Thermo/structural design considerations to achieve the Large Space Telescope line-of-sight requirementsThe Large Space Telescope (LST) which is scheduled for launch in 1982, is a long-life, precision-pointing, earth-orbiting satellite requiring a structural system that provides high dimensional stability, minimum thermal distortion, and minimum response to onboard dynamic environments (e.g., reaction wheels). The results of a detailed thermostructural finite element computer analysis show that the telescope structure, even though fabricated from a material with a zero coefficient of thermal expansion, must be isolated from the external structure by a three-point support (flex joints or spherical bearings will accomplish this). Other thermo/structural analysis of the metering structure showed that second-order deformations have a significant effect on the alignment of the primary and secondary mirrors.
Document ID
19760029929
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Tenerelli, D. J. (Lockheed Missiles and Space Co., Inc. Sunnyvale, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
August 1, 1975
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AAS PAPER 75-190
Meeting Information
Meeting: Meeting on Space Shuttle Missions of the 80''s