PROGRESS REPORT 

December 21 – January 22, 2001

 

           Accomplishments / Status

 

Summary:  Overall, 46% of the work from the Restart Review to delivery has been completed. The primary focus of this reporting period has been 1) Post-Slit Optical Bench detailing and fabrication; 2) Focus mechanism 3D and 2D design; 3) Pre-Slit optical bench fabrication; 4) Slit/Decker mechanism fabrication; 5) Prism, Grating and Camera Turret 2D detailing; 6) Filter Wheel mechanism fabrication.

 

Next Milestone: The next major project milestones are the Mid-Fabrication Review and Quarterly Review, both on March 7^th.

 

Earned Value:     

 

                                BCWS    $ 1,798,138                                SPI        0.75

                                BCWP    $ 1,341,727                                CPI        0.84

                                ACWP    $ 1,595,701

 

Project Management: (44% completed) The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. Work is being done to prepare for integration later this year.  The August 2002 scheduled delivery date of the GNIRS instrument has not changed.

 

Systems Engineering: (100% of planned work) The activity in work included systems engineering input to the design process, primarily focus mechanism design and the LN₂ Pre-Cool system, and preparing for flexure tests which will be done in February to verify the rotary mechanism designs.

 

Mechanical Design: (44% overall including: Mechanisms 56%, Benches 53%, and Fixed Assemblies 11%).  Activities included optical bench solid modeling and detailing, focus mechanism design, grating turret design, prism turret design and detailing, and filter wheel detailing.  Also, handling fixtures for use in bench integration are being designed.

 

Mechanism completion summary:

                Camera                                    59%
                Focus                                       23%

                Environmental Cover             96%

                Acquisition Mirror                51%

                Slit Decker                               64%

                Filter Wheel                            60%

                Grating Turret                         39%

                Prism Turret                             37%

                Motor Drives                           74%

 

All mechanisms are in 2D design or in fabrication except the Camera, which has one camera in 3D design. 

 

Detailed status:

Camera mechanism is in various stages of 3D and 2D design and fabrication:

                                Camera top Assembly:                87%

                                Short Red Camera:                90% complete, fabrication 75% complete

                                Short Blue camera:                33% complete, 2D drafting 50% complete

                                Long Red Camera:                14% complete, 2D drafting 20% complete

                                Long Blue Camera:                8% complete, 3D design 13% complete

                                Camera drive spindle Hub:        82% complete, fabrication 61% complete

Focus mechanism:                          3D design 95% complete

Environmental cover assembly:                 in test

Acquisition mirror mechanism:                 fabrication 2% complete

Slit-Decker mechanism:                          fabrication 70% complete

Filter wheel mechanism:                          fabrication 10% complete

Grating turret mechanism:                  2D detailing 17% complete

Prism turret mechanism:                          fabrication 4% complete

Motor drive assemblies:                           assembly 10% complete

 

Benches:

 

The Post-Slit bench is 59% complete overall, fabrication started.

The OIWFS bench is 100% complete.

The Collimator housing is 26% complete overall, and is ready to begin 2D design.

The Pre-Slit bench consists of the POM and Offner assembly.  The POM is 49% complete with fabrication at 23%.  The Offner is 34% complete with fabrication at 20% complete.

 Electronics: (58%) The component controller thermal enclosure VME crate is complete and has been tested.  Dewar and shield interface PCB’s are being fabricated at a vendor.

 

Software Development: (27%) The Components Controller Software is 29% complete, lab support software is 6% complete, and the high level Epics software is 1% complete.  The next phase is actual testing of the component controller code, which will test motor drive and mechanism status and position sensing.

 

Optics:  11 of 14 RMI camera lenses and windows have been completed and accepted, with three remaining to be inspected and coated. 

 

A new contract has been let to Janos for the four BaF₂ lenses for the short red and blue cameras. 

 

Grating replicas have been ordered.

 

Prism drawings are complete and currently out for quote to several vendors.

 

Procurement: (52%) Major activities in this Work Package included optics work at RMI, contracting with Janos for the four BaF₂ lenses, obtaining quotes for the prisms and monitoring vendor fabrication.   Quotes are also being obtained for a clean room tent for use during assembly and integration.

 

            Problems / Solutions

 The OIWFS component late delivery will impact the project.  We have no information on when these parts will be provided.

             Key Personnel

 

No changes.

 

 

 

 

 

 

 

 

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