CopterBox is a cargo delivery system that is useful in situations where a parachute wouldn’t be practical. Deployable in drop speeds of up to 140 knots from a wide variety of aircraft, it uses three rotor blades which slow the speed of descent using the principle of autorotative lift. In addition, a welded wire rotor hub protects the box prior to launch and allows the box to withstand aerodynamic and centrifugal forces during descent.
More information on CopterBox can be found at www.dropmaster.com.