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Su-11
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Su-11

The Su-11. A photo. History. Characteristics.

 

Creation of the legendary aircraft began to 1957 years when work was carried out to create a unique radar ("Diamond") for aircraft T-3. This phase of construction started with the conflict between the designers and creators of the aircraft station. The decision came quickly: radar installed under the fairing. The plane was created using the arrangements of many other Soviet aircraft engines. There have also been involved engineers and specialists from many other institutes and EDB, in particular a huge role in the creation of the Su-11 played constructors of TsAGI.

The entire program of creation was completed in 1961 year, namely in June. The aircraft, formerly known as the T47-6, performed training flights, and working out the various options LPF. All these experimental flights were made to create a unique fighter. In 61 year there was the first demonstration of the aircraft, and the ninth of July this year has modified T47-8 took part in the air parade in Tushino city.

Su-11 photo

At the beginning of the year 62 unit was officially accepted into the Air Force of the Soviet Union and renamed Su-11. Because of the established radar-RP-11 and missiles R-8M aircraft was marked Su-11-8M. Even a few months before the official adoption of the Air Force plane government decision began to produce commercially. By the end of the year 1962 plane not only had to start changing outdated Su-9, but also increase to 40 combat units. Production began in the Novosibirsk called "product 36».

The first flight of the serial image was made in July 1962 years. Initially, production has developed very quickly, but stopped since the end of October there was a tragedy. Su-11, controlled by Air Force test pilot VM Andreev, because stopping the engine crashed. The pilot was killed. Previously established Su-9 was not a very safe aircraft and pretty much troubled government. And this disaster further escalate the situation around the machines produced Sukhoi. As a result of mass production was suspended.

It was decided to produce aircraft with two engines duplicate type. In this setting the new project fits perfectly OKB Sukhoi T-58D or referred to in the future, Su-15. With Su-11 was decided to hold a great job with not caught flight characteristics as security. The board have built a system of automated control. Total constructed around a hundred machines Su-11, because at that time had a bet on the Yak-28P Yakovlev.

In 1964 year for the first air defense regiment were transferred production Su-11 to replace the old Su-9. They have improved layout and enhanced security. The new aircraft has shown himself quite well. Though it was used and the same military tactics, like the Su-9, yet he was more maneuverable. Zone interception increased.

The structure of the Su-11

The machine is controlled by one pilot. The fuselage is constructed with a semi-monocoque. The power set includes 66 frames, 25 stringers and 5 spars. The service connector is divided into two parts: GCHF, or F-1 (head), and HCHF, F-2 (tail). GCHF in turn is divided into the front compartment (the nose), the compartment of the hermachine cabin and the rear compartment. The symmetrical air intake was equipped with a movable central cone of a two-arm type. The antiseptic flaps (4 pins) are located on the lateral surface of the nasal compartment. The control is carried out due to electrohydraulic system ESUV-1S. The air flow channel is divided into two parts above the cab and again connects behind it. The front and middle compartments of the GCHF are non-dialed. The middle consists of a hermetic cab and a niche of the front chassis support. From the armored block and silicate glass is the protection of the cockpit lantern. Behind it is the instrument equipment, and behind it the first and second fuel tanks.

Su-11 color

The wing is mounted at four points. Top GCHF located electroplaits fairings. HCHF was presented whole unit. The elongated tube occupies most of the internal volume. Below are located the fuel tank and the third chamber of the brake parachute. Brake pads are installed as standard - on the sides.

The tail is composed of a one-piece stabilizer and a keel with a steering direction. The design is riveted. The single-spoon keel consists of a bevel beam, a longitudinal set of stringers and transverse ribs. Forkil is made constructively, combined with the fuselage. The tip of the keel is made of fiberglass, with the pressed mesh antenna RSIU-5. The stabilizer consists of two halves, which rotate along the semiaxis. Both the first and the second half are single-spar, with the front and back walls, ribs and stringing set. The critical speed is increased due to the installation of an outboard load on the flutter. The design of the glider used a variety of materials, from aluminum alloys to steel.

The chassis consists of two main front and additional supports. The front pillar is retracted forward, the main hiding on the sides of the fuselage. The aircraft is an oil-pneumatic cushioning and a wheel suspension linkage. Brake wheel - CT-100 (CT-104), the main - CT-69. Brakes improved by the drive, and mounted on the front bearing damper. Also braking parachute accompanied PT-7, in some versions - PTZ-7B.

Su-11

On Su-11 installed engines TRDFAL-7F-2, which have a positive-effect chamber with a nozzle of two-position type. The launch is made by the turbo starter TS-20B due to gasoline. The control of afterburner is electric, the motor is cable. At subsonic speeds, the ESUV-1S system holds the cone in its retracted form, and on the supersonic it stages it step by step. The fuel system is represented in the form of wing and fuselage tanks with a total volume of 3060 l. Two suspension tanks provide another 1440 l. As fuel used kerosene brand RT, T-1 or TS-1. Special jet protection does not allow foreign objects to get into the air intakes. The fire protection system includes a titanium partition in the area of ​​31 frame and a casing that protects the engine, a fire alarm system and a collector spray fire extinguisher.

The control system is booster, irreversible. The rigid wiring of the USE system is also inherent, and the PH is mixed. Thanks to the connection of spring loading mechanisms, the aerodynamic load is simulated. In the wiring management Su-11 included autopilot AP-28Z-1B with mechanisms RA-16. The hydraulic control of the flaps is performed by a pneumatic emergency release system. The hydraulic system consists of three subsystems: one power and two booster systems. For autonomous power supply of each of them, plunger pumps NP34-1T and NP26-3 meet. The pneumatic system consists of two: emergency and basic. The air conditioning system is responsible for the life of the pilot. There is a special equipment for oxygen supply - KCO-3, which includes the mask KM-30M, cylinders, reducing gears and oxygen devices designation KP-34, KP-27M.

