GLAST LAT Project
Mechanical Systems
Mechanical Systems
Mechanical / Thermal Hardware
July 2005 Status
Marc Campell, Subsystem Manager
1
GLAST LAT Project
Mechanical Systems
SLAC Status
2
GLAST LAT Project
Mechanical Systems
Grid Qual Static Load Test
•
Hardware
– Grid Box assembly is 99% complete
– All GSFC and Spectrum provided hardware is on hand
•
Pre-Test (SLAC activities)
•
– Test Interface Plate (TIP) Assembly delayed due to personnel
conflicts with ACD operations – in work now
– Need to return Spectrums Interface plate by mid-Sept.
– Shipping container for Grid 2 on TIP due 9/7/05
Test (NTS activity)
– Component flexure test required to proof load flexures prior to
integration with the Flight LAT on the Test Interface Plate has been
added to NTS SOW
• Test performed on TIP assembly prior to SLT
• Flexure strain gages also characterized for LAT sine vibe testing
– NTS has evaluated final load cases and additional test above and
submitted delta cost proposal (+$XXK) which is still within original
budget
3
GLAST LAT Project
Mechanical Systems
Grid Qual Static Load Test Schedule
4
GLAST LAT Project
Mechanical Systems
Drawing Release Plan
•
•
66 of 73 (90%) drawings released
– 3 MLI drawings (in work)
– 4 unreleased parts not needed until Radiator fit check
Known drawing revisions
5
GLAST LAT Project
Mechanical Systems
Concerns
•
•
Lockheed Martin - Radiator delivery schedule
– See LM presentation
Completion of Grid Thermal Control System hardware installation
delay until Sep 05.
– Will try to perform on a non-interference basis, but may impact
LAT schedule.
– Heater bonding fixture trials underway in I&T
6
GLAST LAT Project
Mechanical Systems
Open Flight Design Issues
•
•
Radiator integration sequence
– Coupon testing of repeated make & break of joint has been tested.
Results were inconclusive due to test facility problems.
– Test facility alternatives under investigation.
– Disassembly facilitated by use of mold release agent
– Baseline process used for LM Radiator thermal vacuum test set up
Radiator vibration requirements
– Sine vibration testing will not be performed at LM
• Test options under investigation
7
GLAST LAT Project
Mechanical Systems
MECH Qualification Program
Grid-Top Flange Heat Pipe bond
process qual
Grid Box Assy Static Load test
Complete. Report released
Planning in work. Perform
on Grid #2
X-LAT Plate Thermal Vac test
Complete less MRB on final
results
Radiator Variable Conductance Heat Passed burst test, heat
Pipe new extrusion
capacity test after charging
Radiator Acoustic
at LMMS
Radiator Thermal Vacuum
at LMMS
TCS-Radiator Thermal Balance
at LMMS
Comp
Sep 05
Comp
Comp
Comp
Sep 05
Sep 05
8
GLAST LAT Project
Gamma-ray Large
Area Space
Telescope
Mechanical Systems
Cost/Schedule Reports for
4.1.8 Mechanical Systems
Presentation
July 2005 Month End
9
GLAST LAT Project
Mechanical Systems
Level 3 Milestone Count
4
Plan
Actual
Forecast
3
2
SEP05
AUG05
JUL05
JUN05
APR05
MAR05
FEB05
0
JAN05
1
10
GLAST LAT Project
WPNO
Level 3 Milestone List
Activity
Description
Baseline
Finish
-2m -1m
Delta
Bsln
Var Var Var
Early
Finish
Mechanical Systems
2005
2006
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
4.1.8 M echanical
Flight Grid RFI-Mech to I&T
03/23/05
-5
-5
-5
03/30/05A
X-LAT Thermal Plate RFI from Mech
04/20/05
-43
-65
-65
07/22/05A
Radiators ready for I&T (from Mech
07/22/05
-12
-17
-36
09/13/05
Run Date
08/19/05 08:47
Data Date
08/01/05
© Pri mavera Systems, Inc.
GLAST LAT PROJECT
Level 3 Milestones
Baseline Variance (Organized by Subsystem )
LT-DZ: Baseline Variance
FL-D4: AV: Level 3 Milestones
Report #10
Sheet 10
11
GLAST LAT Project
Mechanical Systems
Milestone Variance Explanation
Radiator RFI -36 days
• Schedule Impact
– No impact to LAT schedule
• Cost Impact
– LM requested additional funds to complete Radiator testing
– Discussions between GLAST, LM and GSFC were held
12
GLAST LAT Project
Mechanical Systems
Cost Report
Reporting
Category
Cost Incurred
During Month
Actual Planned
4.1.8 MECHANICAL SYSTEMS
4.1.8.1 MANAGEMENT
4.1.8.2 RELIABILITY & QUALITY ASSURANCE
4.1.8.3 MECHANICAL SYSTEM DEVELOPMENT
4.1.8.4 THERMAL SYSTEMS DEVELOPMENT (LM)
4.1.8.5 THERMAL CONTROL SYSTEM (SLAC)
4.1.8.6 RADIATORS, HEAT PIPES, THERM TEST, X-LAT (LM)
4.1.8.7 GRID
4.1.8.8 FABRICATION, ASSEMBLY, AND TEST
4.1.8.9 LAT I&T SUPPORT
CAPW[3]Totals:
484
0
0
0
24
-179
0
8
0
337
79
0
0
0
95
165
0
51
22
412
Cum. to Date
Actual Planned
4,110
399
1,088
1,043
715
7,625
656
521
0
16,157
Unfilled
Estimated Final
Orders
Cost
Detail
Balance of Contractor Contract Outstanding
AUG05 SEP05 Contract Estimate Value
Estimated Cost
3,709
393
1,088
1,043
741
7,737
640
709
90
16,151
85
0
0
0
108
59
0
235
13
500
77
0
0
0
79
54
0
3
1
215
-401
-6
0
0
26
112
-16
188
90
-6
3,871
393
1,088
1,043
929
7,851
640
947
104
16,866
3,871
393
1,088
1,043
929
7,851
640
947
104
16,866
216
0
0
0
83
0
0
134
432
13
GLAST LAT Project
Mechanical Systems
Cost Variance Explanation
•
•
Why overrun/underrun?
– LM has overrun their contract
– Proceeding with Radiator testing while cost issue is being worked
What will be done to correct?
– Additional funding required
14
GLAST LAT Project
Mechanical Systems
FTE Report
(DOE/NASA-funded only)
8.0
7.0
6.0
5.0
4.0
3.0
2.0
PLANNED
1.0
ACTUALS
0.0
5
P0
SE
5
G0
5
L0
5
N0
AU
JU
JU
05
AY
M
5
R0
AP
05
AR
M
5
B0
FE
15
GLAST LAT Project
Mechanical Systems
FTE Variance Explanation
•
•
Why overrun/underrun?
– Delay caused by late start of Grid Box #2 assembly work
What is the impact?
– Delay in Grid Static Load Test
– No LAT impact
16