Definition
The thrust produced by a propeller or jet engine when the aircraft is not moving. It is the forward force the powerplant generates while stationary on the ground at full power.
Plain English
How much pushing or pulling force the engine and propeller (or jet) produce while the aircraft is standing still.
Context Anchor
Seen in engine, propeller, and performance discussions, especially when comparing takeoff pull or ground test results.
Derivation
Static comes from the Latin staticus, meaning 'standing still.' Thrust is the forward force. So 'static thrust' literally means the forward force measured while standing still.
Why Pilots Care
It confirms engine performance before flight and determines how quickly the aircraft will accelerate during takeoff.
Grounding Statement
Picture an airplane secured so it cannot move while the engine is run up; the forward pull it makes at that moment is static thrust.
Intuition Check
Static does not mean electrical static here. It means the aircraft is not moving through the air when the thrust is being considered or measured.
Example Sentence 1
During the engine run-up, the pilot held the brakes and brought the throttle up to check that the engine was producing full static thrust.
Example Sentence 2
Adequate static thrust ensures the aircraft can reach rotation speed before the runway ends.