Aerostat-Airship Balloon Envelope
Item Name Code (INC) 69081
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This component of an aerostat or airship (dirigible) is comprised of a lightweight skin filled with a lifting gas, such as helium. The lifting gas may be in one or more gasbags. The envelope may be non-rigid, semi-rigid, or rigid. The envelope shape may be conventional (ellipsoidal) or hybrid (combining the buoyant lift of lighter-than-air gas with the aerodynamic lift created by the shape of the aircraft as it flies through the air).
Additional Information for Aerostat-Airship Balloon Envelope
An Aerostat-Airship Balloon Envelope, also known as a balloon envelope or simply an envelope, is the main body of an aerostat or airship. It is a large, flexible bag that is filled with a lighter-than-air gas, such as helium or hydrogen, to provide buoyancy and lift to the aircraft.
The envelope is typically made of a durable and lightweight material, such as nylon or polyester, that is able to withstand the stresses and strains of flight. It is designed to be airtight to prevent the gas from escaping and to maintain the desired level of buoyancy.
The shape of the envelope can vary depending on the type of aerostat or airship. For example, a traditional hot air balloon has a spherical or teardrop shape, while a rigid airship has a more elongated shape with a framework inside to maintain its structure.
The envelope is attached to a gondola or cabin, which houses the crew, passengers, and equipment. It is also connected to various control systems, such as ballonets or gas cells, which allow for the adjustment of the gas volume and pressure to control the altitude and stability of the aerostat or airship.
Overall, the aerostat-airship balloon envelope is a crucial component of these aircraft, providing the necessary lift and stability for safe and controlled flight.