Patent ID: 8220751
Filing Date: 2012-07-17
Classification: B64D

Abstract:
1. In combination with a ram air parachute canopy having a wingspan with upper and lower airfoil surfaces separated by chordwise-extending ribs to form cells inflated by inflow of air at an open leading edge, and suspension lines connecting the lower surface of the canopy to a load, the improvement comprising: a reefing slider with a spanwise length and a chordwise width having reinforced openings through which the suspension lines extend, said slider further having a plurality of separate retaining devices spaced along said spanwise length and secured to said canopy for retarding descent of the slider relative to the canopy from an upper reefing position in which inflation of the canopy is restricted, said slider being releasable from said canopy to descend along said suspension lines in response to release of said retaining devices due to force created by said inflow of air to said cells, a number of said retaining devices at a central area along said slider spanwise length and secured to a central part of said canopy wingspan being stronger than a number of said retaining devices at outer edges of said slider spanwise length and secured to wing tip portions of said canopy.