1. common optics assembly (coa) main optics housing riveted on channel housing (with rod) qm...

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

HIFI/Herschel

Common Optics Assembly (COA)Mixer Subassemblies (MSA)

Diplexer Housings

Mechanical/optical part of ETH contribution

Manufactured by HTS, Wallisellen (Switzerland), TPD Delft, LFM Bremen, and strongly supported by SRON


1. Common Optics Assembly (COA)

Main optics housing riveted on channel housing (with rod) QM delivered 12.12.2003

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, ZürichCOA: Channel housing ready for assembly and riveting


COA:QM reveting was testedby SRON. Approved?


Assembling the COA FM


HIFI main optics mirrors produced byTPD Delft (raw) andLFM Bremen

80% of flight models deliveredon 2 March 2004

Rest in May


Concerns

None really serious !

Watch communication betweens partners (many components, many details)


Concerns



Mirror 137


Concerns




Current status of COA FM:

1. Channel housing FMEroding process is completedReady for final machining step

2. Main Optic Housing FMManufacturing leaving still 0.3 .. 0.6 mmFinal heat treatment tbdFinal machining tbdSurface treatment at ABB: end of May 2004Riveting at RUAG finished: middle of June 2004Final assembly at HTS: end of June 2004Delivery beginning of July 2004


2. Mixer Subassemblies (MSA)3. Diplexer Housings

Delay caused by eroding problems: now solvedMeasurements: this weekFinal machining tbd

First delivery of all available parts in week 20/21 2004


Concerns


Delay becomes critical


1. common optics assembly (coa) main optics housing riveted on channel housing (with rod) qm...

Documents

riveting slide

coa fm slide

critical watch communication

final assembly

details mirror

channel housing ready

week final machining

final machining step