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Empirical Analysis Of Unaccelerated Velocity And Mass Distributions Of Photographic Meteors
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Book Synopsis Empirical Analysis of Unaccelerated Velocity and Mass Distributions of Photographic Meteors by : Cearcy D. Miller
Download or read book Empirical Analysis of Unaccelerated Velocity and Mass Distributions of Photographic Meteors written by Cearcy D. Miller and published by . This book was released on 1970 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: An empirical analysis was performed on data for 2000 sporadic meteors. A bimodal log-normal equation was found for unaccelerated velocity distribution, by empirical curve fitting to match observed velocity distributions for meteoroids within 10 ranges of mass with due regard to failure of observation of faint meteors. An exponent of -1.34 was confirmed in the equation for cumulative influx rate of meteoroids relative to mass. An exponent of -3.87 was established for meteoroid velocity relative to Earth's atmosphere as used in an earlier weighting factor for correction of biasing effects of velocity and mass. Earlier theoretical results were closely approximated.
Book Synopsis Empirical Analysis of Unaccelerated Velocity and Mass Distributions of Photographic Meteors by : C. D. Miller
Download or read book Empirical Analysis of Unaccelerated Velocity and Mass Distributions of Photographic Meteors written by C. D. Miller and published by . This book was released on 1970 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: An empirical analysis was performed on data for 2000 sporadic meteors. A bimodal log-normal equation was found for unaccelerated velocity distribution, by empirical curve fitting to match observed velocity distributions for meteoroids within 10 ranges of mass with due regard to failure of observation of faint meteors. An exponent of -1.34 was confirmed in the equation for cumulative influx rate of meteoroids relative to mass. An exponent of -3.87 was established for meteoroid velocity relative to Earth's atmosphere as used in an earlier weighting factor for correction of biasing effects of velocity and mass. Earlier theoretical results were closely approximated.
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 1970 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1970 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unaccelerated Geocentric Velocities and Influx Rates of Sporadic Photographic Meteors by : C. D. Miller
Download or read book Unaccelerated Geocentric Velocities and Influx Rates of Sporadic Photographic Meteors written by C. D. Miller and published by . This book was released on 1969 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Necessary Thickness of Randomly Oriented Armor for Meteoroid Protection by : C. D. Miller
Download or read book Necessary Thickness of Randomly Oriented Armor for Meteoroid Protection written by C. D. Miller and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of armor thickness necessary for meteoroid protection.
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1979 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Meteoroid Hazard Evaluation for Simple Structures with Various Orientations by : Cearoy D. Miller
Download or read book Meteoroid Hazard Evaluation for Simple Structures with Various Orientations written by Cearoy D. Miller and published by . This book was released on 1970 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: A statistical analysis was performed with use of Smithsonian Astrophysical Observatory's data on photographic meteors with use of weighting factors developed at Lewis Research Center for correction of various biases involved in meteor photography. The analysis used an armor damage criterion supplied by Ames Research Center. Although the analysis was restricted to Earth's orbit about Sun, implications are discussed regarding total population of meteoroids throughout the solar system. In Earth's orbit about the Sun, advantage was found for cylindrical armor extending in the solar direction and a plane sheet alined normal to apex of Earth movement.
Book Synopsis Manned Operations for the Apollo Lunar Module in a Simulated Space Environment by : O. L. Pearson
Download or read book Manned Operations for the Apollo Lunar Module in a Simulated Space Environment written by O. L. Pearson and published by . This book was released on 1970 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulated space environment performance tests of Apollo lunar module in thermal vacuum environment.
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1966 with total page 1464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1970 with total page 1730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simultaneous Correction of Velocity and Mass Bias in Photography of Meteors by : Cearcy D. Miller
Download or read book Simultaneous Correction of Velocity and Mass Bias in Photography of Meteors written by Cearcy D. Miller and published by . This book was released on 1968 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: In any statistical study of characteristics of meteors with data obtained from photographs, corrections must be made for two inherent biasing effects due to the brighter trails left by meteors of greater mass and/or by meteors of greater velocity relative to Earth's atmosphere. In the past, attempts have been made to correct for both biasing effects with a weighting factor inversely proportional to the square of the meteor velocity relative to atmosphere. A new analysis has been made to investigate the magnitude of the weighting factor, specifically for application to photographic meteor data published by Smithsonian Institution Astrophysical Observatory. As a result of this analysis, a revised factor was obtained to operate upon actual counts of photographic meteors within various classes of velocity to provide a correct ratio of counts for all velocities reduced to any given lower mass limit. In the analysis, an expression was derived theoretically for maximum effective exposure on the photographic plate produced by a meteor in terms of the original mass of the particle, its velocity relative to Earth's atmosphere, and the angle of its path to the zenith. The expression for maximum effective exposure was tested and revised by application to 100 test meteors that were believed to have provided approximately uniform effective exposure density. The revised expression for maximum effective exposure was combined with a widely accepted equation for the influx rate of meteors of mass greater than a stated value to obtain approximately the desired weighting factor. The manner of the combination eliminated mass of the meteor particle from the factor. The analysis indicated a large change in value of the exponent of velocity relative to Earth's atmosphere in the weighting factor, namely, from -2 downward at least to -3.85 and possibly as low as -4.22. Application of the new factor should cause a significant reduction of estimates of average meteor velocities relative to the atmosphere. Extensive changes would also be required in estimates of other parameters that might bear a systematic relation to meteor velocities.
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1970 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cumulative Title Index to United States Public Documents, 1789-1976 by : Daniel W. Lester
Download or read book Cumulative Title Index to United States Public Documents, 1789-1976 written by Daniel W. Lester and published by . This book was released on 1980 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Analysis of Photographic Meteor Data. Part II - Verniani's Luminous Efficiency and Supplemented Whipple Weighting by :
Download or read book Statistical Analysis of Photographic Meteor Data. Part II - Verniani's Luminous Efficiency and Supplemented Whipple Weighting written by and published by . This book was released on 1965 with total page 40 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 1970 with total page 1328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstracts of NASA-ASRDI Publications Relevant to Aerospace Safety Research by : G. Mandel
Download or read book Abstracts of NASA-ASRDI Publications Relevant to Aerospace Safety Research written by G. Mandel and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: