relative altitude

wind relative bearing / wind-relative bearing

Return altitude (meters) - only applies in Fixed Altitude mode

relative probability of adoption

relative speed

relative strengths

relative velocity

relative inlet angle

relative outlet angle

relative bearing

relative equilibrium of a liquid

relative evaporation

relative roughness

relative thickness of an aerofoil section

relative density

relative humidity

movement and relative motion

relative isohyps / isohypse

Convention IV relative to the Protection of Civilian Persons in Time of War

Geneva Convention relative to the Protection of Civilian Persons in Time of War

relative wind

Apply yaw rotation relative to a FPV camera

altitude

altitude barrier

altitude dial

altitude performance

altitude separation

cruising altitude

gain altitude

high altitude

high altitude-high opening (HAHO)

high altitude-low opening (HALO)

high- and low-altitude surveillance