MidSTAR-1

1

• MidSTAR-1
• Annual Review
• 27 April 2005
• USNA Small Satellite Program

Prof Billy Smith, Director, USNA SSP
2
Agenda

• 0815 Welcome
• 0830 Structures
• 0900 Electrical Power
• 0930 Main Comms
• 1000 Break
• 1015 ICSat Experiment
• 1045 Ground Station
• 1115 Operations
• 1145 Lunch
• 1330 Command Data Handling
• 1415 Schedule, Resources and Funding
• 1445 Break
• 1500 Sponsor/IC Conference
• TBD Adjourn

3
Structures

• Landon Foster
• Matthew Sevier
• Erin Winslow

4
Structures
Exterior View
5
Structures

• Clean Exterior View

6
Structures
Removed Panels View
7
Structures
Removed Stringers
8
Structures
9
Structures
10
Structures
11
Structures
12
Structures
13
Structures
14
Structures
15
Structures
16
Structures
17
Structures
18
Structures
19
Structures
20
Structures
21
Structures
22
Structures
23
Master Parts List

• Current Parts/Mass Properties List

24
Solar Panel Guards
25
Installed
26
Inner View
27
Electrical Power

• Aaron Cox
• Rolando Guerra

28
Electrical Power System
28
9
X 16
X 4
5
15
-9
Solar Panels
Batteries 39 V oc
Shunt Regulator
50 V oc Max Power 42 V, 350 mA
29
Overall Power Budget

• Power Requirements Excel Sheet
• Power Budget Excel Sheet

30
Solar Panels
31
Junction Box Layout
32
Junction Box
33
Shunt Regulator
34
Battery Design
35
Printed Circuit Board Layout
36
Printed Circuit Board Layout
37
Inhibit Switch
38
Printed Circuit Board Layout
39
Distributor
40
Battery Box
41
Battery Box (exploded)
42
Switch Box
43
Switch Box
44
Cable List

• Cable List Excel Sheet

45
IPS Operations
Radio Shack 24 Channel Digital Multimeter (Handhel
d, Battery powered)
Thermistors
Agilent Technologies E3617A DC Power Supply 0-60
V 0-1 A
SC Batterues
46
Main Communications

• Jennifer Wall

47
Main Communications
RX-1200 Receiver
GMSK Modem
TX-2400 Transmitter
LU-18 Down Converter
48
Block Diagram
49
Interconnect Diagram
435 MHz
1767 MHz
RX Audio In/Gnd
RCR
D/C
Data In
1, 8 10 11 14 12, 15
Data Out
RSSI
Gnd 12V
RXCA/B 8/10
TXCA/B 9/11
RXDA/B 20/22
C P U
TXDA/B 21/23
CPU1 3
CPU3 4
CPU5 5
CTB 6
TX Audio In/Gnd
CPU0 15
5 9 1 2 4 6 7
CPU2 16
TX
CPU4 17
CTA 18
2 3 4 5
2202.26 MHz
Modem
9V Gnd Gnd 9V Gnd
Gnd 15V
5V Gnd
EPS
12
Gnd Gnd Gnd Gnd
13
24
25
5V 5V 5V
50
Antenna Layout
X MidSTAR principle axis Y Launch vehicle
vertical axis Z Perpendicular to X,Y
51
Mechanical Configuration
Top View
Side View
52
Configurations and Parameters

• What needs to be configured for Space Quest?
• Receiver Mode (WFM)
• Receiver Frequency (435 MHz)
• What parameters need to be monitored?
• Received Signal Strength Indicator (RSSI)
  Voltage vs. dBm
• Transmitter Enable/Disable 5V Enable/0V
  Disable

53
Test Summary

• Completed
• Receiver
• Power Consumption
• Set Frequency and Mode
• Transmitter
• None
• Down Converter
• Power Consumption
• Frequency Drop
• Modem
• None

• Incomplete
• Receiver
• Received Signal Strength Indicator
• E2E Bit Stream
• Transmitter
• Power Consumption with Dummy Load
• Enable/Disable
• E2E Bit stream
• Down Converter
• E2E Bit stream
• Modem
• Power Consumption
• E2E Bit stream
• Full Loop Transmit and Receiver Test
• Ground and Space Transceiver Test

54
Parts list

• Master Parts List

55
ICSat
56
Block Diagram
Present On Order TBD
Data Flow Direction
57
Interconnect Diagram
58
Configuration TableReceiver
59
Configuration TableDemodulator
60
Configuration TableModulator
61
Configuration TableTransmitter
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Configuration Options

• All of these options can be controlled remotely
  from the ground station
• Symbol Rate
• Tracking Loop Gain
• Clock Rate
• Internal/External Clock
• Output Format
• Signal Output Gain
• Random Bit Sequence Test of Transmit Strand
• It will also be possible to scan and transmit on
  a limited range of frequencies with decreased
  performance

