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New and Improved Material for Expandable Structures

Report Number: ASD TDR 62-964, p. 327-370
Author: Marco, D. M.
Corporate Author: Goodyear Aircraft Corporation
Laboratory: Directorate of Materials & Processes
Date of Publication: 1963-01
Pages: 44
Project: 7320 - Fibrous Materials for Decelerators and Structures
AD Number: See AD0299030


The initial objective of the program being conducted by GAC under Contract AF 33(616)-7854 is to establish the general requirements of expandable structures with respect to special and re-entry environment; review present materials research which may be applicable to expandable structures; and recommend areas and specific programs in which additional research is required. The initial effort was a study which would fulfill the above objective.

Upon completion of the initial study, the program was expanded to include four (4) specific programs involving research in the following areas:

1, Weaving of Stranded Metal Yarns
2. Film and Elastomer Permeability
3. Radiation Re-Entry Coating
4. High Temperature Protective Study

Tasks 1 and 3 have just commenced with respect to this program; however, there is sufficient scientific data to establish feasibility of accomplishing their objectives.

The permeability study is concerned with exposing polyvinyl fluoride; polyvinylidine fluoride, polytrifluoromonochloroethylene, and tetrafluoroethylene-hexafluoropropylene film to an ultraviolet source in a vacuum of approximately 10-6 Torr. These materials are being exposed to three different energy levels and changes in permeability, mechanical and chemical structure are being noted. A similar exposure and analysis will be conducted for a butyl, Viton, and Silicone elastomers.

In the high temperature protective study, radiation, insulation, ablation and combinations of methods were investigated and analyzed for use with expandable structures.

Lockheed Martin Missiles & Fire Control
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