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...

A gas lift or bubble pump is a type of pump that can raise fluid between elevations by introducing gas bubbles into a vertical outlet tube; as the bubbles...

Its main component is one or more gas capsules made of lightweight skins, containing a lifting gas (hot air, or any gas with lower density than air, typically...

A gas lift chair is a form of office chair that allows the user to modify their height in relation to the height of a desk, leading to an increase in comfort...

Changes in air temperature (and thus the density of air) Changes in lifting gas temperature (for example, the heating of the hull by the sun). Accumulation...

from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay airborne. In early dirigibles, the lifting gas used was...

hydrogen as a lifting gas. Gas balloon clubs exist throughout the country. Rough estimates show 150 active gas pilots in Europe. In contrast, gas ballooning...

gas produced. A small but well-known use is as a lifting gas in balloons and airships. As with any gas whose density differs from that of air, inhaling...

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...

their luggage. The Germans had extensive experience with hydrogen as a lifting gas. Accidental hydrogen fires had never occurred on civilian Zeppelins,...

for the lifting gas, making it more dense. Because air is also denser than the lifting gas, inflating the ballonet reduces the overall lift, while deflating...

Joseph Black in c. 1780 to propose its use as a lifting gas, though practical demonstration awaited a gas-tight balloon material. On hearing of the Montgolfier...

approximately 45–48% of the lifting power of hydrogen or helium. Ammonia has sometimes been used to fill balloons as a lifting gas. Because of its relatively...

ambient pressure outside the balloon, and the temperature of the contained lifting gas. This allows the balloon to keep a stable altitude for long periods....

Since the Hindenburg disaster in 1937, helium has replaced hydrogen as a lifting gas in blimps and balloons: despite an 8.6% decrease in buoyancy compared...

superconductivity studies. Buoyant lifting: Because H2 is only 7% the density of air, it was once widely used as a lifting gas in balloons and airships. Leak...

rigid airships (e.g. Zeppelins), blimps rely on the pressure of the lifting gas (usually helium, rather than hydrogen) inside the envelope and the strength...

use manufactured town gas (coal gas) to fill balloons; this was not as light as pure hydrogen gas, having about half the lifting power, but it was much...

filled with a lifting gas such as helium, hydrogen or hot air, which is less dense than the surrounding air. When the weight of the lifting gas is added to...

framework rather than by being kept in shape by the pressure of the lifting gas within the envelope, as in blimps (also called pressure airships) and...

balloon that is unsealed at its base, creating a mechanism by which lifting gas can vent out the bottom of the balloon when the balloon becomes full...

has separate chambers for a non-heated lifting gas (such as hydrogen or helium) as well as for a heated lifting gas (as used in a hot air balloon or Montgolfière)...

task of distributing the suspension loads of these attachments and the lifting gas loads evenly throughout the whole hull's surface and may also partially...

used in its construction, including the gas used to fill the bag. Vacuum airships would replace the lifting gas with a near-vacuum environment. Having...

round shape uses the minimum material to accommodate a given volume of lifting gas, making it the lightest construction. However, in any significant wind...

breathable air (21% oxygen, 78% nitrogen) is a lifting gas on Venus in the same way that helium is a lifting gas on Earth, the upper atmosphere has been proposed...

a non-rigid airship—without any internal structure, the pressure of lifting gas within the airship envelope maintains the vessel's shape. From the launch...

lower vapor pressure than that of air. When water vapor is used as a lifting gas by a thermal airship the water vapor is heated to form steam so that...

beginning of the pioneer era. Steam power is distinct from its use as a lifting gas in thermal airships and early balloons. 1842: The Aerial Steam Carriage...

10 horsepower). Common off-grid pumpjack engines run on natural gas, often casing gas produced from the well, but pumpjacks have been run on many types...