Lighter-than-air Craft -

: Use a partial keel or frame to support the envelope and distribute weight. 2. Lifting Agents

: Powered, steerable aerostats equipped with engines and control surfaces like rudders and elevators for navigation. lighter-than-air craft

: Unpowered aerostats that drift with the wind or are tethered in place. Pilots primarily control altitude by adjusting the gas temperature or releasing ballast. : Use a partial keel or frame to

LTA vehicles are broadly categorized into unpowered and powered versions: lighter-than-air craft