1. Professional Development Short Course On:
Space Power Systems
Instructor:
Robert C. Detwiler
ATI Course Schedule: http://www.ATIcourses.com/schedule.htm
349 Berkshire Drive • Riva, Maryland 21140
888-501-2100 • 410-956-8805
Website: www.ATIcourses.com • Email: ATI@ATIcourses.com

2. Space Systems - Intermediate Design
Summary
This multi-disciplinary course provides a complete
summary of the technologies needed to understand and
develop spacecraft systems and instrumentation. The
course presents a systems engineering approach for
understanding the design and testing of spacecraft
systems. The course highlights the underlying scientific
and engineering foundations needed to develop space
systems, as well as current practices. Case studies are February 23-27, 2009
used to pinpoint the key issues and trade-offs in modern
design, and to illustrate the lessons learned from past Beltsville, Maryland
successes and failures.
This course provides a strong technical base for $1895 (8:30am - 4:00pm)
leadership in systems engineering or the management of 5 top experts in 1 week!
space systems. Technical specialists will find the broad
perspective and knowledge useful in communicating with "Register 3 or More & Receive $10000 each
Off The Course Tuition."
other space system specialists in analyzing design options
and trade-offs.
The emphasis will be on how today's technology is Course Outline
incorporated into the planning, designing, fabrication, 1. Space Systems Engineering. Fundamentals of
integration, and testing of modern space systems. Each systems engineering. System development process.
participant will receive a complete set of notes and the Engineering reviews. Management of space systems.
award-winning textbook Space Systems written by the
instructors. The textbook and course notes provide an 2. Orbital Mechanics. Fundamentals of dynamics.
authoritative reference that focuses on proven techniques Reference frames. Time. Two-body central force
and guidelines for understanding, designing, and motion. Two-body problem. Trajectory perturbations.
managing modern space systems. Orbit determination. Interplanetary missions and
patched conics.
3. Spacecraft Propulsion/Rocket Propulsion.
Instructors Force-free rocket motion. Rocket motion with gravity.
Launch flight mechanics. Transfer trajectories.
Dr. Vincent L. Pisacane is a fellow of the AIAA, and is
4. Flight Mechanics and Launch Systems.
the R.A. Heinlein Professor of Aerospace
Hohman transfer orbits. Reaching a target orbit. Solid
Engineering at the United States Naval
and liquid propellant systems. Other propulsion
Academy. He was formerly Head of the
systems. Selected launch systems.
APL Space Department. He has 35 years
of experience in space research and the 5. Spacecraft Attitude Determination. Attitude
development of spacecraft and sensors and kinematics. Attitude determination
instrumentation. He is the editor of the systems. Attitude estimation and system identification.
textbook Space Systems published by Attitude error specification and analysis. Mission
Oxford Press. experiences.
Dr. Mark E. Pittelkau is president of Aerospace 6. Spacecraft Attitude Control. Rotational
ControlSystems Engineering and Research dynamics and environmental disturbance torques.
(www.ascinnovations.com). His experience in satellite Attitude actuators. Passive and active attitude control
systems includes the design, implementation, and testing methods. Attitude controllers and stability. Mission
of orbit determination algorithms, attitude determination, experiences.
and control systems. His current work in attitude control 7. Configuration and Structural Design.
systems includes control-structure interaction, pointing Structural design requirements and interfaces.
jitter and stability analysis, concept studies for various Requirements for launch, staging, spin stabilization
attitude control systems, and sensor alignment calibration. stages. Acoustics, acceleration, transients and shock.
Jay Jenkins is a power system engineer at JHU/APL Designing and testing. Stress-strain analysis. Margins
with 15 years of experience in design and analysis of of safety. Finite Element Analysis. Structural dynamics.
aerospace power systems with an emphasis on battery Testing.
and solar array technology. 8. Space Power Systems. Energy storage,
William E. Skullney is Supervisor of the Mechanical distribution, and control. Environmental effects on solar
Systems Group at JHU/APL and has over 20 years cells. Orbital considerations. Energy converters. Solar
experience in the design, analysis and testing of cells and solar arrays. Batteries and energy storage.
spacecraft mechanical systems. He specializes in Characteristics of different batteries. Strong emphasis
structural engineering and analysis and has led structural on translating mission requirements into a power
engineering efforts for the Delta 180 series programs and system design.
the Midcourse Space Experiment Program. 9. Space Thermal Control. Radiation and thermal
Clarence Wingate has 35 years of space experience fundamentals. Heat transfer and energy balance.
and specializes in the thermal design, analysis and testing Choice of thermal materials. The thermal design and
of spacecraft. He is retired from JHU/APL. testing process.
Register online at www.ATIcourses.com or call ATI at 888.501.2100 or 410.956.8805 Vol. 96 – 21

3. www.ATIcourses.com
Boost Your Skills 349 Berkshire Drive
Riva, Maryland 21140
with On-Site Courses Telephone 1-888-501-2100 / (410) 965-8805
Tailored to Your Needs
Fax (410) 956-5785
Email: ATI@ATIcourses.com
The Applied Technology Institute specializes in training programs for technical professionals. Our courses keep you
current in the state-of-the-art technology that is essential to keep your company on the cutting edge in today’s highly
competitive marketplace. Since 1984, ATI has earned the trust of training departments nationwide, and has presented
on-site training at the major Navy, Air Force and NASA centers, and for a large number of contractors. Our training
increases effectiveness and productivity. Learn from the proven best.
For a Free On-Site Quote Visit Us At: http://www.ATIcourses.com/free_onsite_quote.asp
For Our Current Public Course Schedule Go To: http://www.ATIcourses.com/schedule.htm

