economical speed

economical carburetor

economical range

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

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)

high-speed boat

hypersonic (speed)

lightweight high-speed antisubmarine torpedo

maximum road speed

maximum speed

operating speed

output speed

relative speed

safe speed

ship speed

sonic speed

speed of advance

speed range