1. The aerostat contained a rigid internal axle along its long axis. 2. The aerostat could be positioned above the vessel for surveillance. 3. Helikites are the only compact aerostat capable of reliably operating at sea. 4. These aerostats outperform a conventional aerostat of twice the size. 5. A powered, steerable aerostat is called a " dirigible ". 6. A World Wide Aeros unmanned aerostat blimp has already been deployed by the Marine Corps. 7. The upper chamber is filled with helium and provides the aerostat 's lifting capability. 8. In the early morning, lightning struck an aerostat that was tethered to the vessel. 9. The final use of the site was during the 1980s for tethered aerostat balloon radar missions. 10. The hull of the aerostat contains two parts separated by a gas-tight fabric partition. 
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