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Ionospheric Effects Of Rocket Exhaust Products Heao C Skylab And Sps Hlllv
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Book Synopsis Ionospheric Effects of Rocket Exhaust Products (HEAO-C, Skylab and SPS-HLLLV). by : Los Alamos Scientific Laboratory
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:
Book Synopsis Ionospheric Effects of Rocket Exhaust Products (HEAO-C, Skylab and SPS-HLLV) by :
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:
Book Synopsis Ionospheric Effects of Rocket Exhaust Products by :
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.
Book Synopsis Effects of Rocket Exhaust Products in the Thermosphere and Ionosphere by :
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:
Book Synopsis Effects of Rocket Exhaust Products in the Thermosphere and Ionsphere by :
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.
Book Synopsis Ionospheric Modification by Rocket Effluents. Final Report by :
Download or read book Ionospheric Modification by Rocket Effluents. Final Report written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes experimental and theoretical studies related to ionospheric disturbances produced by rocket exhaust vapors. The purpose of our research was to estimate the ionospheric effects of the rocket launches which will be required to place the Satellite Power System (SPS) in operation. During the past year, we have developed computational tools for numerical simulation of ionospheric changes produced by the injection of rocket exhaust vapors. The theoretical work has dealt with (1) the limitations imposed by condensation phenomena in rocket exhaust; (2) complete modeling of the ionospheric depletion process including neutral gas dynamics, plasma physics, chemistry and thermal processes; and (3) the influence of the modified ionosphere on radio wave propagation. We are also reporting on electron content measurements made during the launch of HEAO-C on Sept. 20, 1979. We conclude by suggesting future experiments and areas for future research.
Book Synopsis Search of Archived Data Sources for Rocket Exhaust-induced Modifications of the Ionosphere by :
Download or read book Search of Archived Data Sources for Rocket Exhaust-induced Modifications of the Ionosphere written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The emergence of the Satellite Power System (SPS) concept as a way of augmenting the dwindling energy sources available for commercial power usage involved such a large and unprecendented technological program that detailed assessment and feasibility studies were undertaken in an attempt to specify the true impact such a program would have. As part of the issues addressed, a comprehensive environmental impact study was initiated that involved an unprecedented scope of concerns ranging from ground-level noise and weather modifications to possible planetary-scale perturbations caused by SPS activity in distant Earth orbits. This report describes results of a study of an intermediate region of the Earth's environment (the ionosphere) where large-scale perturbations are caused by routine rocket activity. The SPS program calls for vast transportation demands into and out from the ionosphere (h approx. = 200 to 1000 km), and thus the well-known effect of chemical depletions of the ionosphere (so-called ionospheric holes) caused by rocket exhaust signaled a concern over the possible large-scale and long-term consequences of the induced effects.
