Accession Number : AD0730703

Title :   Study of the Effect of Char Formation on the Shear Strength of a Nylon-Phenolic Ablator.

Descriptive Note : Technical publication,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CALIF

Personal Author(s) : Smith,Warren K. ; Compton,W. Richard

Report Date : JUN 1971

Pagination or Media Count : 63

Abstract : A combined theoretical/experimental investigation of the importance of aerodynamic shear in the char removal from nylon-phenolic ablators is presented. The equations and numerical techniques used in a computer program developed to predict the one-dimensional behavior of charring ablators is also presented. In addition, a description of the experimental techniques employed in the measurement of char shear strength is given. It is shown that the shear strength of a 50% nylon-50% phenolic ablator during or after charring is an order-of-magnitude higher than the aerodynamic shear stresses developed during hypersonic flight at low altitudes. (Author-PL)

Descriptors :   (*LAMINATED PLASTICS, *ABLATION), AERODYNAMIC HEATING, NYLON, PHENOLIC PLASTICS, PYROLYSIS, MECHANICAL PROPERTIES

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE