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183.963  Articles
1 of 18.397 pages  |  10  records  |  more records»
In the article is proposed the design of the rotational-catapult system for take-off and landing of unmanned aerial vehicles and determined the algorithm of its functioning. The features of the rotationally-catapult system operation with horizontal and in... see more

Friction forces acting on rotators may promote their alignment and therefore eliminate degrees of freedom in their movement. The alignment of rotators by friction force was shown by experiments performed with different spinners, demonstrating how friction... see more

A quadcopter has a very nonlinear system characteristic that is in?uenced by unexpected disturbances such as the in?uence of wind that re?ected off the ground when taking off or landing. Therefore, a robust control strategy is needed to improve ... see more

IMU (Inertial Measurement Unit) is very important in navigation and control systems. The MU that has six degrees of freedom consists of three accelerometer sensors and three gyroscope sensors, each placed on three axes (x, y, and z) and orthogonal to... see more

A quadcopter has a very nonlinear system characteristic that is in?uenced by unexpected disturbances such as the in?uence of wind that re?ected off the ground when taking off or landing. Therefore, a robust control strategy is needed to improve ... see more

General solids and composites with any number of heterogeneous parts may be conveniently solved by the subregion-by-subregion (SBS) algorithm, proposed in previous works by the author. Particularly in this paper, options for calculating stresses at b... see more

IMU (Inertial Measurement Unit) is very important in navigation and control systems. The MU that has six degrees of freedom consists of three accelerometer sensors and three gyroscope sensors, each placed on three axes (x, y, and z) and orthogonal to... see more

This paper describes optical axis adjustment technique for an active free space optics transmission system. This system precisely controls the direction of a collimated thin laser beam using a motor driven laser emitting mechanism and ... see more

Along the Central Andes a pattern of vertical axis tectonic rotations has been paleomagnetically identified.Such rotations are counterclockwise north of Arica Deflection (~19°S) and clockwise to the south. Different hypothesisand models have been proposed... see more

1 of 18.397 pages  |  10  records  |  more records»