# Presentation: 173210

## MONTHLY STATUS REVIEW 

**MONTHLY STATUS REVIEW**** **
**EOS ICE, CLOUD & LAND ELEVATION**
** ****SATELLITE (ICESat) PROJECT**
**Code 425**
**   ****	****   ****Project Scientist:                          Dr. J. Zwally**** ****/**** ****971**
**	****   ****Project Manager:                          Joseph Dezio**
**	****   ****Deputy Project Manager:             Gregory Smith**
**	****   ****DPM**** ****/**** ****Resources:                          Linda Greenslade**
**	****   ****Instrument Development:            Dr. J. Abshire**** ****/**** ****924**
**	****   ****Ground System Development:    ESDIS**** ****/**** ****423**
**	****   ****Spacecraft Contractor:                 Ball**

**June 14, 2001**

## ICESat PROJECT SUMMARY

**ICESat PROJECT SUMMARY**
**STATUS AS OF:  5/31/01**

_**LEGEND**_

**Good Shape**

**Minor Problem**

**Major Problem**

**Program Management**

**Subcontracts**

**Spacecraft I&T**

**Observatory I&T**

**Subsystems**

**Systems Engineering**

**R&D Budget**

**Procurement**

**Workforce**

**Travel**

**Launch Vehicle**

**Launch Site (VAFB)**

**Ground SYS**** ****/**** ****OPS (EOS)**

**GLAS**

**Technical         Cost          Schedule        Overall**

** ****MAR  APR  MAY**

**Spacecraft Bus:**

**Prime**

**Major Interfaces**

**Resources**

**Instruments**

**Business**

**Science**** ****/**** ****Operations**

**Summary Assessment**

**Y**

**R**

**G**
**G**
**G**
**G**

**Y**

**JPL GPS Receivers**

**G**
**G**
**G**
**G**

**Y**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

**GLAS**

**Y**

**Y**

**R**

**Y**

**G**
**G**
**G**
**G**
**G**
**G**

** ****MAR  APR   MAY**

** ****MAR   APR   MAY**

**  ****MAR  APR   MAY**

**  ****MAR  APR   MAY**

** ****MAR  APR   MAY**

**G**
**G**
**G**
**G**
**G**
**G**

**R**
**G**
**G**
**G**

**R**
**G**
**G**
**G**

**G**

**G**

**G**

**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

**R**

**G**

**G**

**G**
**G**
**G**
**G**
**G**
**G**

**G**
**G**
**G**
**G**

## SCHEDULE

_**GLAS performance and testing is much better understood now that we have assembled and run the instrument with its BCE.**_
_**GLAS is an excellent product, but far more challenging than we planned.  Liens and rework issues leading to these challenges are discussed on other charts.**_
_**Project and Program office is meeting with the GLAS developers and 900/500 managers to commit to a new GLAS delivery plan.**_
_**Code 900 future mission activities are not to dilute managers efforts to complete GLAS.**_

**SCHEDULE**
**ICESat PROJECT                                                                                                                     STATUS AS OF:   5/31/01**

**       ****PROBLEM**** ****/**** ****ISSUES          PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****5/**** ****01     6/**** ****01**
**    ****5/01     6/01**
**    **_**6/01**_**     **_**7/01**_

**R**

**Currently causes negative slack to the 12**** ****/**** ****15**** ****/**** ****01 LRD, **_**which cannot be recovered.**_

**GLAS component rework cycles continue to erode GLAS integration and test schedule.**
_**Longer GLAS integration effort need.**_

**1.  Examine and implement any remaining time saving measures for GLAS and observatory.**
**  ****Examine secondary science testing on GLAS.**
_**Managers of Codes 900, 700, 500, 400 to review and commit to new GLAS schedule**_

##                    GLAS I&T PROBLEMS IN WORK

**Rework Status:**** **
**Turning mirrors delivered with slight exceedance of specs (best we can do without redesign); error budget being reassessed**
**LTR rework, vibration and thermal survival complete; looking good; thermal stability tests in progress **
**Flight LSMs assembled and in vibration testing**_** **_
_**Ball solution to correcting interface stability to GLAS instrument is being examined to aid GLAS in the above problems as well.**_

**                   ****GLAS I&T PROBLEMS IN WORK**
**OPTICAL**** ****/**** ****MECHANICAL**
**ICESat PROJECT                                                                                                                     STATUS AS OF:   5/31/01**

