// ORBITAL LOGISTICS AND PROPULSION TERM
Throttle
A mechanism or control that adjusts the amount of fuel or propellant flowing into an engine, thereby controlling its power or thrust. It allows for varying the speed or altitude of an aircraft or rocket.
TECHNICAL DEFINITION
A control input or mechanism that modulates the propellant flow rate to a rocket or jet engine, directly regulating the engine's thrust output and power level, enabling variable flight profiles.
BACKGROUND
The RS-25, also known as the Space Shuttle Main Engine (SSME), is a liquid-fuel cryogenic rocket engine that was used on NASA's Space Shuttle and is used on the Space Launch System.
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- Power control
- thrust control
- accelerator
- fuel valve
USAGE NOTE
Pilots use the throttle to increase or decrease the aircraft's speed and altitude.