Definition
Arrows used to represent forces acting on an aircraft, where the length of the arrow shows the strength (magnitude) of the force and the direction of the arrow shows the direction in which the force is acting.
Plain English
A way of drawing forces as arrows so you can see at a glance how hard each force is pushing or pulling, and which way it is acting on the airplane.
Context Anchor
Seen in diagrams explaining the four main forces acting on an aircraft: lift, weight, thrust, and drag.
Derivation
From Latin 'vector', meaning 'carrier' or 'one who conveys', based on the idea of carrying something from one point to another. In aviation use, a vector 'carries' two pieces of information at once: how much force and which way it points.
Why Pilots Care
Understanding force vectors lets a pilot visualize why the airplane climbs, descends, or turns when one force changes.
Analogy
Think of a tug-of-war drawn on paper. Each team is shown as an arrow pointing the way they pull, and the longer the arrow, the harder they pull. Force vectors do the same thing for the forces acting on an aircraft.
Grounding Statement
On an aircraft diagram, a force vector lets you see a push or pull as an arrow instead of just reading about it in words.
Intuition Check
A force vector is not just a force amount, and it is not just a direction line. Both matter: how strong the force is and which way it acts.
Example Sentence 1
The diagram used force vectors to show that lift and weight were equal and opposite during straight-and-level flight.
Example Sentence 2
When the pilot added power the thrust force vector grew longer and the airplane began to climb.