mh 47 helicopter

Mh 47 Helicopter - The Boeing CH-47 Chinook is a tandem rotor helicopter designed by the American Vertol Rotorcraft Company and manufactured by Boeing Vertol. The Chinook is a heavy lift helicopter and one of the heaviest western helicopters. His name, Chinook, is from the Chinook people, Native Americans of Oregon and Washington state.

The Chinook was originally developed by Vertol, which in 1957 began work on a new tandem-rotor helicopter called the Vertol Model 107 or V-107. At the same time, the US Department of the Army announced its intention to replace the Sikorsky CH-37 Mojave, a piston-engine helicopter, with a new, gas turbine-powered helicopter. In June 1958, the US Army ordered a small number of V-107s from Vertol under the designation YHC-1A; After testing, it was considered by some Army officials to be too heavy for attack missions and too light for transport purposes. Although the YHC-1A was improved and adopted by the US Marine Corps as the CH-46 Sea Knight, the Army requested a heavier transport helicopter and ordered a larger derivative of the V-107, the Vertol Designation Model 114. As the YCH-1B, the pre-production rotorcraft made its first flight on September 21, 1961. In 1962, the HC-1B was designated the CH-47A in 1962 under the US Tri-Service Aircraft Designation System.

Mh 47 Helicopter

The Chinook has several tools for loading a variety of cargo, including multiple doors along the fuselage, a wide cargo ramp located at the rear of the fuselage, and a total of three external ventral cargo hooks for carrying lower cargo. With a top speed of 170 knots (200 mph; 310 km/h), the helicopter was faster than modern helicopters and attack helicopters of the 1960s when it entered service in 1962, and is still one of the world's It is considered to be the fastest. List of United States. Improved and stronger versions of the Chinook have also been developed since its introduction; One of the most important types to be produced was the CH-47D, which first entered service in 1982; Improvements to the standard CH-47C include improved engines, composite rotor blades, a redesigned cockpit to reduce workload, improved redundant electronic systems and the adoption of advanced avionics and flight control systems. It remains one of the few aircraft produced in the early 1960s—the fixed-wing Lockheed C-130 Hercules cargo plane—that has remained in production and front-line service for more than 60 years.

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The military version of the helicopter has been exported to countries around the world; The US Army and the Royal Air Force (see Boeing Chinook (UK variants)) are two of its major users. The civilian version of the Chinook is the Boeing Vertol 234. It is used by civilian operators not only for passenger and cargo transport, but also for aerial firefighting and support for the logging, construction and oil production industries.

In late 1956, the US Department of the Army announced its intention to replace the piston engine-powered Sikorsky CH-37 Mojave with a new, gas turbine helicopter.

Turbine engines were also a key design feature of the smaller UH-1 Huey helicopter. After a design competition, in September 1958 the Army-Air Force Joint Resource Selection Board recommended that the Army purchase a Vertol-built medium transport helicopter. However, there was no budget for full development, and the Army did not meet the design requirements. Some Army aviation officials thought that the new helicopter should be used as a light tactical transport, intended to perform the functions of the older Piston Piasiki H-21 and Sikorsky H-34 helicopters, and therefore should be 15 Have the ability to carry troops. (a group). Another Army aviation group thought the new helicopter should be able to carry larger artillery and have enough interior space to carry the new MGM-31 Pershing missile system.

In 1957, Vertol began work on a new tandem-rotor helicopter called the Vertol Model 107, or V-107.

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In June 1958, the US Army contracted Vertol to purchase a small number of rotorcraft, designating them the YHC-1A.

Three trials were conducted by the Army to obtain production and operational data. However, the YHC-1A was considered by many in the military to be too heavy for the attack role and too light for the transport role.

Accordingly, it was decided to acquire a heavy transport helicopter and at the same time serve as a necessary tactical troop transport to upgrade the UH-1 Huey. The YHC-1A was improved and adopted by the Marine Corps in 1962 as the CH-46 Sea Knight.

