Application of Kevlar to parachute system design

Abstract

Kevlar-29, an aramid fiber manufactured by DuPont, is being used on parachute systems requiring high strength-to-weight ratios or resistance to sustained high temperatures. Tests of parachutes using Kevlar webbing, braided cords, ribbons, and thread have demonstrated that these Kevlar materials can be used successfully in ribbon parachutes with no detrimental effects on performance. A few changes must be made in the design of a ribbon parachute to accommodate Kevlar's high modulus. Examples of parachutes that use Kevlar suspension lines, radials, ribbons, reefing lines, bridles, and skirt bands are presented to show that they are much lighter and more resistant to aerodynamic heating than their all-nylon counterparts.