GNIRS
PROGRESS REPORT
March 23–
April 23, 2002
Accomplishments / Status
Summary: 91% of the work from the Restart Review to delivery has been completed. Progress was made on radiation shield fabrication, bench wiring, and mechanism assembly rework and cold testing.
Fabrication is technically complete. Any remaining fabrication will be considered part of assembly rework or part of the integration process. All radiation shields fabrication is complete, with delivery of the last active shields due in the last week of April.
The Camera Assembly has been installed into the post-slit bench. It was discovered that one of the lenses in the short red camera was fabricated using the wrong material and is currently being remade. Delivery is expected in May, and the lens will be integrated into the camera when the instrument is opened to adjust collimator flexure compensation, following flexure testing in June.
All mechanisms have completed cold testing except the Slit and Focus mechanisms. The Slit mechanism is currently (mid-April) in cold testing and the Focus assembly will follow in late April.
Wiring of the benches is in process, and is nearly complete.
The Collimator Assembly is complete and is completing optical testing. It is ready for installation into the post-slit bench.
All testing is scheduled to be complete in November and the instrument will be shipped to Chile on November 29th. This slip in delivery is due to mechanism testing taking longer than planned. All planned contingency, except for the 4th cold cycle, has been now used.
Next
Milestone: The next major
project milestones are:
- Completion of mechanism testing by May 1st
- Flexure testing starting near the end of May, subject to facility
being ready
Earned Value:
| |
September | October | November | December | January | February | March | April |
|
BCWS |
$3,085,811 |
$3,145,000 |
$3,192,781 |
$3,236,748 |
$3,304,286 |
$3,344,496 |
$3,413,125 |
$3,462,160 |
|
BCWP |
$2,526,319 |
$2,573,084 |
$2,617,408 |
$2,884,471 |
$2,911,411 |
$2,930,888 |
$2,970,031 |
$3,035,216 |
|
ACWP |
$2,762,963 |
$2,938,004 |
$3,122,731 |
$3,313,415 |
$3,383,383 |
$3,453,168 |
$3,537,018 |
$3,756,257 |
|
SPI |
0.82 |
0.82 |
0.82 |
0.89 |
0.88 |
0.88 |
0.87 |
0.88 |
|
CPI |
0.91 |
0.88 |
0.84 |
0.87 |
85. |
85. |
0.84 |
0.81 |
This table reflects planned and actual charges to the project as of April 19, 2002. The team has spent $1,477,859 in capital to date.
Project Management: (83% 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 2D design of radiation shields, fabrication, mechanism testing and rework.
Mechanisms: (98% complete overall).
|
|
March |
April |
Status
|
|
Focus
|
91% |
99% |
Ready
for cold test |
|
Acquisition
Mirror |
99% |
99.9% |
Cold
test complete – rework adjustments |
|
Slit |
99% |
99% |
Cold
test |
Benches: (100% complete overall). Benches are complete. Bench wiring is in process, but is considered an integration activity.
Fixed Assemblies: (91% complete overall). The Radiation Shields are the pacing items in fixed assemblies.
|
|
March |
April |
Status
|
|
Cryo
Cooler |
90% |
94% |
Assembly |
|
Thermal
Distribution Assembly |
75% |
75% |
Assembly |
|
LN2
Pre-Cool |
87% |
83% |
Assembly |
Electronics: (89% complete overall). Basic work is complete. Wiring of the main bench is near complete. Bulkhead wiring is delayed until components are assembled onto the assembly.
|
|
March |
April |
Status |
| IfA
Electronics Box |
33% |
33% |
In
check out |
|
External
Cabling |
36% |
36% |
Used in mechanism test; need only termination at one end |
|
Bulkhead
Internal Cabling |
58% |
58% |
Waiting
for Bulkhead assembly |
|
Documentation
|
95% |
95% |
|
Software Development: (90% complete overall). The areas in work include testing and adjustments to the Component Controller software during mechanism testing and working on the EPICS software.
|
|
March |
April |
Comments |
|
EPICS
Software |
99% |
100% |
Further testing during integration testing |
Alignment and Integration: (39% complete overall)
|
|
March |
April |
|
Telescope
Simulator |
69% |
88% |
|
I.
Dewar and Structure |
- |
- |
|
II.
Mechanical Integration |
- |
43% |
|
III.
Warm Tests |
- |
- |
|
IV.
Cold Tests |
- |
- |
Deliverables: (48% complete overall)
Work in this area has focused on the outlines for the Hardware and Software Maintenance manuals.
|
|
March |
April |
Comments |
|
Instrument
Hardware |
- |
- |
|
|
Training
|
- |
- |
|
|
Test
plans |
99% |
100% |
Two manual outlines complete |
|
Manuals |
15% |
|
|
|
As-Built
Fabrication Drawings |
- |
- |
|
Procurement: (95% complete overall).
|
|
March |
April |
Comments |
|
Optics |
98% |
99% |
SRC
camera lens, simulator optics still outstanding |
Problems
/ Solutions
Completion of mechanism testing has taken longer than planned resulting in loss of remaining schedule contingency and slipping of ship date to end of November.
Key Personnel
No
Changes
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|
|
|
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950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726,
Phone: (520) 318-8000, Fax: (520) 318-8360