compound helicopter


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compound helicopter

A helicopter with an auxiliary propulsion system which provides thrust in excess of that which the rotor(s) alone could produce, thereby permitting increased forward speeds; wings may or may not be provided to reduce the lift required from the rotor system.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
References in periodicals archive ?
The Defiant is a compound helicopter that is part of the US Army's Joint Multi-Role-Medium Technology Demonstrator program.
Travel Business Review-March 26, 2019-Sikorsky-Boeing SB-1 Defiant compound helicopter achieves first flight
Johnson [4] validated the performance analyses of an XH-59A lift-offset compound helicopter using CAMRAD II (Comprehensive Analytical Method of Rotorcraft Aerodynamics and Dynamics, [5]), which is a comprehensive analysis code for rotorcrafts.
Last year, the Army downselected from four vendors to two--a Boeing-Sikorsky team offering the SB-1 Defiant, a compound helicopter with coaxial rotors, and Bell Helicopter offering the V-280 Valor, a tilt-rotor aircraft.
A highly representative example of the above statement is provided by the compound helicopter parent ("a parent who takes an excessive and overprotective interest in the life of his or her child, esp.
The Mi-38 was originally seen by Mil as a stop-gap, pending availability of the Mi-X1 compound helicopter, which was to have high-speed blade tips and a ducted pusher propeller.
AVX has developed and has patented a unique compound helicopter configuration with coaxial rotors and dual ducted fans that combine proven technologies to achieve greater aerodynamic efficiency, speed, range, fuel efficiency, Hover Out of Ground Effect (HOGE) and utility than conventional helicopters.
You might have, for instance, a tilt-rotor for one requirement; a compound helicopter for another requirement," he said.
Little information is available on the Piasecki Pathfinder IV, a compound helicopter with the company's patented Vectored-Thrust Ducted Propeller (VTDP) at the rear end.
A burgeoning market for unmanned cargo delivery systems and long endurance intelligence, surveillance and reconnaissance (ISR) platforms for the US military has spurred Textron Systems subsidiary AAI to take a major technology stake in compound helicopter start-up, Carter Aviation Technologies.
Bell Helicopter's V-280 Valor tiltrotor and Sikorsky-Boeing's SB-1 Defiant, a compound helicopter with coaxial rotor blades, will make their first flights in 2017.