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A lifting gas or lighter-than-air gas is a gas that has a density lower than normal atmospheric gases and rises above them as a result, making it useful in lifting lighter-than-air aircraft. Only certain lighter than air gases are suitable as lifting gases.
Some airship designs that use a lighter-than-air lifting gas heat a portion of the gas, which is usually maintained in enclosed cells to gain additional lift. Heating the lifting gas causes expansion of the gas in order to further lower the density of the lifting gas, which results in greater lift.
LPG is composed mainly of propane and butane, while natural gas is composed of the lighter methane and ethane. LPG, vaporised and at atmospheric pressure, has a higher calorific value (46 MJ/m 3 equivalent to 12.8 kWh/m 3 ) than natural gas (methane) (38 MJ/m 3 equivalent to 10.6 kWh/m 3 ), which means that LPG cannot simply be substituted for ...
The air-filled red balloon acts as a simple ballonet inside the outer balloon, which is filled with lifting gas. A ballonet is an air bag inside the outer envelope of an airship which, when inflated, reduces the volume available for the lifting gas, making it more dense. Because air is also denser than the lifting gas, inflating the ballonet ...
Twelve of the vessel's gas cells were filled with a propellant gas instead of lifting gas with a total volume of 30,000 cubic metres, enough for approximately 100 flight hours. The fuel tank had a gasoline volume of 67 flight hours. Using both gasoline and Blau gas, one could achieve 118 hours of cruise time.
A 500-gallon underground propane tank was found at a ... Lighter Side. Politics. ... Loudoun County Fire and Rescue were called to the home in Sterling around 7:40 p.m. for a gas leak, Chief Keith ...
Add oil and place in the turkey: Heat the oil to 325°F, and slowly lower the turkey into the pot with turkey fryer tools, like a lifting hook and poultry rack. Maintain the temperature from 300 ...
Photo: Shutterstock. Design: Eat This, Not That!The debate between bodyweight exercises and lifting weights has long fueled discussions in fitness circles, sparking curiosity and prompting ...