63
Basic Mechanical Layout
64
External Mechanical Layout
65
Exploded View
66
Interior View
67
Test Summaries

• RF Closed Loop Communications Test
• Transmit Strand Random Bit Sequence Test
• Power Amplifier Power Characteristics
• Low Noise Amplifier Power Characteristics

68
Parts List

• ICSat Master Parts List

69
Telemetry Points

• The following points will be available for
  download from the PC-104 computer during each
  pass
• AGC Gain
• Noise to Signal Ratio
• Lock Status
• Sample 8-bit stream
• Data Rate

70
Fabrication Plan

• Basic Assembly Concept
• Detailed Assembly Procedures

71
Schedule

• 27MAY05 Final Engineering Drawings Submitted
  for Machine Shop Construction
• 1JUN05 01JUL05 Complete testing of ICSat
• 01JUL05 01AUG05 Complete Interface with
  PC-104
• 01AUG05 Begin flight version construction
• 01SEP05 Flight version complete, submitted to
  structures team

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Ground Station

• Aaron Johnson

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Block Diagram
74
Antenna Equipment Breakdown
75
Rack Layout
76
Parts List
77
Rack Interconnect Diagram
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Data Flow Diagram
79
Parameter Spreadsheet
80
Ground Station Fabrication Schedule
81
Command Data Handling

• Keith Hogie
• Computer Sciences Corp.

82
MidStar CDH Equipment
8 async serial interfaces to instruments and A/D
telemetry collection interfaces
8 port Async Serial
Synchronous serial interfaces to transmitters and
receivers. IP/Frame Relay/HDLC interface
2 port Sync Serial
Ethernet
USB
CDH with PPC 405 processor and 4 TTL or RS-232
serial interfaces, Ethernet, and USB
PPC 405
128 MB
DOC 384MB
100 Mhz PPC 405 CPU
Serial
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MidStar CDH Data Flows

HTTPD
USNA
MIP
External
MDP
port zzz - UDP
UC
UDPstat
port yyy - UDP
SNTP
Script 1 Script 2 Script 3
blindcmd
port xxx- UDP
Telnet
port 23 - TCP
MidStar Ops
SSHD
port 22 - TCP
192.168.x.x 192.168.x.y
192.168.1.a
ttyS0 ttyS1 ttyS2 ttyS3
Console port
driver
ESSC0 ESSC1
Router
Sync Serial
Power Thermal Inst. A Inst. B Inst. C Inst. D
SpaceQuest
Async Serial
Xcvr
MidStar CDH
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End-to-End Diagram
Internet
DB/ Web Server
USNA
Power
ComBlk Xcvr
S/C Antenna
Ground Antenna
Ground Xcvr
CDH
Rx
DC
BS
Tx
Modem
Tx
Rtr
Ant. Cntl
PPC 405 CPU
Ground Router
Rx
Tx
Rx
DC
Inst. A
S/C Antenna
SpcQst Xcvr
Tx
Modem
Tx
Inst. B
Rx
Ops CPU DB/Web Server
Plan/ Sched (NOVA)
Rx
DC
85
Early CDH to Ground Test
Internet
DB/ Web Server
USNA
Power
CDH
Tx
Rtr
PPC 405 CPU
Rx
Inst. A
Tx
Inst. B
Rx
Plan/ Sched (NOVA)
Ops CPU DB/Web Server
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CDH Mission Risks
Impact
Probability
Mitigation
Operating system boot failure on orbit
High No OS boot, no communication, dead spacecraft
Low Due to power failure or storage corruption
Extensive testing of boot sequence and inclusion
of every software recovery option possible.
Possibly second boot image onboard
Failure of transceiver control or data interfaces
Medium Loss of some communication capability
Low Total failure requires multiple failures
Using dual transceivers and control and data
lines. Extensive testing of control modes and
failure recovery options.
Processor mounting and connector issues
High Must have CPU mount and flight connectors
Medium Issues not addressed yet
Identify mounting solution for PC/104 cards.
Also determine flight cabling and connectors for
all interfaces.
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CDH Near Term Risks
Impact
Probability
Mitigation
CDH not ready for instrument integration in
Sept. 05
High Late integration wont allow enough test time
Medium Lots of work needed to get basic CDH in
place by Sept.
Ramp up work efforts from hours per week to many
days per week to make more progress.
CDH telemetry collection not ready by Sept 05
Medium Must have some data collection capability
Medium A/D converters and collection hardware not
defined yet
Prioritize work on A/D telemetry devices and
support software. Identify minimal set of
telemetry points absolutely required.
Disconnects between instrument, CDH, and ground
interfaces
High Difficult to integrate with interfaces that
dont match
Medium Many different groups working on their
separate parts
Hold regular meetings to ensure end-to-end
agreement on parameters, formats, protocols,
commands from instruments, to CDH, to control
center software.
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CDH Status

