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Il-76 CANDID

The Il-76 Candid entered service with the former Soviet air force in 1974. The wings are high-mounted, swept-back, and tapered with blunt tips and a slight negative slant. Four turbofan engines are mounted on pylons under and extending beyond wings' leading edges. The fuselage is long, round, and tapering to the rear, featuring a rounded nose with radome on the chin. The bottom portion of nose glassed-in. The tail flats are swept-back, tapered, and high-mounted on a swept-back, with the tapered tail fin forming a T.

The IL-76 airframe has an all-metal semi-monocoque structure. The nose tip tapered. Rear cabin is equipped with two large clamshell doors, and a large scalable cargo hold with built-in loading and unloading ramps. Below the cockpit front pilot cabin there are large observation Windows, below cylindrical radome. The wing does not impede the cabin space, and includes a central wing, both wing panels, and two outer wing panels. For static mass balance ailerons, flaps and two to three edge stitch, there are 16 spoilers. Leading edges of the wings are 10 leading edge sew wings as a whole. Military-style tail turret, later part of the tail of a switch to civilian. Cantilever all-metal flat installation angle can be adjusted at the end of the t-tail, on each side of the rudder and elevator trim tab. Integral fuel tank between the wings and outer wing rear spar before total 81830 litres of fuel. There are 4 plug points under the wing military-style, each of 500 kilograms of bombs, flares, flags hanging elastic.

Power unit are four Soloviev Design Bureau D-301M (Russian code D-30K) turbofan engine, lifting respectively on both sides under the wings, a single thrust 117,600 n. Each engine is equipped with a clamshell-style reverse thrust device. The D-30K is a former Soviet Soloviev Design Bureau (now Russian Perm Aeroengine Research and Production Association) D-30 modifications developed by the former Soviet Union on the basis of the first large ducted turbofan engines. Basic D-30KY in 1974, replacing the HK-8-4 engines on the Il-62M passenger aircraft.

The engines feature fixed inlet cones, 26 inlet guide vanes, and 3 stage axial-flow fans driven by the low-pressure turbine. Material is mainly titanium alloys. Attachment shaft spread after this case is located in the lower part of the engine accessories. 11-stage axial-flow compressor and high-pressure turbine-driven by rectangle spline shaft. Level on the power pack. Rotor blade dovetail Tenon connections, the first 2 levels with partial high collars. In addition to axle, rear receiver, 9~11-rotor blade and disc, 10~11-level outside the stator blades are made of steel, and the remaining structure is made of titanium alloy.

Speed 7900~9600r/min, inlet guide vanes can be rotated by the programmed up to 30 angle. In the transition state, 5th grade and 6th grade deflation. In addition, 1th grade rotor blades surrounded by a perforated wall composed of annular Chamber. The maximum speed of 10900r/min. Ring tube-shaped combustion chamber. 12 flame tube, each flame tube is composed of domed head and 8 welding segments, there is a gap between the paragraphs flow of dilution air for the second unit. In the flame tube Central located a single pre-combustion of swirl-type primary nozzle/nozzle. Outer casing wall and culverts with longitudinal joints in order to approach the combustor and turbine guide vane.

There are 7 IL-76 crew, driver's cabin, co-pilot sat side by side at the front, the pilot in the nose below the glass canopy, two rear cargo sit in the cockpit. Machine is equipped with a night takeoff-landing equipment, including automatic flight control systems and automatic landing system. Nose radome is fitted with large-scale meteorological and terrain mapping radar. Cargo size 20 m X 3.46 m X 3.40 m, capable of carrying 150 heavily armed soldiers, or 120 paratroopers; also shipped a variety of military vehicles or equipment. Cargo-rear clamshell doors and cargo bridge, with loading and unloading Rails, rail width can be adjusted. Cabin top 2 electric cranes, lifting 5,000 kilograms per unit. 2 sets of winches, each pulling force of 3,000 kilograms. These random loading and unloading system shortens the airport loading/unloading time, increases the velocity of the aircraft. Cargo is the hermetic type, 10668 m the pressure altitude to 3000 meters height. When necessary, to the cockpit pressurization.

To adapt to a rough front-line airport runway, IL-76 with the low pressure of landing gear systems, as well as during take off and landing phases before and after flying at low speed provides greater lift flaps. Inside the machine is fitted with a winch, cabin top essential handling equipment such as cranes, Rails, convenient loading and unloading. IL-76 has the ability to into a flying hospital. Is hydraulically retractable tricycle-type multi wheel low-pressure tires landing gear, a total of 20 rounds. The nose gear for two pairs of wheels, gas-pressurized shock absorbers, tire sizes 1100 mm up to x330 mm, forward revenue within the fuselage. Each of the two main landing gear with 4 wheels, income on either side of the fuselage fairing, income pillar turned around a timing axle, axle parallel to the body axis, perpendicular to the wheel after income and subject to the direction of flight into a 90 . Tire tire pressure regulation system, flight to 2.6~5.2x105 kPa (2.65~5.3 kg/cm 2) adjustable tire pressure needed. Tire size 1300 mm x480 mm. Hydraulic system includes a servo motor is used to drive the flaps, sewing the wings, landing gear and tail doors, loading platforms, cargo door motors, flight control booster powered by electric pumps, and separated from the Central hydraulic source. After a booster failed, you can manually. Engine-driven electrical system including AC generators and auxiliary power unit driven backup generators, and DC inverter and batteries. On-board power supplies main booster for the flight control system, radio, power supply, electrical equipment and lighting systems.

The aircraft is equipped with a night takeoff-landing equipment, including automatic flight control systems and automatic landing system computers. The nose radome radar meteorological and ground with large graphics. IL-76 fitted with electronic warfare equipment, including radar warning receivers, and chaff-infrared decoy launchers, plug-in electronic countermeasures pods. Several IL-76 modified 2 doors equipped with radar target on 23mm self defense gun. On many civilian IL-76 has the artillery system, this is because the Soviet Union/Russia planned that civilian IL-76 would be used by the military during wartime.

The Ilyushin Il-76 transport clearly appears as a military design. Its high wing and strong landing gear give it the ability to operate from airfields with rough or unpaved runways, while its rear loading ramp guarantees easy loading and even air dropping capabilities. On the military side, both an airborne tanker and an early warning version of the Il-76 have been developed. Some commercial aircraft were modernized to IL-76TD-90VD, starting from 2004, using new engines PS-90 to meet European noise limits. The Il-76 can be found in widespread commercial use as a freighter. Comparable in size to the B707 and DC-8, strong demand for medium sized freighters boosted the activities of the Il-76 after the political opening of the former Soviet Union. Besides CIS airlines carrying both domestic and international freight on Il-76s, the aircraft found also work in Africa, the Far East and Europe. Even British, Swiss and South African airlines are to be found among the carriers operating the Il-76, albeit still under joint-venture agreements with Russian partners. As of 2006, the Russian Air Force had some 200 Il-76s, less than half airworthy, and civilian users in Russia had 108.

The Il-76 is also in use as an airborne tanker, otherwise known as a refueller (Il-78, some 50 were made), and a waterbomber. Its airframe was used as a base for the Beriev A-50 'Mainstay' AWACS aircraft (some 25 were made). Still more applications have been found in Antarctic support flights and simulated weightlessness training for cosmonauts. Beriev and NPO Almaz also developed an airborne laser flying laboratory designated A-60, of which two were built, although little is known about it, as the project is still classified.



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