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.
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 By the end of the year 1962 plane not only had to start changing outdated Su-9, but also increase to 40 combat units.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 operated by a single pilot. Semi-monocoque fuselage is constructed. Power set includes frames 66, 25 5 stringers and longerons. Operating connector is divided into two parts: GCHF or F-1 (head), and HCHF, F-2 (tail). GCHF in turn divided into the front compartment (the nose portion) compartment of the pressurized cabin and the rear compartment. Balanced intake staffed central cone dvuhskachkovogo movable type. Antisurge flaps (4shtuki) arranged on the lateral surface of the nose compartment. Management is carried out by electro-hydraulic system ESUV-1S. Air flow path is divided into two parts on the cab and connected again after it. The front and middle sections of GCHF nonlongitudinal set. Average consists of the pressurized cabin and nose landing gear niche. From bronebloka and silicate glass is protection canopy. Behind it is instrumentation, followed by the first and second fuel tanks.
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 unit consists of a full-rotary stabilizer and fin to the steering direction. Construction riveted. Single-spar keel consists of a strut beams, a set of longitudinal stringers and transverse ribs. Forkil made constructively aligned with the fuselage. The ending of the keel is made of fiberglass, with molded mesh antenna RSIU-5. The stabilizer consists of two halves which are rotating axis. Both the first and the second half of the single-spar, with front and rear walls, ribs and stringer set. Critical rate increased by installing a flutter remote cargo. The airframe using different materials, ranging from aluminum alloys, steel finishing.
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.
The Su-11 installed engines TRDFAL-7F-2, which have afterburner nozzle on-off type. Run TS-made turbine starter 20B by gasoline. Management afterburner - electrical motor - Lanyard. At subsonic speeds, the system ESUV 1S holds a cone in a retracted and supersonic phases puts it. The fuel system is presented in the form of the wing and fuselage tanks with the total volume 3060 l. Two outboard tank provide another 1440 l. The fuel is kerosene brand RT T or TC-1-1. Special inkjet protection prevents foreign objects get into the air vents. For fire protection systems include titanium bulkhead 31 near the frame and the housing that protects the engine, fire alarm and fire extinguisher spray collector.
Control system - booster, irreversible. Also inherent in the rigid wiring system USiE, RN - mixed. By connecting the spring loading mechanism simulates the aerodynamic load. The control wiring Su-11 included autopilot AP-28ZH-1B mechanisms of RA-16. Hydraulic control is carried out with pneumatic flap emergency release. The structure of the hydraulic system consists of three subsystems: one power and two booster. For self-powered meet each plunger pumps NP34-1T and NP26-3. The pneumatic system consists of two things: emergency and basic. The air conditioning system is responsible for the livelihoods of the pilot. There is special equipment for oxygen - ECC-3, which includes mask KM-30M, cylinders, gears and reducing oxygen equipment designation CP-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.
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.
|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|
|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|
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 had put into the Su-11 47 year to August. When drafting the plane had its own code "LK" and the designation Su-11. This machine was completely ready in the middle of spring 1947 years, and in May of this unit has been delivered to the airfield. The first flight of the Su-11 28 held in May of the same year. The air car stayed 10 minutes, but it was enough to find out the main defects and faults. Designers have finished ailerons and extended the nacelle. In addition, we had slightly changed the geometry of the wing in conjunction with a newly designed nacelles. Apparatus Su-11 first presented to the public in August at the parade Air Fleet of the Soviet Union.
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 features, then there should be noted the fact that the cockpit was completely sealed, allowing the Su-11 climb to a height of about 13 kilometers. To rescue the pilot emergency cabin it was equipped with ejection seats. To reduce the acceleration during takeoff Plane install additional propellant charges, which gave greater traction under acceleration. When planting inhibition was performed on the chassis of the wheel brakes and the parachute system was installed braking. As for the fuel system, it was represented by two tanks, in which it was possible to fill 2335 liters of kerosene. Empty weight machine was large enough and was 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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