As a result, the Army issued a new order to Vertol for a larger derivative of the V-107, known internally by the company as the Model 114, which it designated the HC-1B.

U.s. Army Special Operations To Receive Nine More Mh 47g Chinooks From Boeing

On September 21, 1961, the Boeing Vertol YCH-1B made its first production flight. During 1962, the HC-1B was designated CH-47A under the US Tri-Service Aircraft Designation System in 1962; Also called "Chinook" after the Chinook people of the Pacific Northwest.

The CH-47 is powered by two Lycoming T55 turboshaft rudders mounted on either side of the helicopter's tail boom and connected to the rotors via drive shafts. Early models were equipped with 2,200 hp (1,600 kW) engines each. Counter-rotating rotors eliminate the need for an antitorque vertical rotor, allowing all power to be used for lift and drag. The ability to adjust lift on both rotors makes it less sensitive to changes in drag, which is important for lifting and lowering loads. When the twin-rotor helicopter is moving in a certain position, weight is added or removed, for example, when soldiers get off the plane or start climbing on a rope, or when another load is lifted. This increases the stability of the single rotor. If one monster is not working, the other can run both routers.

The "size" of the Chinook was directly related to the development of the Huey and the Army's tactical desire to build primary air strikes around the squadron. The military was committed to both the Huey and the Chinook, and this concentration was responsible for accelerating air traffic.

After the helicopter entered service, improved and more powerful versions of the CH-47 were developed. The US military's first major structural leap was the now-common CH-47D, which entered service in 1982. Improvements to the CH-47C include improved fuselages, composite rotor blades, a redesigned cockpit to reduce pilot workload, improved and redundant power systems, an improved flight control system, and improved avionics.

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The latest model of the CH-47F, it features several major upgrades for reduced maintenance, digital flight controls, and is powered by two 4,733 hp (3,529 kW) Honeywell thrusters.

The commercial model of the Chinook, the Boeing-Vertol Model 234, is used around the world to support logging, construction, forest firefighting and oil production operations. In December 2006, Columbia Helicopters received a Model 234 Type Certificate from Boeing.

The Chinook is also licensed to be built by companies outside the United States, such as Agusta in Italy (now AgustaWestland) and Kawasaki in Japan.

A CH-47 Chinook transports the MIKE Force Hurricane Aircat from Dan Phuoc to the Siu Mountains in Vietnam.

Airmen And Soldiers Conduct Joint Training > Air Force Special Tactics (24 Sow) > Article Display

The Army eventually settled on the Big Chinook as its standard medium transport helicopter, and by February 1966, 161 aircraft had been delivered to the Army. The 1st Cavalry Division received an organic Chinook battalion (three Chinook companies) that arrived in 1965, and a separate air company of the 147th Helicopter, arrived in Vietnam on 29 November 1965.

This latter company was initially placed in direct support of the 1st Infantry Division. CH-47 crews quickly learned to mount an M60 machine gun on each door. Sometimes they also mounted an M60 or M2 machine gun to fire from the tailgate.

The best mission for the Chinook in Vietnam was to place artillery batteries in dangerous mountainous terrain that could not be reached by other means and to supply them with large quantities of ammunition.

The 1st Cavalry Division found that its CH-47s were limited to 7,000 lb (3,200 kg) payloads when operating in the mountains, but could carry an additional 1,000 lb (450 kg) when operating near the coast. .

Ch 47d/f / Mh 47e Chinook Transport Helicopter

The initial design of the Chinook was limited by a rotor system that did not allow full use of the installed power, and users were waiting for an improved version that would improve this system.

As with any new equipment, the Chinook presented a major challenge of "customer education". Commanders and crew chiefs should always be careful that eager soldiers do not venture beyond the attractively large cargo compartment. It takes some time for soldiers to become proficient in the use of sling bars.

The Chinook soon proved to be such an expensive aircraft for artillery movement and heavy logistics that it was rarely used as an assault troop carrier. Some Chinook boats were used to evacuate casualties, and due to the high demand for helicopters, they were usually overloaded.

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