Definition
The angle between the airplane's flightpath and the horizontal plane during a climb, measured in degrees. It expresses how steeply the airplane is gaining altitude relative to the distance traveled over the ground.
Plain English
How steep the climb is. A bigger climb angle means the airplane is going up more sharply for each foot it moves forward.
Context Anchor
Seen in climb performance discussions, takeoff obstacle clearance, and climbing turns.
Derivation
Angle comes from the Latin word angulus, meaning a corner. In aviation, it helps to think of an angle as the measured opening between two directions: here, the airplane’s upward path and a level reference.
Why Pilots Care
It determines how quickly altitude is gained over distance and directly affects obstacle clearance.
Intuition Check
Climb angle is not the same as climb rate. Climb angle is about height gained over distance; climb rate is about height gained over time.
Example Sentence 1
With tall trees off the end of the runway, the pilot flew Vx to get the steepest climb angle until clear of the obstacles.
Example Sentence 2
A steeper climb angle lets the airplane clear obstacles in less horizontal distance.