Anaconda navigator takes forever to load6/22/2023 The developers of the Buran space vehicle programme considered using Mi-26 helicopters to "bundle" lift components for the Buran spacecraft, but test flights with a mock-up showed this to be risky and impractical. Operational history Ī Mi-26 in a military parade over Caracas, Venezuela Buran programme In 2016, Russia started development of PD-12V a variant of the Aviadvigatel PD-14 turbofan engine to power the Mi-26. Deliveries to the Russian Aerospace Forces were continued in 2016, 20. In all, Rostvertol delivered fourteen Mi-26s to domestic and foreign customers in the period 2012‑14 and six helicopters in 2015. Under the 2010 contract, 17 new-production helicopters were delivered by 2014. Eight new-built helicopters were delivered to operational units by January 2012. The contract also covered the production of 22 new Mi-26T helicopters. Contract completion was planned for 2015. The upgraded aircraft is comparable to a new variant, the Mi-26T. Rostvertol, the Russian helicopter manufacturer, was contracted to refurbish and upgrade the entire fleet of Mi-26s serving in the Russian Air Force, estimated to be around 20 helicopters. In early 2019, Russia's state corporation Rostec inked a landmark agreement on developing a 40-ton next-generation heavy helicopter. In July 2010 a proposed Russian-Chinese development of a 33-ton heavy-lift helicopter was announced. Īs of 2016, the Mi-26 still holds the Fédération Aéronautique Internationale world record for the greatest mass lifted by a helicopter to 2,000 metres (6,562 ft) – 56,768.8 kilograms (125,000 lb) on a flight in 1982. A split-torque design is also used in the 5,670 kg (12,500 lb) gearbox assembly on the American three-engine Sikorsky CH-53K King Stallion. The Mil Design Bureau designed the VR-26 transmission itself, due to Mil's normal gearbox supplier not being able to design such a gearbox. The Mi-26's unique main gearbox is relatively light at 3,639 kg (8,023 lb) but can absorb 14,700 kilowatts (19,725 shp), which was accomplished using a non-planetary, split-torque design with quill shafts for torque equalization. The tail rotor has about the same diameter and thrust as the four-bladed main rotor fitted to the MD Helicopters MD 500. It is the second largest and heaviest helicopter ever constructed, after the experimental Mil V-12. While its empty weight is only slightly higher than the Mi-6's, the Mi-26 has a payload of up to 20 tonnes (44,000 lb). It is capable of flight in the event of power loss by one engine (depending on aircraft mission weight) because of an engine load sharing system. The Mi-26 was the first factory-equipped helicopter with a single, eight-blade main lift rotor. Īn Aeroflot Mi-26 at the 1984 Farnborough Air Show The helicopter was designed by Marat Tishchenko, protégé of Mikhail Mil, founder of the OKB-329 design bureau. The new design was required to have an empty weight less than half its maximum takeoff weight. Operated by both military and civilian operators, it is the largest helicopter to have gone into serial production.įollowing the incomplete development of the heavier Mil Mi-12 (prototypes known as Mil V-12) in the early 1970s, work began on a new heavy-lift helicopter, designated as the Izdeliye 90 ("Project 90") and later allocated designation Mi-26. The Mil Mi-26 (Russian: Миль Ми-26, NATO reporting name: Halo) is a Soviet/ Russian heavy transport helicopter.
0 Comments
Leave a Reply. |