**       ****PROBLEM/ISSUES            PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****4/**** ****01     6/**** ****01**
**    **_**6/01**_**      **_**8/01**_

**Y**

**Schedule and System Level Technical Risk**** **

**Rework Required for Optical Stability of:**
**-  Transmit Optics**
**-  Lateral Transfer**
**   ****Retroreflector**
**-  Laser Select Mechanisms**_** **_
_**  **__**Ball bus thermal/   structural stability at GLAS interface is being exceeded**_

**Assess, Analyze, Rework, Retest and Expedite Affected Components**_** **_
_**Ball to study options to meet original GLAS mounting stability rqmts**_

## LAUNCH VEHICLE

**CURRENT STATUS**
**ICESat concurs with FPB decision to fly on DPAF as is and avoid reintegration costs for alternative approaches.  Maintains current integration design and agreements, such as location of fairing doors, adaptor modifications, cables, purge lines, etc.**
_**Boeing flight loads without CATSAT mass model has been completed and discussed.  Loads are acceptable.**_
_**CATSAT does not have to provide a mass model to Boeing for this mission.**_
_**THIS ISSUE IS CLOSED**_

**LAUNCH VEHICLE**
**ICESat PROJECT                                                                                                                     STATUS AS OF:   5/31/01**

**       ****PROBLEM**** ****/**** ****ISSUES            PROGRAMMATIC IMPACT                        ACTION**

**          ****DATE**
**   ****ESTAB  COMPL**
**  ****4/19/01   7/01**

**G**

**Ball and Boeing need to examine effects of removing CATSAT:**
**  ****flight loads**
**  ****separation margins**
**  ****launch time of day.**

**De-manifest of CATSAT from ICESat Delta vehicle**

**Work with HQ, KSC and Boeing to find most efficient solution to CATSAT removal.**

## IT SECURITY

**	****Management****	****IT Security****	****Contingency****	****Agency****	****Number****	****Authorization**
_**Element**_**	**_**Plan**_**	**_**Plan**_** ****	**_**Plan**_**	**_**Check**_**	**_**People**_**	**_**To Proceed**_
**Ball / LASP****	****Complete****	****Complete****	****Complete****	****To Center ****	****22****	****Pending**
**	****	****	****	****Security**
**ISIPS / ISF****	****Final in Sept****	****Final in Sept****	****Final in Sept****	****N**** ****/**** ****A****	****2****	**
**(GSFC Bldg 22)**

**IT SECURITY**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

## PMC ACTION STATUS

_**NONE**_

**PMC ACTION STATUS**

_**Data**__** **__**/**__** **__**Source**_

_**Status**_

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

## ICESat SIGNIFICANT PROGRESS

**ICESat SIGNIFICANT PROGRESS**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**ICESat BUS TESTING SUCCESSFUL AND NEARLY COMPLETE**
**ALL TESTING COMPLETE EXCEPT ACOUSTIC TEST WHICH IS SCHEDULED FOR WEEK OF JUNE 18**
**LAST WEEK’S CTV TEST WITH SPACECRAFT HIGHLY SUCCESSFUL**
**INITIAL GLAS FUNCTIONAL TESTING SUCCESSFULLY COMPLETED**
**INFORMATIVE AND PRODUCTIVE SCIENCE TEAM MEETING HELD AT GSFC MAY 31 AND JUNE 1**
**SCIENCE TEAM IMPRESSED WITH THE INITIAL TEST RESULTS FOR THE INSTRUMENT**
**VERIFIED BY TEST THAT GPS FLIGHT SOFTWARE DOES NOT CONTAIN CLOCK STEERING PROBLEM DISCOVERED IN JASON.  GPS SOFTWARE READY FOR FLIGHT AS IS.**

## GLAS SIGNIFICANT PROGRESS

**GLAS SIGNIFICANT PROGRESS**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**INTEGRATION PROGRESS**
**COMPLETED E-BOX INTEGRATION**
**COMPLETED FOV SWEEPS OF ALTIMETRY AND LIDAR CHANNELS (EXCELLENT CO-ALIGNMENT OF DETECTORS)**
**INTEGRATED LIGHT SHIELD**
**COMPLETED INITIAL FUNCTIONAL TEST (IFT)**
**REWORK PROGRESS**
**REWORK PLANS FOR ELECTRONICS DEVELOPED USING SPARE ELECTRONICS BOARDS**
**TURNING MIRRORS TESTED AND DELIVERED**
**LATERAL TRANSFER RETROREFLECTOR POST VIBE AND POST THERMAL SURVIVAL PERFORMANCE EXCELLENT.  CURRENTLY IN FINAL THERMAL ACCEPTANCE TESTS**
**LASER PROFILING ARRAY REBUILT WITH SPARE/CANNIBALIZED PARTS AND REWORK NEARLY COMPLETE**
**STAR TRACKER’S COLLIMATED REFERENCE SOURCE LENS REBONDING SUCCESSFUL **

