| Autor: |
J. J. Beatty, Liem Nguyen, Peter Gorham, G. S. Varner, Patrick Allison, Brian Daily, Frank Baginski, Harm Schoorlemmer, Kaiyu Zhao, Debora Fairbrother, Joshua Furer, Steven Lang, Magdi A. Said, Kenneth A. Brakke, Amy Connolly, Carl Pfender, Leyland Young, Christian Miki |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
AIAA Balloon Systems Conference. |
| DOI: |
10.2514/6.2015-3041 |
| Popis: |
The ExaVolt Antenna (EVA) is the next generation balloon-borne ultra-high energy (UHE) particle observatory under development for NASA’s suborbital super-pressure balloon program in Antarctica. The design is based on a novel application of toroidal reflector optics. An array of patch antennas are suspended inside a super-pressure balloon with an RF reflective band surrounding the balloon’s equator, creating an ultra-large radio antenna system with a synoptic view of the Antarctic ice sheet below it. To validate this concept, a balloon/antenna system at 1/20-scale was fabricated for a test conducted at the NASA Wallops Flight Facility (WFF) in Fall 2014. In a ground test that mimicked aspects of ascent, the balloon and feed array successfully deployed. After pressurizing, the toroidal RF-reflector was pulsed using a microwave dish and the EVA data acquisition systems were validated. In this paper, we will present an overview of the EVA 1/20-scale test results and discuss implications for a full-scale mission. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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