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Su-17

Su-17. A photo. History. Characteristics.

 

Soviet fighter model Su-17 was developed by Soviet designers in 60-ies of the last century. A special feature of this machine was that it is equipped with a wing that could change its geometry. This machine has been recognized both in Russia and beyond its borders. In addition, the aircraft has been used in many international conflicts.

The history of the Su-17

Before the Sukhoi design bureau was tasked with creating a quality fighter that would replace the Su-7. Initially, the designers planned a deep modernization of the machine: improve the system of on-board equipment, machine characteristics during takeoff and landing. Also, the new aircraft is equipped with a variable geometry wing. This technology is built wing was progressive at the time and gave the aircraft excellent performance in the management of the machine.

Su-17 bottom

Chief Designer was appointed an experienced leader and developer NG Zyrin. When designing a new car was designated as C-22I. The first flight of the prototype of the Su-17 1966 made in August of the year. One year later, the aircraft was unveiled at an air show in Domodedovo.

As for the tests, it should be noted that the aircraft showed the best flight characteristics and performance of landing and take-off. Designers managed to reach a greater range of the flight of the machine. The serial production of the Su-17 began with 1969 year under the original designation C-32. And the first Su-17 began to be manufactured from the 70-x of the last century at the Gagarin plant in Komsomolsk. The aircraft was used by the USSR Air Force mainly in the Far East. Production of this machine continued up to 1990 year, during this time 2867 aircraft of the most diverse modifications were produced.

Design features of the Su-17

In 69 year it was made early 12 machines Su-17, which had advanced systems. It was modified and refined fuel system has been installed on the fuselage gagrot, it has increased the number of points, which is attached to the external suspension.

Su-17 garrison

Airframe manufactured using aerodynamic characteristics. As for the wings, they may change the angle of its geometry. The main wing panels can be rotated by the built motors that run on stand-alone hydro systems. To improve synchronization of rotations these motors are connected to the shaft.

The Su-17 equipped with tricycle landing gear system, retractable into the body of the machine. Some versions can be equipped with ski landing gear.

The power plant unit represented by the new engine type Turbojet AL-21F-3, which are reliable and give the car greater traction. Replacing the engine could be done fairly quickly and easily, as the tail part of the fuselage was rented, and the tail is removed and the body.

The main task of the designers was to reduce take-apart from the runway. This problem was solved by the involvement of additional accelerators SPRD, who worked at a gunpowder charge and allowed great acceleration during takeoff. Fuel aircraft was taken in the five tanks that are located in the fuselage of the machine and xenon wings. External suspension Su-17 allows mounting additional fuel tanks or bombs weighing from 100 500 to kilograms.

Su-17 front

Total production of the aircraft was a lot of upgrades and improvements in almost all systems, and has received numerous modifications, which can perform more specialized tasks.

The modifications of the Su-17

The first modification of the Su-17 was the Su-17M. Its main difference was the installation of a new, more powerful engine and some changes in the machine body. It was also modified fuel system and equipment in the cockpit. The aircraft was manufactured for 5 years, 71 76 of the year.

Another modification was the car of the Su-17M2, which had a longer nose, which made it possible to increase the space of the cockpit. But the most important innovation in this machine has been set to progressive laser sight and equipment, which effectively would find purpose and to direct them to the weapons. There was also increased fuel capacity.

Su-17 back

One of the many models and was a scout named Su-17M2R, which was established container with special equipment. The container was attached to the outside of the suspension of the machine.

More specialized machines such as the Su-17 can be considered as research aircraft, which was manufactured for testing a new type of missile. The aircraft could also be armed protivolokatsionnym equipment such as "Blizzard-17».

Newer machines of this class were equipped with digital equipment navigation. Changes were also air intakes that serve to cool the system and BREO.

Recent modifications of the Su-17 were truly magnificent machine that could repel almost any enemy air technique. Due to this, these machines are widely used in exports to other countries.

