# Presentation: 722697

## 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**

**November 14, 2001**

## ICESat PROJECT SUMMARY

**ICESat PROJECT SUMMARY**
**STATUS AS OF:  10/31/01**

_**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**

** ****AUG   SEP  OCT**

**Spacecraft Bus:**

**Prime**

**Major Interfaces**

**Resources**

**Instruments**

**Business**

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

**Summary Assessment**

**Y**

**R**

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

**Y**

**JPL GPS Receivers**

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

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

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

**GLAS**

**Y**

**Y**

**R**

**Y**

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

** ****AUG   SEP   OCT**

** ****AUG    SEP   OCT**

** ****AUG   SEP   OCT**

**  ****AUG   SEP  OCT**

** ****AUG  SEP   OCT**

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

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

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

**G**

**G**

**G**

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

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

**R**

**R**

**G**

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

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

## SCHEDULE

**Codes 400 and 500 are discussing ways to contain this problem**
**Expedite thermal performance evaluation of optical system**

**CURRENT STATUS**
_**GLAS schedule reviewed and rebaselined by AETD showing:**_
_**April 30, 2002, arrival at Ball**_
_**Working 5 days, 2 shifts (Weekends and holidays are used as catch-up only)**_
_**Returned to standard I&T flow (no early TV)**_
_**Earliest ICESat LRD becomes October 31 with 3 weeks schedule reserve (1 week held in instrument schedule)**_
_**Recovery plan and new LRD to be presented to Code Y ASAP.**_

**SCHEDULE**
**STATUS AS OF:   10/31/01**

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

**          ****DATE**
**   ****ESTAB  COMPL**
**  **_**10**__** **__**/**__** **__**15**_**     **_**11**__** **__**/**__** **__**1**_
**    ****Complete**
**   **_**10**__** **__**/**__** **__**15**_**   **_**11**__** **__**/**__** **__**30**_
**  ****Test removed**
**   ****issue closed**

**R**

**Latest GLAS completion schedule causes **_**impact to LRD.**_

**GLAS component rework cycles continue to erode GLAS integration and test schedule; longer GLAS integration effort needed**

##                    GLAS I&T PROBLEMS IN WORK

**Rework Required for **
**Optical Stability of:**
**  ****Lateral Transfer**
**   ****Retroreflector**
**-  Laser Select Mechanisms**_** **_

**CURRENT STATUS**
_**LSMs with invar counterweights completed, tested, and integrated into GLAS.  Primary turning mirror with scratch deemed acceptable for flight and has been integrated.  T/V testing will confirm system level performance of these components.**_

**                   ****GLAS I&T PROBLEMS IN WORK**
**OPTICAL**** ****/**** ****MECHANICAL**
**STATUS AS OF:   10/31/01**

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

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****4**** ****/**** ****01      **_**11**__** **__**/**__** **__**2**_
**       **_**(CLOSED)**_
**    ****4**** ****/**** ****01      11**** ****/**** ****01**
**      ****(CLOSED)**
**                   **_**11**__** **__**/**__** **__**2**_
**      **_**(CLOSED)**_

**G**

**Schedule and System Level Technical Risk**** may impact the proposed June 02 LRD**

**Assess, Analyze, Rework, Retest and Expedite Affected Components**_** **_
**LTR Cover Mounting reworked and retested**
_**LSMs integrated; proceed with system level evaluation**_

## COST

_**A 10**__** **__**/**__** **__**31**__** **__**/**__** **__**02 LRD requires overguide of $7.7M in FY02 and $9.1M in FY03**_
_**New LRD and funding requirements to be presented to Code Y ASAP.**_

**COST**
**STATUS AS OF:   10/31/01**

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

**          ****DATE**
**   ****ESTAB  COMPL**
**    ****7/**** ****01    **_**11/15**_

**R**

**Cannot **_**support**_** proposed **_**10**__** **__**/**__** **__**31**__** **__**/**__** **__**02**_** LRD without additional funding.**

**ICESat is unfunded beyond 3**** ****/**** ****31**** ****/**** ****02.**

_**Present overguide requirements to Code Y.**_

## 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 Dec****	****Final in Dec****	****Final in Dec****	****To Be Sent****	****18*****	****N**** ****/**** ****A**
**(GSFC Bldg 22)**
***Number increased significantly due to changes in IT security requirement to include data handling personnel.  Forms have been submitted and fingerprinting is in progress.**

