1' Common Optics Assembly COA

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1. Common Optics Assembly (COA)
Main optics housing riveted on channel housing
(with rod) QM delivered 12.12.2003
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COA Channel housing ready for assembly and
riveting
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COA QM reveting was tested by SRON. Approved?
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Assembling the COA FM
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HIFI main optics mirrors produced by TPD Delft
(raw) and LFM Bremen 80 of flight models
delivered on 2 March 2004 Rest in May
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Concerns
None really serious ! Watch communication
betweens partners (many components, many
details)
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Concerns
None really serious ! Watch communication
betweens partners (many components, many
details)
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Concerns
None really serious ! Watch communication
betweens partners (many components, many
details)
Mirror 137
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Concerns
None really serious ! Watch communication
betweens partners (many components, many
details)
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Concerns
None really serious ! Watch communication
betweens partners (many components, many
details)
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Current status of COA FM 1. Channel housing
FM Eroding process is completed Ready for final
machining step 2. Main Optic Housing
FM Manufacturing leaving still 0.3 .. 0.6
mm Final heat treatment tbd Final machining
tbd Surface treatment at ABB end of
May 2004 Riveting at RUAG finished middle
of June 2004 Final assembly at HTS
end of June 2004 Delivery
beginning of July 2004
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2. Mixer Subassemblies (MSA) 3. Diplexer
Housings
Delay caused by eroding problems now
solved Measurements
this week Final machining tbd First delivery of
all available parts in week 20/21 2004
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Concerns
None really serious ! Delay becomes
critical Watch communication betweens partners
(many components, many details)