Accession Number:

ADA048695

Title:

Linearized Newtonian Aerodynamics of Slender Inflated Cones.

Descriptive Note:

Interim rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF IVAN A GETTING LABS

Personal Author(s):

• Ellinwood,John W.

Report Date:

1977-12-05

Pagination or Media Count:

37.0

Abstract:

Biconic vehicles covered with unsupported cloth are predicted to experience skin displacement from aerodynamic pressure at small angle of attack. The resulting shape, aerodynamic force, and moment perturbations are predicted as functions of given axial tension and internal pressurization. A tension parameter is identified that varies inversely as dynamic pressure. It is concluded that the inflatable loses its shape dramatically unless this tension parameter is at least of order one, and that this useful boundary cannot be appreciably extended by increasing pressurization, unless the internal pressure is at least an order of magnitude larger than external pressures. Author

Descriptors:

• *AERODYNAMIC FORCES
• *HYPERSONIC CHARACTERISTICS
• *CONICAL BODIES
• STRESS ANALYSIS
• DISPLACEMENT
• ANGLE OF ATTACK
• SHEAR STRESSES
• PERTURBATIONS
• BOW SHOCK
• INFLATABLE STRUCTURES
• SKIN(STRUCTURAL)
• INTERNAL PRESSURE

Subject Categories:

• Guided Missile Warheads and Fuzes
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE