution canceling the Design Bureau, are not raised until May 1953, when it was founded with a new production facility. Design Bureau got a new lease on life with the advent of supersonic jet flight. That's why large projects the design team at an early stage is a supersonic fighter S-1 and T-3. In the summer of 1953, the Design Bureau was involved in designing supersonic fighters in two configurations: swept and delta wing (called the letter "S" and "T" respectively, the letter "T" indicates treugolonyi wings, or delta-shaped). Officially, the go-ahead for the job given by the government's decision August 5, 1953. S-1 provided a platform for the family of fighter-bombers, Su-7 and Su-17, and more than 20 versions of them, with Su-17 became the first Soviet aircraft with variable sweep wings.

Conceptual design for a front line fighter wing sweep (version S-1) pass through the preliminary design review in November 1953, and a mock-up committee to review in February 1954. Six months later, in August 1954, swept-wing fighter / interceptor (S-3) also passed the design review, but it works on a version that was stopped shortly thereafter.

The design of the plane S-1 and the system incorporates numerous innovations: a wing with 60 º sweep ¼ bisecant line, all the moving CS, adjustable nose axial air intake, new high-performance AL-7F turbojets (developed by the design bureau OKB -165) with power projected afterburning thrust of 10,000 kg, with a hydraulic system operating pressure of 210 kg / cm ², power control systems, dual-chamber booster, seat-ejection proprietary design, and other features.

The prototype was built in June 1955, and sent to the FRI on the night of July 15. S-1 flight-test team of leading engineers led by VP Baluyev. AG Kochetkov from GNIKI appointed as a leading test pilot under an agreement with the Air Force as a Design Bureau is not in-house pilots who have not. On July 27 conducted the first gliding flight, with its inaugural flight took place on September 7, 1955. The first phase of testing is done using the engine manufacturer AL-7 (ie, without afterburning AL-7F) and was completed in January 1956, a total of 11 flights that have been done. Beginning in March 1956, the VN test GNIKI Makhalin continue S-1 testing with the AL-7F operational.

At that time, the Design Bureau OKB-155 (AI Mikoyan General Designer) has begun testing the first prototype of the future of the MiG-21. MAI leadership, in an effort to showcase the new aircraft from the high country, secretly encouraging competition between the two design bureaus. The first is to "create" is the Sukhoi Design Bureau PO: on June 9, S-1 flight test record the speed of 2070 kilometers per hour flight, which 270kph higher than the performance requirement (PR)! As a result, a government decree June 11, 1956, ahead of the government testing, putting the plane into small-batch production at the plant No 126 in Komsomolsk-on-Amur under the designation Su-7. On June 24, 1956, together with other new aircraft from the Soviet aviation, S-1 publicly unveiled on the traditional air display at Tushino. Construction of the second prototype, S-2, was completed in fall 1956, with flight testing beginning in October.

Formal testing of the Su-7 began in September 1956 and continued, on and off, until December 1958. The main problem is that performance is very unreliable engines AL-7F. This is specifically the cause writeoff of the first prototype on 23 November 1957 and resulted in the death of Air Force pilot GNIKI IN Sokolov. As a result, AL-7F Su-7 variants have a limited production run, has been recommended for garments aircraft with upgraded versions of the machine, AL-7F-1. Su-7 fighter front line produced from 1957 to 1960, with a total of 132 aircraft manufactured (production runs from 1 to 12). The first series Su-7 put into operational service in the summer of 1959 with combat regiment stationed at the aerodrome Vozdvizhenka. In 1959-60, the regiment was used for testing aircraft services. Su-7 fighters in service with the Soviet Air Force and the ADF in the Far East until 1965.

A Su-7B fighter-based two-seat trainer aircraft developed by the Bureau of Design in 1962, but by using a branch-based Design Bureau in the production plant Komsomolsk-on-Amur to build it, it took a long time to finish: The first prototype aircraft, U22- 1, no flight-tested until October 25, 1965, with trial design agency Ye.K. Kukushev in control. Manufacturer of aircraft test was conducted under a tight schedule, in just two months, with the official test was completed in May 1966. Two-seat Su-7U trainer produced from 1966 to 1972, with an export version, the Su-7UMK, produced during the same period. Interestingly, Su-7Us sent not only to the Air Force regiment armed with the Su-7, but also for the ADF unit with the Su-9 and Su-15 interceptors in the inventory, as the unit of the latter often suffer from a shortage of two-seaters like the Su-9U and Su-15UT.

A total of 1847 Su-7-type aircraft of all versions and variants created during the production period, with 691 aircraft exported to 9 countries. Su-7B aircraft types that are stored in the Air Force inventory of the Soviet Union until the mid-'80s, with up to 25 fighter-bomber aviation combat unit (FBA) is equipped with the aircraft during the peak period in the late '60 deployment - the early '70s. Beginning in 1977, Su-7Bs to be phased out in the regiment FBA with Su-17 aircraft and MiG-27. Fri Design Bureau and Su-7B used to try some flying laboratory, namely:. 100LDU developed the Su-7U platform to test the system for remote control of T-4 ("100") missile carrier and the Su -27 fighter, and FL for the testing of new Su-7U-based rescue aids.

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