Features Su-17



Modification Su-17
Wingspan, m  
at min. Sweep 13.70
at max. Sweep 10.03
Aircraft Length m 18.90
Height, m 4.97
Wing area, m2at min. Sweep 38.50
Wing area, m2at max. Sweep 34.50
Weight, kgempty 9600
Weight, kgMaximum takeoff 16280
Engines 1 turbojet engine AL-7F-1-250
Thrust, kgf X 1 9600
The maximum speed, km / hnear the ground 1350
The maximum speed, km / hon high 2230
Ceiling height, m 16500
Flight distance, km 2300
Crew 1
Armament: Two 30-mm cannon NR-30
The combat load - 3000 7 kg hardpoints
SD air-to-air, air-to-surface SD, NUR, bombs (correctable, cassette, nuclear)

 

Su-17 cabin

Modification Su-17



Su-17 the first production version; 1972 was released to a few dozen.
Sioux 17M modification with Turbojet AL-21F3, increased fuel capacity, more sophisticated avionics, expanding the range of weapons and some other changes; produced from 1972 g .;
Sioux 17M2 version with extended on 200 mm forward fuselage, new avionics and an extended range guided weapons; made its first flight in early 1974, at full-scale production was carried out in 1975-79 years .;
Sioux 17M3 M2 further development; installed new sighting equipment, increased fuel capacity; produced from 1976 g .;
Sioux 17M4 an option with a new avionics, non-regulated air intake and some design changes in the fuselage; prototype appeared in 1980, at full-scale production was carried out in 1981-90 years .;
Sioux 17UM Double combat trainer aircraft, equipped with the avionics used on the Su-17M2; prototype appeared in 1975, at serial production was carried out in 1976-78 years .; aircraft design was the basis for the creation of the Su-17M3;
Sioux 17UM3 Double combat trainer aircraft, equipped with the avionics used on the Su-17M3; produced from 1978 g .;

 

Su-17 (1949 g)

 

Su-17 - Soviet fighter pilot, which was created by the Sukhoi Design Bureau in 1949 The aim was to reach its design speed equal to the Mach number M = 1, and performance testing of aircraft at transonic speeds. Plus, the Su-17 could become the prototype of the front shock series fighter with good speed.

The design feature of the aircraft was a detachable nose of the fuselage, which disconnects with pressurized cabin. This approach to the execution team Sukhoi adopted the world's first, followed by their principles the American aircraft such as F-111.

History

Su-17 designed and built according to the program of experimental aircraft 1948-1949 years., Which adopted the Council of Ministers of the USSR 12.06.1948. It is supposed to release two versions of the fighter: a pilot and combat. In combat variant planned installation of two guns N-37.

Su-17 (1949 g)

In December, the government 1948 prototyping Commission had approved the layout and preliminary design of the fighter, almost completely agreed structural materials production. The comments that have been made are taken into account in the further stages of design and construction of the aircraft, which was carried out based on the precise calculations and experimental data.

After the crash of the Su-15 on flight tests of Su-17 banned. In November, there was a disbanding 1949 OKB. P. Sukhoi. The prototype that never once has not been raised to the sky, was taken in the Summer Research Institute named after Gromov for ground tests, in particular verification of the forward fuselage. Further checks were carried out on the stability of the device, exposing it to fire from aviapushek.

Design

The pilot version of the Su-17 - midwing-metal with a crew of 1 person.

The fuselage is made of semi-monocoque type of circular cross section, which is divided into 3 parts: nasal discharge, middle, tail.

The forward fuselage (LPF) Occupation: frontal air intake branch into 2 air channel of the equipment and the pressurized cabin.

The structure of the power frame LPF consisted of ten primary and seven additional frames, which is attached to the base of the upper part of the canopy and the bottom - to the vapor pipe cannon systems, siding, trim water channels and the cab floor.

