Mach 5

Five times soundspeed

Mach 5 is five times the speed of sound—approximately 3,800 miles per hour at sea level, though the exact speed varies with temperature and altitude.

Aircraft traveling at Mach 5 or above are classified as hypersonic.

The term appears in aerospace contexts and popular culture, notably as the name of the car in the anime series *Speed Racer*.

Related

sonic boom · shock wave · jet · fighter jet · rocket · aircraft · sound barrier · afterburner · aerodynamics · Speed Racer · cockpit · altitude · turbine · land speed record · scramjet · SR-71 · Concorde · wind tunnel

Categories
Opposites
speed classification

Mach 5stationary

Not in motion

standstill · motionless · subsonic · at rest · crawling

motion vs. stillness

Mach 5immobile

Unable to shift

static · stopped · inert · fixed · anchored

speed classification regime

Mach 5subsonic

Below sound's speed

transonic · cruising speed

Phrases
Family

Mach, machine, machinery, machinist, machining, machined

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Positive · Rated G