GNIRS PROGRESS REPORT

May 21– June 20, 2002

           Accomplishments / Status

  Summary:  92% of the work from the Restart Review to delivery has been completed.  Progress was made on radiation shield assembly, bench assembly and wiring, and mechanism cold testing.

The Dewar vacuum checks were successfully completed. Delivery of the remaining SR camera lens is expected in late June, and will be integrated into the camera in early July. Flexure testing has been delayed until mid-July due to late shipment and installation of the flex rig.

The investigation into the cause of the Slit mechanism cold test failure has been completed. The cause was primarily due to bearing failure. The bearings are in the process of being replaced with tungsten-sulfide coated bearings and the mechanism will be cold tested in the last week of June. Because of the nature of the bearing failure, the relevant bearings in the other cold mechanisms are also being replaced.

All testing is scheduled to complete and the instrument shipped to Chile in late November. All planned schedule contingency has been used.

Next Milestone: The next major project milestones are:
                                               
                                                - Slit mechanism cold testing completion in June
                                                - Bench installation in July
                                                - Thermal Distribution Assembly installation in June
                                                - Flexure testing in mid-late July

  Earned Value:

 

October

November

December

January

February

March

April

May

June

BCWS

$3,145,000

$3,192,781

$3,236,748

$3,304,286

$3,344,496

$3,413,125

$3,462,160

$3,504,878

$3,546,177

BCWP

$2,573,084

$2,617,408

$2,884,471

$2,911,411

$2,930,888

$2,970,031

$3,035,216

$3,156,912

$3,173,288

ACWP

$2,938,004

$3,122,731

$3,313,415

$3,383,383

$3,453,168

$3,537,018

$3,756,257

$3,858,289

$3,956,665

SPI

0.82

0.82

0.89

0.88

0.88

0.87

0.88

0.90

.89

CPI

0.88

0.84

0.87

0.85

0.85

0.84

0.81

0.82

.80

This table reflects planned and actual charges to the project as of June 20, 2002.  We have spent $1,514,255 in capital to date.

 Project Management: (91% complete)

The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. The current delivery of the GNIRS instrument is November 29, 2002.

  Systems Engineering: (100% of planned work)

  Mechanical Design, Fabrication, Assembly and Test: (96% overall) The major activity in this work package has been mechanism testing and rework.

 

Mechanisms: (96% complete overall).


 

March

April

May
June
Status

Slit

99%

99%

99%

90%

Rework and Cold test


 

Benches: (100% complete overall).  Benches are complete.  Bench wiring is in process, but is considered an integration activity.

Fixed Assemblies: (89% complete overall).   Only the Thermal Distribution Assembly is left, which will be closed out when it is sized and installed into the dewar.

 

March

April

May
June
Status

Cryo Cooler

90%

94%

100%

100%

Complete

Thermal Distribution Assembly

75%

75%

75%

90%

Cleaning and Assembly

LN2 Pre-Cool

87%

83%

100%

100%

Complete

   Electronics: (89% complete overall).  Basic work is complete.

 

March

April

May

June

Status

IfA Electronics Box

33%

33%

33%

57%

In check out

External Cabling
(Bulkhead to TE)

36%

36%

36%

-

Used in mechanism test; need only termination at one end

Bulkhead Internal Cabling

58%

58%

69%

-

Assembly

Documentation

95%

95%

95%

95%

 

  Software Development: (100% complete overall).  The work includes adjustments to the software during testing

 

May

June

Array and Instrument Controller checkout

88%

90%

   Alignment and Integration: (46% complete overall)

 

March

April

May

June

Telescope Simulator

69%

88%

93%

99%

I.    Dewar and Structure

-

-

-

-

II.   Mechanical Integration

-

43%

43%

43%

III. Warm Tests

-

-

-

9%

IV.  Cold Tests

-

-

-

-

  Deliverables: (54% complete overall)

Work in this area has focused on the outlines for the Hardware and Software Maintenance manuals.

 

March

April

May

June

Comments

Instrument Hardware

-

-

-

-

 

Training

-

-

-

-

 

Manuals

15%

15%

16%

22%

Manual outlines complete.  Draft Software manual 67% complete

As-Built Fabrication Drawings

-

-

-

-

 

  Procurement: (97% complete overall).

 

Mar

April

May

June

Comments

Optics

98%

99%

99%

99%

SRC camera lens, simulator optics still outstanding

 

 

 

          Problems / Solutions

Flexure rig delay and slit mechanism rework have caused a delay in the start of integration.

             Key Personnel

 

No changes.

 

 

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