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This study presents conceptual design and development of a 1U CubeSat satellite named KNACKSAT (KmutNb Academic Challenge of Knowledge SATellite). The minimum requirements of the satellite are that its maximum dimensions are 10 cm × 10 cm × 10 cm and a maximum mass is 1.3 kilogram. The components used are commercial off-the-shelf. The main functions of the satellite include transmitting housekeeping...
Recently, nano-spacecraft are being used in interplanetary missions. To achieve their mission goals, generally, spacecraft attitude should be controlled and stabilized for obtaining scientific data and communicating with ground stations. Reaction wheels (RWs) and thrusters have been utilized as actuators in attitude control systems in a number of interplanetary spacecraft. These actuators are useful...
This paper describes a relative orbit estimation method for the close distance flyby adjacent to small bodies such as asteroids, comets, and natural satellites. Previous studies showed that, in a high-speed relative velocity flyby or a close distance flyby of small astronomical bodies, typical estimation algorithms such as a linear batch processing and an extended Kalman filter are no longer applicable...
This research considers an attitude disturbance torque caused by ferromagnetic substances in a LEO satellite. In most LEO satellite missions, a gravity gradient torque, solar pressure torque, aerodynamic torque, and magnetic dipole moment torque are considered for their attitude control systems, however, the effect of the ferromagnetic substances causing a disturbance torque in the geomagnetic field...
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