## GLAS - Flight Instrument 

## IFT SUCCESS SUMMARY

**IFT SUCCESS SUMMARY**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**INITIAL FUNCTIONAL TEST WAS VERY SUCCESSFUL**
**BASIC INSTRUMENT FUNCTIONALITY DEMONSTRATED IN ALTIMETRY AND LIDAR CHANNELS**
**BCE PERFORMANCE WITH GLAS DEMONSTRATED**
**NO GROSS DESIGN DEFICIENCIES UNCOVERED**
**MANY LESSONS LEARNED**
**SOME SPECIFIC ACCOMPLISHMENTS **
**LASER DIODE TEST SOURCES EMBEDDED IN FLIGHT ELECTRONICS USED INITIALLY TO CONFIRM ALTIMETRY AND LIDAR DETECTOR RESPONSE TO SIMULATED LASER FIRE AND RETURN SIGNALS**
**BCE RECEIPT AND PROCESSING OF FLIGHT LASER PULSES DEMONSTRATED**
**GLAS START PULSE ROUTING AND SIGNAL PROCESSING DEMONSTRATED**
**GLAS 1064 ****μm RECEIVER DETECTION AND ****RANGING ALGORITHMS DEMONSTRATED VIA BCE SIMULATED GROUND ECHO RETURNS**

## IFT SUCCESS SUMMARY

**IFT SUCCESS SUMMARY**
**(continued)**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**OTHER SIGNIFICANT DEMONSTRATIONS**
**BCE PERFORMANCE**
**COMMAND GENERATION AND TEST SCRIPT PROCESSING BY GSE**
**DATA COLLECTION AND HANDLING**
**TEST PROCEDURE DRY RUNS**
**CAVEATS**
**DID NOT TEST STELLAR REFERENCE SYSTEM FUNCTIONS AND ETALON TUNING IN THIS SET OF TESTS**
**DID NOT TEST SYSTEM LEVEL ALIGNMENT**
**DETAILED DATA PROCESSING IS STILL IN PROCESS**

## SCHEDULE ASSESSMENT

**SCHEDULE ASSESSMENT**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**WE HAVE ACCOMPLISHED A LOT, BUT HAVE A LOT TO DO**
**REMAINING INTEGRATION EFFORTS**
**E-BOX REWORK**
**LSM REWORK**
**HARNESSING REWORK**
**RETROFITS**
**FINE ALIGNMENT**
**FINAL DRESSOUT (LHPs/RADIATIORS, THERMAL BLANKETS AND INSTRUMENTATION)**
**CPT DRY RUNS**
**PER**
**ENVIRONMENTAL ACCEPTANCE TESTING (3 MONTHS EFFORT)**

## SCHEDULE ASSESSMENT

**SCHEDULE ASSESSMENT**
**(continued)**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**BASED ON OUR IFT EXPERIENCE AND A BETTER UNDERSTANDING OF THE COMPLEXITIES OF THE GLAS INTEGRATION, MORE TIME IS REQUIRED TO COMPLETE THE GLAS INTEGRATION**
**ELECTRONICS REWORK REQUIRED**
**IMPROVED COOLING OF ALTIMETRY DIGITIZER A/D CONVERTER REQUIRED TO ELIMINATE STICKY BIT CONDITION AT HOT TEMPS**
**DECOUPLING OF 532 ENERGY MONITOR FROM 1553 POWER SUPPLY NOISE**
**LASER SELECT MECHANISM REWORK VERY CHALLENGING AND REQUIRES ANOTHER ITERATION**
**SYSTEM LEVEL ALIGNMENT MORE DEMANDING THAN ESTIMATED**
**CPT DRY RUNS ARE REQUIRED TO DEBUG OUR CPT TEST  PROCEDURES AND TESTS**
**BOTTOM LINE**
**GLAS INTEGRATION IS 2 – 3 MONTHS AWAY FROM COMPLETION**

## SCHEDULE ASSESSMENT

**SCHEDULE ASSESSMENT**
**(continued)**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**WHAT ARE WE DOING ABOUT IT**
**HOLDING  A FORMAL WEEKLY SCHEDULE ASSESSMENT REVIEW BETWEEN ICESAT AND GLAS MANAGEMENT**
**INSTITUTED SCHEDULE REPORTING RULES ENFORCED BY GLAS PROJECT MANAGER TO ELIMINATE UNCOORDINATED SCHEDULE REVISIONS**
**WILL EXPAND WEEKLY SCHEDULE REVIEW  TO INCLUDE  EOS-G PROGRAM, AETD, STAAC AND CODE 900 MANAGEMENT REPRESENTATION**
**MINIMIZE OTHER TASKS TO MAXIMIZE GLAS MANAGEMENT TEAM’S ATTENTION AND PRIORITY ON GLAS**
**SEEK ADDITIONAL I&T SHIFT LEAD TO ASSIST I&T MANAGER**
**FOSTER COORDINATED DIALOGUES TO SEEK OUT REASONABLE TRADES INCLUDING ACCEPTING SCIENCE PERFORMANCE AS IT IS**

## SPACECRAFT FLIGHT HARDWARE STATUS

**SPACECRAFT FLIGHT HARDWARE STATUS**
**ICESat PROJECT                                                                                                                     STATUS AS OF:  5/31/01**

**ACS / ACTUATORS**

**MIC**

**EIC**

**ENV**

**RWA**

**TORQR  RODS**

**Legend:**

**C&DH**

**MIC**

**ENV**

**CTU**

**PEC**

**DBC**

**SCC**

**SEP**

**SSR**

**EIC**

**EPS**

**MIC**

**EIC**

**FUNCT**

**ENV**

**TEST**
**BATT**

**PCU**

**ARRAY PANELS**

**SADA **

**SADE**

**CTV**

**ETM**
**GPS**

**GLAS**
**SIM**

**EM**
**IST/LRS**

**GSE**

**ITOC**
**(GSFC)**

**HRNSS**

**OTHER**

**PAF**

**LRA**

**THRML**
**RAD**

**FLIGHT**
**BATT**

**FSW**

**FLT**
**PAF**

**PROP**
**MOD**

**FLT**
**SIRU**

**STRUCT**

**COMM**

**MIC**

**ENV**

**ZENITH**
**ANT**

**X-BAND**
**XPNDR**

**NADIR**
**ANT**

**RF  FILTER**

**FUNCT**

**ACS SENSORS**

**STAR TRKR**

**SUN SENSORS**

**SUN SENSORS**

**MAGNETOMETERS**

**MIC**

**EIC**

**FUNCT**

**EIC**

**FSWTB**

**FUNCT**

**ENV**

- 1

**1.  ITOC hardware repair underway**
**2.  Periodic loss of lock – thermal sensitivity under investigation**

**FUNCT**

**No Problems**
**Minor Problems**
**Major Problems**
**Complete/Delivered**
**Integration Complete**
**GLAS Mounting**

**PDA**

**SUN SENSORS**
**          ****(G)    (G)    (G)     (G)**

**GPS**

**S-BAND**
**XPNDR**

- 2

**(G)**

##          GLAS INSTRUMENT PROBLEM STATUS

**         ****GLAS INSTRUMENT PROBLEM STATUS**
**ICESat Project                                                                                                                               Status as of:  5/31/01**

**RECEIVER SYSTEM**

**TELESCOPE**

** ****TRANSMITTER SYSTEM**

**FIBER OPTIC SYSTEM**

**LASER**
**(816nm)**
**OTS**

**LED**
**(532nm)**
**OTS**

**FIBER**
**OPTICS**

**GROUND**
**TEST**
**PICKOFF**
**ASSY**

**BENCH CHECKOUT EQUIPMENT**

**TARGETS -**
**MAIN/MINI/SRS**

**NTGSE**

**CONTROL-**
**LERS**

**WORK-**
**STATIONS**

**No Problems**

**Minor Problems**

**Major Problems**

**Legend:**

**ELECTRONICS**

**MAIN**
**ELECT**
**UNIT**

**HIGH**
**VOLTAGE**
**PWR SUPPLY**

**POWER**
**DISTRIB**
**UNIT**

**HARNESSING**

**LIDAR SYSTEM**

**ETALON**

**LBSM**

**BEAM-SPLITTER**
**ASSY**

**SPCMs**

**THERMAL CONTROL SYSTEM**

**CONSTANT**
**CONDUCT**
**HEAT PIPES**

**LOOP HEAT PIPES/**
**RADIATORS**

**BLANKETING**

**HEATERS/**
**INSTRUMENTATION**

**ALTIMETRY**
**TOWER**

**STELLAR REFERENCE SYSTEM**

**LASER**
**REF**
**TELESCOPE**

**ROSI**
**STAR**
**TRACKER**

**COLLIMATED**
**REF**
**SOURCE**

**LASER**
**REF**
**SENSOR**

**LASER**
**PROFILING**
**ARRAY**

**GYRO**

**HARNESSING**

**LATERAL**
**TRANSFER**
**RETROs**

**LASER**

**L**
**S**
**M**

**L**
**S**
**M**

**TRANSMIT**
**OPTICS**

**LASER**

**LASER**

**TEST SYSTEMS -**
**ALTIMETER/LIDAR/**
**GPS**

##            GLAS INSTRUMENT INTEGRATION STATUS

**           ****GLAS INSTRUMENT INTEGRATION STATUS**
**ICESat Project                                                                                                                               Status as of:  5/31/01**

**RECEIVER SYSTEM**

**TELESCOPE**

** ****TRANSMITTER SYSTEM**

**FIBER OPTIC SYSTEM**

**LASER**
**(816nm)**
**OTS**

**LED**
**(532nm)**
**OTS**

**FIBER**
**OPTICS**

**GROUND**
**TEST**
**PICKOFF**
**ASSY**

**BENCH CHECKOUT EQUIPMENT**

**Substitute Hardware **
**Temporarily Integrated**

**Integrated**

**Complete/Not Integrated**

**Legend:**

**ELECTRONICS**

**MAIN**
**ELECT**
**UNIT**

**HIGH**
**VOLTAGE**
**PWR SUPPLY**

**POWER**
**DISTRIB**
**UNIT**

**HARNESSING**

**LIDAR SYSTEM**

**ETALON**

**LBSM**

**BEAM-SPLITTER**
**ASSY**

**SPCMs**

**THERMAL CONTROL SYSTEM**

**CONSTANT**
**CONDUCT**
**HEAT PIPES**

**LOOP HEAT PIPES/**
**RADIATORS**

**HEATERS/**
**INSTRUMENTATION**

**ALTIMETRY**
**TOWER**

**STELLAR REFERENCE SYSTEM**

**LASER**
**REF**
**TELESCOPE**

**ROSI**
**STAR**
**TRACKER**

**COLLIMATED**
**REF**
**SOURCE**

**LASER**
**REF**
**SENSOR**

**LASER**
**PROFILING**
**ARRAY**

**GYRO**

**HARNESSING**

**LATERAL**
**TRANSFER**
**RETROs**

**LASER**

**L**
**S**
**M**

**L**
**S**
**M**

**TRANSMIT**
**OPTICS**

**LASER**

**LASER**

**TARGETS -**
**MAIN/MINI/SRS**

**NTGSE**

**CONTROL-**
**LERS**

**WORK-**
**STATIONS**

**TEST SYSTEMS -**
**ALTIMETER/LIDAR/**
**GPS**

**Not Delivered to I&T**

**BLANKETING**

##                   SCHEDULE SLACK OVERVIEW                                                                                                                                                    LRD 12 / 15 / 01 (1)

**GLAS INSTRUMENT****	****CODE 924****	****4**** ****/**** ****20**** ****/**** ****01****	**** **
**S/C H/W SUBSYSTEMS****	****BALL ****(3)****	****6**** ****/**** ****18**** ****/**** ****01****	**** 7**** ****/**** ****6**** ****/**** ****01 ****	****-3 WEEKS TO CONTRACT**
**INTEGRA. COMPLETE****	****	****	****	****DELIVERY DATE**
**OBSERVATORY I&T****	**** **
**AND LAUNCH**
**NOTES:  (1)  HQ CCB OF 10 / 6 / 00 SET NEW ICESat LRD AS 12 / 15 / 01**
**                ****(2)  NEW GLAS CONTRACT DELIVERY DATE WAS ESTABLISHED IN MAY 00**
**                ****(3)  FORMAL BALL LATE GLAS PROPOSAL OF DECEMBER 4, 2000**
**                ****(4)  NEW GLAS DELIVERY SCHEDULE IS IN ACCEPTANCE CYCLE WITH 400, 500, AND 900**
**                       ****MANAGEMENT NOW THAT GLAS IS IN OPERATIONAL STATUS**

**                  ****SCHEDULE SLACK OVERVIEW****                                                                                                                                                    ****LRD 12**** ****/**** ****15**** ****/**** ****01 ****(1)**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**NEW GLAS DELIVERY DATE UNDER REVIEW**

##                    SCHEDULE SLACK HISTORY

**12**
** ****8**
** ****4**
** ****0**

**W**
**E**
**E**
**K**
**S**

**6/99      1/00                     1/01                    1/02**

**10-WEEK GLAS DELAY (JULY 01 LRD)**
**LRD CHANGE TO 12**** ****/**** ****15**** ****/**** ****01**

**4 WEEKS TO GLAS FOR I&T & COMPONENT PROBLEM RESOLUTION**

**8 WEEKS**

**11 WEEKS**
**TOTAL PROGRAM**

**2 WEEKS**

**                   ****SCHEDULE SLACK HISTORY**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**LATE SRS AND OTHER COMPONENT DELIVERIES TO I&T**
**FLIGHT E-BOX INDUCTOR REPAIR**
**OPTICAL STABILITY REWORK**

**REWORK  OF HEAT PIPES, SPCMS, LASER ADJUSTMENT AND DC**** ****/**** ****DC CONVERTERS**

**NEW GLAS DELIVERY DATE UNDER REVIEW**

## BACKUP

**BACKUP**

## ICESat MASTER SCHEDULE 

**ICESat MASTER SCHEDULE**** **

**99**

**00**

**01**

**02**

**C **

**Y**

**SPACECRAFT**

**PROJECT/ELEMENT**

**SCIENCE/ISIPS**
**GSFC CODE 900**

**ESDIS GROUND**
**SYSTEM + **
**OPERATIONS **

**Orig Approval**

**Status As Of**

** ****5/31/01**

**1**

**2**

**BALL AEROSPACE**

**REVIEWS**

**GLAS INSTRUMENT**

**GSFC CODE 900**

**APPVL RESP**

**ACCOMP RESP**

**C. SCOLESE**

**J. DEZIO**

**GSFC**

**3**

**4**

**LAUNCH VEHICLE**
**DELTA 7320**

**7/31/00**

**CONTROL CENTER/FOT**
**BALL AEROSPACE**

**MOR**

**PER**

**LRD**

**Environmental Testing**

**Box, Pack, and Ship**

**Launch Operations**

**GLAS I+T**

**FOR**

**PSR**

**LRR**

**ACDS**
**+ Prop**

**S/As**

**PSR**

**Drill **

**Template**

**Final **

**ATBDs**

**Review ATBDs**

**Oral **

**Reviews**

**Report**

**MOWG 2 **

**NSIDC **

**CDR**

**#1**

**Flt Lasers 2 + 3**

**Beta**
**Version **

**Version #1**

**SCF Launch Ready**

**E-T-E**
**Test **

**EDOS **

**Vac**
**Test **

**CTV **

**Award**

**Award **

**Development**

**Procure.’s, Fab, Assy, + Test**

**ISF **

**AGS****NGS**

**GRD**
**ORR **

**30 Day**
**C/O **

**GLAS**
**C/O **

**Calibration**
**Validation**
**4/15 **

**FDS**
**PDR **

**Cmd/Tlm**
**  ****Test**

**Sim + Dress**
**Rehearsals **

**Fabrication**

**MRR**

**FRR**

**ORR **

**3**

**   ****Design/Development/Integrate/Test**

** ****Time Now**

**Avionics and Harness In-House**

**SIPS CDR**

**SIPS**
**Version #1**

**SIPS**
**H/W**

**SIPS**
**Version #2**

**Manufacturing , Assembly, and  Test**

**Ctrl Computers**

**Struct.**

**Final**
**MORD**

**Flt **

**Tele**

**   ****Design/Development/Integrate/Test**

**MOR**

**Start 2nd Stage **

**DPAF (C)          **

**CCAS**
**DMCO**

**LOX**
**Tanks (C) **

**LOX Tanks (S) **

**S/C Fit Check **

**DPAF Assy/Mfgr (S) **

**Complete 2nd Stage **

** ****Fuel Tanks (S) **

**Fuel **
**Tanks (C) **

**S/S Deliveries**

**PWR**

** ****C&DH + COM**

**3**

**Draft**
**IGS**
**Test**
**Plan **

**Original GLAS Delv.**

**Final IGS**
**Test Plan **

**LRD**
**12/15**

**Flt Laser **

**Delv **

**Bus Qual w/Instr Mass Model**
**and Elec I/F C/O w/Simulators**

**Subsystem I+T**

**Delv.**
**7/23**

**4**

**Assy + Test**

**2 Weeks**
**Bus Slack**

**Delivery and Launch Operations**

**SIPS**
**Version #3**

**FOT Training**

**NEW GLAS DELIVERY DATE UNDER REVIEW**

## EOS ICESat PROJECT

**SAFETY STATUS**
**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

**	****	****	****	****PLANNED**
_**OBJECTIVE**_**	****	**_**ACTIONS**_**	**_**COMPLETION**_**	**_**STATUS**_
**SAFETY FIRST****	****-  View Safety In-Service Day videos****	****9**** ****/**** ****99****	****Complete**
**	****	****-  Occupational Health Survey****	****9**** ****/**** ****99****	****Complete**
**	****	****-  Complete Goddard Safety Initiative Employee ****	****12**** ****/**** ****99****	****Complete**
**	****	****    ****Awareness Training **
**	****	****-  Goddard Lightning & Severe Weather Safety****	****1**** ****/**** ****00****	****Complete**
**	****	****-  Ergonomics Training****	****	****2**** ****/**** ****00****	****Complete**
**	****	****-  Work Area Safety Inspections****	****12**** ****/**** ****99, 4**** ****/**** ****00****	****Complete**
**	****	****-  Job Safety Analysis****	****	****11**** ****/**** ****99****	****Complete**
**	****	****-  Generate Code 425 Safety Plan****	****4**** ****/**** ****00****	****Complete**
**	****	****-  Generate Code 425 Hazard Communication Plan****	****4**** ****/**** ****00****	****Complete**
**	****	****-  Develop Safety Training Plan for each employee****	****4**** ****/**** ****00****	****Complete**
**	****	****-  General Housecleaning****	****Continuous****	****Continuous**
**	****	****-  IT Security Awareness Overview Training****	****8**** ****/**** ****00****	****Complete**
**	****	****-  IT Security Awareness Training for Managers****	****12**** ****/**** ****00****	****Complete**
**	****	****-  Basic IT Security for 2001 with Managers' Supplement****	****12**** ****/**** ****01****	****1 of 3 compl**

**  **

## ACRONYMS

**ACRONYMS**

**AFT - (GLAS aft optics)**
**AGS - Alaska Ground Station**
**ANT - Antenna**
**ARO - After Receipt of Order**
**ATP - Authority to Proceed**
**CCAS – Cape Canaveral Air Station**
**CM – Center of Mass**
**CPT- Comprehensive Performance Test**
**CTU - Command and Telemetry Unit**
**DBC - Data Bus Coupler**
**DO – Delivery Order**
**DSU - Data Storage Unit**
**EAC – Estimate at Completion**
**E-BOX - Electronics Box (= MEU)**
**EDAC - Error Detection and Correction**
**EIC - Electrical Integration Complete**
**ENV - Environment or Environmental**
**EPS - Electrical Power Subsystem**
**FOR - Flight Operations Review**
**FOT - Flight Operations Team**

**FRR - Flight Readiness Review**
**FSW - Flight Software**
**FSWTB - Flight Software Test Bench**
**HRG - Hemispherical Resonating Gyro**
**HVPS – High Voltage Power Supply**
**IGS - ICESat Ground System**
**IIRR – Instrument Integration Readiness Review**
**IRU - Inertial Reference Units**
**ISF - Instrument Science Facility**
**I-SIPS - ICESat Science Investigator-Led Processing **
**IST - Instrument Star Tracker**
**ITOC - Instrument Test Operations Center**
**LASP - Laboratory for Atmospheric & Space Physics**
**LED – Light-Emitting Diode**
**LHP - Loop Heat Pipe **
**LPA – Laser Profiling Array**
**LRA - Laser Retro-Reflector Assembly**
**LRD - Launch Readiness Date**
**LRR - Launch Readiness Review**
**LRS - Laser Reference System**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

