A Space Imaging Concept Based on a 4-meter Spun-Cast Borosilicate Monolithic Primary Mirror

reportActive / Technical Report | Accession Number: ADA536520 | Open PDF

Abstract:

The goal of this effort is to produce the largest monolithic telescope capable of being lifted by a Delta IV or Atlas V EELV to 500 km. A strategy using a 4 m borosilicate mirror is proposed. A preliminary architecture was identified with a new mirror design that is estimated to be 40 times stiffer than a meniscus mirror of the same mass. A mass budget and conceptual packaging details were completed. The mirror was evaluated for its ability to handle launch loads using a time based strength, flaw size, and estimated support stresses. A thermal figuring method was investigated as the wavefront correction system with power and performance estimates. Future efforts will demonstrate mirror casting and thermal figuring.

Author(s):
West, Steve ; Bailey, S. H. ; Bauman, Steve ; Cuerden, Brian ; Olbert, Blain ; Bell, Ray ; Granger, Zac
Author Organization(s):
STEWARD OBSERVATORY TUCSON AZ
Descriptive Note:
Briefing charts
Supplementary Note:
Presented at Mirror Technology Days, held in Boulder, CO, on 7-9 Jun 2010. Prepared in cooperation with Lockheed Martin. Document consists entirely of briefing charts.
Pagination:
0021

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
AFRL
 Subject Terms
Joint Capability Areas:
JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_5_Command and Control; JCA_1.2.6_Concepts; JCA_5.3_Planning; JCA_8_Building Partnerships
Communities of Interest:
Space
Descriptor(s):
*TELESCOPES, *SPACE ENVIRONMENTS, *SPACE PERCEPTION, THERMAL EXPANSION, MONOLITHIC STRUCTURES(ELECTRONICS), ARCHITECTURE, SILICATES, COEFFICIENTS, MIRRORS, STRESSES, STRENGTH(GENERAL)
Field(s)/Group(s):
Optical Detection and Detectors
Keyword(s):
BOROSILICATE, E6, MONOLITHIC, SPACE TELESCOPE, MASS BUDGET, THERMAL FIGURING, COEFFICIENT OF THERMAL EXPANSION, CASTING, SUPPORT STRESSES, FLAW SIZE, STRENGTH, BRIEFING CHARTS
Report Date:
2010 Jun 01
Creation Date:
2011 Feb 23