takeoff speed

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

Nr gauge (Nr = speed of rotation) / rotor speed sensor

Motor PWM speed separated from PID speed

short takeoff air transport

takeoff

takeoff distance

takeoff run

takeoff weight

vertical / short takeoff and landing (V/STOL)

mean takeoff weight

aircraft takeoff inspection checklist

assisted takeoff engine

pre-takeoff check

pre-takeoff checklist

takeoff power

takeoff rating

takeoff thrust

conventional takeoff and landing aircraft (CTOL)

crosswind takeoff

safety takeoff

rocket-assisted takeoff

obstacle clearance takeoff

tail-down takeoff

takeoff (T/O)

take-off / takeoff

takeoff accident

takeoff airflow

takeoff check list

takeoff clearance

takeoff conditions