Fixing the LPF to the middle part of the fuselage (FES) was due to two castles, which were placed on a frame № 10 in the catapult mechanism (under the floor of the cab). Emergencies provided for disconnecting the LPF from the aircraft. Management process is performed from the cockpit, which housed the trigger. From it was held to a spring wire trigger, which is attachedI to the locks on 10-m frames. Acting on the trigger, first thrust passed on the disclosure of castles, then was driven catapult mechanism. After disconnecting the smooth dive LPF performed parachute mechanism.

Su-17 (1949 g)

The FES placed air channels, which are combined in 17-of the frame, landing gear, a front group of fuel tanks, various equipment, systems and service. The structure of the power frame FES entered 19 frames that were connected 25 stringers, shell and beam power.

The rear fuselage (HCHF) Occupation: elongated pipe of the engine, the rear fuel tanks, brake parachute equipment, brake pads and tail wheel. Joining HCHF and FES made bolting.

Wing-metal, cantilever. It consists of two removable brackets that will dock with FES on a frame № 16, 21, 25.

Joint wing skin to the fuselage passed through contour area. The structure of the frame consoles included: the main spar, stringers, cast socks, extra wall set of ribs and planking. The ailerons were internal compensation. To the left aileron was attached trimmer. Frame ailerons formed from a set of ribs, spars and duralumin skin.

The tail tail is a swept type, it includes a steering wheel and a stabilizer with a height wheel. The keel is composed of two parts. The lower part is made of three spars, a set of ribs, stringers and duralumin plating. It was attached to the HCHF in three places. The composition of the upper keel part is similar, only two ribs were made of wood. In the wooden part there is an antenna of the radio station, the middle and front spars are completely absent, and the rear part is made in the form of a wooden wall. Sheathing of the upper part is made of veneer, the bottom is made of duralumin. To the tail keel, at five points, a steering wheel with weight balancing was attached. The stabilizer was composed of two halves, each of which had a main spar, a pair of auxiliary spars, ribs and skin.

On Su-17 I had the opportunity during the mission to change the angle of the keel incidence. The first prototype of such an operation was carried out only on the ground. The design is similar to the elevator turning the steering wheel. Mounted on each half of the trimmer at four points.

The aircraft has a tricycle landing gear with nose wheel. Key support was arm-type, had bypass damper and fixed to the fuselage. Retraction of the main landing was carried out by reducing the length of the strut during the turn of the chassis around the top of the head stand. Front support retracts into the fuselage structure at the time of the flight. The landing gear retracted closed shutters, and mechanical interlocks fixed support mechanisms.

In the open position fixation of the front support by a hydraulic and ball, and the main - hydraulic roller locks. The front wheel bearing was installed, the size of 530 230 x mm, and the main - the brake wheel sizes 880 x 250 mm.

Su-17 equipped with a rigid system of control, including the elevator, rudder and ailerons. Management handlebars height and aileron trim tabs electro.

The structure of the hydraulic system includes two independent subsystems: primary and secondary. Mainly involved in the release and landing gear, brake flaps and the flaps, intended to supply additional boosters.

The power plant was a turbojet TR-3 unregulated jet nozzle and extension tube. Remove the engine only by disconnecting HCHF and maintenance can be carried out through the hatches HCHF and FES. Thermal insulation extension tube provided outer casings made of foil and AMC filler. Anti-icing system is subject to periodic supply hot air into the hollow sock. The equipment includes alarm icing.

Fire system included:

  • 4-liter bottle with carbon dioxide;
  • 6 temperature sensors near the fuel tanks;
  • filing with the collector ring2;
  • warning light "Fire".

The composition of the fuel system consisted of two groups of tanks: front (total capacity - 950 L), rear (830 L), pipelines, fire hydrant, filters and pumps swap. The front group consisted of two soft rubber neprotektirovannyh tank and the supply tank with a metal priming pump. Rear group - four metal tanks, which are located around the perimeter of the extension tube.

 

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