Accession Number:

ADA089404

Title:

Figures of Merit for Mirror Materials

Descriptive Note:

Interim rept.

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA MATERIALS SCIENCES LAB

Personal Author(s):

Report Date:

1980-07-10

Pagination or Media Count:

42.0

Abstract:

Potential mechanisms that result in excessive wavefront distortions by large mirrors are reviewed, with the objective of defining the mirror substrate material property requirements in each case. A generalized figure of merit is found to require maximal thermal conductivity, elastic modulus, strength, melting point, and dimensional stability. The thermal expansion coefficients and their variability must be minimized. The analyses can be used to optimize mirror design and materials for a wide range of mechanical and thermal loading conditions.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE