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Sioux 25T
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Sioux 25T

The Su-25T. Photo. Story. Characteristics.

 

The product T-8M Sukhoi Design Bureau better known as Su-25T. This machine is designed specifically to destroy armored vehicles, ships, bridges, manpower, as well as any air enemy targets. This combat vehicle can operate in all weather conditions and at any time. Combat missions can be carried out at altitudes of up to 30 5 thousand meters. Optimally, the plane is hot work at a depth of 450 kilometers behind the front line.

The first takeoff aircraft Su-25T model implemented in the summer of 1984 years, and serial production of the car began to 90 years. These machines were produced at the aviation plant in Tbilisi. Sioux 25T first presented to the public in the winter 1991 years in Dubai. For tests at the state level, they have continued to 1993 years. After the tests, the aircraft entered service in the Russian Air Force.

Design features of Su-25T

The aircraft is configured in a single embodiment, and differs from the standard of the original machine that, instead of the second pilot located the fuel tank and the compartment, which houses the radio equipment. Aircraft of this type has been equipped with a new system called the sight "Squall." Since it was located in the forward fuselage, it had to increase it. The changes were made and the location of guns they were moved by the fuel tanks.

Sioux 25T photo

The middle part of the fuselage of the machine is made in the same way as in the previous version. This section includes the engines and air intakes of the machine. The tail section of the machine is equipped with a soft fuel tank and a full range of control systems and radio engineering. The gondolas to which the power unit is attached have been redesigned for new engines of the type P-95SH. As for the wing, it remained the same and was not improved, only the brake shields were changed. On the wings of the Su-25T aircraft, there were five special holders that could carry weapons weighing 1 ton.

Plumage airplanes of two types: horizontal and vertical. With regard to the stabilizer unit, it can be positioned at three positions, depending on the problem, namely the flight mode, maneuvering or runway. Changing the position of the stabilizer is produced by a hydraulic cylinder.

The Su-25T model aircraft has a chassis with three supports, which are retracted into special niches. The front support is slightly shifted to the left, this was done to position the guns. The front pillar has one steerable wheel, which has a protective shield against dirt. As for the supports under the middle part of the apparatus, they are exactly the same as in the previous version of the aircraft, and the wheels are equipped with braking systems. The hydraulic system controls the release and lifting of the chassis. For more effective braking, the aircraft has an additional parachute system, which is located in the tail part of the car. This system is represented by a parachute of the two-dome type.

Su-rocketing 25T

The cockpit is completely sealed and in the middle of a pressure that is 0,25 kg / cm2. This allows the pilot to feel more comfortable and to raise the aircraft to an altitude of 10 thousand meters. The cabin is made of all-welded, it is equipped with a titanium armor that allows the pilot to save even a direct hit 12-millimeter projectile.

All control of the machine is automatic, but the main work in flight is performed by elevator and control rudders, as well as by ailerons. For easier and more comfortable operation, all systems are equipped with hydraulic amplifiers. Regarding the control wiring, it is made according to a rigid scheme, which increases its survivability. But the most important thing in management is that the aircraft has a system that allows for automatic flight. This system type SAU-8 provides stabilization of the machine at the corners and roll, in addition, it is able to stabilize the flight. The airplane can be moved both horizontally and vertically on the machine. This equipment is capable of approaching a landing up to an altitude of 50 meters.

Hydraulic machines differ only in the presence of the booster, which is disposed within the longitudinal bore, together with a control system.

Sioux 25T shark

As for the power plant, it consists of two new turbojet engines of the R-195 type. The engines themselves do not have a afterburner system and are not equipped with nozzle adjustment. The drive box is located under the power unit and is equipped with an electric start which operates from an autonomous system. These engines produce tractive power in 4300 kg. In addition, they have a low level of IR radiation. The nozzles of the machine are equipped with a central body that promotes better cooling by blowing cold air through it, which comes from the air intakes. On the Su-25T aircraft, it is possible to replace engines with other types of R-95S.

