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Study Of The Ablative Effects On Tektites
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Book Synopsis Study of the Ablative Effects on Tektites by : Paavo Sepri
Download or read book Study of the Ablative Effects on Tektites written by Paavo Sepri and published by . This book was released on 1976 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equations are presented which provide approximate parameters describing surface heating and tektite deceleration during atmosphere passage. Numerical estimates of these parameters using typical initial and ambient conditions support the conclusion that the commonly assumed trajectories would not have produced some of the observed surface markings. It is suggested that tektites did not enter the atmosphere singly but rather in a swarm dense enough to afford wake shielding according to a shock envelope model which is proposed. A further aerodynamic mechanism is described which is compatible with hemispherical pits occurring on tektite surfaces.
Book Synopsis Study of the Ablative Effects on Tektite by : Karl K. Chen
Download or read book Study of the Ablative Effects on Tektite written by Karl K. Chen and published by . This book was released on 1975 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tumbling and surface roughness effects on the trajectory of entry tektite are studied in both free molecular and continuum flows. It was concluded that, while surface roughness has negligible effect on trajectory, the tumbling may play an important role in tektite trajectory and the consequent ablation, provided the body shape is different from a sphere. A shape factor was a good parameter for correlations between body shape and tumbling effects.
Book Synopsis The Lunar Origin of Tektites by : Dean R. Chapman
Download or read book The Lunar Origin of Tektites written by Dean R. Chapman and published by . This book was released on 1963 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1978 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introductory Guide to EC Competition Law and Practice by : Valentine Korah
Download or read book An Introductory Guide to EC Competition Law and Practice written by Valentine Korah and published by . This book was released on 1994 with total page 2354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tektite Ablation Study by : Karl K. Chen
Download or read book Tektite Ablation Study written by Karl K. Chen and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flow field around a typical tektite during entry has been analyzed in the fields of boundary layer transition, heating and ablation. The effects of surface roughness have been studied in particular.
Book Synopsis Aerodynamic Evidence Pertaining to the Entry of Tektites Into the Earth's Atmosphere by : Dean R. Chapman
Download or read book Aerodynamic Evidence Pertaining to the Entry of Tektites Into the Earth's Atmosphere written by Dean R. Chapman and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1978-08 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Effects Resulting from Tektite Ablation by : J. O. Golden
Download or read book Surface Effects Resulting from Tektite Ablation written by J. O. Golden and published by . This book was released on 1968 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamic Analysis of Tektites and Their Parent Bodies by : E. W. Adams
Download or read book Aerodynamic Analysis of Tektites and Their Parent Bodies written by E. W. Adams and published by . This book was released on 1962 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiment and analysis indicate that the button-type australites were derived from glassy spheres which entered or re-entered the atmosphere as cold solid bodies; in case of average-size specimens, the entry direction was nearly horizontal and the entry speed between 6.5 and 11.2 km/sec. Terrestrial origin of such spheres is impossible because of extremely high deceleration rates at low altitudes. The limited extension of the strewn fields rules out extraterrestrial origin of clusters of such spheres because of stability considerations for clusters in space. However, tektites may have been released as liquid droplets from glassy parent bodies ablating in the atmosphere of the earth. The australites then have skipped together with the parent body in order to re-enter as cold spheres. Terrestrial origin of a parent body would require an extremely violent natural event. Ablation analysis shows that fusion of opaque siliceous stone into glass by aerodynamic heating is impossible.
Book Synopsis Astronautical Research 1971 by : L.G. Napolitano
Download or read book Astronautical Research 1971 written by L.G. Napolitano and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Astronautical Federation is the only professional society in the field of aerospace engineering and Sciences which brings together specialists of all countries interested in the exploration and peaceful exploitation of space. At its annual Congresses a large number of invited and/or carefully selected con tributed papers are presented which cover a wide variety of topics and are distributed over a number of sessions, each one being organized by two leading scientists who later chair the session itself. Each year the selection of specific topics to be dealt with. is dictated either by significant new progress achieved in some sectors or by new developments and trends which are liable to influence substantially the objectives toward which space research and/or application of space technology will be oriented in the immediate future. A second rigorous screening, performed with the help of the Session Chairmen and carried out according to the same criteria identifies finally the papers which are published in the Proceedings. The outcome of all this is reliable and authoritative information as to the actual status and future trends of space activities, both from the research point of view and from the point of view of u~ilization and/or application.
Book Synopsis Research and Technology Program Digest Flash Index by :
Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research and Technology Program Digest by : United States. National Aeronautics and Space Administration
Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research Reports by :
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1962 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Air Force Cambridge Research Laboratories (U.S.). Space Physics Laboratory Publisher : ISBN 13 : Total Pages :244 pages Book Rating :4.F/5 ( download)
Book Synopsis Bibliography of Lunar and Planetary Research by : Air Force Cambridge Research Laboratories (U.S.). Space Physics Laboratory
Download or read book Bibliography of Lunar and Planetary Research written by Air Force Cambridge Research Laboratories (U.S.). Space Physics Laboratory and published by . This book was released on 1967 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Lunar and Planetary Research by : John W. Salisbury
Download or read book Bibliography of Lunar and Planetary Research written by John W. Salisbury and published by . This book was released on 1967 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: A bibliography of lunar and planetary research articles published during 1966 is presented with both subject and author listings. The major subject categories are: astrobiology, comets, meteorite craters and cratering effects, meteors and meteorites, the moon, origin of the solar system, the planets, and tektites. Each article is abstracted.
