Advanced Composite Missile and Space Design Data.
Abstract
Engineering data appropriate to the use of selected graphite/epoxy composite materials in dimensionally critical space applications is presented. The thermal strain characteristics of a large number of material/layup configurations over the temperature range -320F to 250F were investigated. Additional data from the investigation of two systems, HM-S/X-30 and GY-70/X-904, is also included. The out-gassing characteristics in a hard vacuum at temperatures up to 150F were measured including identification of outgassing on optical reflectors. Thermal conductivity data over the temperature range of -320F to 250F is presented as is the effect of moisture and the effect of thermal cycling of composite substrate lightweight mirrors over selected temperature intervals between -320F and 250F. The fabrication techniques, including the effects of layup, resin contact, and modular cure are discussed as they relate to dimensional stability. Finally, the design and fabrication of a lightweight 12-inch diameter fully figured spherical mirror is discussed and the results of a test of the figure are presented. (Author-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1974
- Accession Number
- AD0922712
Entities
People
- George E. Pynchon
Organizations
- General Dynamics