THEMIS Instrument CDR 1 UCB, April 19-20, 2004 Flux Gate Magnetometer and Boom Thermal Christopher Smith Thermal Engineer [email protected] 510-642-2461
THEMIS Instrument CDR 1 UCB, April 19-20, 2004
Flux Gate Magnetometer and BoomThermal
Christopher SmithThermal Engineer
THEMIS Instrument CDR 2 UCB, April 19-20, 2004
FGM
• Two carbon fiber tubes joined by an elbow hinge
• Frangibolt release on the base hinge
• Elbow hinge is capture only, no release
THEMIS Instrument CDR 3 UCB, April 19-20, 2004
FGM Geometry Model
FGM Model
Deployed
Stowed
THEMIS Instrument CDR 4 UCB, April 19-20, 2004
FGM / Map
MLI30% AZ2000IECW White Paint
70% VDA Tape
= 0.5 to 0.9
AZ2000IECW White Paint
Alodined Aluminum on Undersides
THEMIS Instrument CDR 5 UCB, April 19-20, 2004
FGM Model Inputs
• Optical materials– MLI– Vapor Deposited Aluminum Tape– AZ 2000 IECW White Paint– Alodined Aluminum
• Thermophysical materials– Aluminum, 6061– M55J– ULTEM– Dexter Hysol 9349
• Heaters– None in current model though provisions have been made for deployment heaters if needed and it
looks like we will need them.
• Conductors– Deck Hinge ULTEM isolators, 0.0078 < G < .0133 W/C each– Conductance through deck hinge, 0< G <.02 W/C– Conductance through adhesive to boom tube, 6.6 W/C– Conductance through adhesive at elbow hinge, 4.9 W/C– Conductance through elbow hinge, 0< G < 0.04 W/C– Conductance through adhesive to Sensor, 3.3 W/C– G10 Isolation mounts at FGM sensor, 0.01 W/C– Elbow Latch Tower ULTEM isolators, 0.0078 < G < .0133 W/C each
• Power Dissipation– 0 Watts Nominal
Elbow Hinge
THEMIS Instrument CDR 6 UCB, April 19-20, 2004
FGM Case Sets
• Identical case sets to the SCM
* UCB model eclipse time, boundary conditions do not yet include eclipse
THEMIS Instrument CDR 7 UCB, April 19-20, 2004
FGM Deployed – Nominal Plot
-100
-80
-60
-40
-20
0
20
50K 100K 150K 200K 250K 300K
FGM - 30% AZ 2000 70% VDA (04/14/04)SAA 103 Hot - SAA 90 Cold - SAA 77 Cold - SAA 77 Cold Low Power
Tem
pera
ture
Time
INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR TOPDECK INNER BOOM OUTER BOOM
DECK HINGE ELBOW HINGE SENSOR TOPDECK INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE
SENSOR TOPDECK INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR TOPDECK
THEMIS Instrument CDR 8 UCB, April 19-20, 2004
FGM Deployed – Top and Bottom to Sun Plot
-80
-60
-40
-20
0
20
40
60
80
100
40K 50K 60K 70K 80K 90K 100K 110K
FGM - 30% AZ 2000 70% VDA (04/14/04)SAA 0 Hot - SAA 180 Cold
Tem
pera
ture
Time
TOPDECK INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR
TOPDECK INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR
THEMIS Instrument CDR 9 UCB, April 19-20, 2004
FGM Stowed – Nominal Plots
-100
-80
-60
-40
-20
0
20
40
60
80
100
20K 40K 60K 80K 100K 120K 140K 160K 180K 200K
FGM Stowed - 30% AZ 2000 70% VDA (04/14/04)SAA 103 Hot - SAA 77 Cold - SAA 0 Hot - SAA 180 Cold
Tem
pera
ture
Time
TOPDECK INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR TOPDECK
INNER BOOM OUTER BOOM DECK HINGE ELBOW HINGE SENSOR TOPDECK INNER BOOM
OUTER BOOM DECK HINGE ELBOW HINGE SENSOR TOPDECK INNER BOOM OUTER BOOM
DECK HINGE ELBOW HINGE SENSOR FGM FRANGIBOLT SCM FRANGIBOLT
THEMIS Instrument CDR 10 UCB, April 19-20, 2004
FGM Results Table
THEMIS Instrument CDR 11 UCB, April 19-20, 2004
FGM DeployedColdest Heat Map
THEMIS Instrument CDR 12 UCB, April 19-20, 2004
FGM DeployedHot Temperature Map
