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Attack Aircraft

SU - 39

Crew 1
Entered service in 1996
Dimensions and weight 
Length 21.9 m
Wing span 14.7 m
Height  5.9 m
Weight (normal) 25 - 33.6 t
Maximum take off weight t
Engines
Engines  2 x TDRD AL-35F
Traction 2 x 4 500 kgs
Altitude 18 km
Maximum speed 2 550 km/h
Flying range 4 100 km
Armament
Aviation gun 30-mm gun GSh-30-1
Missiles "Air-to-Air" missiles R-60M, R-73; "Air-to-Surface" missiles Kh-23, Kh-25, Kh-29, Kh-31, Kh-35, Kh-58; 16 x "Vikhr" anti-tank missiles; unoperating missiles S-5, S-8, S-13, S-24, S-25. 
Bombs 3 t (corrected or cluster aviation bombs)

    Multirole attack aircraft SU-39 is rebuilt modern version of SU-25 "Frogfoot" attack aircraft, featuring large combat payload, good low flying maneuverability and opportunity to dodge enemy air defense systems. It recommended oneself as easy to pilot and maintain, cheap and reliable aircraft. It's serial production began in 1996.

In 1984 new variant of attack aircraft SU-25T made it's first flight. Aircraft was intended for precise destruction of tanks, armored vehicles, ships and air targets day and night at all weather conditions and enemy defense counteractions in concentration areas and on the march.

Aircraft was based on two-seat training attack aircraft SU-25UB. Rear cockpit was changed to additional fuel tanks and new equipment. Flying range was increased to 450 km at low altitude or 800 km at high with usual combat load using fuselage and SU-39 cockpit additional  lifting fuel tanks. Four standard 800 or 1150 l capacity fuel tanks can be placed under the wings.

The high aircraft maneuverability enables it at low and average altitudes and speeds to rotate "on its tail" and launch a second attack almost without visual loss of contact with an air and surface target, especially in limited space over the target- in hard accessible forest and mountainous areas, when the use of other strike systems is virtually impossible.

SU-25T has modernised engines R-195 with 10% increased traction comparing with SU-25. Now it reaches 4500 kgs every. This allowed to save high maneuverability notwithstanding on increased weight. Aircrafts maximum weight increased in 2 t. 

Modernized aircrafts board equipment. Main armament control system became optic-electronic sighting system "Shkval" which television view is shown on right upper control board's part. "Shkval" has view angle in 10 degrees with 23x magnification. Observation is made by vizier head in scanning regime. It includes systems used for search, identification, trackfinding target designation for "Vikhr" missiles and weapons with laser guidance system, featuring 0.6 m guidance precision. Pilot makes direct pointing by putting sights mark on targets view and launches missile.

Aircraft is able to attack targets at night or in low illumination by using low-level television sight system placed in container under the fuselage. 

Navigational complex consists from air signal system, inertial vertical course device, radio technical close navigation and landing system, Doppler speed and turning angle measuring device, radio height meter, radio technical long-range navigation system.    

SU-25T has saved from it's predecessor perfect maneuver abilities. It's constructors went even further applying automatic control system which considerably decreases pilot's workload. Automatic became such stages as height control, flight in programmed run threw separate intermediate points, maneuvers in target notifying region, diving attacks and landing process.

Aircrafts radio electronic countermeasure complex allows to cross powerful enemies anti-aircraft defense with a great probability. Main electronic reconnaissance set intended to pinpoint all existing ground, airborne and shipborne radars used for detection and fire-control, operating in 1.2-18 GHz and determine the most dangerous target, its coordinates and distance to it in 30 degrees angle with terrain and 360 degrees in traverse.   

For anti-aircraft defense line crossing SU-25T is able to use active countermeasure station, intended to counteract against modern and perspective radio electronic weapon control systems based on impulse, unremitting or kvaziunremiting irradiation. Station is placed in container hanging on under wing ammunition one of hardpoints.

SU-25T constructors placed in the tale part optic-electronic countermeasure system to defend from missiles based on infrared guidance.

Attack aircraft carries a large nomenclature of precession weapons, including "air-to-surface", "air-to-air" and anti-radar missiles and all nomenclature of cheap and effective means of destruction: 85-250mm rockets, 30mm guns and air bombs up to 500 kg weighing up to 3 000 kg. However, the "Vikhr" anti-tank missile is the main versatile weapon of the SU-25T. The aircraft is armed with 16 such missiles placed into two separate blocks eight missiles each capable of directly hitting a moving tank at a 10 km range featuring up to one meter of reduced armoring, rapid boats, rapid maneuvering helicopters and heavy aircraft

Radio location station allowed to use anti-ship missiles Kh-31A, Kh-35 with active radar guidance. Every modernized attack aircraft can carry 4 anti-ship missiles. 

The unique effectiveness of a combat survival system, providing for a 100 % protection of the pilot and vital parts of an aircraft from 30mm gun rounds and missile splinters and returning the aircraft to its home aerodrome when hit by an Air Defense portable Stinger type missile system. The total weight of combat survival equipment of the Su-39 is equal to 1 115 kg.

Aircrafts SU-25T fitted with new radio location complex "Kopiye - 25" are indexed as SU-25TM. "Kopiye-25" radio location sight system operating in a 3 cm band of electromagnetic waves intended for detection and target designation in "air-to-surface", "air-to-air", modes of operation and in a cartography mode. Navigation aids providing for automatic target approach with up to 15 meter precision irrespective of a flight range. Weather new attack aircraft considerably surpasses serial SU-25 in the middle of 90-ties it got new indexation  SU-39. 

The Su-39 capability to perform take-off and landing with a combat payload on poorly prepared earth runways, including those located in the mountains up to 3 000 m high at sea level and up to 1 200 meters long, thereby making the Su-39 appropriate for combat use in close vicinity to combat actions region ensuring a rapid change of aircraft basing and the rapid delivery surprise blows on the enemy.

 The Su-39 is cheapest and effective attack aircraft of its type. Furthermore it is most undemanding. It can use diesel fuel instead of kerosene and does not require high-skilled maintenance. Pilots of any grade can muster the aircraft. The aircraft boasts a 30 year service life, involving routine repairs of an air frame and engine at home aerodromes.

A group of SU-39 partly armed with "air-to-air" class middle range missiles can successfully in missile combat to any modern fighters especially if SU-39 use new RVE-DE missiles which doesn't require escorting for targets illumination laser or infrared. This factor may determine air combat.


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