Bluebulb Projects presents:
The Measure of Things Logo
Enter a measurement to see comparisons



139 inches per second is about one-twentieth as fast as a Helicopter
In other words, it's 0.045 times the speed of a Helicopter, and the speed of a Helicopter is 22.4 times that amount.
(for AH-64A Apache, a.k.a. Hughes Model 77) (maximum cruise speed)
The AH-64 helicopter, one of the primary helicopters used by the United States Army, flies at a top cruise speed of 3,110 inches per second. The AH-64 is the primary military helicopter of several nations including the United States, the United Kingdom, Israel, Japan, and the Netherlands.
There's more!
Click here to see how other things compare to 139 inches per second...