Aerostat Systems: The Future of Persistent Surveillance Aerostat systems, commonly known as blimps or balloon systems, are tethered lighter-than-air aircraft that can stay aloft for extended periods of time. At the heart of any aerostat system is the aerostat itself - a balloon filled with a gas that is less dense than air, allowing it to float. The two main gases used are helium or cold air. attached below the aerostat is a gondola that houses the...
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