Growth of HgI2 Single Crystalsin Spacelab I
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Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.Keywords:
Spacecraft design
Space environment
space technology
Space vehicle
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The presented slides and accompanying paper focus on radiation in the space environment. Since space exploration has begun it has become evident that the space environment is a highly aggressive medium. Beyond the natural protection provided by the Earth's atmosphere, various types of radiation can be encountered. Their characteristics (energy and nature), origins and distributions in space are extremely variable. This environment degrades electronic systems and on-board equipment in particular and creates radiobiological hazards during manned space flights. Based on several years of space exploration, a detailed analysis of the problems on satellites shows that the part due to the space environment is not negligible. It appears that the malfunctions are due to problems linked to the space environment, electronic problems, design problems, quality problems, other issues, and unexplained reasons. The space environment is largely responsible for about 20% of the anomalies occurring on satellites and a better knowledge of that environment could only increase the average lifetime of space vehicles. This naturally leads to a detailed study of the space environment and of the effects that it induces on space vehicles and astronauts. Sources of radiation in the space environment are discussed here and include the solar activity cycle, galactic cosmic rays, solar particle events, and Earth radiation belts. Future challenges for space radiation environment models are briefly addressed.
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Space Radiation
space technology
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Space Weather
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Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Payload (computing)
Space vehicle
Spacecraft design
space technology
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Diversification of deep space exploration mission is causing a new development of space transportation systems, autonomous GNC technologies is playing key role for deep space exploration. In this paper, domestic deep space exploration program and deep space exploration space transportation systems were reviewed. Then the trend about deep space exploration spacecraft launch vehicle is analyzed. The problems faced by deep space exploration space transportation systems autonomous GNC technology are proposed and the key technical analysis is carried out providing a reference for deep space exploration spacecraft advanced guidance and control technology.
Deep space exploration
space technology
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From the beginning of space era human being has launched more than 5500 rockets in space having different types of payload for various space mission carried out. These payloads, mostly satellites have many types of uses, ranging from earth observation to communication. These satellites, post usage hold no utilization but keep orbiting around the earth. This had leaded the space environment to be filled with such space deployed objects that we call as space debris. Such kind of accumulation of space debris is increasing gradually with each space mission carried out, and is posing a serious threat for our future space missions. Space debris around earth, if not resolved can become the most danger problem to upcoming space missions and research in future space exploration journey. Space debris is a very critical problem that would need an ample of time to come up with some feasible solution. Unfortunately, most of the proposed methods for space debris removal are not successfully functional. Whilekeeping in view, the shortcomings of the existing proposed methods for debris removal, we have reviewed a more practical method that could be implementedsuccessfully. We are proposing a combination ofthe already available technologies in a new way for scavenging the space yard. In this paper, we have studied advanced removal technique like-catching and capturing space debris, reuse of rocket systemand have proposedcost effective plans for removal of space junks from earth orbit using alaser ablation technique.
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space technology
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With the rapid development of microelectronics technology and the increasing requirement of high performance in space missions, existing space-level radiation-hardened components and technology cannot meet the design of high-performance spacecraft. More and more commercial off-the-shelf (COTS) components are widely used in some space missions to achieve high performance. However, COTS components are designed working in terrestrial operating conditions, and the electronic components used in spacecraft usually have a much higher reliability and suitability requirement because of the nature of space missions. Therefore, the successful use of COTS components in space applications is closely related to reliability and suitability issues, which have to be considered before using COTS parts in the harsh environment in space. This article summarizes the state-of-the-art COTS components suitable for space applications, discusses the problems and risks of using COTS components in space, and presents a suitability analysis approach for COTS components in Chinese space projects. The approach consists of analysis, tests, and evaluation of thermal environment, vibration and shock environment, radiation environment, and vacuum environment. In order to illustrate the usage of the approach, two examples have been selected as case studies. One is the Chinese SZ-4 spaceship with a COTS part AD595 and the other is a joint space project between the Europe Space Agency and the Chinese National Space Administration, which is called the Double-Star Project, with a COTS part MAX471.
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Commercial off-the-shelf
space technology
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The big effect of space environment upon launch and operation of space vehicle are discussed.The needs for space environment design reliability,space environment test and space environment indemnification of space vehicle must be emphasized.The space environment factors,which are necessary for the design,test and operation of space vehicle,are developed.
Space environment
Space vehicle
space technology
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Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Space vehicle
Spacecraft design
space technology
In-space propulsion technologies
Space environment
Mission control center
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Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Spacecraft design
Space vehicle
space technology
Space environment
Space research
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Citations (44)
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Spacecraft design
Space environment
space technology
Space research
Space vehicle
Space Suit
Space Station Freedom
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The Space Exploration Initiative (SEI) establishes the long-term goal of returning to the moon and then exploring Mars. One of the prerequisites for SEI is the exploration technology program which includes program elements on space nuclear power and surface solar power. These program elements in turn build upon the ongoing NASA research and technology base program in space energy conversion. NASA's future space mission planning encompasses both robotic and piloted missions spanning a range of power levels and operational conditions. In response to the breadth of future candidate missions, NASAs current research and technology program in space energy conversion spans a number of technologies so that spacecraft designers can be make intelligent decisions about future power system options. These technologies are discussed.
Space program
space technology
In-space propulsion technologies
Deep space exploration
Space research
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