wind speed and direction

wind direction indicator

wind direction (W/D)

magnetic wind direction

prevailing wind direction

true wind direction

wind rode / wind-rode

wind relative bearing / wind-relative bearing

wind's eye (in the wind's eye)

wind speed

high-speed wind tunnel

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

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

direction and control of the armed forces

multifunctional radio control, direction finding and suppression system (portable) (MKRPP)

vehicle position and direction indicator

fire direction and control system

command and fire direction net

agree the time and direction of flight

Enables reversible motor direction to provide negative thrust and allow inverted flight

Make sure your motors spin up reliably on arm and in the correct direction

Rate and direction

Set motor spin direction by selecting and spinning each motor individually

course and speed calculator

fourth and fifth speed gear synchronizer

hovering and low-speed indicator

Air Force tactical air direction net

automatic combat direction system

compass direction