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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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Interchange stability of Van Allen belt - Effect of resonant magnetic moment violation on trapped particles - Exact solution of universal instability
Seal concepts evaluation for compressor end seals, stator interchange seals, and stator pivot seals in air breathing propulsion system
Ionospheric reaction rates for oxygen nitrogen ion-atom interchange
Finite beta effects on interchange mode in weakly unstable plasma calculated in finite Larmor radius limit - differential equation to obtain stability properties of arbitrary systems
On May 7, 1964, at the invitation of Dr. Raymond L. Bisplinghoff, Associate Administrator for Advanced Research and Technology, a conference was held in NASA Headquarters, on the subject "Heat Transfer Computer Programs." The conference was one of several held in Headquarters during the first half of 1964 for review and planning of NASA's research program on space vehicle thermal radiation and temperature control. The conference brought about a useful interchange of information between the NASA Centers, including JPL, on computer programs which had been developed for the thermal design of spacecraft. The conferees concluded that in addition to our annual conference in this area, a useful continuing exchange of information could be through the establishment of a quarterly newsletter issued from Headquarters describing, current efforts. Such a newsletter, on heat transfer. computer programs, has been established and it is hope that the publication of the present proceedings will be a further milestone in advancing the technology of using electronic computers as a tool in the thermal design of space vehicles. The present volume includes all of the formal presentations made by staff members of the various NASA Centers. Their cooperation, which led to a highly successful conference, is greatly appreciated.
A two-phased contract is currently underway to develop 1) a set of parametric curves of absorbed heat flux for specific geometries, and 2) a generalized computer program whose output is absorbed heat flux on the surfaces of a planet orbiting spacecraft. The absorbed heat fluxes include the effects of blockage by and reflections from adjacent spacecraft surfaces, assuming all surfaces to be diffuse. The final computer program will calculate fluxes on any of ten arbitrarily positioned plane surfaces, with any surface properties, planetary radiation characteristics, solar intensity, and orbital parameters. Outputs will be heat fluxes versus time, geometrical configuration factors, and radiant flux interchange factors.
To provide a better opportunity, therefore, for the aerospace mechanisms designer to compare and correlate the specific knowledge gained from a wide variety of important mechanism design efforts, the First Aerospace Mechanisms Symposium was held on 19-20 May 1966. This Symposium, dealing exclusively with aerospace mechanism design and development, was sponsored by the Jet Propulsion Laboratory of the California Institute of Technology, Lockheed Missiles & Space Company, and the University of Santa Clara. The first aerospace symposium with such broad sponsorship, is supplied the first forum for an extensive discussion in depth of ideas, problems, and accomplishments regarding aerospace mechanisms. It stressed the practical aspects, with emphasis on actual flight test data and correlation with analytical predictions. This volume presents the papers offered at the Symposium in order to provide the aerospace mechanisms designer with a useful source of ideas and information and to serve as a stimulant to the continuance of a periodic professional interchange in the field of aerospace mechanisms.
Low energy atomic collisions, considering Schroedinger equation for proton interchange
Absolute pressure calibration system using a Michelson interferometer calibrates phase characteristics and pressure sensitivities of the transducers that monitor acoustic or aerodynamic pressure fields. The interferometer uses a helium-neon laser light source and interchangeable acoustic signal generators to produce acoustic waves.
Portable instrument relieves hematomas beneath fingernails and toenails without surgery. This device simplifies the operative procedure with an instant variable heating tip, adjustable depth settings and interchangeable tip sizes for cauterizing small areas and relieving pressurized clots.
Geomagnetic data reduction program, and World Data Center information interchange
Effects of two interchangeable probe antennas on aerodynamic characteristics of Apollo reentry vehicle model at Mach number 10.03
Interchange of field lines between closed region of magnetosphere and open tail, explaining features of auroral breakup and geomagnetic bays
Finite plasma pressure effect on interchange mode in finite Larmor radius weakly unstable regime
Relation between Slater screening constants and interchangeability of atomic orbitals
Theoretical description of the reaction rate of an ion-molecule interchange reaction as a function of collision parameters
Thermodynamics of adiabatic expansion of mixture of two phases capable of interchanging heat and matter across phase boundary
Scientific data acquisition and interpretation effects on electric spacecraft plasmas and field directions, noting electron interchange reactions effect