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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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A system of modular chassis structures has simplified the design for mounting a number of printed circuit boards. This design is structurally adaptable to computer and industrial control system applications.
Mars orbiter/landing capsule mission launched by Saturn IB/SV vehicle - conceptual design
Sterilization of spacecraft telecommunications system - pressure transducers, magnetic tape recorders, and magnetic core memories
Observations of trapped electrons at low and high altitudes by 1963 38C satellite and Explorer 26 satellite
High energy trapped electrons at high and low altitudes, noting energy dependence for attaining equilibrium after magnetic storm
Effects of auroral electrojet on magnetospheric electron disturbances
Acceleration of protons by interplanetary shocks
Interplanetary energetic particle diffusion coefficient determination using random walk from shock waves
Relation of plasmapause position to region of enhanced fluxes of trapped energetic electrons during magnetic storm on 15 June 1965
Satellite observations of trapped electrons at low and high altitudes for 6 month period in 1965
Short duration proton energy increases observation by Explorer 34, considering interpretation as acceleration associated interplanetary shocks
Plasmapause position during stormtime increase in trapped energetic electrons, measuring near prime geomagnetic meridian by whistler techniques
Review of some of the problems encountered in the development of an improved Cerenkov counter for high energy cosmic ray experiments, and discussion of the approaches used or contemplated for the solution of these problems. The solution is felt to be contingent upon a better UV-reflecting paint and an improved radiator and photomultiplier positioning.
The use of polyvinyl alcohol as a binder for barium sulphate does not allow the intrinsically high reflectance of this material in the near vacuum ultraviolet to be optimally employed. In an effort to better utilize this property, completely inorganic coatings systems are described, where from the intrinsically high reflectance of barium sulphate in this spectral region can be gotten. Potassium sulphate turns out to be the preferred binder. Compositions, formulating procedures, and application techniques are included. For completeness, absolute and relative reflectance data are included for intra- and intersystem comparisons.
A summary is presented of optical measurements performed on a variety of cesium iodide samples to characterize quantitatively the optical quality of the materials, and to define and measure parameters which determine its suitability as a detector material for high energy cosmic ray experiments on HEAO-A. The general case of light transmission through a long rectangular slab under multiple internal reflections is discussed along with transmission and scattering as a function of wavelength at normal incidence. Scattering parameters are tabulated for encapsulated single crystal CsI and polyscin.
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A review of typical surveillance and monitoring practices followed during the flight phases of representative solid-propellant upper stages and apogee motors was conducted to evaluate the need for improved flight diagnostic instrumentation on future spacecraft. The capabilities of the flight instrumentation package were limited to the detection of whether or not the solid motor was the cause of failure and to the identification of probable primary failure modes. Conceptual designs of self-contained flight instrumentation packages capable of meeting these reqirements were generated and their performance, typical cost, and unit characteristics determined. Comparisons of a continuous real time and a thresholded hybrid design were made on the basis of performance, mass, power, cost, and expected life. The results of this analysis substantiated the feasibility of a self-contained independent flight instrumentation module as well as the existence of performance margins by which to exploit growth option applications.
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