PROGRESS REPORT
August 23 – September 22, 2000
Accomplishments / Status
Summary: Overall, 32% of the work from the Restart Review to delivery has been completed. The primary focus of this reporting period has been 1) solid modeling design and deflection analysis of the Post-Slit Optical Bench, 2) fabrication bids for the benches, 3) designing of the Slit/Decker mechanisms, 4) solid model design of the Prism, Grating and Camera Turrets, 5) 2D design of the Filter Wheel mechanism, 6) fabrication of the Environmental Cover mechanism and 7) fabrication of the motor drive assembly.
Next
Milestone:
The next major project milestone is the release of the Pre-Slit optical bench
for fabrication on September 29, 2000.
Earned
Value:
BCWS
$ 1,744,772
SPI 0.53
BCWP $
928,109
CPI
0.91
ACWP $ 1,017,466
Project
Management:
(35% completed) The project plan
has again been revised to reflect changes in the work flow on benches and
mechanisms and can be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/
under Management, Planning. The
scheduled delivery date of the completed GNIRS instrument has not changed.
Systems
Engineering:
(99%) The activity in work included 1) structural analysis, and 2) systems
engineering input to the design process. The
Project Scientist with part time support from a staff support scientist is
assigned to this task.
The
NASTRAN structural analysis was completed on August 15.
Earl Pearson has been tasked with using a special FORTRAN program
developed by himself to merge the NASTRAN global coordinate data with the ZEMAX
local coordinate ray trace data, to determine beam position on the detector as a
function of bench deflection. These
results will be used to determine minor stiffening modifications to the
Post-Slit bench.
A
2.54:1 model of the optical bench has been constructed to facilitate wiring and
cable layout/routing, fit checks, etc.
Mechanical
Design: (23%)
Activities included optical bench solid modeling, OIWFS detail fabrication
drawings, slit/decker mechanism design, camera design, grating turret design,
prism turret design, and filter wheel design.
The
Slit/Decker mechanism assembly 3D design is 95% complete.
Camera
Mechanism. The camera drive spindle
hub 2D drafting is 97% complete. The
rest of the camera assembly components are on hold.
Filter
Wheel Assembly mechanism. 2D drafting is in process and should complete this
month.
The
Acquisition Mirror mechanism. 2D
drafting is 35% complete. This
assembly is on hold.
The
Pre-Slit and Post-Slit bench assemblies are in 2D detailing as needed for
fabrication. Vendors have been
selected for fabricating these benches. The
main hog-out and cover for the Post-slit bench will be fabricated in-house.
Mechanical
Fabrication:
Activities included delivery and cutting of the 12” Aluminum plate,
environmental cover fabrication, and motor drive assembly fabrication.
OIWFS
Bench, Post-Slit Optical bench and Collimator Mount. The wavefront sensor bench has been released for fabrication
to the NOAO Instrument Shop.
Environmental
Cover Assembly fabrication is complete and the unit is in assembly and warm
bench test.
The
Motor Drive Assembly fabrication is complete.
Assembly is 8% complete..
Electronics
Design:
(10%) Activities in this work package include 1) electrical and mechanical
design and construction of a simulator for use in software testing, 2) dewar and
mechanism wiring design definition, 3) array interface wiring definition, 4)
cold stationing definition and 5) re-planning of the electronics work flow.
Work
on defining dewar wiring, and ALADDIN array interfacing details and detailed
mechanism wiring is in process.
A
meeting at IFA with Ev Irwin has been scheduled for the week of October 16 to go
over the details of the OIWFS wiring interface. The GNIRS EE, Jerry Penegor will attend this meeting.
Software
Development:
(23%) This effort has been re-planned to better interface with the electronics
effort. Motor testing using the software test fixture was the only activity this
month. The Components Controller
Software is 37% complete, Lab support software is 6% complete, and the high
level Epics software is 1% complete.
Procurement:
(35%) Major activities in this Work Package included optics work at RMI,
acquiring and cutting the 12” Aluminum plate, and monitoring vendor
fabrication.
Problems / Solutions
No
items
Key Personnel
An Electronics Technician has been hired and will start work on October 9th. A Drafting Technician presently assigned to the SOLIS project will be joining the GNIRS team on October 30th.
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