a 3d rendering of an aerostat model

aerostat balloon airship blimp helium gas technology military sky surveillance research wind meteorology hydrogen communication stability hot air atmosphere envelope three dimensional cut scientific experiment science mid-air white color monitor flying inflatable levitation vehicle aerospace industry high aerodynamic cloud reconnaissance aircraft taking activity drag platform duration tether laws advertising altitude lighter-than-air dirigible aeronautics buoyancy space observation aerostat balloon airship lighter-than-air isolated blimp buoyancy helium gas floating technology white aeronautics drag space observation monitoring scientific military payload 3d ballonet sky surveillance tethered research wind flight meteorology lift clouds platform hydrogen dirigible communication duration stability tether rendering aviation high-altitude laws advertising atmosphere aerodynamics reconnaissance altitude