热门站点| 世界资料网 | 专利资料网 | 世界资料网论坛
收藏本站| 设为首页| 首页

NASA images 6 (Videotape)

作者:科技文献资料网 时间:2017-06-24 11:44:38  浏览:8283   来源:科技文献资料网
下载地址: 点击此处下载
[唯一标识符]:CDSITC.AEROSPACE.N94-15336
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1994-15336; Reference AN: N94-15336
[标题]:NASA images 6 (Videotape)
[文摘]:The videotape is comprised of clips regarding aircraft safety and development through NASA research at its various centers. (CASI)
[关键词]:AIRCRAFT SAFETY; NASA PROGRAMS; RESEARCH AND DEVELOPMENT; RESEARCH FACILITIES; AIRCRAFT DESIGN; FLIGHT SAFETY
[出版年份]:1988
[专业领域]:AIR TRANSPORTATION AND SAFETY
下载地址: 点击此处下载
[文献类型]:科技报告
[标题]:Solidification of Alloys (TEXUS 1).
[作者]:fredriksson, h. carlberg, t.
[机构]:Royal Inst. of Tech.,Stockholm (Sweden). Dept. of Casting of Metals.*National Aeronautics and Space Administration,Washington,DC.
[关键词]:convection,eutectic alloys,furnaces,low gravity manufacturing,solidification,spaceborne experiments,aluminum alloys,copper alloys,directional solidification (crystals),eutectics,mirrors,reduced gravity,sediments,foreign technology,tin alloys,zinc alloys,ntisnasae,ntisfnsw
[出版年份]:1991
[报告时间]:cFeb 91,
[页码]:2p
[馆藏索取号]:N91-31400
[总页数]:3


[唯一标识符]:CDSITC.AEROSPACE.A88-17777
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A1988-17777; Reference AN: A88-17777
[标题]:Phobos - Cracks or grooves? (Fobos - Treshchiny ili borozdy?)
[作者]:BELOV VALENTIN PAVLOVICH
[来源]:Priroda. Sept. 1987, p. 12 17.
[文摘]:A novel hypothesis for the origin of the parallel grooves on Phobos is proposed. After discarding the crack hypothesis, the paper suggests that the grooves formed as the result of a collision with a giant meteorite or fragments from near-Mars orbit. The grooves are considered to be 'furrows' which were 'ploughed' by planetary material displaced or even torn off as a result of the impact. This hypothesis provides a unified explanation for the formation of the giant crater on Phobos, the enigmatic grooves, and the absence of fragments. (B.J.)
[关键词]:GROOVES ; PHOBOS ; PLANETARY STRUCTURE; SATELLITE SURFACES; DEIMOS ; PLANETARY EVOLUTION; SURFACE PROPERTIES
[出版年份]:1987
[专业领域]:LUNAR AND PLANETARY EXPLORATION
[馆藏索取号]:A88-17777



版权声明:所有资料均为作者提供或网友推荐收集整理而来,仅供爱好者学习和研究使用,版权归原作者所有。
如本站内容有侵犯您的合法权益,请和我们取得联系,我们将立即改正或删除。
信息产业部备案号:京ICP备09025792号