IL-40, which is the codification of NATO called "builder" - a Soviet attack jet, developed by Ilyushin Design Bureau in the early 50-ies.
After the Korean War, it became clear that the Soviet Union needs to establish assault aircraft with more advanced at the time of performance characteristics.
The Ilyushin Design Bureau on its own initiative in 1950-1952 years. We conducted a series of studies in which established that the new attack can be obtained, complete with its small, economical, lightweight and powerful enough engines. The technical proposal of the Bureau to establish a double armored attack aircraft arrived at the end of 1951 and 1952 in February, the government decree officially started design work.
Sturmovik IL-40 managed to do in a short time, and in February 1953, the aircraft was sent to the passage of the flight test. The first flight of the IL-40 7.03.1953 makes running a test pilot VK Kokkinaki. By the end of March of the same year began to verify the weapons complex. The crew, headed by VK Kokkinaki went to military training "Faustovo" to check the firing range of the gun mount on ground targets.
During the opening fire speed aircraft engines began to fall sharply, and after all disconnected. After that, the pilot stopped the shooting, had to restart the power plant and returned safely experienced Il-40 the airfield. In order to solve the problem, on the air intakes placed special nozzles that removal of powder gases in the hand, but the result is not given. Engines still glohli during shooting.
During the tests, the designers decided to HP-23 guns replaced by a more powerful and rapid-TCB-495A. Under these guns it has been specially designed vapor chamber at the same time representing the nose of a stormtrooper. Purpose chamber consisted retraction external gas stream, which formed during the shooting, without passing through the engine air intake. This decision had a positive result: during the shooting with the gun TKB-495A motors IL-40 not disconnected. Cannon fodder unit equipped with the same weapons as the bow. After finishing factory testing, eliminating all defects and replacing the engines, the aircraft was given the State Commission in the Air Force Institute in January of 1954 State tests did not last long and was successfully completed on March already 15. Military pilots have appreciated the good flight qualities IL-40.
In 1956 the plane showed the US delegation at the Kubinka aerodrome. The guests were shocked and said that a similar attack aircraft has neither a single state in the world.
However, this unit does not have a future. Already in April, the government resolution 1956 all the work on the aircraft IL-40 stopped. For the Soviet Army, which passed to equip new weapons, it turned out to be unclaimed.
Attack aircraft replaced the fighter-bomber. In connection with the nuclear threat and the potential build-up of enemy forces it was necessary to focus its resources on the creation of jet bombers and submarines, carriers of the atomic bomb. Based on the opinion of the then military experts that it is appropriate to develop machines that were out of reach of the fire ground troops. This meant that the Il-40 in the ranks of the Soviet Air Force was not needed. Only after 20 years again talking about the need fire support for ground troops attack aircraft.
IL-40 in design - it nizkoplan with swept wings with feathers. The crew was 2 people: a pilot and a gunner. The main power of the aircraft structure - a hull of which took the load off the engine, tail units and bow.
Cabin crew armor, equipped with ejector seat. In the hulls, in addition to the control room, there were also the fuel tanks and part of the on-board equipment. Protection from the oncoming fire front bronestenka provide pilot and an armored windscreen. The cabin is also equipped with hand leaf armor. The sides of the fuselage housed AM 5F engines, air intakes were slightly in front of the wing. The total weight of the armor, mounted on the Il-40, - 1918 kg.
The attack aircraft armament consisted of six HP-23 cannon placed at the bow and stern gun mount IL-K10 with gun HP-23, which is remotely controlled from the cab arrow. Forward guns were overboard, their ammunition - 900 shells. The cavities of the wing are made 4 small bomb bay, intended for placement of bombs weighing 100 kg. In addition, the aircraft was equipped with four holders for external suspension of bombs, which you can hang two bombs weighing up to 500 kg, shells type TRS-TRS-82 or 132 or external fuel tanks with a capacity 1100 liters. IL-40 had normal bomb load 400 kg, and in congested variant is capable of carrying up to 1000 kg bombs.
On board the Il-40 modern equipment, which allows using aircraft day and night, in various weather conditions. Socks wing, stabilizer and fin, engine air intakes were equipped with air-protivoobledenitelyami heat, hot air to the engine which comes from the compressors. Windshield cockpit had electric heating.
Flight and navigation and radio communication equipment of the aircraft represented navigational indicator NO-50I, artificial horizon AGI-1, directional gyro GPI-48, automatic radio compass ARK-5 and compass LGMK-3M, command radio RSIU-3M and connected - SCR-5, intercom SPU -5, radio altimeter RV-2, the marker radio MCI-48P, defendant IFF "Barium", and Nathan, and aerial cameras AFA.
During the conduct of cannon fire, bombing and firing rockets pilot used the red-dot sight PBI-6, which did not allow failure at high altitude and dive. Dropping bombs is automatic thanks to the electric release gear ESBR-3P. Feeding installation equipped with an eye SPB-40. By plane present system, it allows you to shoot bombardment results at any time.
During the development of IL-40 on its base in the future to create several modifications envisaged.
|Aircraft Length m||17.22|
|Wing area, m2||54.10|
|engine's type||2 TRD RD-9V|
|rated||X 2 2150|
|maximum||X 2 3300|
|Maximum speed km / h|
|near the ground||993|
|Practical range, km||1300|
|Combat range, km||400|
|Practical ceiling, m||11200|
|Max. operation overload||5|
|Armament:||Five 23-mm cannon (4 225 from ammunition shells on a single ventral gun carriage, turning in a vertical plane and 1 fodder plant with a gun (200 shells) having a remote control.)|
|Bomb load - 1000 kg (1400 maximum)|
|The bombs and NAR on an external sling.|
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