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The Lunar Orbiter Meteoroid Experiments -Description and Results from Five Spacecraft.

作者:科技文献资料网 时间:2017-03-23 14:05:35  浏览:9067   来源:科技文献资料网
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[文献类型]:科技报告
[标题]:The Lunar Orbiter Meteoroid Experiments -Description and Results from Five Spacecraft.
[作者]:grew, c. w. gurtler, c. a.
[机构]:National Aeronautics and Space Administration. Langley Research Center,Langley Station,Va.
[关键词]:lunar atmospheres,lunar orbiter,meteoroid hazards,meteoroids,apollo flights,detectors,
[出版年份]:1971
[报告号]:NASA-TN-D-6266, L-7600
[报告时间]:Jun 71,
[页码]:44p
[馆藏索取号]:N71-28109
[总页数]:47


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[唯一标识符]:CDSITC.AEROSPACE.N90-19415
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1990-19415; Reference AN: N90-19415
[标题]:ROCOPT: A user friendly interactive code to optimize rocket structural components
[作者]:RULE WILLIAM K
[书名]:IN: Alabama Univ., Research Reports: 1989 NASA/ASEE Summer Faculty Fellowship Program 28 p (SEE N1990-19390 12-31)
[来源]:In Alabama Univ. Research Reports: 1989 NASA/ASEE Summer Faculty Fellowship Program 28 p (SEE N1990 19390 12 31)
[文摘]:ROCOPT is a user-friendly, graphically-interfaced, microcomputer-based computer program (IBM compatible) that optimizes rocket components by minimizing the structural weight. The rocket components considered are ring stiffened truncated cones and cylinders. The applied loading is static, and can consist of any combination of internal or external pressure, axial force, bending moment, and torque. Stress margins are calculated by means of simple closed form strength of material type equations. Stability margins are determined by approximate, orthotropic-shell, closed-form equations. A modified form of Powell's method, in conjunction with a modified form of the external penalty method, is used to determine the minimum weight of the structure subject to stress and stability margin constraints, as well as user input constraints on the structural dimensions. The graphical interface guides the user through the required data prompts, explains program options and graphically displays results for easy interpretation. (Author)
[关键词]:COMPUTER PROGRAMMING; COMPUTER PROGRAMS; MECHANICAL PROPERTIES; ORTHOTROPIC SHELLS; STRUCTURAL DESIGN; STRUCTURAL WEIGHT; BENDING MOMENTS; COMPUTER TECHNIQUES; INTERNAL PRESSURE; MICROCOMPUTERS ; TORQUE
[出版年份]:1989
[专业领域]:SPACECRAFT PROPULSION AND POWER
[唯一标识符]:CDSITC.CANADADR.126837
[文献来源]:加拿大发展研究报告(CanadaDRS)
[文献类型]:科技报告
[资源原始索取号]:46-01830
[标题]:Sprays from Boston III Aircraft. Series I. 500 lb Mk III S.C.I. with Pipe Fairings Removed
[作者]:Priestley, C.H.B.
[机构]:Suffield Experimental Station, Ralston ALTA (CAN)
[出版单位]:Defense R&D Department Canada
[文摘]:Seven trials done using thickened methyl salicylate and thickened mustard.
[出版时间]:19 Dec 1941
[出版年份]:1941
[报告号]:SES-3;
[页码]:7
[总页数]:0

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