Friday, October 14, 2011

Deadly Russian Mil Mi-24

Army and Weapons | Deadly Russian Mil Mi-24 | The Mil Mi-24 helicopter is a great fighter and attack helicopter and a low-capacity troop transport with room for eight passengers. The Mil Moscow Helicopter is produced by Plant and operated since 1972 by the Soviet Air Force, its successors, and by more than thirty countries.

During the early 1960s, it became apparent Soviet designer Mikhail Mil Leont'yevich that the trend towards ever larger battlefield mobility would result in the creation of flying infantry combat vehicles, which can be used for both fire support and infantry transport missions to . The first manifestation of this concept was a mock-up unveiled in 1966 in the experimental shop of the Ministry of Aircraft factory number 329, where Mil was head designer. The mock-up designated V-24 was based on another project, the V-22 utility helicopter, which never have flown. The V-24 was similar in configuration and the UH-1A Huey, [citation needed] with a central infantry compartment that could hold eight troops sitting back to back, and a set of small wings positioned at the top rear of the passenger cabin, which up to six missiles, rockets and a twin-barreled cannon GSH-23L attached to the landing skid.
Mil proposed the design of the heads of the Soviet armed forces, and while he had the support of a number of strategists, he was opposed by some more senior members of the armed forces who believed that conventional weapons were a better use of resources. Despite the opposition, Mil managed to First Deputy Minister of Defense's, Marshal Andrey A. Grechko, convince a panel of experts will consider the matter to convene. Although the panel's opinion was mixed, supporters of the project eventually held sway, and a request for design proposals for a battlefield support helicopter was issued. The development of gunships and attack helicopters by the U.S. military during the Vietnam War convinced the Soviets of the benefits of armed helicopter ground support doctrine, which have a positive impact on progress with the development of the Mi-24 had.
Mil engineers prepared two basic designs: a 7-ton single-engine design and a 10.5-ton twin-engine design, both based on the 1,700 hp Izotov TV3-177A turboshaft. Later three complete mock-ups produced, along with five cockpit mock-ups, so the pilot and weapon station operator positions to be refined.
The Kamov bureau suggested an army version of their Ka-25 Hormone ASW helicopter as a low-cost option. This was considered but later dropped in favor of the new Mil twin-engine design. A number of changes at the insistence of the military, including the replacement of the 23 mm cannon with a rapid-fire heavy machine gun mounted in a chin turret, and the use of the 9K114 Shturm (AT-6 Spiral) anti-tank missile .
A directive was on May 6, 1968 to continue the development of the twin-engine design. The work was under Mil until his death in 1970. Detailed design work began in August 1968 under the codename Yellow 24. A full scale mock-up design has been reviewed and approved in February 1969. Flight tests with a prototype began on September 15, 1969 with a tethered float, and four days later the first free flight was performed. A second prototype was built, followed by a test set of ten helicopters.
Acceptance testing for design began in June 1970, remains 18 months. Changes made in the design-oriented structural strength, fatigue problems and reduced vibration levels. Also, a 12-degree anhedral was introduced to the wings to the plane tends to Dutch roll at speeds over 200 kmh address, and the Falanga missile pylons were moved from the fuselage to the wing tips. The tail rotor was moved from right to left side of the tail, and the reverse direction. The tail rotor is now turned on its side to the front of the plane, in the downwash of the rotor, the tail rotor efficiency increased. A number of other design changes were made to the production version Mi-24A (izdeliye 245) went into production in 1970, obtaining the initial operational capability in 1971 and was officially accepted in the state arsenal in 1972.
In 1972, after completion of the Mi-24, began developing a unique attack helicopter transportation. The new design had a lower transportation (3 troops instead of 8) and was the Mi-28, and that of the Ka-50 attack helicopter, which is smaller and more agile and does not have the large cabin for transporting troops . In October 2007, the Russian Air Force announced it would make her 250 Mi-24 helicopters to replace 300 more modern Mi-28s and possibly Ka-50s in 2015.
The core of the plane was derived from the Mil Mi-8 (NATO reporting name "Hip"): two top mounted turboshaft engines driving a mid-mounted 17.3 m five-blade main rotor and a three-blade tail rotor. The engine gave the configuration of the aircraft distinctive double air intake. Original versions have an angular greenhouse-style cockpit, Model D and later have a characteristic tandem cockpit with a 'double bubble' roof. Other aircraft came from the Mi-14 "Haze". Two mid-mounted stub wings provide weapon hard points, each with three stations, in addition to providing lift. The load-out mix is ​​mission dependent, Mi-24 is responsible for close air support, antitank and air combat operations.
The body is heavily armored and can withstand the effects of .50 caliber (12.7 mm) rounds from all sides, including the titanium rotor blades. The cockpit is a more heavily armored titanium tub and can withstand impact of 37 mm cannon rounds. The cockpit and the crew compartment overpressure protection to the crew in NBC conditions.
Much attention was paid to making the Mi-24 soon. The hull was streamlined and equipped with retractable tricycle landing gear to reduce drag. The wings provide considerable lift at high speeds, up to one quarter of the total lift. The main rotor was tilted 2.5 ° to the right of the fuselage to the asymmetry of lift at high speed counter and provide a stable platform fire. The landing gear was also tilted to the left so the rotor would still level the airplane on the ground, allowing the rest of the airframe tilt to the left. The tail was also asymmetrically on one side to give strength to speed, thereby unloading the tail rotor.
A modified Mi-24B, called A-10, was used in a variety of speed and time to climb world record attempts. The helicopter was modified to reduce weight wherever possible, and under which the action was to remove the stub wings. The speed of a 1000 km closed course on August 13, 1975 of 332.65 km / h is still, like many of the female specific records by the all female crew of Galina and Ludmila Rastorgoueva Polyanskaia. On September 21, 1978, the A-10, the absolute speed record for helicopters with 368.4 km / h over a 15/25 km course. The record stood until 1986, when it was broken by the current record holder, a modified Westland Lynx
Crew: 3 (8 troops or 4 stretchers)Maximum takeoff weight: 12,000 kgSpeed: 335 kmhOperating Range: 450 kmArmament: 12.7 mm Gatling gun, rockets, bombs, rockets x 8