In the last 11 years, a lot has changed in this field. That's to be expected in a technology that is driven by Moore's Law, where complexity doubles every 18 months or so. So we have a factor of 7 or so, but actually the rate of change is increasing.Where we are today is machines built with multiple cores on one chip, each core being a complete computer. The same communication schemes discussed in this book are used, with the same trade-off's, shared memory or communication channel....

This book documents the development of missile and spacecraft guidance computers from the earliest efforts to the current Space Station and satellite onboard systems. This book developed from the author's presentation at the Johns Hopkins University’s Applied Physics Laboratory in 2009 for the Workshop on Flight Software. The second and third editions were expanded with new material and references. The fourth edition updated the material to the state of the art in 2014, with discussions of...

This is a book on energy storage. Most electrical energy is AC, and is used when generated. Direct current is stored in battery, but there is no such things as an AC battery. There are other ways to store the energy. Solar cells only produce electricity during the day, and we might need the energy at night. Hydro power system generate power when there is a sufficient amount of water flow. Nuclear plants generate power as needed. Power from geothermal wells is generally available 24x7.

This book is intended as an introduction to the topics of computer virtualization and the cloud. We will see how the topics come together.The book includes extensive reference and background material. It will not teach you to be an expert in virtualization or cloud technologies. It will teach you to understand and appreciate these topics, and how they fit into the big picture of computing. The best way to learn these technologies is to use them.

Apollo was built in the era of “big iron” computer mainframes. The concept of an onboard computer for space missions was radically new. There was only one place in the world that could design the Apollo Guidance Computers, and that was MIT. It took most of the U.S.’s production of integrated circuits, another radical idea replacing individual vacuum tubes, to build the AGC’s. It took 2,000 person-years of independent code review and validation to ensure that they would operate properly.

This book is about the Personal Robots from the 1980's that inspired hopes for the future. This was triggered, in part, by the robots of the Star War series. R2D2 was based on the three service droids of the early Science Fiction movie, Silent Running. They were named Huey, Louie, and Dewey. At the same time, personal computers were emerging as affordable and easier to use. The excitement and the technology reached a tipping point. Before this time, robotics mainly meant large hydraulic un...

This book discusses the application of Cubesat Clusters, Constellations, and Swarms in the exploration of the solar systems. This includes the Sun, the 8 primary planets and Pluto, many moons, the asteroid belt, comets, the ring systems of the four gas giants, and comets. There is a lot to explore. U.S. Spacecraft have been to all of the planets in the solar system. Although the planets (and Pluto) have been visited by spacecraft, Earth's moon has been somewhat explored, and many of the ot...

This book starts with the British Army's attempt to take Fort Duquesne (currentl day Pittsburgh). Along the way is Fort Cumberland, the staging area. The expedition went horribly wrong, with the British taking massive causalitys and loosing their payroll in gold. It has never been found. Those are the facts. This is historical fiction, exploring verious threads about what could have happened. The author is a native of Cumberland, Maryland, the location of Fort Cumberland. This is a tale of...

The Town of Lonaconing was located centrally in the Georges Creek Valley, between Frostburg at the north, and Westernport at the south. Both towns at the extremes had rail junctions. There were plans to extend the canal through Westernport. Lonaconing became the largest among the dozen or so towns along the Georges Creek, serving as a manufacturing center, a home for companies and miners, and a major retail center. Today Lonaconing is a town of some 1,200, still the largest among the Georg...

The book discusses the topic of the search for Extraterrestrial life, that is, life not on Earth. The search is taking place in the planets and moons of our solar system, and on Exoplanets, elsewhere in our galaxy. The problem is, we only have 1, albeit vastly diversified, example of life. We can conjecture that life only has a chance in certain thermal ranges (the Goldilocks zone), so that's where we look. Unfortunately, strange life was observed at deep ocean thermal vents, with chemical...

The ARM processor has come a long way from an obscure British microprocessor of the 1980's to being the dominant basis for the current generation of smart phones, and tablet computers, as well as its use in space They are also in television set-top boxes, routers, and embedded applications. The ARM architecture units represent the highest volume of 32-bit processors being shipped, as of this writing.ARM's can be found on space missions, most likely in Cubesats, but also on the ISS....

This book discusses the subject of lava tubes on Earth, the Moon and Mars, and their potential applications for habitats and planetary settlements. To implement this, we need robotic explorers that can scout the lava tubes. This book will discuss an approach for that, using Cube-Xs, which are standardized architectures, based on the Cubesat model. Lava tubes are primary caves, not formed from the erosion of softer rock. We will discuss autonomous exploration of the Lava tubes by multiple u...