A Theoretical Study of Space Shield Materials PDF Download
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Author: Keith L. Holland
Publisher:
ISBN:
Category : Space ships
Languages : en
Pages : 104
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Author: Keith L. Holland
Publisher:
ISBN:
Category : Space ships
Languages : en
Pages : 104
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722482985
Category :
Languages : en
Pages : 42
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Book Description
The space program is faced with two difficult radiation protection issues for future long-term operations. First, retrofit of shield material or conservatism in shield design is prohibitively expensive and often impossible. Second, shielding from the cosmic heavy ions is faced with limited knowledge on the physical properties and biological responses of these radiations. The current status of space shielding technology and its impact on radiation health is discussed herein in terms of conventional protection practice and a test biological response model. The impact of biological response on the selection of optimum materials for cosmic ray shielding is presented in terms of the transmission characteristics of the shield material. Although the systematics of nuclear cross sections are able to demonstrate the relation of exposure risk to shield-material composition, the current uncertainty in-nuclear cross sections will not allow an accurate evaluation of risk reduction. This paper presents a theoretical study of risk-related factors and a pilot experiment to study the effectiveness of choice of shield materials to reduce the risk in space operations. Kim, Myung-Hee Y. and Wilson, John W. and Thibeault, Sheila A. and Nealy, John E. and Badavi, Francis F. and Kiefer, Richard L. Langley Research Center RTOP 199-45-16-11...
Author: John William Wilson
Publisher:
ISBN:
Category : Extraterrestrial radiation
Languages : en
Pages : 496
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The purpose of the workshop was to define requirements for the development and evaluation of high performance shield materials and designs and to develop ideas regarding approaches to radiation shielding.
Author: Myung-Hee Y. Kim
Publisher:
ISBN:
Category : Shielding (Radiation)
Languages : en
Pages : 44
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 220
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 744
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 464
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Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721018444
Category :
Languages : en
Pages : 32
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Book Description
This part of Exploration Atmospheres Working Group analyses focuses on the potential use of nonmetallic composites as the interior walls and structural elements exposed to the atmosphere of the spacecraft or habitat. The primary drive to consider nonmetallic, polymer-based composites as an alternative to aluminum structure is due to their superior radiation shielding properties. But as is shown in this analysis, these composites can also be made to combine superior mechanical properties with superior shielding properties. In addition, these composites can be made safe; i.e., with regard to flammability and toxicity, as well as "smart"; i.e., embedded with sensors for the continuous monitoring of material health and conditions. The analysis main conclusions are that (1) smart polymer-based composites are an enabling technology for safe and reliable exploration missions, and (2) an adaptive, synergetic systems approach is required to meet the missions requirements from structure, properties, and processes to crew health and protection for exploration missions.Barghouty, A. F. and Thibeault, S. A.Langley Research Center; Marshall Space Flight CenterRADIATION SHIELDING; EXTRATERRESTRIAL RADIATION; FLAMMABILITY; TOXICITY; SPACECREWS; AEROSPACE MEDICINE; HABITATS; PROTECTION
Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2300
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Book Description
