Scientific and Technical Aerospace Reports PDF Download
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 320
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 320
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
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Author: Marden H. Seavey
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ISBN:
Category : Acoustic paramagnetic resonance
Languages : en
Pages : 14
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Book Description
Author: Tapan K. Mukherjee
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ISBN:
Category : Anions
Languages : en
Pages : 16
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Book Description
Author: Thomas G. Evans
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ISBN:
Category : Computer programming
Languages : en
Pages : 16
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Book Description
A method for online assembly-language debugging which greatly simplifies several of the bookkeeping tasks characteristically associated with that process has been developed and implemented in a program for the UNIVAC M-460 computer at Air Force Cambridge Research Laboratories. With this program, an online user may insert or delete (in symbolic assembly language) any number of lines at any point in his previously assembled program in core, with the remainder of the program being relocated appropriately.
Author: Peter D. Gianino
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ISBN:
Category : Gallium compounds
Languages : en
Pages : 58
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Book Description
Measurements of the temperature dependency of firstand second-order anisotropy fields, as well as g-factors, have been made on single crystal iron garnets of yttrium, lutetium, gallium-yttrium, and indium-yttrium. Unit formulas are denoted by Y3Fe5O12, Lu3Fe5O12, YeFe(5-z) Ga(z)O12, and Y3Fe(5-z)InzO12, respectively. Results show that at any given temperature, first-order anisotropy fields within the yttrium iron garnet are enhanced by the substitution of gallium and diminished by the substitution of indium, and that for any given sample, these fields increase as temperature is lowered. Low temperature anisotropy fields for lutetium iron garnet, while completely at variance with those previously reported, are as expected. However, the anisotropy surface of lutetium iron garnet is highly convoluted at liquid helium temperatures. Also, there is evidence that anisotropy fields are independent of sample size effects. No experimental evidence of effects due to an external electrostatic field or of thermal hysteresis could be detected. Secondary peaks observed superimposed on the principal resonance absorption curve of some of the samples over many temperatures are noted. Derivations are given of the cubic system anisotropy energy and Kittel's 'effective demagnetization factors' in the (110) plane up to third order. (Author).
Author: Walton B. Bishop
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ISBN:
Category : Electric batteries
Languages : en
Pages : 18
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Book Description
A very simple analysis of circuit reliability when the source of energy of 'power supply' is included shows that small independent sources of energy are needed. Several possible ways of satisfying this intuitively obvious need are discussed. (Author).
Author: Yūji Inoue
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ISBN:
Category : Atmospheric models
Languages : en
Pages : 46
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Book Description
The propagation of electromagnetic waves in a horizontally stratified layer of gyrotropic medium is discussed. Derivation of a comprehensive representation for magneto-ionic coupling coefficients allows interpretation of the physical significance of the coupling. Introduction of an invariant quantity for an inhomogeneous medium becomes an important guide for numerical solutions of the wave equation. Numerical results of magneto-ionic coupling coefficients are presented. Based on region properties, characteristic wave types are defined: for the isotropic region, linearly polarized waves are used; for the anisotropic region, elliptically polarized waves generally are applied. (Author).
Author: F. V. Schultz
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ISBN:
Category : Boundary value problems
Languages : en
Pages : 14
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Book Description
In this work, rigorous electromagnetic theory is used to determine the nose-on radar cross section of a perfectly conducting cone of finite height. The end cap of the cone is assumed to be a segment of a s spherical surface with center at the apex of the cone. Numerical results have been obtained for a cone having a total apex angle of 30 degrees and for values of [kappa alpha] ranging from 0.0259 to 5.18, where [kappa]=2 [pi]/[lambda] and [alpha] is the radius of the base of the cone. Siegel's Rayleigh method and by using Keller's modified geometrical optics as well as with experimental results obtained by Keys. The comparisons are instructive below [kappa alpha] = 3.2, the apparent upper limit of validity of the present results -- p.[3].
Author: Richard Payne
Publisher:
ISBN:
Category : Anions
Languages : en
Pages : 28
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Book Description
A theory of hydromagnetic ionizing waves has been developed which is valid in the region in which gas pressure is negligible, compared with magnetic pressure. The theory takes into account the energy expended in partial ionization of the gas behind the wave. The usual high conductivity boundary condition behind the wave is not employed. The electric field in front of the wave is taken as a parameter. Results of this theory are compared with available experimental measurements, and show good agreement. (Author).
