orbital speed

Earth's mean orbital speed

near-orbital speed

wave-motion particle orbital speed

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

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

cruise speed / cruising speed

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

orbital propellant farm

orbital refill

specific orbital energy

earth orbital flight

orbital airscoop

orbital apogee

orbital complex

orbital complex flyby

orbital coordinate system

orbital debris

orbital flight

orbital laser power station

orbital mapping

orbital motion

orbital nuclear reactor

orbital period

orbital plane

orbital revolution

orbital solar power plant

orbital-scatter radio communication

bomb orbital strategic system

orbital glide bomb

manned orbital command post

orbital correction