Accession Number : AD0629773

Title :   FREE BALLOONS WITH OFF-DESIGN PAYLOADS,

Corporate Author : LITTON SYSTEMS INC ST PAUL MINN APPLIED SCIENCE DIV

Personal Author(s) : Smalley,Justin H.

Report Date : 31 DEC 1965

Pagination or Media Count : 40

Abstract : The membrane equations for an axi-symmetric balloon and the equation of equilibrium are modified for application at conditions other than the design payload and design altitude. Examples are presented which show the change of shape, stresses, volume and float altitude resulting from payloads different than the design value. It is shown that, for payloads greater than the design value, local radius decreases everywhere so that no fullness is required to maintain zero circumferential stress. For payloads less than the design value, circumferential stresses are developed in the fully tailored portions. (Author)

Descriptors :   (*BALLOONS, EXPERIMENTAL DESIGN), GEOMETRIC FORMS, PAYLOAD, AERODYNAMIC CHARACTERISTICS, MEMBRANES, STRESSES, NUMERICAL ANALYSIS

Subject Categories : Lighter-than-air Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE