Monthly Progress Report April 2004

Transcription

1 Heliosiesmic & Magnetic Imager Contract #: PY-2223 Cage Code: Total Pages: 7 Monthly Progress Report April 2004 Lockheed Martin Space Systems Company Advanced Technology Center Lockheed Martin Solar & Astrophysics Laboratory (LMSAL) 3251 Hanover Street, Palo Alto, CA

2 Table of Contents 1.0 Introduction Summary Schedule and Milestones Major Activities During March Filters and Optics Mechanical Mechanisms Electrical Software I&T Thermal Major Sub-contracts CCD e2v Camera Electronics - RAL Michelson LightMachinery Structure Vision Composites Planned Activities For May Design Updates Resource Requirements Issues/Concerns...7 Page 2 of 7

3 1.0 Introduction This is the monthly progress report for the month of April 2004 of the HMI program for the progress undertaken by LMSAL under the phase C/D/E contract with Stanford. The LMSAL team is in collaboration with Stanford University on the HMI/SDO solar physics investigation being led by Professor Phil Scherrer of Stanford University. 2.0 Summary April showers bring May flowers and will hopefully hold true for HMI. The RAL team has been working very hard at getting the CCD that was received from e2v up and running with the SECCHI camera. A first photo has been received, the team will learn more in May about the performance of the waveform generator. Some other highlights this month include: the shutter life test began, the performance of the Michelson interferometer beam-splitter was excellent, the mini-brass HEB assembly was completed, the structure contract was placed, the 1553 portion of the spacecraft interface was received, and a EEE parts and materials and process control board was held. The HMI team continues to hold weekly SDO Project and instrument telecons, weekly HMI-specific telecons, nearly weekly CCD camera system telecons, weekly telecons with LightMachinery, weekly HMI status meetings, and a constant stream of internal technical meetings. 3.0 Schedule and Milestones An updated detailed schedule is submitted at the end of each month. Shown below are some key program milestones and activities, with an emphasis on those that will occur in the near term and have recently occurred. Milestone Date Notes Begin shutter test End Mar 04 Completed (started) Michelson Performance April Attended (in Canada) Review Structure Kick-off meeting April 13 Completed Review e2v data May 6-13 Review RAL progress May 6-13 IFWG May Michelson CDR June 22 Receive SM Structure Sept 04 Structure order in process HMI CDR Nov 04 (at LM) Deliver HMI to S/C Nov 06 Launch Apr 08 * Five year baseline mission * Page 3 of 7

4 4.0 Major Activities During March 4.1 Filters and Optics The primary and secondary lens quotes were reviewed with the suppliers and one supplier, Janos, overlooked some of the requirements and chose to retract their proposal and no bid. A birefringence specification was added to the drawing, a revision released and sent to the chosen supplier, Coastal Optics. A revised quotation is expected. The ISS and BDS beam-splitter drawings and statement of work were released. The request for quote and drawing package is being sent to Lightmachinery. All of the Lyot filter elements have been placed on ordered. The focus block and calibration lens drawings were released. 4.2 Mechanical The CCD orientation has been resolved. There will be two board layouts for HMI and one will be designated in common with AIA. The detector board layout drawing is being reviewed and the connector panel design is progressing. A concept design for the shielding of the flex cable is being generated. A peer review will be scheduled to complete a request for action from the Mission PDR (the date has not been set, yet). The radiation analysis model was completed and the first cases are being analyzed. The Michelson mount drawings were released and work is progressing on the oven housing drawings. The oven pre-amp layout and cover drawings are in check. Alignment mechanism drawings are progressing. The ISS mirror mount is near completion and good progress is being made on the ISS beam-splitter mount and bi-cell sensor mount. HMI welcomed a new team member, Satyam Dave, to start work in detailing the alignment mechanism. 4.3 Mechanisms The shutter life test has begun! The shutter thermal test data and the test procedure were reviewed. A couple modifications to the test program were implemented and the test started. The focus/cal wheel drawings were completed and sent to the supplier for comments. Mechanism drive electronics were requested for the mechanism testing: the schedule is being reviewed to decide on quantities and board type. 4.4 Electrical The mini-brass electronics box enclosure was received and the development bridgeboard and motherboard assembly was completed. The brass box was assembled with the interconnect board and testing has begun. The over controller out-line drawing is complete and the parts stress analysis is progressing. The HEB enclosure design has gone from a single cover to multiple covers for each board. The design is commonly used on other LM programs and simplifies the box assembly and individual board access. It also resolved the concern for connector alignment challenges. Now the board outline drawings can continue. The Page 4 of 7