**IT SECURITY**

**STATUS AS OF:   10/31/01**

## PMC ACTION STATUS

_**NONE**_

**PMC ACTION STATUS**

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

_**Status**_

**STATUS AS OF:   10/31/01**

## ICESat SIGNIFICANT PROGRESS

**ICESat SIGNIFICANT PROGRESS**

**STATUS AS OF:   10/31/01**

**AETD REVIEWED GLAS AND OBSERVATORY I&T FLOWS FOR TECHNICAL CONTENT AND REALISM OF THE TIMELINE.  FOUND CONTENT AND LOGIC TO COMPLETE AND CONSISTENT.  MOST SIGNIFICANTLY, THEY FOUND THAT GLAS I&T TIMELINE WAS OVERLY OPTIMISTIC**
**FINDINGS WERE PRESENTED TO CODE 100 ON NOVEMBER 6 WITH RESULTANT ICESat/GLAS SCHEDULE REBASELINE AS FOLLOWS:**
**GLAS ARRIVAL AT BALL IS APRIL 30, 2002 (WITH 1 WEEK SCHEDULE RESERVE)**
**EARLIEST ICESat LRD IS OCTOBER 31, 2002 (WITH 2 WEEKS SCHEDULE RESERVE, FOR PROGRAM TOTAL OF 3 WEEKS)**

## ICESat SIGNIFICANT PROGRESS

**ICESat SIGNIFICANT PROGRESS**
**(continued)**

**STATUS AS OF:   10/31/01**

**BASIC ELEMENTS OF THE SCHEDULE REBASELINE ARE:**
**THE GLAS WORKFORCE AT GODDARD IS 5 DAYS, 2 SHIFTS WITH WEEKENDS AND HOLIDAYS USED FOR CATCH-UP WORK**
**GLAS COMPONENT PERFORMANCE IS SUFFICIENT AND WILL PROCEED WITH INTEGRATION AND THE ENVIRONMENTAL TEST PROGRAM**
**ALL RECOGNIZED THAT TO CONTAIN SCHEDULE SOME GLAS PERFORMANCE COMPROMISES MAY HAVE TO BE ACCEPTED**
**NO LSM CHANGE-OUT ASSUMED**
**NEWLY FORMED GLAS TECHNICAL ADVISORY PANEL CONVENED ON NOVEMBER 6; FORMAL REPORT IN PREPARATION.  THEY NOTED THAT:**
**SCHEDULE RISK ASSOCIATED WITH THE GLAS BORESIGHT ALIGNMENT ISSUE WILL BE RETIRED AFTER COMPLETION OF GLAS THERMAL VACUUM TESTING**

## GLAS SIGNIFICANT PROGRESS

**GLAS SIGNIFICANT PROGRESS**

**STATUS AS OF:   11/08/01**

_**Revised Schedule**_**:**
**A revised schedule to complete I&T by April 30, 2002, was presented to    Code 100.  A milestone chart based on the new schedule is being used to measure GLAS I&T progress.  To date, we are on schedule.**
_**Integration Progress:**_
**Completed SRS final alignment; **
**Completed laser pick-off level setting; **
**Completed TCS harness work; **
**Verified the SRS and laser pick-off alignment with all three flight lasers**
**Installed primary mirror & etalon reworked MOSFET cards**
**Completed telescope stray light test (2 weeks ahead of schedule) **
**Bore-sight alignment in process – repeating some checks to track down inconsistent gravity roll results**