The fuel system, through pumps, provides fuel to the power plant regardless of the position of the aircraft in flight. The fuel of the machine is placed in four fuel tanks of the fuselage and one more in the wings of the apparatus. The total capacity of the tanks is almost five tons of fuel. For greater survivability in combat conditions, each engine has its own autonomous tank, and the looped system provides power plant fuel from any tank. To prevent the explosion of tanks, they are at 70 percent filled with polyurethane foam. It is possible to install additional suspension tanks with capacity of 4 tons of fuel for the car's stretches.

To rescue the pilot emergency aircraft such as Su-25T equipped with ejection system, which effectively works in all modes of flight and at any altitude.

Electricity is supplied by generators installed on the engines. The peculiarity is that the aircraft has a system of direct and alternating current, which is used for different systems. Voltage is 115 volts and frequency - 400 Hz. With regard to the lighting equipment, it is similar to the previous version.

Sioux 25T photo

This attack can be considered the pinnacle of design ideas at this time, as his equipment and characteristics are not inferior to the world analogues.

Features Sioux 25T:

  • Crew: 1 people

  • Length: 15,33 m (with LDPE)

  • Wingspan: 14,36 m

  • Height: 5,2 m

  • Wing area: 30,1 m²

  • Weight empty: 9 500 kg

  • Weight normal takeoff: 16 500 kg

  • Weight maximum take-off: 19 500 kg

  • Weight Fuel: 4890 kg

  • Engines: 2h turbojet P-195

  • Link: 2h 40 kN (4 500 kgs)

Sioux 25T photo boothsSioux 25T photo equipment

Armament of the Tu-25T:

Gunnery: dvuhstvolny 30-mm cannon GSH-30 200 with ammunition cartridges (built-in)

Guided Missiles:

  • missiles "air-to-air»: 2 x P 60M; 2-73 x P
  • missiles "air-to-surface»: 16's ATGM "Vihp"; 6 x X 25ML (MT, MR, MP, MPU); 8 x C-25L; 2 x X 29L (T ML, TE, TM, TD); 2 58E x X (Y).

Unguided rockets:

  • Blocks NAR - 8 blocks of B-5 with HAP-5 (256 NAR);
  • 8 blocks of NAR B-8; NAR's C-8 (160 NAR);
  • 8 blocks of NAR B-13L; NAR's C-13 (40 NAR);
  • NAR's 8-24 With B; NAR's C-24 FMR;
  • 8's HAP-25; NAR's C-25 FMR.

Bombs: svobodnopadayuschie and responsive for various purposes, cluster bombs

  • 2 x KAB-500Kp;
  • AB x 10-100; 32-100 x AB in conjunction with the MDB-2-67U
  • AB x 10-250;
  • AB x 8-500;
  • RBC's 8-250;
  • RBC's 8-500;
  • X KMGU 8-2;
  • X ST 8-500;

 

Sioux 25UTG

In connection with the final work on the heavy aircraft carrier cruiser TAKR project 1143.5 called "Tbilisi" (the first of the series) it was decided to create a ship fighter Su-28. But for negative reasons the plane's project was stopped. To replace it with the basic model was Su-25UB. This decision engineers from the Sukhoi Design Bureau accepted after the flight tests in the summer of 1984. The tests were conducted for Su-27 - take-off from the springboard at the base complex "Nitka". Simultaneously they tested Su-25 (T8-4). He showed himself quite well. It was the results of the engineers from the OKB and decided to use it as a base for creating a training deck airplane of training character - T8-UTG, or Su-25UTG.

Su-25

In order to develop a new aircraft identified a serial Su-25UB, lead engineer for flight tests appointed NP Petrukhina. The aircraft collected immediately, taking into account future improvements to strengthen the structure. Serial production was planned to hold an aircraft factory in Ulan-Ude, since 1988 years. In March, the fighter sent its own way on FOX OKB. There it established a hook and calibration ACA. The upgraded model of the sky raised test IV Votintsev.

In October, the aircraft ferried in Salem for a test program with the landing hook for cable arresting gear. All test flights carried VG Pugachev, IV Votintsev, SN Melnikov, EI Frolov, AV Krutov (test LII), AB Lavrikov and AI Fokin (military testers). For the first time T8-UTG1 piloted by test pilots and Votintseva Kruglov, he landed on the deck of an aircraft carrier aircraft carrier "Tbilisi". The entire program of tests for the basing of the ship was carried out on the 1991 1992 year. The ship was moved to Severomorsk.

