Airships
Airships are lighter-than-air vehicles that use gas to provide lift and propulsion. They are typically made up of a large envelope filled with a gas such as helium or hydrogen, and are powered by engines that drive propellers or other forms of thrust. Airships have been used for a variety of purposes, including transportation, military reconnaissance, and scientific research. They offer several advantages over other forms of transportation, including their ability to stay aloft for long periods of time and their ability to carry heavy payloads. However, airships also have several disadvantages, including their vulnerability to weather conditions and their relatively slow speed compared to other forms of transportation.
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