November 95

GNIRS PROGRESS REPORT

July 21– August 24, 2001

Accomplishments / Status

Summary: Overall, more than 76% of the work from the Restart Review to delivery has been completed.

The main focus of this report period has been completing fabrication of mechanisms, fabrication of major assemblies such as the Bulkhead Assembly and Dewar Shells and the mechanical design of remaining assemblies such as radiation shields. Except for the Focus Assembly, all mechanisms have completed initial fabrication and are in fit check, rework or test. The Pre-Slit and Post-Slit benches have finished fabrication and are due to be painted after fit checks are completed. Mechanism assembly and warm assembly testing is underway, but is proceeding more slowly than expected due to small part fabrication issues in nearly every mechanism that had to be corrected before assembly and warm testing could be effectively started.

The OIWFS components integration and alignment has been delayed due to some components not matching the interfaces given in the ICD, causing rework on the WFS bench. The bench modifications are being done on a low priority basis. Work on the WFS will continue on a non-interference basis with mechanism assembly and testing.

The project remains about 6 weeks behind schedule with respect to start of instrument integration. The fall 2002 delivery date is not impacted.

Next Milestone: The next major project milestone is the completion of the Bulkhead Assembly and Dewar Shells in September.

Earned Value:

	February	March	April	May	June	July	August
BCWS	$2,049,349	$2,278,192	$2,565,371	$2,732,977	$2,929,722	$2,976,073	$3,030,916
BCWP	$1,543,495	$1,694,322	$1,804.951	$1,912,351	$2,119,911	$2,182,434	$2,357,289
ACWP	$1,739,549	$1,839,301	$1,915,889	$2,031,750	$2,343,546	$2,392,603	$2,603,604
SPI	0.75	0.74	0.70	0.70	0.72	0.73	0.78
CPI	0.89	0.92	0.94	0.94	0.90	0.91	0.91

Project Management: (65% complete)

The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. The August 2002 scheduled delivery date of the GNIRS instrument has not changed.

Systems Engineering: (100% of planned work)

The main focus has been support of procurement, mechanism assembly and warm test.

Mechanical Design, Fabrication, Assembly and Test: (82% overall)

The major activity in this work package has been the 3D and 2D design of fixed assemblies and fabrication.

Mechanisms: (89% complete overall).

	Feb	Mar	Apr	May	June	July	Aug	Status
Camera	69%	77%	78%	88%	90%	91%	91%	Final Fab
Focus	24%	24%	30%	48%	59%	59%	60%	Fab
Environmental Cover	97%	99%	99%	99%	99%	99%	99%	Test (on-hold)
Acquisition Mirror	58%	68%	72%	75%	75%	75%	76%	Fab (waiting for mirror)
Slit/Decker	66%	77%	83%	85%	90%	90%	93%	Rework, Assembly/test
Filter Wheel	71%	70%	73%	78%	83%	83%	95%	Assembly/test
Grating Turret	42%	51%	72%	83%	85%	86%	89%	Fab/assembly/test
Prism Turret	48%	47%	50%	56%	76%	85%	92%	Fab/assembly/test
Motor Drives	90%	90%	100%	-	-	-		Complete

Benches: (87% complete overall).

	Feb	Mar	Apr	May	June	July	Aug	Status
Post-Slit	56%	65%	70%	-	77%	88%	94%	Fab, mods in process
OIWFS Bench	67%	67%	79%	-	86%	87%	89%	Bench mods on hold
Collimator		29%	29%	46%	62%	64%	77%	Fab
Pre-Slit bench	44%	62%	70%	81%	83%	87%	91%	Fab and assembly

Fixed Assemblies: (55% complete overall).