In Ulan-Ude in 1990, it was created and released copies 12 small production batch of Su-25UTG. They were flown to Severomorsk for the transfer of the Northern Fleet aircraft in the framework of pilot training Sioux 27K. In the period of 1991 1995 year factory gathered another batch of five Su-25UTG. This party was the second and last.

Technical description of the Su-25UTG

The plane is created for pilots taking off and landing on the ground together with short take-off mechanism - an inclined ramp-jumping, the completion of landing - arresting gear and carrying out monitoring of pilots and cadets combat units and flight schools.

Flight performance Su-25UTG almost do not have much difference from the characteristics of the Su-school 25UB. Through installed on the machine equipment air flight and navigation destination is provided by working out off and landing aircraft in all weather conditions for training flights.

Su-25 photo

Sioux 25UTG much similar to the Su-25UB against aerodynamic configuration, the power plant and its systems, dimensions and weight characteristics, equipment, aircraft systems and the airframe structure from the chassis.

The process of training flights Sioux 25UTG is performed tasks Flight Training:

  1. Taking off from the springboard.

  2. Landing on the arrester using a catchy hook.

  3. Study the art of piloting at any time and under any weather conditions.

  4. Making the instrument flight and conducting "blind flight".

  5. Education action in a case when there was an emergency, or simulated failure of navigation and navigation equipment.

  6. Piloting (day and night).

  7. The initial flight training centers and schools.

Combat serial aircraft Su-25UTG has a number of differences from the basic training model. The differences are mainly related to the elements and systems of construction. On Su-25UTG there are no blocks of sighting equipment and weapons control systems, installations with guns, beam holders and pylons, armored screens of engines, radio communication stations, units and elements of the defense system. But at the same time in the tail of the fuselage installed landing hook, which is a hook for braking with side stabilizers and a damper-lift. Attached to the modified tail boom of the fuselage, capable of perceiving loads from the landing hook.

Su-25

Since the parachute brake unit was removed, it was necessary to shorten the ending of the tail boom. Niche, designed for gun mount, sewed (placed at the head end). The second cabin installed a periscope vision of a front (EPP-1), and in the central part of the armored hatches replaced with plates of aluminum alloy. Instead of fighting harvested consoles have built in caps and portholes rangefinder.

When the plane was moved, we decided to retain the ability to install suspended four fuel tanks. Each of them could accommodate 800 l. PTB-800 placed at two under each wing, in view of possible emergency they can be reset.

When the plane takes off from the springboard, it is displayed on the flight values ​​of the angle of attack, taking into account the curvature of the springboard. Due to this, the takeoff run is significantly reduced. Before take-off, the pilot taxies out and puts the aircraft on a detainee, then turns on the maximum engine operating mode and lowers the stabilizer to the take-off position. After the command, the air vehicle is released from the detainee and makes dispersal along the runway towards the springboard. The withdrawal to the take-off position of the angle of attack is carried out after the descent from the springboard, and after three seconds it accelerates to flight speed.

NOSP (ground-optical landing system) is responsible for the process of entering the aircraft in the landing zone. Once in the beam optical system, a pilot with instrumentation takes the machine to reduce the height of a given glidepath. Flying over it is done on the calculated angle of attack delayed maximum speed. The process takes place before the wheels touching the chassis to the runway.

Su-25 in flight

During the landing hook arresting hook slides on top of the runway and clings to the cable arresting gear. After the cable hooks aircraft goes the distance in meters 90 with the largest value of overload during braking (4-5 units).

Application of the Air Force

Earlier, the plane was in service with the Soviet Union and Ukraine. The "advice" aircraft served until the collapse, after which five Su-25UTG went to Ukraine. In 93-handed in their m-th ship 299 Regiment assault destination. In 94 3 year Instance was changed to the Russian Su-25UB and two sold in China and the United States.

At this point the remaining Su-25UTG are in service with the Russian Air Force.

 

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