5 connector pin-outs for the spacecraft simulator were submitted to the SDO team. Lastly, a common buy plan with the SDO team has been implemented. 4.5 Software The 1553 portion of the spacecraft simulator was received, integrated and tested. There was an issue in sending commands, but it was resolved and the simulator is running with the LMSAL EGSE. The SDO team members that performed the installation also provided some training of ASIST for the HMI/AIA team. The ground systems PDR was attended and several items were discussed. The independent verification and validation (IVV) matrix was reviewed and a survey on critical function tests was requested. A security plan needs to be in place by CDR and the format control document was reviewed. In the meantime, a significant milestone was achieved: the kernel and SUROM software was loaded onto the RAD6000 board. The QHSS code peer review action items were completed and the CVS control is running. The acceptance test software for the EGSE core software is running, now individual instruments will be added. 4.6 I&T Most of the hardware ordered for chamber retrofit has arrived and is being integrated. Instrument package alignment and test planning meetings have begun. 4.7 Thermal The oven thermal analysis shows that the secondary cover over the Michelsons is necessary and heater sizing and sensor locations are being determined. The front window analysis is progressing. Rose has returned and will be resuming the optics package and front window analysis. 4.8 Major Sub-contracts CCD e2v Three batches of flight CCDs have started processing. Everyone is patiently awaiting tested results of the two engineering units, which are due eminently. E2v is working to resolve a charge transfer variance across the CCD. Several team members will visit e2v in May Camera Electronics - RAL RAL has been working very hard at getting the CCD received from e2v running with the SECCHI camera. They have built a test CCD interface board and the layout is progressing at LMSAL for the flight board. The test board was completed and the CCD plugged in and we have lift off. Page 5 of 7

6 First Picture with Camera Michelson LightMachinery LightMachinery is continuing with testing of the engineering test unit beam-splitter. A preliminary test report has been received and test results looks great. They have also continued assembly on the mechanical test model and are near finished with test procedures. The CDR is now schedule for June 22 at LMSAL Structure Vision Composites The contracted was placed and a kick-off meeting was held. Work has begun on the detailed design of the structure. 5.0 Planned Activities For May 1. Continue the procurement for the optical elements. 2. Continue to work with the AIA team to organize LMSAL personnel for both programs in an optimal manner. 3. Continue work on mechanical and electrical drawings and detailed design. 4. On a routine (mostly weekly) basis continue to participate in telecons with the complete SDO group, the combined HMI/AIA-Project specific telecons, CCD Working Group telecons, Light Machinery telecons, BAE telecons; and to conduct HMI team meetings as well as specific meetings on Electronics/ Software, Filters, and Mechanical topics. 6.0 Design Updates As previously mentioned the CCD printed circuit board and housing layout design trade study has been resolved with two board layout designs. This allows for the shortest cable lengths and more simplified cable routing. The design is maturing. Also, the HEB cover design was reviewed and a multiple cover design selected to simplify assembly. Page 6 of 7

7 7.0 Resource Requirements The project has decided that an acoustics test is required and the mass simulator must meet the contamination requirements of the ICD as flight. The monthly mass and power status reports are provided as separate files. 8.0 Issues/Concerns Now that AIA has finished with the PDR, more attention has been given to HMI, common designs are progressing. Waiting test results of the CCD. Waiting test results of the camera performance testing with the CCD. The existing version of the SMCSLite chip that is used in the CEB and in the Camera Interface board needs to undergo radiation testing to verify it is acceptable, and we need to keep on top of whether the newer version of this chip will be available in time for our programs. Page 7 of 7

