Lighter-than-air Craft -

: Feature an internal structural framework that holds the gas cells and maintains the ship's shape regardless of gas pressure.

The choice of gas determines the lift capacity and safety profile of the craft: lighter-than-air craft

: Use a partial keel or frame to support the envelope and distribute weight. 2. Lifting Agents : Feature an internal structural framework that holds

: Rely entirely on internal gas pressure to maintain their shape. lighter-than-air craft

: Powered, steerable aerostats equipped with engines and control surfaces like rudders and elevators for navigation.