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Having a coaxial rotor with blades of polymer results in low inertia both relative to vertical and lateral axes, at 50%–75% as compared to a single rotor helicopter with tail rotor. No tail rotor also means it can perform flat turns at all speeds. A maximum vertical load of 3.5 g combined with low inertia makes the Ka-50 highly agile.
The Kamov Ka-31 (NATO reporting name Helix) is a military helicopter originally developed for the Soviet Navy and currently in service in Russia, China, and India in the naval airborne early warning and control role. As with all Kamov helicopters except the Ka-60/-62 family, the Ka-31 has co-axially mounted contra-rotating main rotors.
The tail rotor has about the same diameter and thrust as the four-bladed main rotor fitted to the MD Helicopters MD 500. [ 6 ] The Mi-26's unique main gearbox is relatively light at 3,639 kg (8,023 lb) [ 7 ] but can absorb 14,700 kilowatts (19,725 shp), which was accomplished using a non-planetary, split-torque design with quill shafts for ...
As there is a low rotor clearance at the aircraft front, it is approached from the rear when the rotors are turning. Due to the limitations of the Ka-26, USSR and Romania agreed under the Comecon trade to build a single-turboshaft engine version, the Kamov Ka-126 , with better aerodynamics and range.
The Kamov Ka-60 Kasatka (Russian: "Касатка", "Killer Whale" [3]) is a Russian medium twin-turbine military transport helicopter under development by Kamov. It performed its first flight on 24 December 1998. The civil version is known as Kamov Ka-62.
The Rotorfly R-30 helicopter is a coaxial helicopter with two two-blade fiberglass rotors. The control rods of the upper main rotor are located inside the shaft which reduces turbulence, It has been described as a hingeless teetering blade mount. [2] The aircraft claimed to be very quiet in general. [5]
The Kamov Ka-92 is part of a program of the newly established Russian Helicopters company, intended to create a new generation of medium-class helicopters capable of cruising at about 500 km/h (312 mph) and flying over a distance of up to 1400 km. Its preliminary design and some specification data were unveiled at the HeliRussia 2009 exhibition ...
The company attempted to stage an IPO on the London Stock Exchange in May 2011, but failed to fill the order book at the expected valuation of $2 billion. [7] [8]In 2011 Russian Helicopters and the Italian company AgustaWestland agreed to establish HeliVert, a joint company, in order to start production in Russia of the AW139 twin-engine multipurpose helicopter.