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Collection:
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NASA Image eXchange Collection
Collection
NASA Image eXchange Collection
Collection
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Title:
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LDEF (Flight), S0050 : Investigation of the Effects of Long-Duration Exposure on Active Optical Syst
Title
LDEF (Flight), S0050 : Investigation of the Effects of Long-Duration Exposure on Active Optical Syst
Title
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Description:
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LDEF (Flight), S0050 : Investigation of the Effects of Long-Duration Exposure on Active Optical System Components, Tray E05 The flight photograph was taken from the Orbiter aft flight deck during the LDEF retrieval and prior to berthing the LDEF in the Orbiter cargo bay. The Active Optical System Component Experiment (S0050) contained 136 test specimen located in a six (6) inch deep LDEF peripheral experiment tray. The complement of specimen included optical and electro-optical components, glasses and samples of various surface finishes. The experiment tray was divided into six sections, each consisting of a 1/4 inch thick chromic anodized aluminum base plate and a 1/16th inch thick aluminum hat-shaped structure for mounting the test specimens. The test specimens were typically placed in fiberglass-epoxy retainer strip assemblies prior to installation on the hat-shaped mounting structure. Five of the six sections were covered by a 1/8 inch thick anodized aluminum sun screen with openings that allowed 56 percent transmission over the central region. Two sub-experiments, The Optical Materials and UV Detectors Experiment (S0050-01) consist of 15 optical windows, filters and detectors and occupies one of the trays six sub-sections and The Optical Substrates and Coatings Experiment (S0050-02 ) that includes 12 substrates and coatings and two secondary experiments,The Holographic Data Storage Experiment (AO044) consisting of four crystals of lithium niobate and ThePyroelectric Infrared Detectors Experiment (AO135) with twenty detectors, are also mounted in the integrated tray. The experiment structure was assembled with non-magnetic stainless steel fasteners. The experiment hardware appears to be intact with no apparent damage. The excess blue color in the photograph makes a detailed assessment of color changes difficult. The paint dots on the tray clamp blocks, initially white, appear to have darkened and tray flanges appear discolored. The experiment sun screens and base plate also appear discolored. The exposed experiment test specimen and their fiberglass-epoxy mountings appear to have survived the mission with minimum degradation.
Description
LDEF (Flight), S0050 : Investigation of the Effects of Long-Duration Exposure on Active Optical System Components, Tray E05 The flight photograph was taken from the Orbiter aft flight deck during the LDEF retrieval and prior to berthing the LDEF in the Orbiter cargo bay. The Active Optical System Component Experiment (S0050) contained 136 test specimen located in a six (6) inch deep LDEF peripheral experiment tray. The complement of specimen included optical and electro-optical components, glasses and samples of various surface finishes. The experiment tray was divided into six sections, each consisting of a 1/4 inch thick chromic anodized aluminum base plate and a 1/16th inch thick aluminum hat-shaped structure for mounting the test specimens. The test specimens were typically placed in fiberglass-epoxy retainer strip assemblies prior to installation on the hat-shaped mounting structure. Five of the six sections were covered by a 1/8 inch thick anodized aluminum sun screen with openings that allowed 56 percent transmission over the central region. Two sub-experiments, The Optical Materials and UV Detectors Experiment (S0050-01) consist of 15 optical windows, filters and detectors and occupies one of the trays six sub-sections and The Optical Substrates and Coatings Experiment (S0050-02 ) that includes 12 substrates and coatings and two secondary experiments,The Holographic Data Storage Experiment (AO044) consisting of four crystals of lithium niobate and ThePyroelectric Infrared Detectors Experiment (AO135) with twenty detectors, are also mounted in the integrated tray. The experiment structure was assembled with non-magnetic stainless steel fasteners. The experiment hardware appears to be intact with no apparent damage. The excess blue color in the photograph makes a detailed assessment of color changes difficult. The paint dots on the tray clamp blocks, initially white, appear to have darkened and tray flanges appear discolored. The experiment sun screens and base plate also appear discolored. The exposed experiment test specimen and their fiberglass-epoxy mountings appear to have survived the mission with minimum degradation.
Description
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Date:
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01.12.1990
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Credit:
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facet_what:
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Sun
facet_what
Sun
facet_what
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facet_what:
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Electro
facet_what
Electro
facet_what
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facet_where:
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Langley Research Center (LaRC)
facet_where
Langley Research Center (LaRC)
facet_where
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facet_where:
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Washington, D.C.
facet_where
Washington, D.C.
facet_where
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facet_when:
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01-12-1990
facet_when
01-12-1990
facet_when
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facet_when_year:
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1990
facet_when_year
1990
facet_when_year
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Media:
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IMAGE
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ID:
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EL-1994-00679
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Other ID:
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L90-10413 S32-77-050
Other_ID
L90-10413 S32-77-050
Other ID
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UID:
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SPD-NIX-EL-1994-0067 9
UID
SPD-NIX-EL-1994-0067 9
UID
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orignial url:
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orignial_url
orignial url
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