Definition
An engine and propeller installation mounted at the front of an aircraft so that the propeller pulls the aircraft through the air. The propeller is positioned ahead of its mounting point, and the thrust it produces acts in tension on the airframe structure behind it.
Plain English
An engine arrangement where the propeller is at the front of the airplane and pulls it forward, rather than being at the back and pushing it.
Context Anchor
Seen in aircraft design, maintenance descriptions, and discussions of where the engine and propeller are installed on an airplane.
Derivation
From the Latin 'tractor', meaning 'one that pulls or draws', from 'trahere' (to pull). The same root gives us 'tractor' (the farm vehicle that pulls equipment) and 'traction'. The name fits because the propeller is literally pulling the aircraft through the air.
Why Pilots Care
Determines aircraft balance, propeller clearance requirements, and specific maintenance checks for engine mounts and propeller systems.
Intuition Check
Do not read “tractor” as a farm vehicle here. In this aviation use, “tractor” means the propeller pulls the aircraft forward.
Example Sentence 1
Most single-engine training aircraft use a tractor powerplant, with the propeller mounted on the nose.
Example Sentence 2
When working on a tractor powerplant, technicians check the propeller blades for nicks that could affect pulling efficiency.