Spacecraft systems

Xem 1-17 trên 17 kết quả Spacecraft systems
  • “Advances in Spacecraft Systems and Orbit Determinations”, discusses the development of new technologies and the limitations of the present technology, used for interplanetary missions. Various experts have contributed to develop the bridge between present limitations and technology growth to overcome the limitations. Key features of this book inform us about the orbit determination techniques based on a smooth research based on astrophysics.

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  • The development and launch of the fi rst artifi cial satellite Sputnik more than fi ve decades ago, propelled both the scientifi c and engineering communities to new heights as they worked together to develop novel solutions to the challenges of spacecraft system design.

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  • Engineers use the concepts and methods of mechanics of solids in designing and evaluating tools, machines, and structures, ranging from wrenches to cars to spacecraft. The required educational back ground for these includes courses in statics, dynamics, mechanics of materials, and related subjects.

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  • In 1969, man travelled to the moon and back, using maths invented by Kepler, Newton and Einstein to calculate trajectories hundreds of thousands of miles long and spacecraft with less on-board computing power than today’s pocket calculator.

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  • The grandest accomplishments of engineering took place in the twentieth century. The widespread development and distribution of electricity and clean water, automobiles and airplanes, radio and television, spacecraft and lasers, antibiotics and medical imaging, computers and the Internet are just some of the highlights from a century in which engineering revolutionized and improved virtually every aspect of human life. In this book, the authors provide a glimpse of the new trends of technologies pertaining to control, management, computational intelligence and network systems....

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  • NASA’s exploration of planets and satellites over the past 50 years has led to the discovery of water ice throughout the solar system and prospects for large liquid water reservoirs beneath the frozen shells of icy bodies in the outer solar system. These putative subsurface oceans could provide an environment for prebiotic chemistry or a habitat for indigenous life.

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  • Aeronautical engineering deals with aircraft design while aerospace engineering is a more modern term that expands the reach of the discipline by including spacecraft design.[13] Its origins can be traced back to the aviation pioneers around the start of the 20th century although the work of Sir George Cayley has recently been dated as being from the last decade of the 18th century. Early knowledge of aeronautical engineering was largely empirical with some concepts and skills imported from other branches of engineering.[14]...

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  • The last decades have marked the beginning of a new era in Celestial Mechanics. The challenges came from several different directions. The stability theory of nearly–integrable systems (a class of problems which includes many models of Celestial Mechanics) profited from the breakthrough represented by the Kolmogorov– Arnold–Moser theory, which also provides tools for determining explicitly the parameter values allowing for stability.

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  • The successful accomplishment of a space mission is dependent on proper and reliable functioning of the power system of the spacecraft in orbit. The stringent demands on performance including weight, volume, reliability, durability, and cost make the design of the spacecraft power system a challenging exercise. Further, since a space mission is inherently expensive, the necessity of optimization and built-in reliability becomes a rule rather than an exception for all the onboard systems.

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  • At this writing the Cassini spacecraft has fired its engine and successfully inserted itself and its precious cargo of scientific instruments into orbit, the first step of its exploration of the Saturnian system. The suspense is not over, however. While exciting images of the rings have been captured, an exotic composition of Phoebe sensed by the mapping spectrometer and unexpected panoply of magnetic waves and plasma dynamics encountered on the incoming trajectory and initial orbit, the Huygens probe is still on board and the first close flyby of Titan has not taken place....

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  • The purpose of this monograph is to formulate a quantitative and self-consistent theoretical approach to wave–particle interactions occurring in space plasmas, and present a logical development of the subject. In the Earth’s magnetosphere, Nature has given us a plasma laboratory that is accessible to observations made by radio, magnetic and electric instruments on the ground, and a great variety of instruments aboard rockets and Earth-orbiting satellites. Spacecraft are making similar observations in the more distant solar system.

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  • In 2003, the National Research Council (NRC) published the first decadal strategy for solar and space physics: The Sun to the Earth—and Beyond: A Decadal Research Strategy in Solar and Space Physics.1 That report included a recommended suite of NASA missions that were ordered by priority, presented in an appropriate sequence, and selected to fit within the expected resource profile for the next decade.

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  • The Observatory carries out front-line astronomical research in three key areas of astrophysics, namely: Solar-System Science, Solar Physics, and Stellar and Galactic Astrophysics. Solar-System research en- compasses the dynamical structure, evolution and origin of objects in the inner and outer solar system and comparative planetology and meteor physics.

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  • NASA’s budget for fiscal year 2003 included funds to begin the Nuclear Systems Initiative focused on research into and development of enhanced capabilities in the general areas of spacecraft power and propulsion systems.

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  • Introduction to Space Sciences and Spacecraft Applications explains the fundamentals of design, application, and operation of space-based systems. It focuses on the most common uses of spacecraft today: communications, remote sensing, and navigation. You will learn about the basic systems required by most spacecraft and the methodology used to design a spacecraft. The complexities of orbital mechanics are also fully explained. Amply illustrated with diagrams and photographs, each chapter contains exercises, historical information, and additional reference materials.

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  • Generating electricity from a heat source using no moving mechanical parts is the ultimate goal of the Defense Threat Reduction Agency’s thermionics program. However, developing thermionic energy conversion devices has proven difficult, although much progress has been made. In spite of initial success during the late 1960s and intermittent funding since that time, for a variety of reasons no thermionic system has yet been developed in the United States that can be used today on Earth or in space.

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  • A long-term goal of our work is to develop the basic control theory for me- chanical systems, and Lagrangian systems in particular. There are several reasons why mechanical systems are good candidates for new results in nonlinear control. On the practical end, mechanical systems are often quite well identified, and ac- curate models exist for specific systems, such as robots, airplanes, and spacecraft.

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