31. In April 2013, a TIF-25K Tethered Aerostat ( unmanned blimp ) was tested from the stern of HSV-2. 32. It is distinct from an airship, which is a powered aerostat that can propel itself through the air in a controlled manner. 33. The first indication of the Iraqi ground advance was from a radar-equipped aerostat that detected an Iraqi armour column moving south. 34. In conventional usage, the term "'aerostat "'refers to any aircraft that remains aloft primarily using aerostatic buoyancy. 35. His distance, duration and altitude records have made him one of the best known balloonists and aerostat designers and engineers in the world. 36. But opponents claim ROTHR is not necessary because the island already has the Aerostat , a radar installation with a range of about 200 miles. 37. In aeronautics, a "'balloon "'is an unpowered aerostat , which remains aloft or floats due to its buoyancy. 38. The original STARLite radar is used on the MQ-1C Grey Eagle and the Lockheed Martin Persistent Threat Detection System ( PTDS ) aerostat . 39. And the USAF has moved to shut down the Tethered Aerostat Radar System which has proved vital in the fight against the Illegal drug trade. 40. The term " aerostat " has also been used to indicate a tethered or moored balloon as opposed to a free-floating balloon.
