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The TAI T929 ATAK 2 is a twin-engine, heavy attack helicopter under development by Turkish Aerospace Industries. The helicopter is designed for attack, electronic warfare and reconnaissance missions in all-weather environments in both day and night conditions.
The project commenced in 2013 when Undersecretariat for Defence Industries signed a contract with the Turkish Aerospace Industries to develop a 6-ton class multi-role helicopter for land operations. [ 2 ] [ 4 ] [ 1 ] Alp Aviation is responsible for production and assembly of landing gear, gearbox and dynamic components, [ 5 ] while Spanish CESA ...
Tandem-rotor helicopters, however, use counter-rotating rotors, with each cancelling out the other's torque. Therefore, all of the power from the engines can be used for lift, whereas a single-rotor helicopter uses some of the engine power to counter the torque. [1] An alternative is to mount two rotors in a coaxial configuration.
He founded one of America's original six helicopter companies (Doman Helicopters, Inc.) after making major contributions to the use of Sikorsky helicopters during World War II. [2] Doman Helicopters' most prominent achievement was the Doman LZ-5 /YH-31 eight-place helicopter, which received FAA certification on December 30, 1955. [ 3 ]
A new deadline in 2020 was established for the 23-helicopter fleet to be in operation. [15] In May 2014, the Navy awarded Sikorsky Aircraft a $1.2 billion contract to build 6 presidential helicopters, designated Sikorsky VH-92. A fleet of 21 helicopters was expected to be in service by 2023. [16]
The CoAX 2D/2R was originally known as the FLIP 2 (Fly In Perfection) and is a derivative of the FLIP 1, a conventional helicopter with a main and tail rotor.[1]The CoAX 2D/2R was designed to comply with the European Class 6 microlight helicopter rules, including the category's maximum takeoff weight of 450 kg (992 lb).
Sikorsky developed the X2 helicopter on a $50 million budget. The design includes expertise gathered from several earlier design projects. The S-69/XH-59A Advancing Blade Concept Demonstrator had shown that high speed was possible with a coaxial helicopter with auxiliary propulsion supplied using two jet engines, but that vibration and fuel consumption was excessive; [2] [3] [4] the Cypher UAV ...
60º–360° audible mass notification coverage over areas up to 14 km 2 (5.4 sq mi) LRAD devices include hand-held devices, as well as those mounted on helicopters, motor vehicles and ships. [5] The parameter "ka", which is the wave number multiplied by the speaker radius, is often used to characterize sound source directivity. For this source ...