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Author : J. O. Golden
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.F/5 ( download)
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:
Author : Karl K. Chen
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (13 download)
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.
Author : Karl K. Chen
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (13 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 318 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paavo Sepri
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (13 download)
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.
Author : John Aloysius O'Keefe
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (318 download)
Download or read book Tektites and Their Origin written by John Aloysius O'Keefe and published by Elsevier Science & Technology. This book was released on 1976 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Julian Allen
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect on Meteor Flight of Cooling by Radiation and Ablation written by H. Julian Allen and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. W. Adams
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)
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.
Author : Dean R. Chapman
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (31 download)
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA Technical Note written by and published by . This book was released on 1968 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dean R. Chapman
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)
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: Evidence is presented which shows that the Australian and Java tektites entered the earth's atmosphere and experienced ablation by severe aerodynamic heating in hypervelocity flight. The laboratory experiments on hypervelocity ablation have reproduced ring-wave flow ridges and coiled circumferential flanges like those found on certain of these tektites. Systematic striae distortions exhibited in a thin layer beneath the front surface of australites also are reproduced in the laboratory ablation experiments, and are shown to correspond to the calculated distortions for aerodynamic ablation of a glass. About 98 percent of Australian tektites represent aerodynamically stable configurations during the ablative portion of an entry trajectory. Certain meteorites exhibit surface features similar to those on tektites.
Author :
Publisher : Academic Press
ISBN 13 : 0080568394
Total Pages : 362 pages
Book Rating : 4.0/5 (85 download)
Download or read book Advances in Geophysics written by and published by Academic Press. This book was released on 1965-01-01 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Geophysics
Author :
Publisher :
ISBN 13 :
Total Pages : 544 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bibliography of Lunar and Planetay Research written by and published by . This book was released on 1960 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Air Force. Office of Scientific Research
Publisher :
ISBN 13 :
Total Pages : 1136 pages
Book Rating : 4.3/5 (243 download)
Download or read book AFOSR. written by United States. Air Force. Office of Scientific Research and published by . This book was released on 1957 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John W. Salisbury
Publisher :
ISBN 13 :
Total Pages : 532 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bibliography of Lunar and Planetary Research, 1960-1964 written by John W. Salisbury and published by . This book was released on 1966 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 510 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA Technical Report written by and published by . This book was released on 1964 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harvey Harlow Nininger
Publisher :
ISBN 13 :
Total Pages : 810 pages
Book Rating : 4.F/5 ( download)
Download or read book The Published Papers of Harvey Harlow Nininger: Biology and Meteoritics written by Harvey Harlow Nininger and published by . This book was released on 1971 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
