Definition
The maximum forward force a turbine engine is certified to produce for takeoff, limited to a specified time period (typically five minutes, or ten minutes in the event of an engine failure on a multi-engine aircraft). It is the highest power setting approved for normal use and is restricted to protect the engine from thermal and mechanical stress.
Plain English
The strongest pushing force the engine is allowed to make during takeoff, used only for a few minutes because running it that hard for longer would damage the engine.
Context Anchor
You will see this term in aircraft performance data, engine operating limits, and takeoff checklists, especially for turbine-powered aircraft.
Derivation
“Thrust” comes from an old word meaning to push or drive forward. In aviation, that helps because thrust is the forward push from the engine that moves the aircraft through the air.
Why Pilots Care
It directly affects how much runway is needed and how quickly the airplane can climb after leaving the ground.
Intuition Check
Takeoff thrust does not mean any amount of power used during takeoff. It means the approved takeoff setting, with limits on how and how long it may be used.
Example Sentence 1
The crew set takeoff thrust as the aircraft lined up on the runway and reduced power to climb thrust shortly after liftoff.
Example Sentence 2
On a hot day, the engines may not produce full takeoff thrust, lengthening the required runway.