FIBERGLASS MOTOR CASE STUDY POLARIS SECOND STAGE END CLOSURE

Abstract

The end contours of the second stage polaris case were refined to eliminate or minimize bending and points of inflection in the pressurized dome structure. Tests on a polar ported scale model rocket chamber were conducted to demonstrate the successful achievement of this objective. The zero-shear contour is compatible with winding angle and pattern requirements, produces uniform strain distribution throughout the dome structure and conforms to the established deflection characteristics. This empirically determined contour was in complete agreement with the theoretical geodesic contour. The use of this contour results in the attainment of a highly efficient structure in which the longitudinal and circumferential glass filaments are stressed equally. An empirical method was developed which permits the determination of an optimum zero shear contour for different winding angles, patterns and design configurations. Results agree with analytical calculations.

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Document Details

Document Type
Technical Report
Publication Date
Mar 23, 1962
Accession Number
AD0273964

Entities

People

  • T. Siuta

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Fabrication
  • Fiberglass
  • Geometry
  • Glass Fibers
  • Hydrostatic Pressure
  • Instrumentation
  • Internal Pressure
  • Laminates
  • Materials Processing
  • Mechanics
  • Model Tests
  • Physical Properties
  • Pressurization
  • Rocket Engines
  • Shear Stresses
  • Strain Gages

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.