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NIRCam News
January 22, 2007
Previous editions are available in the archive.

 

 

Tuesday Telecon

Dial-in: 877-951-3250, Passcode 108321

Date

Meeting Agenda

GSFC Location

Tuesday, Jan 23

16:00 EST

Electrical RTCs to ICD NIRCam MICD EO8 Review

Bld 22, room C399

Thursday, Jan 25

11:00 EST

KM structural analysis approach

Bld 22, room 398

Tuesday, Jan 30

16:00 EST

Mechanism Micro-dynamics Measurement and NIRCam MICD EO8 Review

Bld 22, room C365

Tuesday, Feb 7 

16:00 EST

TBD

Bld 22, room C399

 

 

Announcements

Stay tuned for an agenda for the February NIRCam Long-Lead GSE Review.

 

 

NIRCam Calendar

Date

Event

Details

1/29/07

Time:  2 pm EST

NIRCam Monthly

GSFC, Bld 22 Rm 399

Jan 30-31, 2007

JWST T-NAR

GSFC

Feb 8, 2007

FOV Discussion

Ball, Boulder Co

Feb 15, 2007

NIRCam Long-Lead GSE Review

Palo Alto

Feb 22, 2007

NIRCam Monthly

Camarillo

Feb 28-30, 2007

Fault Mgmt/ Ops / FSW Summit

GSFC

Mar 22, 2007

NIRCam Monthly

Palo Alto

Mar 28-29, 2007

Optics Summit

Greenbelt, NGST ECO

Apr 26, 2007

NIRCam Monthly

Palo Alto

May 22, 2007

NIRCam Monthly

Palo Alto

May 29, 2007

NIRCam GSE CDR

Palo Alto

June 11-14, 2007

JWST Workshop

Dublin, Ireland

 

 

Accomplishments of Week Ending 1/16/07

1) Singlet lens mounting issue is almost completely resolved. A

Test Readiness Review was held which covered the modified mount

and procedure (0.5mm gap at bottom of mount was removed, order

of tightnening bolts revised, and a different torque wrench has

been selected) with intent of proceeding with mounting and testing

this week.

 

2) Analysis of data on the passive friction device shows no

torque increase between room temperature and cryo. Position

repeatability test will be performed in early Feb.

 

3) Filter wheel assembly was the subject of an internal review

and the revised design now passes both the 1st freq spec and the

design limit loads on the mounting flexures.

 

4) Closure has not been reached with Barr on how to measure the

transmitted wavefront error and telecons are being held every day to

resolve this issue.

 

 

NIRCam Needs (from Dec 19 MSR)

Need

Date Assigned

Assigned to

ECD

Status

Need PSD information and details of mirror segments for higher fidelity coronagraphic modeling

8/31/2006

Mark Clampin

12/1/2006

Ritva to provide delivery date, discuss at Optical Summit meeting on March 28 and 29

Changes to SIIP/Strut pad dimensions

10/31/2006

John Crow

 

Issue resolved – ICD change in work

Any changes to PAR?

10/31/2006

Pam Davila

 

work between B. Bos and S. Somerstein ongoing.

Harness and thermal strap loads on bench & struts

8/31/2006

John Crow

 

 in process.  Need FPE xsect info

ISIM CCDH FSW Rev 6.0 installed on SIDU including Spacewire interface and function call for ASIC micro-codes

8/31/2006

Mark Voyton

 

Not until Jan 2007.  Scott Lambros to discuss with Pam S.

Resolution of Rogue Path

8/31/2006

Pam Davila

 

Optical Summit meeting on March 28 and 29

Resolve open TBXs in IRD & ISIM Reqs Doc

8/31/2006

Julie

 

 See RTC list below

Resolve open RTCs in IRD, ISIM Reqts, ICD

8/31/2006

Julie

 

See RTC list below

Define intermediate thermal stationing of harnesses

9/26/2006

Ray L

 2/13/07

 Need to schedule meeting to discuss thermal budget of ICE harnesses.

Clarify workmanship vibe levels

9/26/2006

John Crow

 

complete

ISIM analysis of NIRCam EOL contamination levels

10/31/2006

Ray Levesque

 Provide schedule by 1/31/07

Pending further inputs from NIRCam.  JVC has tentative schedule.

Envelope Notch for ETU cones of light

10/31/2006

John Crow

 Review EO8 on 1/16/07

notch identified – need ICD change

KM Strut Design

10/31/2006

John Crow

 

need allowable forces/moments from NIRCam team.  NIRCam needs schedule in Project format.

 

 

ISIM Needs

Need

Date Assigned

Assigned to

ECD

Status

KM Strut Design

 

 

 1/16/07

Need completed KM Requirements Document , Scott to talk to J. Crow and J. Johnston on Design Methology.

Step file of FPE ICP on bench

 

 

 

Closed

Step file of ICE box (to add this to the MICD)

 

 

 

Closed

ICD update to ICE cables section

12/25/06

Shaune Allen

1/23/07

In Process, Next meeting on Jan 23.

FPE cable cross section dimensions for routing work

 

 

1/23/07

Tony to send xsect dimensions of both cables under consideration.

Input into EOL contamination analysis

 

 

 

To be defined by Ray LeVesque

Test plan for Pathfinder Singlet test and Pathfinder triplet-beamsplitter-triplet test.

 

 

1/16/07

GSFC would like to review the test plan for the Singlet and for the pathfinder test prior to the tests.  Scott will make these plans EMs.

ROM for FPE Software Simulator

 

 

1/31/07

Scott L. to talk with Marcia

SITS to SWTS2 upgrade

 

 

1/31/07

Scott L. to discuss with Pam.

Step file of ICE Box

 

 

1/23/07

NIRCam to provide for use in IEC model.

Provide Data on Passive Friction Device Test.

 

 

1/23/07

ISIM would like to review.

 

 

Review RFAs (updated 1/19/07)

CDR RFA

Requester

Action Requested

Assignee

Status

ECD

OBA RFA-3

John Johnston

Peel & shear test, analysis of bonded joints.

Alison Nordt

Alison preparing response to John's review questions.

Aug-06

OBA RFA-4

John Johnston

Assess MS with FS = 1.5.

Alison Nordt

Alison preparing response to John's review questions.

Aug-06

OBA RFA-8

Richard Vassar

SE to do independent tolerance analysis

Kevin Bock

Kevin auditing NIR-EM-0152A.  Kurli analyzed optic sensitivity.

Dec-06

SLB RFA-3

Pam Davila

Worst case clearance analysis.

Brent Biggs

Complete clearance analysis, document and present.

Sep-06

SLB RFA-5

Pam Davila

STOP analysis results, clearances.

Brent Biggs

Complete OTM analysis, document and present.

Sep-06

FPA RFA-3

Don Hall

Shielding temp sensor/heater cable.

Erick Young

Build a simplified SPICE model of the cable assembly to assess the coupling between the thermometer/heater leads and the FPA cable inside the housing.

Jul-06

I&T-II RFA-4

Bill Eichorn

Correlate warm-to-cold models.

Paul Schweiger

Bill additional request for description of Pathfinder test.