• Future Activities
• Fault tolerant operating system boot sequence
• Port UDPCapture program
• Port CDH status program
• Configure daemons
• Begin data flows to ground systems via Ethernet
• Port sync serial device driver
• Test serial interfaces to ground router
• Develop commanding scripts
• Develop A/D telemetry collection devices
• Develop instrument interface programs
• Integrate and Test

• Current Status
• Linux development system running on four PPC 405
  systems
• SpaceQuest control interface working

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Operations

• Lindsay Anderson
• Jessica Barrientos
• Curtis Prentice

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DBF Ops

• Unpack clean as necessary
• Comprehensive Performance Test
• Bypass inhibit switches
• Power-on Initial Boot Routine
• S/C broadcasts recognition signal
• EGSE replies with acknowledgement
• Simulated pass ops begin
• EGSE logs on to root
• Experiments sequentially powered on and tested
• Control returned to S/C computer
• Simulated telemetry download
• S/C returned initial state EGSE logs out
• Bypass removed
• Duration 1 day
• On Completion, S/C turned over to IC

91
Ops Timeline
92
Ops Timeline
93
Development Plan

• Microsoft Project

94
Data Flow
95
Interface- Logon Screen
96
Interface- Command Module
97
Interface- SpaceQuest
98
Interface- EPS
99
Interface- MiDn
100
Interface- Archive
101
Schedule, Resources and Funding

• Billy R. Smith, Jr.

102
Schedule

• ..\web-docs\downloads\main\MidStar.mpp

103
Cost
Cost Additional cost over and above that
already budgeted is limited to the cost of
additional consultant time required from CSC.
Funds to pay these costs are available from the
Boeing Gift Fund. They are currently not budgeted
in FY05.
Individual Number of weeks Cost Cost FY05 Budget? Source of funds
Individual Number of weeks Required Available FY05 Budget? Source of funds
Prof. Sellami 10 22,200 22,200 Yes DCGZW
Mr Hogie 14 19,000 19,000 No Boeing Gift Fund
Mr Criscuolo 14 19,000 19,000 No Boeing Gift Fund
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Task List
Subsystem Task Calendar time No. of personnel
Electrical Power Design and Build Flight Batteries 2 weeks 2
Design and Build Distribution Boards 2 weeks 2
Design and Build Switching Boards 2 weeks 2
Build Flight Wiring Harness 2 weeks 2
Design and Build Telemetry Boards 2 weeks 2
Main and Experimental Communications Develop and Troubleshoot Transceiver Configuration Software 4 weeks 1
Integrate Main Comms with CDH 6 weeks 1
Phase II Frequency Allocation Request 2 weeks 1
Ground Support Replace Antenna mount and drive (after delivery) 2 weeks 1
Integrate Ground Station Hardware, Software and Local Area Network 4 weeks 1
Troubleshoot and Configure Ground Station Equipment 4 weeks 1
Command/Data Handling Develop, Troubleshoot and Configure Flight Software 6 weeks 3
Configure Flight Hardware 4 weeks 3
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Personnel
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Availability
Task Calendar time
Louiza Sellami Supervise electrical power develp and build telemetry 10 weeks 100
Drew Jones Supervise Structures 15 weeks 20
Keith Hogie Supervise ground and flight data exchange CDH hardware 15 weeks 50
Ed Criscuolo Flight software 15 weeks 50
Landon Foster EDU, flight superstructure and MGSE build 2 weeks 100
Matthew Sevier EDU, flight superstructure and MGSE build 2 weeks 100
Jennifer Wall Integrate Main Comms with CDH develop and build EGSE 2 weeks 100
Erin Winslow Integrate, troubleshoot and configure ground station equipment Phase II Frequency Allocation Request 4 weeks 100
Christopher Schuster Electrical power system build 2 weeks 100
Sean Jones Develop, Troubleshoot and Configure Flight Software 4 weeks 100
Linda Rall Support structures 8 weeks 80
Jeremy Rubin Support EPS 8 weeks 80
Jocelyn Thomas Support CDH 8 weeks 80
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Time Required vs Time Available
Subsystem Required Available
Structures 10 weeks x 1 people 2 weeks x 2 people 3 weeks x 1 person
Electrical Power 10 weeks x 2 people 10 weeks x 2 people
Main and Experimental Communications 12 weeks x 1 person 6 weeks x 1 person
Ground Support 10 weeks x 1 person 4 weeks x 1 person
Command/Data Handling 10 weeks x 3 people 7.5 weeks x 2 people 4 weeks x 1 person
Total 72 person-weeks 59 person-weeks
Shortfall 1.5 people for 10 weeks
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CDR Action Item Status
..\web-docs\downloads\main\ActionItems.xls