Accession Number:

AD0744103

Title:

Study of Parachute Forces and Canopy Pressure Distribution Measured in a Subsonic Wind Tunnel under Infinite Mass Conditions

Descriptive Note:

Final rept. 1 Aug 1969-15 Aug 1971

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS

Personal Author(s):

• Heinrich, Helmut G.
• Saari, D. P.

Report Date:

1972-03-01

Pagination or Media Count:

147.0

Abstract:

For the purpose of parachute canopy stress analysis during the period of inflation, the pressure distribution measured on a ring-slot parachute model is related to the instantaneous parachute force. The correlation of pressure and force data is based on test results established at the Deutsche Forschungsanstalt fuer Luft-und Raumfahrt DFLR, Braunschweig, Germany. The final pressure-force-time relationship incorporate individual as well as averaged test data. A fair agreement could be shown between measured forces and those obtained from numerical integration of differential pressure over the canopy surface.

Descriptors:

• *PARACHUTES
• STRESSES
• DEPLOYMENT
• EXPERIMENTAL DATA
• PRESSURE
• AERODYNAMIC CHARACTERISTICS
• FORCE(MECHANICS)
• WIND TUNNEL MODELS
• PARACHUTE FABRICS

Subject Categories:

• Gliders and Parachutes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE