Effects of Canopy Geometry on the Infinite Mass Opening-Shock Factor of a Cross Parachute with a W/L Ratio of 0.264
NAVAL ORDNANCE LAB WHITE OAK MD
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The effects of cloth permeability, number of suspension lines, and suspension line length on the infinite mass opening-shock factor of the cross parachute were investigated in a wind tunnel. Forty-inch-diameter models with a canopy arm-to-length ratio WL of 0.264 were deployed at wind-tunnel velocities of 150 or 200 miles per hour. Results of these tests indicate that cloth permeability influences the infinite mass shock factor significantly. A decrease in the cloth permeability results in an increase in the shock factor. Suspension line length and number of suspension lines do not appreciably affect the shock factor. The steady-state drag coefficients are affected by the cloth and suspension line parameters.
- Gliders and Parachutes