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

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

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, Zürich

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

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

COA:QM reveting was testedby SRON. Approved?

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Assembling the COA FM

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

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

80% of flight models deliveredon 2 March 2004

Rest in May

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Watch communication betweens partners (many components, many details)

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Watch communication betweens partners (many components, many details)

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Watch communication betweens partners (many components, many details)

Mirror 137

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Watch communication betweens partners (many components, many details)

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Watch communication betweens partners (many components, many details)

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

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

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

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

Eidgenössische Technische Hochschule ZürichSwiss Federal Institute of Technology, Zürich

Concerns

None really serious !

Delay becomes critical

Watch communication betweens partners (many components, many details)