For single-phase alternating current generator meets the CDF-8, and for constant - GS-12T, both refer to sources of power for the Su-11. Flight and navigation equipment includes gyrocompass GIK-1 and ISQ, AGI-1 artificial horizon, altimeter WFI-30, pointer speed Kusi-2500 and Mach number M-2,5. Also present variometer VAR-300, accelerometer AM-10, turn signal ET-53, the clock frequency response.

Su-11 2 photo

Telecommunication and radar equipment includes VHF station RSIU-5, communications equipment, radio compass ARK-10, MCI device-56P, SOD-57M, equipment "Azure" interrogator SRZO-2M, altimeter RV-PA. By the weapon system includes radar RP-11, two R-8M, starters PU-1-8. The structure consists of a conventional variant of R-8MR with radar homing missile R-8MT with a heat seeker.

Su-11 characteristics:



Modification Su-11
Wingspan, m 8.54
Length m 18.23
Height, m 4.70
Wing area, m2 26.20
Weight, kg normal taking off 12674
Weight, kg maximum take-off 13990
Weight, kg of fuel in internal tanks 3440
The capacity of the PTB, l 2 600 x L
engine's type Turbojet AL-1-7 2F
The engine thrust, kgf besforsazhny X 1 6800
The engine thrust, kgf afterburner X 1 10100
Maximum speed km / h 2340
Practical range, km without PTB 1350
Practical range, km from the PTB 1800
Frontier pickup, km 350
Practical ceiling, m 18000
Crew 1
Armament: to 2-x SD-class "air-to-air" K-8M (AA-3).
combat load - 1000 kg
modernized aircraft can carry two containers with 23-mm guns of the CCP-23 on external hardpoints

 

Su-11 (1947g.)

 

Sukhoi Design Bureau is widely engaged in designing experimental aircraft, one of them was the Su-11. He first made a breakaway from the runway spring 1947 years. This machine has been designed as a fighter jet engines.

The history of the Su-11

The main task before the Sukhoi Design Bureau was the creation of the plane, which was supposed to be engines TR-1A, and its transfer to further official tests. The project is planned to be created on the basis of existing Su-9, but the main difference was the change in position of the engine. The new machine motor was attached to the wing rather than under it as in the previous machine. Due to this, designers have completely redesigned wings.

By order of the USSR government plane was to meet the following requirements:

  • 900 reach speeds in km / h, even at altitudes of 5 kilometers;

  • climb in 5 3 kilometers per minute;

  • the maximum height to which the unit may rise, should be 14 kilometers;

  • range should be at least 700 kilometers.

All these designers were to implement in Su-11 until August 47. When developing the project, the aircraft had its own code "LK", as well as the designation Su-11. This machine was completely ready in the middle of the spring of 1947, and in May this machine was delivered to the airfield. The first flight of the Su-11 took place 28 May of the same year. In the air the car stayed 10 minutes, but it was enough to find out the main defects and malfunctions. Designers modified the ailerons, and also extended the nacelles. In addition, it was necessary to slightly change the geometry of the wing in conjunction with the new design nacelles. The Su-11 was first presented to the public in August at the parade of the air fleet of the Soviet Union.

sous-11 1947

Factory tests were terminated in April 48-th. Total research was carried departure 54 21 the total duration of an hour. But due to the fact that the modernization of the engine type TS-1A has not been made, the aircraft did not meet the requested requirements. It is for this reason that the plane was decommissioned in late April 48 years. But on the basis of the Su-11 machine was further developed with the name of the new fighter Su-13.

Brief description of the design of the Su-11

As mentioned earlier, propulsion machinery consisted of two types of engines TR-1. It is an air-jet turbo. Each engine consists of the following component parts:

  • oil cooler, which is a cook with the input komfuzor, through it the necessary air can flow to the compressor of the machine;

  • a jet nozzle;

  • compressor, which had eight steps;

  • combustion chamber design that provides for two stages;

  • gas turbine, whose main objective was acceleration of the compressor and other units of the engine.

The engines were attached to the wing of the aircraft with three fixing points, had hoods, which consisted of three covers and Coke on the rear of the unit. These powerplants develop power only 1,3 tons and is on 200 kilos less than planned. These engines were weak and not always reliable.

With regard to the fuselage unit, it is exactly the same as on the previous airplane of this class. Altered were only wings. Armament machines also completely analogous.

As for the features, it should be noted that the pilot's cabin was completely sealed, which allowed the Su-11 to climb to an altitude of about 13 kilometers. To save the pilot in an emergency situation, the cabin was equipped with a catapulted armchair. To reduce the acceleration during take-off on the aircraft, additional powder charges were installed, which gave great traction during acceleration. When landing braking was carried out wheel brakes on the chassis, and a parachute braking system was installed. As for the fuel system, it was represented by two tanks, in which it was possible to fill 2335 liters of kerosene. The weight of the empty unit was quite large and amounted to almost 4,5 tons.

But this machine is able to achieve great success in the flight characteristics due to the speed in 940 km / h. A machine control at those speeds were not enough quality.

The serial production of Su-11 did not hit due to defects and shortcomings engines, and, in addition, the designers at the time were busy with more advanced aircraft.

 

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