8 John Miles Allocation Basic Mass Margin LMSAL Doc. # HMI00157K Components Mass (kg) # Mass/Unit Status/Basis Notes ICD Allocation HMI Electronics Box (HEB) Estimate includes 0.2 kg for fasteners 25% HMI Optics Package (HOP) Estimate includes 0.2 kg for fasteners 66% HMI Harness (Harness) Estimate Presumes length of 4 meters 9% 6.39 Total 71 Revision History (Most Recent = Current) 06-May Apr Mar Nov Oct-03 5-Sep-03 7-Aug Jul Jun May Apr Mar-03 Proposal HMI Monthly Mass Report HOP design maturity growth (0.4 kg net decrease): Detector Assy, Focus Wheels, ISS Sensor, Structure HOP design maturity growth (0.67 kg net increase): CEB, ISS, Detector Assy, Telescope, Oven, Structure Design maturity growth, front door design and oven design HOP increase reflects larger/heavier CEBs and enlarged structure assy. HEB increase reflects complete modeling of the HEB structure and shielding on power section. Allocation expected to increase to 71 kg with the approval of CCR-30 but that is not reflected in this report. Harness Mass doubled in accordance with new SDO estimate of Harness length (changed from 2 to 4 meters). HEB and HOP Estimates unchanged from last month. Estimate unchanged from last month. Allocation increased 2 kg per CCR-016, see SDO doc 464-SYS-SPEC-0007B_SDO Mass Budget.xls, dated 12 August 2003 NOTE: SDO doc 464-SYS-SPEC-0007B should show 17 kg for the HEB and 35.3 kg for the HOP vs. 16 and 36.3 respectively. Includes 2.6 kg increase (unapproved) to bring the CCD shielding to 1.5 cm Al equivalent in all directions. No CEB increase included. Unchanged from last month, trade 5a verbally approved by SDO, presume allocation will increase soon. This report does not include possible mass increases currently being discussed in various Camera Electronics Box options. Unchanged from last month, trade 5a verbally approved by SDO, presume allocation will increase soon. HEB value reflects the 2 kg increase from reliability Trade "5a", no change to the Harness or OP from last month Updated names of components, no changes in mass estimates or allocations 53.2 kg Allocation made by SDO Project Office - D. Ward Estimate = 55 kg

9 HMI Monthly Power Report John Miles LMSAL Doc. # HMI00158J # Estimate Power /unit (W) Nominal / Operations Mode Estimated Power (W) Allocated Power (W) Power Margin (W) # Estimate Power /unit (W) Eclipse Mode Estimated Allocated Power (W) Power (W) Power Margin (W) # Estimate Power /unit (W) Orbit Raising Mode Estimated Allocated Power (W) Power (W) Power Margin (W) # Estimate Power /unit (W) Launch Mode Estimated Allocated Power (W) Power (W) Power Margin (W) TBD TBD TBD TBD Revision History (Most Recent = Current) 05-May-04 Updated estimates for camera I/F (including second FPGA), HRI, limb tracker, PZT driver, PCI/bridge/1553, and housekeeping boards in HEB. Added estimates for limb tracker pre-amp, PZT, and mechanisms in HOP. Overall nominal ops power dropped by 1.8 W. 09-Apr-04 Estimate unchanged from last month. Detailed power reassessment is to be carried out this month. 17-Nov-03 Estimate unchanged from last month. For reference, Allocations and Margins shown in green italics are those proposed in CCR Oct-03 Estimate unchanged from last month. 05-Sep-03 Estimate unchanged from last month. Allocations for Nominal/Operations and Eclipse Mode have increased 1 Watt (in each mode) per CCR-016, see 464-SYS-SPEC-0008A_SDO Power Budget, dated 12 August Jul-03 This report, prepared for Aug. 2003, is unchanged from May 2003, Received verbal approval of preferred reliability CCR, presume allocation will increase accordingly This report does not include possible power increases currently being discussed in various Camera Electronics Box options. 10-Jul-03 Unchanged from May 2003, received verbal approval of preferred reliability, presume allocation will increase accordingly This report does not include possible power increases currently being discussed in various Camera Electronics Box options. 04-Jun-03 Unchanged from May 2003, received verbal approval of preferred reliability, presume allocation will increase accordingly 09-May-03 Increased Operations and Eclipse Power by 1 Watt to reflect "preferred" reliability configuration of the HEB 04-Apr-03 Increased Nominal Power allocation by 1 Watt per D. Ward telecon. Added allocation columns for all modes. For the Orbit Injection Mode have presumed survival heaters and initial CCD decontam heaters only. For the Launch Mode have presumed all HMI power and heaters are off until Orbit Injection Mode begins. Estimates same as HMI SCR presentation. 26-Mar-03 Added allocations, considering revising thermal so that all numbers in one spot - D. Ward