Definition
A planned sequence of pitch attitudes, airspeeds, power settings, and configuration changes (flaps, gear) that the pilot flies from the start of the takeoff roll through the initial climb to a defined altitude or point in the departure. The profile is established by the aircraft manufacturer, operator, or training standard and is followed consistently to produce predictable performance and safe obstacle clearance.
Plain English
A step-by-step plan for how to fly the takeoff and the climb-out that follows it -- what speed to lift off at, when to raise the gear and flaps, what pitch to hold, and what power to use. Pilots fly the same plan every time so the airplane behaves the way it should.
Context Anchor
You encounter this during takeoff planning, especially when considering runway length, obstacles, terrain, weather, aircraft weight, or airport departure procedures.
Derivation
Profile originally meant the outline or side view of something. In aviation, it came to mean the planned shape of a flight path and the sequence of actions along that path. That helps here because the term is about both where the airplane goes and what the pilot does during the takeoff and climb.
Why Pilots Care
Following the correct profile guarantees obstacle clearance, meets performance requirements, and satisfies ATC or published departure instructions.
Intuition Check
Do not think of this as only the line the airplane flies after liftoff. A takeoff and departure profile includes the whole planned sequence: runway roll, liftoff, climb, configuration changes, speeds, and turns.
Example Sentence 1
During transition training, the instructor had her memorize the takeoff and departure profile so each climb-out looked the same.
Example Sentence 2
After takeoff the crew adhered to the published takeoff and departure profile until reaching the first fix on the SID.