Definition of Ullagal. Meaning of Ullagal. Synonyms of Ullagal

- Ullage or headspace is the unfilled space in a container, particularly with a liquid. The word ullage comes from the Latin word oculus, used by the Romans...
- Ullage motors (also known as ullage engines or ullage rockets) are relatively small, independently fueled rocket engines that may be fired prior to main...
- Ullage (from the French ouillage) is a winemaking term that has several meanings but most commonly refers to the headspace of air between wine and the...
- fully filled, and during use, there is a space above the fuel, called the ullage, that contains evaporated fuel mixed with air, which contains the oxygen...
- infeasible at the time. The upper stages also used small solid-propellant ullage motors that helped to separate the stages during the launch, and to ensure...
- perfectly with the retrorockets firing on the first stage to decelerate it and ullage rockets on the S-IV firing to settle its fuel to aft of the stage. After...
- control authority is provided by cold gas thrusters fed with residual ullage gas. Four perpendicular vents are located within the interstage, placed...
- oxygen concentration. A full LPG gas cylinder contains 86% liquid; the ullage volume will contain vapour at a pressure that varies with temperature. LPG...
- small Auxiliary Propulsion System (APS) thruster modules were added as ullage motors for restarting the J-2 engine and to provide attitude control during...
- velocities. Simply: propellants pressurized by either pumps or high pressure ullage gas to anywhere between two and several hundred atmospheres are injected...