co-directional
121Directional Coupling — Richtungskopplung …
122directional — di·rec·tion·al || dɪ rekʃənl adj. pertaining to direction; showing direction …
123directional beacon — A transmitter that emits coded signals automatically to enable aircraft to determine their bearing from a beacon with a communications receiver. Polar diagram of a VOR (very high frequency omnidirectional radio range) …
124directional control — The control of an airplane with respect to yawing about the normal, or vertical, axis. This control is exercised by ailerons and rudder …
125directional instability — The tendency of aircraft to depart from a straight flight by a combination of yawing and sideslipping without any additional control input …
126directional stability — The stability that concerns yawing about the normal, or vertical, axis. An aircraft is directionally stable if when it is temporarily deflected from its course, it tends to return to the original course without any correction applied by the pilot …
127directional — adjective 1》 relating to or indicating the direction in which someone or something is facing or moving. 2》 having a particular direction of motion, progression, or orientation. Derivatives directionality nalɪti noun directionally adverb …
128directional — di·rec·tion·al …