نتایج جستجو برای: airship
تعداد نتایج: 298 فیلتر نتایج به سال:
Based on the sparsity of scene (moving target and few scatterers on the same resolution cell), MTD and 3D imaging are investigated by means of compressed sensing (CS) for airship sparse array radar and airborne three-aperture MMW SAR. Based on the sparsity of continuous scene sparse spectrum, sidelooking 3D imaging is investigated by means of CS for airborne cross-track sparse array SAR. Some s...
In this paper control forces and torques automatic distribution algorithms for a vehicle actuators are considered. Base control algorithm is designed by position and path control method for vehicles [1] – [3]. This control algorithm is based on kinematics and dynamics equations of vehicle. Distribution of control forces and torques between actuators is solved by applying of the pseudoinverse ma...
The 12 second flight of the world’s first heavier-than-air powered vehicle in 1904 heralded the birth of a new transport mode. In the days, months, and years following that event, it must have been evident that airplanes had a future, but not its shape and extent. The first propeller driven airship was flown 50 years earlier than the Wright Brothers airplane in 1852. A century and a half later,...
Abstract Background Conventional airship mathematical modeling usually involves six coupled degrees of freedom and two inputs, namely tail thrust. The current study focuses on aerodynamic modeling. model is developed in 3D-space based plane semi-empirical a symmetric airship. depends the main geometrical parameters introduces an optimal shape design objective function established to reduce drag...
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