gathering 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

information acquisition / collection / gathering

information gathering

information-gathering assets

intelligence gathering

intelligence gathering means

hinder intelligence gathering

intel-gathering

intel-gathering abilities

intelligence-gathering method

intelligence-gathering operation

information-gathering system

potable information gathering system

gathering counterintelligence information

gathering strategic political information

intelligence gathering drone

apparent speed

average speed

blade speed

convoy speed

critical speed

cross-country speed

endurance speed

exhaust speed

full speed (naut.)

gear speed decreaser

group transit speed

high-speed antiradiation missile (HARM)