| タイトル | Project Freebird: An orbital transfer vehicle |
| 本文（外部サイト） | http://hdl.handle.net/2060/19950006324 |
| 著者（英） | Cohen, Lisa E.; Brann, David M.; Downard, Catherine L.; Aneses, Carlos A.; Campos, Mario J.; Blanchette, Ryan L.; Curtis, Trevor J.; Corcoran, Daniel J., III; Douglass, Deborah A.; Cox, James F. |
| 著者所属（英） | Universities Space Research Association; Massachusetts Inst. of Tech. |
| 発行日 | 1994-01-01 |
| 言語 | eng |
| 内容記述 | Freebird is a space-based orbital transfer vehicle designed to repair and deorbit orbital assets. Freebird is based at International Space Station Alpha (ISSA) at an inclination of 51.6 deg and is capable of three types of missions: crewed and teleoperated LEO missions, and extended robotic missions. In a crewed local configuration, the vehicle can visit inclinations between 30.8 deg and 72.4 deg at altitudes close to 390 km. Adding extra fuel tanks extends this range of inclination up to 84.9 deg and down to 18.3 deg. Furthermore, removing the crew module, using the vehicle in a teleoperated manner, and operating with extra fuel tanks allows missions to polar and geosynchronous orbits. To allow for mission flexibility, the vehicle was designed in a semimodular configuration. The major system components include a crew module, a 'smart box' (which contains command, communications, guidance, and navigation equipment), a propulsion pack, extra fuel tanks, and a vehicle storage facility (VSF) for storage purposes. To minimize risk as well as development time and cost, the vehicle was designed using only proven technology or technology which is expected to be flight-qualified in time for the intended launch date of 2002. And, because Freebird carries crew and operates near the space station, it must meet or exceed the NASA reliability standard of 0.994, as well as other standard requirements for such vehicles. The Freebird program was conceived and designed as a way to provide important and currently unavailable satellite repair and replacement services of a value equal to or exceeding operational costs. |
| NASA分類 | SPACECRAFT DESIGN, TESTING AND PERFORMANCE |
| レポートNO | 95N12737
NASA-CR-197201
NAS 1.26:197201 |
| 権利 | No Copyright |
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