## ACRONYMS

**ACRONYMS**

**LSM - Laser Steering Mechanism**
**MEU - Main Electronics Unit**
**MIC - Mechanical Integration Complete**
**MIWG - Mission Integration Working Group**
**MOC - Mission Operations Center**
**MOR - Mission Operations Review**
**MORD - Mission Operations Requirements Doc.**
**MOWG - Mission Operations Working Group**
**MPS - Multi-program Support**
**MRR - Mission Readiness Review**
**NADIR – Earth-facing side of spacecraft**
**NGS - Norway Ground Station**
**NISN - NASA Integrated Services Network**
**NSIDC - National Snow and Ice Data Center**
**NTGSE - (Windows) NT Ground Support Equip**
**ORR - Operational Readiness Review**
**OTS - Optical Test Source**
**PDA - Power Distribution Assembly**
**PDU – Power Distribution Unit**
**PEC - Precise External Clock**

**PRA – Probabilistic Risk Assessment**
**RWA – Reaction Wheel Assembly**
**S**** ****/**** ****A - Solar Array**
**SADA – Solar Array Drive Assembly**
**SADE – Solar Array Drive Electronics**
**SCC - Spacecraft Control Computer**
**SEP - Spacecraft Electronics Package**
**SIPS – Science Investigator-Led Processing System**
**SIRU - Space Inertial Reference Unit**
**SLTC – Space Lidar Technical Center**
**SM - Safe Mode**
**SORD - Systems Operations Requirements Document**
**SPCM - Single Photon Counting Module**
**SRS - Software Requirements Specification**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   5/31/01**

## END OF MISSION PLAN DEVELOPMENT

**END OF MISSION PLAN DEVELOPMENT**
**COMPLETED**

_**Final Estimate**_**:  **
**	****Final Orbital Debris Generation report was approved by Headquarters on 4**** ****/**** ****9**** ****/**** ****01.  The total mission package included ICESat, CATSAT, DPAF, and launch vehicle.  Both ICESat and CATSAT meet the 8m****2**** guideline by significant margins.  ICESat is 3.9m****2**** and CATSAT 0.9m****2****.  ICESat will reenter in 15 years, which is well under the 25 year guideline.**
**	**
_**Disposal Option Assessment**_
**	**_**Controlled Reentry**_**:  Not practical -- +240kg additional fuel and 6 months delay**
**	**_**Safe Orbit**_**:  Not feasible -- same as re-entry**
**	**_**Shuttle Recovery**_**:  ICESat polar orbit not accessible to the shuttle; also spacecraft design not manned-flight rated**

**ICESat PROJECT                                                                                                                STATUS AS OF:   5/31/01**

## PROJECT OVERVIEW

**PROJECT OVERVIEW**

**ICESat**
_**SIGNIFICANT PROGRESS**_
**INITIAL GLAS FUNCTIONAL TESTING (IFT) SUCCESSFULLY COMPLETED:**
**GLAS LASER TRANSMIT AND ALTIMETRY**** ****/**** ****LIDAR FUNCTIONALLY DEMONSTRATED**
**BCS RECEIPT AND PROCESSING OF FLIGHT LASER PULSES DEMONSTRATED**
**GLAS START PULSE ROUTING AND SIGNAL PROCESSING DEMONSTRATED**
**BCE SIMULATED 1064 ****μ****M GROUND ECHO RETURNS AND RANGING ALGORITHMS**
**DELAYED**** ****/**** ****ATTENUATED GLAS LASER PULSES SENT INTO GLAS RECEIVER PATH**
**COMMAND GENERATION AND TEST SCRIPT PROCESSING BY GSE DEMONSTRATED**
**DATA COLLECTION AND HANDLING AND PROCEDURE DRY RUNS DEMONSTRATED**
**SCIENCE TEAM MEETING HELD AT GSFC 5**** ****/**** ****31-6**** ****/**** ****1.  SCIENCE TEAM IMPRESSED WITH INITIAL TEST RESULTS OF GLAS**
**BALL BUS CTV TESTS WERE SUCCESSFUL.  BUS BEING PREPARED FOR ACOUSTIC TEST WEEK OF JUNE 18, WHICH COMPLETES RISK REDUCTION PROGRAM.**
_**ISSUES / CONCERNS**_
**KNOWN LIENS AGAINST GLAS FLIGHT E-BOX (BIT HANG-UP AND NOISE DECOUPLING OF ENERGY MONITOR) MUST BE CORRECTED**
**NEW WORK IDENTIFIED BY GLAS IFT WILL EXTEND GLAS INTEGRATION TIME.  ENVIRONMENTAL TESTING OF GLAS IS 2-3 MONTHS AWAY.**

**R**

**ICESat PROJECT                                                                                                                STATUS AS OF:   4/30/01**