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The helicopter was designated "CH-53A Sea Stallion" and delivery of production helicopters began in 1966. [5] The first CH-53As were powered by two General Electric T64-GE-6 turboshaft engines with 2,850 shp (2,125 kW) and had a maximum gross weight of 46,000 lb (20,865 kg), including 20,000 lb (9,072 kg) in the payload.
Mil V-12 at the Central Air Force Museum. Design studies for a giant helicopter were started at the Mil OKB in 1959, receiving official sanction in 1961 by the GKAT (Gosudarstvenny Komitet po Aviatsionnoy Tekhnike - State Committee on Aircraft Technology) instructing Mil to develop a helicopter capable of lifting 20 to 25 tonnes (22 to 28 short tons).
The AW159 is powered by two 1,362 hp (1,016 kW) LHTEC CTS800 turboshaft engines, driving the rotorcraft's BERP IV rotor blades via a new transmission, increasing the maximum take-off weight by more than 1 ton over the legacy Super Lynx. [3] It is equipped with a new composite tailboom, tailplane, tail rotor, nose structure and avionics suite.
The success of Dryden's M2-F1 program led to NASA's development and construction of two heavyweight lifting bodies based on studies at NASA's Ames and Langley research centers—the M2-F2 and the HL-10, both built by the Northrop Corporation. The "M" refers to "manned" and "F" refers to "flight" version.
That weight exceeded the maximum payload of 9.1 tonnes (20,000 lb) at an altitude of 2,600 metres (8,500 ft) of the U.S. military's Sikorsky CH-53E. [ 4 ] The Mi-26 was located through Skylink Aviation in Toronto , which had connections with a Russian company called Sportsflite that operated three civilian Mi-26 versions called "Heavycopters".
The K-1200 K-MAX "aerial truck" is the world's first helicopter specifically designed, tested, and certified for repetitive external lift operations and vertical reference flight (Kaman received IFR Certification in 1999), an important feature for external load work. Other rotorcraft used for these tasks are adapted from general-purpose ...
In 2015, the joint project with Russian Helicopters grew to 38.2 t (84,000 lb), with a seven blade main rotor and a 5,700 m (18,700 ft) ceiling. In 2016, Avic took control, leaving Russian Helicopters as a supplier, presumably of the transmission. In 2018, maximum weight grew again to 42 t (93,000 lb). [1]
The Harbin Z-20 (Chinese: 直-20) is a Chinese medium-lift utility helicopter produced by the Harbin Aircraft Industry Group (HAIG). It was first flown on 23 December 2013 and has a maximum takeoff weight in the range of 10 tonnes (22,000 lb).