THEMIS Instrument CDR 13 UCB, April 19-20, 2004
FGM StowedColdest Temperature Map
THEMIS Instrument CDR 14 UCB, April 19-20, 2004
FGM StowedHottest Temperature Map
THEMIS Instrument CDR 15 UCB, April 19-20, 2004
Search Coil Magnetometer and BoomThermal
Christopher SmithThermal Engineer
THEMIS Instrument CDR 16 UCB, April 19-20, 2004
SCM Model
• Carbon Fiber boom mounted on the top deck
• Frangibolt activated deployment
• Sensor mounted in PEEK structure
THEMIS Instrument CDR 17 UCB, April 19-20, 2004
SCM Geometry Model
SCM Model
Deployed
Stowed
THEMIS Instrument CDR 18 UCB, April 19-20, 2004
SCM / Map
MLI
30% AZ2000IECW White Paint
70% VDA Tape
= 0.5 to 0.9
AZ2000IECW White Paint
Alodined Aluminum on Undersides
THEMIS Instrument CDR 19 UCB, April 19-20, 2004
SCM Model Inputs
• Optical materials– MLI– Vapor Deposited Aluminum Tape– AZ 2000 IECW White Paint– Alodined Aluminum
• Thermophysical materials– Aluminum, 6061– M55J– ULTEM– Dexter Hysol 9349
• Heaters– None in current model though provisions have been made for deployment heaters if needed and it
looks like we will need them.
• Conductors– Deck Hinge ULTEM isolators, 0.0078 < G < .0133 W/C each– Conductance through deck hinge, 0< G <.02 W/C– Conductance through adhesive to boom tube, 6.6 W/C– Conductance through adhesive to Sensor, 3.3 W/C– PEEK isolation of SCM sensor, 0.01 W/C– Release Tower ULTEM isolators, 0.0078 < G < .0133 W/C each
• Power Dissipation– 0 Watts Nominal
Deck Hinge
THEMIS Instrument CDR 20 UCB, April 19-20, 2004
SCM Case Sets
THEMIS Instrument CDR 21 UCB, April 19-20, 2004
SCM Deployed – Nominal Plot
Deployed SCM Plot, Nominal Case Sets
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
50K 100K 150K 200K 250K 300K
SCM - 30% AZ 2000 70% VDA (04/14/04)SAA 103 Hot - SAA 90 Cold - SAA 77 Cold - SAA 77 Cold Low Power
Tem
pera
ture
Time
BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK
BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK
THEMIS Instrument CDR 22 UCB, April 19-20, 2004
SCM Deployed – Top and Bottom to Sun Plot
Deployed SCM Plot, Top and Bottom to Sun
-80
-60
-40
-20
0
20
40
60
80
100
40K 50K 60K 70K 80K 90K 100K 110K
SCM - 30% AZ 2000 70% VDA (04/12/04)SAA 0 Hot - SAA 180 Cold
Tem
pera
ture
Time
BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK
THEMIS Instrument CDR 23 UCB, April 19-20, 2004
SCM Stowed – Nominal Plots
-100
-80
-60
-40
-20
0
20
40
60
80
100
20K 40K 60K 80K 100K 120K 140K 160K 180K 200K
SCM Stowed - 30% AZ 2000 70% VDA (04/14/04)SAA 103 Hot - SAA 77 Cold Low Power - SAA 0 Hot - SAA 180 Cold
Tem
pera
ture
Time
BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK BOOM INNER BOOM OUTER SENSOR
DECK HINGE TOPDECK BOOM INNER BOOM OUTER SENSOR DECK HINGE TOPDECK BOOM INNER
BOOM OUTER SENSOR DECK HINGE TOPDECK FGM FRANGIBOLT SCM FRANGIBOLT
THEMIS Instrument CDR 24 UCB, April 19-20, 2004
SCM PlotCross Tube Temp Differentials
Cross-Tube Temperature Differentials
THEMIS Instrument CDR 25 UCB, April 19-20, 2004
SCM Plot Axial Temperature Differentials
Axial Temperature Differentials
THEMIS Instrument CDR 26 UCB, April 19-20, 2004
SCM Results Table
THEMIS Instrument CDR 27 UCB, April 19-20, 2004
SCM DeployedColdest Heat Map
THEMIS Instrument CDR 28 UCB, April 19-20, 2004
SCM DeployedHot Temperature Map
THEMIS Instrument CDR 29 UCB, April 19-20, 2004
SCM StowedColdest Temperature Map
THEMIS Instrument CDR 30 UCB, April 19-20, 2004
SCM StowedHottest Temperature Map