| タイトル | An electromechanical actuation system for an expendable launch vehicle |
| 著者（英） | Burrows, Linda M.; Roth, Mary E. |
| 著者所属（英） | NASA Lewis Research Center; NASA Headquarters |
| 発行日 | 1992-01-01
1992 |
| 言語 | eng |
| 内容記述 | A major effort at NASA-Lewis in recent years has been to develop electro-mechanical actuators (EMA's) to replace the hydraulic systems used for thrust vector control (TVC) on launch vehicles. This is an attempt to overcome the inherent inefficiencies and costs associated with the existing hydraulic structures. General Dynamics Space Systems Division, under contract to NASA Lewis, is developing 18.6 kW (25 hp), 29.8 kW (40 hp), and 52.2 kW (70 hp) peak EMA systems to meet the power demands for TVC on a family of vehicles developed for the National Launch System. These systems utilize a pulse population modulated converter and field-oriented control scheme to obtain independent control of both the voltage and frequency. These techniques allow an induction motor to be operated at its maximum torque at all times. |
| NASA分類 | LAUNCH VEHICLES AND SPACE VEHICLES |
| レポートNO | 93A25891 |
| 権利 | Copyright |
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