| Autor: |
Kerry T. Nock, Kim M. Aaron, Brenda Linfield, Dale R. Burger, Matthew Kuperus Heun |
| Rok vydání: |
2001 |
| Předmět: |
|
| Zdroj: |
39th Aerospace Sciences Meeting and Exhibit. |
| DOI: |
10.2514/6.2001-1148 |
| Popis: |
Global Aerospace Corporation is developing a lightweight, modular solar array (StratArrayTM S/A) for NASA's Ultra Long Duration Balloon (ULDB) missions. The NASA objectives include developing a low-cost, integrated power system capable of supporting operations above 100,000 feet for durations as long as 100 days. The ULDB solar array must provide up to 2 kW for missions from polar to equatorial latitudes. Global Aerospace Corporation has developed an innovative design that is lightweight and meets the requirements with low mass and cost. The specific innovations of this effort were the use of: the Earth's gravity field to reduce the mass of the deployment mechanism modular solar array construction tilt cables to orient the panels toward the sun without array rotation retraction cables to restow the array to protect it against impact forces during balloon termination and payload landing. An integral part of the design is the ability to track the sun without the need for gimbals or slip rings. The use of a modular approach allows selection of the appropriate number of array modules for each mission. The approach also allows the potential for substitution of less expensive array modules (this increases total subsystem mass) if programmatic needs require lower array costs. The ability to restow the array modules allows refurbishment to achieve reduced life cycle costs. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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