4. Space Systems I - Power Systems Summary 2
Course Overview
• Provides end-to-end synopsis of space power systems
– Power strategies for mission duration and destination
• Solar and Nuclear Power Sources
– Review of orbital mechanics and space environment
– Solar Array considerations
– Radioisotope Thermoelectric Generator basics
• Energy Storage Technologies
– Provides overview of available battery cell technologies
• Power Control electronics options are covered
• Power Systems for current missions are presented

5. Space Systems I - Power Systems Summary 3
Application Range of Power Sources
100
Nuclear Reactor
Dynamic/Thermoelectric
Chemical
Dynamic Fuel
10 APUs* Cell
Load
Power Photovoltaic
kW or
Radioisotope
1 Thermoelectric
Generators
Primary
Batteries
1Day 1Mo. 1Yr. 10Yr. 100Yr.
.1
0.1 1.0 10 100 103 104 105 106
*APU = Auxiliary Power Unit After Chetty, 1988
Time Hours

6. Space Systems I - Power Systems Summary 4
Limits of Solar Power

7. Space Systems I - Power Systems Summary 5
Annual Earth Sun Positions
Mars: 2.17 x 108 Km

8. Space Systems I - Power Systems Summary 6
Earth’s Radiation Belts
11 Year Solar Cycle: Peak 12/2001, Minimum 2007

9. Space Systems I - Power Systems Summary 7
Solar Spectral Irradiance Vs
Wavelength (AM0 Solar Constant)
American Society
Testing & Materials (1999) 136.6 W/cm2
Mars 58.86 W/cm2

10. Space Systems I - Power Systems Summary 8
Triple-junction Solar Cell
Cross Section & Quantum Efficiencies
Spectrolab 3J
Top cell: Bottom cell:
short wavelengths long wavelengths
Middle cell

11. Space Systems I - Power Systems Summary 9
GPHS RTG Cross Section

12. Space Systems I - Power Systems Summary 10
Electrochemical Operation of a Cell
(Discharge)

13. Space Systems I - Power Systems Summary 11
Space Station NiH2 Battery

14. Space Systems I - Power Systems Summary 12
MER Power Functional Block Diagram
Lightning
Umbilical to LCE Suppression
Assembly
Cruise Shunt Limiter Cruise
1/2 Panel Assembly Shunt
(x5)
(5 Stages) Radiator
1/2 Panel CRUISE
STAGE
Cruise Solar Array (4 Panels) Vc
Cruise
Cruise Power LOADS
CRUISE PYRO LOADS
Power Distribution
Converter Unit
Unit
Rover Solar
Rover Solar
Rover Solar
Array PanelSolar
Rover (x6) Rover Shunt Limiter
Array
Rover Solar Rover
Array Solar
Rover
Array Unit
Array (x2) Shunt ROVER
Array Panel (x6) (2 Stages) Radiator STAGE
Rover Pyro
Pyro Bus A Rover
Switching Pyro Bus B
Rover Power LOADS
ROVER PYRO LOADS
Assembly Battery Distribution
T
Control Unit Rover
Li-Ion T
Batteries Board Power VME Loads
(x2) Converter IMU, Cameras
Unit
Lander Pyro Lander Pyro
IMU PCU Switching Switching
BACkSHELL PYRO Backshell Pyro LiSo2
LOADS Assembly Interface
Switching Lander Batteries
Power (x5)
Assembly
Lander LOADS Control
Power Unit
Distribution
Thermal
LANDER PYRO LOADS
LANDER Unit RADAR ALTIMETER
BACKSHELL Battery
(x2) STAGE
STAGE
dgn- 2/1/02

15. Boost Your Skills
with On-Site Courses
Tailored to Your Needs
The Applied Technology Institute specializes in training programs for technical
professionals. Our courses keep you current in the state-of-the-art technology that is
essential to keep your company on the cutting edge in today’s highly competitive
marketplace. For 20 years, we have earned the trust of training departments nationwide,
and have presented on-site training at the major Navy, Air Force and NASA centers, and for a
large number of contractors. Our training increases effectiveness and productivity. Learn
from the proven best.
ATI’s on-site courses offer these cost-effective advantages:
• You design, control, and schedule the course.
• Since the program involves only your personnel, confidentiality is maintained. You can
freely discuss company issues and programs. Classified programs can also be arranged.
• Your employees may attend all or only the most relevant part of the course.
• Our instructors are the best in the business, averaging 25 to 35 years of practical, real-
world experience. Carefully selected for both technical expertise and teaching ability, they
provide information that is practical and ready to use immediately.
• Our on-site programs can save your facility 30% to 50%, plus additional savings by
eliminating employee travel time and expenses.
• The ATI Satisfaction Guarantee: You must be completely satisfied with our program.
We suggest you look at ATI course descriptions in this catalog and on the ATI website.
Visit and bookmark ATI’s website at http://www.ATIcourses.com for descriptions of all
of our courses in these areas:
• Communications & Computer Programming
• Radar/EW/Combat Systems
• Signal Processing & Information Technology
• Sonar & Acoustic Engineering
• Spacecraft & Satellite Engineering
I suggest that you read through these course descriptions and then call me personally, Jim
Jenkins, at (410) 531-6034, and I’ll explain what we can do for you, what it will cost, and what
you can expect in results and future capabilities.
Our training helps you and your organization
remain competitive in this changing world.
Register online at www.aticourses.com or call ATI at 888.501.2100 or 410.531.6034