| The helicopter is fitted with ballonet flotation devices for emergency landing on water. |
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| This triggers an automatic mechanism that pumps air into the ballonet compartment to compensate. |
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| The initial design of the ballonet size will determine an individual airship's maximum change of altitude capability. |
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| The altitude at which all air has been removed from the ballonet is referred to as the pressure altitude. |
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| As a rule, such airships have a soft structure of a ballonet and consequently a considerable drag. |
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| The ballonet is an airtight bag which allows the density of the blimp to be adjusted by adding or releasing air. |
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| The envelope is a helium gas cell, with an air ballonet which is pressurized by a ballonet fan. |
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| The pressure inside the ballonet acts on the helium inside the envelope to maintain the shape. |
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| With the ballonet deflated, the system has enough positive buoyancy to lift off by itself and drag an appreciable length of tether along with it. |
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| The design is such that with the ballonet maximally inflated, the airborne wind turbine system is just slightly negatively buoyant, so it will land gently even if there is no wind. |
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| The ballonet is a zero-porosity internal membrane filled with the inert gas helium. |
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| The upper chamber is filled with helium and the lower chamber is a pressurized air compartment, called a ballonet. |
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| This helps ensure a steady stream of power to the SAS-51's propulsion equipment and components that rely on electricity such as the rudder machines, ballonet fans and valves. |
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