Development of Distributed Generic Simulator (GenSim) through Invention of Simulated Network (simNetwork) Cheol-Hea Koo, Hoon-Hee Lee, and Yee-Jin Cheon Satellite Flight Software Department, Satellite Technology Division, Korea Aerospace Research Institute, Daejeon 305-333, Korea Satellite Control System Department, Satellite Technology Division, Korea Aerospace Research Institute, Daejeon 305-...

The electro-mechanical actuators are used in aerospace vehicle is used for attitude control of vehicle. Actuators used in aerospace vehicle require very accurate positioning accuracy, high dynamic requirements. Hence the actuator design in aerospace vehicle is very critical and plays very important role in total performance of the vehicle. The actuators are to be designed very compactly with hi...

In order to support the development of high–precision spacecraft, current state Stewart vibration isolation platform in field aerospace micro–vibration was surveyed. First, based on analyses causes and characteristics spacecraft micro–vibration, principles, characteristics, advantages disadvantages four technologies are summarized. Second, process platform, from structural proposal theoretical ...

Yong Li is a Research Associate at the School of Surveying & Spatial Information Systems, the University of New South Wales (UNSW), Sydney, Australia. Yong obtained a Doctor of Philosophy in flight dynamics from the Northwestern Polytechnical University, China. He was working on GPS aerospace applications, first at the Beijing Institute of Control Engineering and then the Japanese Aerospace Exp...

The National Aerospace Laboratory NLR is the central aerospace research anddevelopment organization in the Netherlands, and is actively involved in international simulationprojects. In the HPCN project SIMULTAAN, NLR developes a generic scenario management toolnamed SMARTFED for real-time monitoring and control of networked simulations. The scenariomanagement tool also offers fu...

It is well-known that the use of a large adaptive gain in model-reference adaptive control (MRAC) can result in poor robustness.1 Two well-known robust modification methods, namely; the σ -modification2 and e-modification,3 have been used extensively. The last decade has seen a surge in many new adaptive control methods such as the L1 adaptive control,4 adaptive loop transfer recovery,5 Kalman ...

HIJOGETT, CLAYTON. Combustion processes in the aerospace environment. Aerospace Med. 40(11) :1176-1180. 1969. The aerospace environment introduces new and enhanced fire hazards because the special atmosphere employed may increase the frequency and intensity of fires, because the confinement associated with aerospace systems adversely affects the dynamics of fire development and control, and bec...

A new procedure for deriving nonlinear mathematical modeling for a specific class of aerospace hydro - mechanical control valves is presented. The effects of friction on the dynamic behavior of these types of valves along with the experimental verifictions are also given. The modeling approach is based on the combination of the following three tasks: decomposition of the valve into simple speci...

When dealing with imperfect data and general models of dynamic systems, the best estimate is always sought in the presence of uncertainty or unknown parameters. In many cases, as the first attempt, the Extended Kalman filter (EKF) provides sufficient solutions to handling issues arising from nonlinear and non-Gaussian estimation problems. But these issues may lead unacceptable performance and e...