## CURRENT WORK PLAN

**CURRENT WORK PLAN**

**STATUS AS OF 11/08/01**

**IN FINAL INTEGRATION FLOW - ALL FLIGHT COMPONENTS NOW DELIVERED TO I&T **
**REMAINING KEY INTEGRATION TASKS**
**RADIATORS ASSEMBLY (SEVERAL DRY FIT CHECKS****	****11**** ****/**** ****13**** ****/**** ****01**
**DONE BUT ONCE COMPLETED, PHYSICAL ACCESS TO **
**INTERNAL COMPONENTS SEVERELY RESTRICTED)**
**FINALIZE FIBER OPTICS INTEGRATION (A DELICATE ****	****11**** ****/**** ****30**** ****/**** ****01**
**OPERATION BECAUSE OF FRAGILE FIBERS)**
**CONDUCT ITOC TESTING (LOW RISK – FOLLOW UP OF ****	****12**** ****/**** ****12-14**** ****/**** ****01**
**PREVIOUS TESTING)**
**COMPLETE BASELINE CPT (LOW RISK -- ADEQUATE DRY ****	****12**** ****/**** ****12**** ****/**** ****01**
**RUN OF:  PROCEDURES COMPLETED)**
**PRE-ENVIRONMENTAL REVIEW****	****12**** ****/**** ****12-13**** ****/**** ****01**
**BEGIN ENVIRONMENTAL TEST PROGRAM****	****12**** ****/**** ****27**** ****/**** ****01**
**START TVAC PROGRAM (THIS IS WHERE WE DEMONSTRATE ****	****02**** ****/**** ****20**** ****/**** ****02**
**OUR REAL OPTO-STABILITY PERFORMANCE)**
**SHIP GLAS TO BASC****	****04**** ****/**** ****24**** ****/**** ****02**

## GLAS REBASELINED SCHEDULE

**GLAS REBASELINED SCHEDULE**

**ICESat PROJECT                                                                                                                   STATUS AS OF:   11/05/01**

## GLAS I&T; Blanket installation 11/02/2001

**GLAS I&T; Blanket installation 11/02/2001**

## GLAS I&T Work in the SCA 11/05/01

**GLAS I&T Work in the SCA 11/05/01**

## GLAS INSTRUMENT PROBLEM STATUS

**GLAS INSTRUMENT PROBLEM STATUS**
**ICESat Project                                                                                                                                  Status as of 11/08/01****	****	****	****	****	****	**

**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 **
**Status as of:  11-7-01****	**

**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**

**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**

**NTGSE**

**CONTROL-**
**LERS**

**WORK-**
**STATIONS**

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

**Not Delivered to I&T**

**MINI-TARGET**

**MAIN/SRS TARGETS**

**HEATERS/**
**INSTRUMENTATION**

**MOSFET CONTROLLERS**

**BLANKETING**

## SPACECRAFT FLIGHT HARDWARE STATUS

**SPACECRAFT FLIGHT HARDWARE STATUS**
**ICESat PROJECT                                                                                                                     STATUS AS OF:  10/31/01**

**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.  Lost lock once during test  – 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**

- 1

**(G)**

##                   SCHEDULE SLACK OVERVIEW                                                                                                           TO PROPOSED 10 / 31 / 02 LRD

**GLAS INSTRUMENT****	****CODE 500****	****4**** ****/**** ****30**** ****/**** ****02****	**** 4**** ****/**** ****22**** ****/**** ****02****	****1 WEEK ****(1)**
**S/C BUS**** ****	****BALL****	****	**** ****	****COMPLETE ****(2)**
**	****	****	****	**
**OBSERVATORY I&T ****	**** BALL****	**** 10**** ****/**** ****31**** ****/**** ****02 ****(3)****	**** 10**** ****/**** ****17**** ****/**** ****02****	****2 WEEKS**
**AND LAUNCH**
**NOTES:  (1)  WORKFORCE IS 2 SHIFTS, 5 DAYS.  WEEKEND AND HOLIDAYS USED FOR CATCH-UP ONLY**
**                ****(2)  BALL SPACECRAFT AND PRE-OBSERVATORY TESTING IS COMPLETE, IIRR HELD JULY 10 & 11**
**                ****(3)  BALL CONTRACT TO BE MODIFIED FOR NEW GLAS ARRIVAL AND LRD**

**                  ****SCHEDULE SLACK OVERVIEW****                                                                                                           ****TO PROPOSED 10**** ****/**** ****31**** ****/**** ****02 LRD**