	Feb	Mar	Apr	May	June	July	Aug	Status
Entrance Window	96%	100%	-	-	-	-	-	Complete
Detector Mount	48%	49%	60%	67%	68%	79%	79%	Fab
Cryo Cooler	9%	16%	16%	16%	24%	49%	51%	Fab
Thermal Distribution Assembly							12%	3D Design
Bulkhead Rad Shield							1%	3D Design
LN2 Pre-Cool	4%	4%	17%	17%	84%	89%	91%	Fab
Optical Bench Gimbal Mt.	53%	53%	54%	56%	45%	85%	95%	Test
Bulkhead Assembly	11%	24%	42%	52%	55%	64%	74%	Fab
Front Rad Shield	5%	5%	5%	5%	7%	10%	10%	3D design
Rear Rad Shield							18%	3D design
Front Dewar Shell	26%	34%	37%	37%	37%	38%	66%	Fab
Rear Dewar Shell	6%	8%	21%	21%	26%	-	57%	Fab
Vertical Inst Frame	5%	6%	6%	11%	-	-	14%	2D drafting
Horizontal Inst Frame	1%	-	-	-	8%	8%	15%	2D drafting
Dewar Mount Truss	12%	12%	12%	13%	47%	47%	47%	2D drafting
Thermal Enclosure Mount	2%	7%	10%	44%	53 %	53%	58%	Fab
Handling Fixtures	25%	58%	-	68%	68%	68%	100%	Complete

Electronics: (77% complete overall)

The Instrument controller design work is essentially complete and the main activity is fabrication. The OIWFS electronic components are received and work on integrating components into the thermal enclosure has started.

		Feb	Mar	Apr	May	June	July	Aug	Status
Component Controller TE		51%	68%	71%	75%	66%	-	90%
	VME Crate	92%	100%	-	-	100%	-	-	SW testing
	Motor Drive/Cryo Cooler Crate	62%	94%	100%	-	100%	-	-	SW testing
	Internal Cabling and Connectors	12%	16%	16%	18%	90%	98%	98%
	Ancillary Cage Crate	26%	26%	26%	59%	63%	98%	98%	Anodization and reassembly
	IfA Electronics Box	-	-	-	-	-	-	30%	In check out
	Bench Thermal Controller Crate	-	-	61%	68%	94%	98%	98%	Assembly/wiring
External Cabling (Dewar to TE)		23%	23%	23%	23%	23%	23%	23%	On hold
The Dewar Warm-up Controller		37%	37%	37%	37%	37%	37%	37%	On hold; Rescheduled to later date
Dewar Electronics		-	71%	-	-	95%	-	95%
	Dewar Cold Station PCB’s	60%	60%	50%	60%	80%	80%	80%	Ready for install and fit check
	Dewar Internal Conn/Cabling	-	72%	72%	72%	96%	-	96%	On Hold
Documentation			50%	50%	50%	85%	-	95%

Software Development: (68% complete overall).

The areas in work include some testing software with the electronics crates. EPICS software is far ahead of schedule. Resources assigned to the software task are working on the Gemini Array Controller.

	Feb	Mar	Apr	May	June	July	Aug
Components Controller Software	67%	91%	91%	91%	91%	-	91%
EPICS Software	60%	69%	69%	69%	75%	-	82%
Test & DeBug	-	-	-	-	50%	-	50%

Procurement: (74% complete overall).

The major activities in this Work Package included monitoring vendor mechanical and optical component assembly fabrication.

	Feb	Mar	Apr	May	June	July	Aug	Notes
Optics	-	67%	71%	73%	79%	-	89%	Only POM and Acq mirror remain
RMI optics	100%	-	-	-	-	-		Complete
Flat Mirrors		10%	50%	50%	50%	-	99%	Fab of replica mirrors
Pupil Viewer	100%	-	-	-	-	-	-	Complete
BaF₂lenses	8%	50%	93%	75%	75%	-	75%	August completion forcast
Grating replicas	-	23%	50%	83%	86%	-	100%	Complete
Prisms	-	13%	13%	23%	74%	-	95%	Fab
Wollaston Prisms	-	-	0%	10%	40%	-	95%	Fab

Problems / Solutions

Mechanism assembly and warm test is taking longer than anticipated but is being worked vigorously.

Key Personnel

No changes.

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