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Books > Professional & Technical > Other technologies > Space science
The objective of this textbook is to provide the mathematical
models and algorithms needed to develop a thorough understanding of
all control system functions of a rigid body spacecraft. Relatively
simple, but practically applicable algorithms are presented rather
than recent advances. We try to avoid detailed and specialized
issues that are of less importance for the fundamental
understanding, such as detailed environment models, etc.
Furthermore, control problems that can be cast in standard
formulations and solved with existing methods are not treated here.
Instead, we intend to provide an understanding of the principles,
put them in an engineering context, and try to give all
explanations as concise as possible. Besides conventional
three-axis attitude control systems, the following topics are
treated in this book:* Control of agile rotation maneuvers using
control moment gyros * Precise pointing control with error classes
for pointing instruments * Control systems with accelerometers and
free-flying test masses, which provide low-disturbance or
disturbance-free environments We believe that these topics are of
considerable relevance for the design of future spacecraft control
systems, especially in the field of science and Earth observation
missions.
A History Today Book of the Year A world-renowned astronomer and an
esteemed science writer make the provocative argument for space
exploration without astronauts. Human journeys into space fill us
with wonder. But the thrill of space travel for astronauts comes at
enormous expense and is fraught with peril. As our robot explorers
grow more competent, governments and corporations must ask, does
our desire to send astronauts to the Moon and Mars justify the cost
and danger? Donald Goldsmith and Martin Rees believe that beyond
low-Earth orbit, space exploration should proceed without humans.
In The End of Astronauts, Goldsmith and Rees weigh the benefits and
risks of human exploration across the solar system. In space humans
require air, food, and water, along with protection from
potentially deadly radiation and high-energy particles, at a cost
of more than ten times that of robotic exploration. Meanwhile,
automated explorers have demonstrated the ability to investigate
planetary surfaces efficiently and effectively, operating
autonomously or under direction from Earth. Although Goldsmith and
Rees are alert to the limits of artificial intelligence, they know
that our robots steadily improve, while our bodies do not. Today a
robot cannot equal a geologist's expertise, but by the time we land
a geologist on Mars, this advantage will diminish significantly.
Decades of research and experience, together with interviews with
scientific authorities and former astronauts, offer convincing
arguments that robots represent the future of space exploration.
The End of Astronauts also examines how spacefaring AI might be
regulated as corporations race to privatize the stars. We may
eventually decide that humans belong in space despite the dangers
and expense, but their paths will follow routes set by robots.
As Apollo 11's Lunar Module descended toward the moon under
automatic control, a program alarm in the guidance computer's
software nearly caused a mission abort. Neil Armstrong responded by
switching off the automatic mode and taking direct control. He
stopped monitoring the computer and began flying the spacecraft,
relying on skill to land it and earning praise for a triumph of
human over machine. In Digital Apollo, engineer-historian David
Mindell takes this famous moment as a starting point for an
exploration of the relationship between humans and computers in the
Apollo program. In each of the six Apollo landings, the astronaut
in command seized control from the computer and landed with his
hand on the stick. Mindell recounts the story of astronauts' desire
to control their spacecraft in parallel with the history of the
Apollo Guidance Computer. From the early days of aviation through
the birth of spaceflight, test pilots and astronauts sought to be
more than "spam in a can" despite the automatic controls, digital
computers, and software developed by engineers. Digital Apollo
examines the design and execution of each of the six Apollo moon
landings, drawing on transcripts and data telemetry from the
flights, astronaut interviews, and NASA's extensive archives.
Mindell's exploration of how human pilots and automated systems
worked together to achieve the ultimate in flight--a lunar
landing--traces and reframes the debate over the future of humans
and automation in space. The results have implications for any
venture in which human roles seem threatened by automated systems,
whether it is the work at our desktops or the future of
exploration.David A. Mindell is Dibner Professor of the History of
Engineering and Manufacturing, Professor of Engineering Systems,
and Director of the Program in Science, Technology, and Society at
MIT. He is the author of Between Human and Machine: Feedback,
Control, and Computing before Cybernetics and War, Technology, and
Experience aboard the USS Monitor.
This textbook covers the range of psychological and interpersonal
issues that can affect astronauts living and working in space. It
deals with the three major risk areas cited by NASA’s Behavioral
Health and Performance Element: Behavioral Medicine, Team Risk, and
Sleep Risk. Based on the author’s more than 50 years of
experience in space-related activities writing, conducting
research, and teaching undergraduate and graduate courses, the book
follows a comprehensive range of topics that include: cognitive
effects; psychiatric issues; cultural influences; salutogenic and
positive aspects of space travel; autonomy and delayed
communication; current plans to return to the Moon and Mars;
analysis of study environments such as the polar regions,
submersible habitats, and space simulation facilities; and more. It
draws on research, literature, and case studies from the 1950s
onward, showing readers in a natural and accessible way how the
field has progressed over time. The book contains ample
end-of-chapter summaries and exercises as well as a complete
glossary of key terms. As such, it will serve students taking
courses in aerospace psychology, psychiatry, sociology, human
factors, medicine, and related social sciences, in addition to
space industry professionals and others interested in the
complexities of people living and working in space.
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