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Download or read book Effects of Rocket Exhaust Products in the Thermosphere and Ionosphere written by and published by . This book was released on 197? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Rocket Exhaust Products in the Thermosphere and Ionsphere written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reviews the current state of understanding of the problem of ionospheric F-layer depletions produced by chemical effects of the exhaust gases from large rockets, with particular emphasis on the Heavy Lift Launch Vehicles (HLLV) proposed for use in the construction of solar power satellites. The currently planned HLLV flight profile calls for main second-stage propulsion confined to altitudes below 124 km, and a brief orbit circularization maneuver at apogee. The second stage engines deposit 9 x 1031 H2O and H2 molecules between 74 and 124 km. Model computations show that they diffuse gradually into the ionospheric F region, where they lead to weak but widespread and persistent depletions of ionization and continuous production of H atoms. The orbit circularization burn deposits 9 x 1029 exhaust molecules at about 480-km altitude. These react rapidly with the F2 region 0 ions, leading to a substantial (factor-of-three) reduction in plasma density, which extends over a 1000- by 2000-km region and persists for four to five hours. For purposes of computer model verification, a computation is included representing the Skylab I launch, for which observational data exist. The computations and data are compared, and the computer model is described.
Author : Los Alamos Scientific Laboratory
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (353 download)
Download or read book Ionospheric Effects of Rocket Exhaust Products (HEAO-C, Skylab and SPS-HLLLV). written by Los Alamos Scientific Laboratory and published by . This book was released on 1980 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (751 download)
Download or read book Ionospheric Effects of Rocket Exhaust Products (HEAO-C, Skylab and SPS-HLLV) written by and published by . This book was released on 1980 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 980 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionospheric Effects of Rocket Exhaust Products written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper is about ionospheric F-layer depletions produced by chemical reactions with exhaust gases from large rockets. It describes a 2-dimensional computer model of the ionosphere, and it compares model results with experimental data on the structure and variability of the natural ionosphere, as well as data on ionospheric holes produced by the launches of Skylab (May, 1973) and HEAO-C (September, 1979). It also describes measurements made in conjunction with the HEAO-C launch. The computer model includes an approximate representation of thermospheric tidal winds and E fields in addition to vertical motions associated with diurnal changes in temperature. The computed ionospheric structure is sensitive to all the above. For a small number of cases, results are compared of computations of the normal diurnal variations of ionospheric structure with incoherent scatter and total electron content data. Computations of ionospheric depletions from the Skylab and HEAO-C launches are in satisfactory agreement with the observations. The winds appear to be essential for interpretation of the Skylab results.
Author : Los Alamos National Laboratory
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.E/5 ( download)
Download or read book Publications of Los Alamos Research written by Los Alamos National Laboratory and published by . This book was released on 1983 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jules Aarons
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.3/5 (91 download)
Download or read book Ionospheric Radio Wave Propagation written by Jules Aarons and published by . This book was released on 1984 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.3/5 (555 download)
Download or read book Sounding Rocket Program written by and published by . This book was released on 1973 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.3/5 (555 download)
Download or read book Streamlining the Processing of Experimental Permit Applications written by and published by . This book was released on 2009 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Satellite Power System Project Office
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.F/5 ( download)
Download or read book Satellite Power System (SPS) FY 79 Program Summary written by United States. Satellite Power System Project Office and published by . This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Air Force Geophysics Laboratory
Publisher :
ISBN 13 :
Total Pages : 1066 pages
Book Rating : 4.:/5 (318 download)
Download or read book Handbook of Geophysics and Space Environments written by U.S. Air Force Geophysics Laboratory and published by . This book was released on 1985 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1744 pages
Book Rating : 4.U/5 (183 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1136 pages
Book Rating : 4.3/5 (91 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1980 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher : DIANE Publishing
ISBN 13 : 1428924574
Total Pages : 297 pages
Book Rating : 4.4/5 (289 download)
Download or read book Solar power satellites. written by and published by DIANE Publishing. This book was released on with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge surface to collect enough solar energy to be beamed on Earth by means of a microwave power transfer system. Different concepts appeared during last forty years and a lot of studies addressing the SPS economical feasibility have been published. In this work a particular concept is considered, the JAXA Reference Concept 2003. It is a formation flying SPS, composed by two reflectors and a central array panel. The objective of the work is to study two major problems this concept presents. Due to its dimensions, the satellite orbit will suffer from important orbital perturbations and since formation flying satellites need a tight orbit control, the first task is to derive an analytical approximation to perform relative perturbed orbit propagation for formation flying satellite. This objective is pursued starting from a H. Schaub’s formulation in which formation flying satellites unperturbed orbit is described by means of an approximated relation function of orbital element differences. This formulation is merged with another approach, developed in a previous work, which gives, analytically, orbital parameters variation when a perturbation acts on the spacecraft. The result is a very interesting algorithm, able to perform the assigned task with a relative error lower than 3% over one simulated orbit. The second objective concerns structural control. It is not possible to consider these huge satellites as rigid bodies, first natural frequencies will be certainly excited during operations. So that, the second task is the study of actuator placement optimization for flexible satellites, very useful for tight pointing requirements. A FEM model is developed modeling the SPS as a frame of beams and a global controllability index is obtained combining modal controllability and component cost analysis. The maximization of this parameter,
Author : International Radio Consultative Committee
Publisher :
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.:/5 (4 download)
Download or read book Assemblée Plénière written by International Radio Consultative Committee and published by . This book was released on 1990 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.0/5 ( download)
Download or read book A Collection of Technical Papers written by and published by . This book was released on 1983 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
