Accession Number:

AD0478442

Title:

FLOW CHARACTERISTICS OF RIGID RIBBON PARACHUTE CANOPIES IN SUPERSONIC FLOW.

Descriptive Note:

Final rept. 15 Apr 63-15 Apr 65,

Corporate Author:

MINNESOTA UNIV ST PAUL

Personal Author(s):

• Heinrich ,H. G.
• Rose ,R. E.
• Kovacevic,N. D.

Report Date:

1965-12-01

Pagination or Media Count:

72.0

Abstract:

An inlet diffuser model was used in freestream and wake flows to establish the relationship between shock wave standoff distance and mass flow through a cavity. The results of these experiments were used to devise a method to calculate shock wave stanoff distances as a function of the mass flow through the cavity. By means of further experiments, it was shown that this method is useful for carrying out similar calculations for porous parachutes in supersonic flow. The interaction between suspension line boundary layers and the bow shock of porous parachute canopies, and its effect upon the pressure distribution and the pressure drag coefficient, has been studied. Pressure drag coefficients depending on the number of suspension lines were established. Author

Descriptors:

• (*RIBBON PARACHUTES
• SUPERSONIC FLOW)
• SHOCK WAVES
• BOUNDARY LAYER
• DRAG
• PRESSURE
• DISTRIBUTION
• POROUS MATERIALS
• SUSPENSION DEVICES
• AERODYNAMIC CONFIGURATIONS
• AERODYNAMIC CHARACTERISTICS
• WIND TUNNEL MODELS
• DUCT INLETS
• EXPERIMENTAL DATA
• DECELERATION
• FLUID FLOW

Subject Categories:

• Gliders and Parachutes
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE