Definition
The arrangement of an aircraft's drag-producing devices — landing gear, flaps, speed brakes, and similar surfaces — at a given moment. Each combination produces a different amount of aerodynamic drag, which directly affects the power required to maintain a given airspeed in level flight.
Plain English
How the aircraft is currently set up in terms of things that slow it down, such as gear and flaps being out or tucked away. Different setups create different amounts of resistance through the air.
Context Anchor
Used when discussing airspeed changes, power changes, and aircraft setup during straight-and-level flight.
Derivation
Drag comes from an old word meaning to pull or draw along. In flight, drag is the rearward pull of the air on the airplane. Configuration comes from a Latin idea of form or shape; here it means the airplane’s selected setup.
Why Pilots Care
It provides a stable method to reduce speed without large pitch changes that could lead to altitude deviations or stalls in instrument conditions.
Grounding Statement
Picture lowering flaps in level flight: the airplane meets more air resistance and will slow unless you add enough power.
Intuition Check
Drag configuration does not mean the airplane is being physically dragged or is out of control. It means the airplane has been intentionally set up to create more air resistance.
Example Sentence 1
After lowering the gear and selecting approach flaps, the pilot added power to maintain altitude in the new drag configuration.
Example Sentence 2
Maintaining straight-and-level flight became easier once the aircraft was placed in a drag configuration that allowed gradual deceleration.