**STATUS AS OF:   10/31/01**

##                    SCHEDULE SLACK HISTORY

**EVALUATED TURNING MIRROR SCRATCH**
**REPEATED WORKMANSHIP VIBRATION OF LSM-2**

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

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

**4/00              1/01                    1/02                   1/03**

**LRD CHANGE TO 12**** ****/**** ****15**** ****/**** ****01**

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

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

**                   ****SCHEDULE SLACK HISTORY**

**STATUS AS OF:   10/31/01**

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

**ASSUMES GLAS DELIVERY DATE OF 12/1/01 AND 6/1/02 LRD**

**LATE SRS AND OTHER COMPONENT DELIVERIES TO I&T**

**FLIGHT E-BOX INDUCTOR REPAIR**

**OPTICAL STABILITY AND E-BOX REWORK**

**INSTALLATION OF INVAR COUNTER WEIGHTS ON LSM’S**

**-4 WEEKS SLACK**

**6/01 LRD**

**12/15/01 LRD**

**10/31/02 LRD PROPOSED**

**GLAS AETD SCHEDULE REBASELINE AND PROPOSED 10/31/02 LRD**

## 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 **

**Status As Of**

**11/7/01**

**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**

**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**

**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 **

**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**

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

**Original GLAS Delv.**

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

**LRD 10/31**

**Flt Laser **

**Delv **

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

**+2 Weeks Reserve**

**Subsystem I+T**

**PER 12/15**

**Assy + Test**

**Delivery and Launch Operations**

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

**FOT Training**

**Slip Delv to 4/30**

**(Proposed)**

**+1 week reserve**

## 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**
**Expect no changes when CHIPSAT data becomes available**

**STATUS AS OF:   10/31/01**

## Mission Success Starts with Safety EOS ICESat Project Safety Report

- Safety Initiative action(s) taken in (October 2001 of action)
- Safety for the public
- Safety for the astronauts and pilots
- Safety for the workforce
- Health and Safety Potpourri
- Safety for high value assets and equipment
- Safety Performance Metrics (since October 31, 2001)
- Number of personal injury accidents:  0
- Number of lost time injuries:  0
- Cumulative number of lost time days:  0
- Number of non-mission-related asset mishaps:  0,    Estimated cost: $0
- Number   of   mission-related   asset  mishaps:  0,    Estimated cost: $0

## 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**

**STATUS AS OF:   10/31/01**

## 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 – Stellar Reference System**

**STATUS AS OF:   10/31/01**

## PROJECT OVERVIEW

**PROJECT OVERVIEW**

**ICESat**
_**SIGNIFICANT PROGRESS**_
**AETD REVIEWED GLAS AND OBSERVATORY I&T FLOWS FOR TECHNICAL CONTENT AND REALISM OF THE TIMELINE.  FOUND CONTENT AND LOGIC TO BE COMPLETE AND CONSISTENT.  MOST SIGNIFICANTLY THEY FOUND THAT GLAS I&T TIMELINE WAS OVERLY OPTIMISTIC**
**FINDINGS WERE PRESENTED TO CODE 100 ON NOVEMBER 6 WITH RESULTANT ICESat**** ****/**** ****GLAS SCHEDULE REBASELINE AS FOLLOWS:**
**GLAS ARRIVAL AT BALL IS APRIL 30, 2002 (WITH 1 WEEK SCHEDULE RESERVE)**
**EARLIEST ICESat LRD IS OCTOBER 31, 2002 (WITH 2 WEEKS SCHEDULE RESERVE FOR PROGRAM TOTAL OF 3 WEEKS)**
**BASIC ELEMENTS OF THE SCHEDULE REBASELINE ARE:  (1)  GLAS COMPONENT PERFORMANCE IS SUFFICIENT AND WILL PROCEED WITH INTEGRATION AND THE ENVIRONMENTAL TEST PROGRAM; (2)  ALL RECOGNIZED THAT TO CONTAIN SCHEDULE SOME GLAS PERFORMANCE COMPROMISES MAY HAVE TO BE ACCEPTED; AND (3) NO LSM CHANGE-OUT ASSUMED**
**NEWLY FORMED GLAS TECHNICAL ADVISORY PANEL CONVENED NOVEMBER 6; FINAL REPORT IN PREPARATION**
_**ISSUES**__** **__**/**__** **__**CONCERNS**_
**GLAS SYSTEM LEVEL PERFORMANCE TO BE DEMONSTRATED IN THE NEXT FEW MONTHS**

**R**

**STATUS AS OF:   10/31/01**