SATELLITE ACTIVE AND PASSIVE VIBRATION CONTROL DURING LIFTOFF

The feasibility of active and passive vibration control systems for su ppressing the transfer of orbiter vibration energy to its payload duri ng liftoff is studied, A simple five-degree-of-freedom lump parameter model of a satellite is considered, and the performances of active and passive vibration control systems are evaluated and compared. Effecti veness of various vibration control systems for protection of the Spac e Shuttle payload during liftoff are analyzed. Peak responses of the s atellite with active and passive vibration control systems are compare d with those in the absence of-vibration control systems. The results show that properly designed passive and active vibration control syste ms are highly effective in reducing the liftoff vibration to its paylo ad.