Research limitations/implicationsIt takes a long time to obtain the optimum thrust–torque ratio value through the ABC algorithm method.Practical implicationsUsing ABC algorithm provides to improve the value of thrust–torque ratio of an unmanned helicopter. With this algorithm, unmanned helicopter flies...
展开 关键词: AIRCRAFT MANEUVERS FLIGHT CHARACTERISTICS FLIGHT SIMULATION HELICOPTER CONTROL HELICOPTER PERFORMANCE LOADS (FORCES) MANEUVERABILITY PURSUIT TRACKING TARGET ACQUISITION THRUST CONTROL AUXILIARY PROPULSION COMBAT CONTROLLABILITY MILITARY HELICOPTERS TASKS THRUST-WEIGHT RATIO TRADEOFFS 被引量: 1 年份...
relatively heavy in weight and of significant packaging volume. As the rotor system locates the gearbox in an airframe center section, such a weighty and voluminous gearbox system often extends into the aircraft cabin section which may reduce aircraft payload and cabin space to an impractical ...
Furthermore, the engine design goal is to provide a 50% improvement in power to weight ratio. This paper focuses on rig tests to generate data for the gas generator hybrid ceramic thrust bearing and front bearing compartment. The bearing is a split-inner ring ball bearing that runs at 2.4 ...
…or air, a propeller produces thrust owing to aerodynamic or fluid forces acting upon the blades and gives forward motion to a ship or aircraft. In Great Britain the propeller of an airplane or the rotor of a helicopter is commonly called an airscrew. ...
National Key Laboratory of Helicopter Aeromechanics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 2 Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China ...
Airplane - Thrust, Control, Flight: The pilot controls thrust by adjustment of the control levers for the engine. In an aircraft with a reciprocating engine these can consist of a throttle, mixture control (to control the ratio of fuel and air going to t
C. E. Lents [8] defined the normalized energy consumption rate and fuel mass consumption rate to evaluate the influence of system weight, drag, and power demand on aircraft energy consumption. The fuel consumption of the hybrid aircraft was evaluated and the results showed that 1.5% of total...
As is known, the comparatively bigger size (e.g., volume, cross and side area) to inertia ratio typical of airships tends to exacerbate stability and controllability issues, compared to other flying machines [11,12,13,14,15], in turn making flight for this class of aircraft potentially mu...
As is known, the comparatively bigger size (e.g., volume, cross and side area) to inertia ratio typical of airships tends to exacerbate stability and controllability issues, compared to other flying machines [11,12,13,14,15], in turn making flight for this class of aircraft potentially mu...