Editing Airship (section)

===Thermal===
[[File:Prallluftschiff 01 KMJ.jpg|thumb|left|upright|[[Thermal airship]] (manufacturer GEFA-FLUG/Germany)]]

Several companies, such as [[Cameron Balloons]] in [[Bristol]], United Kingdom, build [[Thermal airship|hot-air airships]]. These combine the structures of both hot-air balloons and small airships. The envelope is the normal cigar shape, complete with tail fins, but is inflated with hot air instead of helium to provide the lifting force. A small gondola, carrying the pilot and passengers, a small engine, and the burners to provide the hot air are suspended below the envelope, beneath an opening through which the burners protrude.

Hot-air airships typically cost less to buy and maintain than modern helium-based [[blimp]]s, and can be quickly deflated after flights. This makes them easy to carry in trailers or trucks and inexpensive to store. They are usually very slow moving, with a typical top speed of {{convert|25|–|30|km/h|mph m/s|abbr=on}}. They are mainly used for advertising, but at least one has been used in [[rainforest]]s for wildlife observation, as they can be easily transported to remote areas.