Scientific and Technical Aerospace Reports PDF Download
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Author:
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Category : Aeronautics
Languages : en
Pages : 1038
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1038
Get Book Here
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 578
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Book Description
Author:
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ISBN:
Category : Science
Languages : en
Pages : 684
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Author: Yūji Inoue
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ISBN:
Category : Geomagnetism
Languages : en
Pages : 38
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Book Description
Wave cataloguing suitable for ray tracing of a pulsed wave packet in a weakly-dissipative, horizontallystratified magnetoionic medium is described, Particular attention is devoted to the cataloguing of the various characteristic waves so that the influence of the local ionization density and collision frequency can be understood. The procedure presented is applicable under general incident conditions and complex refractive index surfaces. The Booker quartic equation is used to derive the unambiguous wave normals and wave identification is obtained from the dispersion equation. A modified CMA. diagram including collisions is illustrated. (Author).
Author: Tapan K. Mukherjee
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ISBN:
Category : Anions
Languages : en
Pages : 16
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Author: John N. Pierce
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ISBN:
Category : Alphabets
Languages : en
Pages : 38
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Book Description
The performance of a plurality-count diversity combiner for fading M-ary transmissions is analyzed, and calculated error probabilities are presented graphically for alphabet sizes of 2, 8, and 32. The performance is shown to be within 3 dB of that of an optimum square-law combiner for moderate alphabet sizes when there is no restriction on the allowable number of diversity branches. It is shown that a worthwhile saving in transmitted power can be effected by using nonbinary alphabets with plurality-count combining for the transmission of binary data. The availability of extra information from the combiner for use with error-correction is discussed.
Author: Charles J. Drane (Jr.)
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ISBN:
Category : Antenna arrays
Languages : en
Pages : 30
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Author: Rocco H. Urbano
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ISBN:
Category : Iterative methods (Mathematics)
Languages : en
Pages : 12
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In a previous paper by this author, the problem of achieving arbitrary reliability for combinatorial nets from arbitrarily unreliable elements was reduced to the study of convergence properties of an associated polynomial system. In this paper simple criteria which specify the convergence of such a system to a nodal fixed point are obtained from known results in matrix theory. (Convergence to a nodal point implies that the corresponding net approaches reliability arbitrarily near 1 for a particular function.) Theorems are also given which show that it is possible to obtain from a single system converging to a nodal fixed point, many systems having this property.
Author: William Swider (Jr.)
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ISBN:
Category : Chemical reactions
Languages : en
Pages : 26
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Author: C. C. Leiby (Jr.)
Publisher:
ISBN:
Category : Electrophoresis
Languages : en
Pages : 42
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Book Description
Druyvesteyn's solutions for electrophoretically induced gas flows in electrical discharges in gases were extended over a larger pressure range and corrected for the influence of Debye shielding effects. The effects of molecular or 'slip' flow were also taken into account. These more accurate and general solutions were applied to the reverse phenomenon of space charge field generation arising from the flow of a thermally ionized cesium plasma through a tube. Under such flow conditions, a non-linear differential equation for the axial pressure distribution was obtained but not solved. However, it was possible to obtain estimates of the ranges of cesium pressure, temperature and tube radii which would be required for sensible levels of electric power generation. Anaphoretic flow power levels of the order of 0.1 to 10 watts, in tubes of laboratory dimensions (radii of 10 cm or less), appear feasible at temperatures from 1700 to 2400K. Sensible power generation levels at lower temperatures require very large diameter tubes, and therefore are not feasible. (Author).
