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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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Pulmonary capillary gas exchange and venous admixture model and inclusion into respiratory system model, discussing pressure and concentration gradients, pathological effects, etc
Kodaikanal iron meteorite measurements for cosmogenic rare gases and K-Ar isotopes ages for glass inclusions
Icarus asteroidal nature and fragmentation origin suggested from inclusion in angular momentum density-mass diagram
Elastic properties determined for reinforced composite material with hollow spherical inclusions embedded in matrix
Red giant model, investigating inclusion of semirelativistic partially degenerate gas characteristics by perturbationary technique
Stress concentrations due to cylindrical inclusions in homogeneous matrix, using stress function methods
Magnetospheric substorms model modification for growth phase inclusion prior to explosive expansion phase
Cool star atmospheric structure, discussing models with and without graphite particle inclusion opacity
Deuterium helium-3 fusion power balance calculations with inclusion of variable cyclotron radiation parameter
Acceptance tests of 100 ampere-hour nickel-cadmium cells for inclusion in life cycle program of secondary spacecraft cells
Horse Creek, Mount Egerton and Norton County enstatitic meteorites metal phases and perryite inclusions from electron microprobe data
Microfossil structures from morphological alterations of proteinoid microspheres due to inclusion of organismic or synthetic polyamino acids
Fluorine and other trace elements in lunar plagioclase concentrates from Apollo 11 fines, and anorthosite inclusion from Apollo 12 breccia
Inclusion in heat pipe of auxiliary working fluid which has considerably lower freezing point than main working fluid enables easy starting after main working fluid has been cooled to or below freezing point.
It is shown that the contribution of higher harmonics to the lunar transfer functions for the tangential components of the surface magnetic field is significant at frequencies greater than 0.01 Hz. The inclusion of the higher harmonics shows that there are two distinct transfer functions corresponding to the components of the tangential surface magnetic field perpendicular and parallel to the direction of the wave vector of the external disturbance forcing the lunar induction. The dependences of these transfer functions on frequency and location are determined. The effects of the higher harmonics can: (1) account for a hitherto unexplained feature in the Apollo 12-Explorer 35 transfer functions, namely the rolloff at high frequencies; and (2) offer a possible explanation for the frequency dependence of the difference between the transfer functions for the two orthogonal components of the surface magnetic field. The harmonic response of a simple current layer model of the moon is derived.
A time-independent, linear, plane and axially-symmetric stability analysis was performed on a self-gravitating, plane-parallel, isothermal layer of nonmagnetic, nonrotating gas. The gas layer was immersed in a plane-stratified field isothermal layer of stars which supply a self-consistent gravitational field. Only the gaseous component was perturbed. Expressions were derived for the perturbed gas potential and perturbed gas density that satisfied both the Poisson and hydrostatic equilibrium equations. The equation governing the size of the perturbations in the mid-plane was found to be analogous to the one-dimensional time-independent Schrodinger equation for a particle bound by a potential well, and with similar boundary conditions. The radius of the neutral state was computed numerically and compared with the Jeans' and Ledoux radius. The inclusion of a rigid stellar component increased the Ledoux radius, though only slightly. Isodensity contours of the neutrual or marginally unstable state were constructed.
The transmission electron microscope was used to investigate the nature of the matrix in two samples of lunar breccia. This matrix is composed largely of tiny (0.5 microns) grains of unaltered glass which are plastically fitted against one another, and tightly welded to the clastic fragments with which they are in contact. The breccias have an open framework of angular clastic particles composed mainly of anorthositic, basaltic and glassy fragments. Most of the anorthositic fragments have been shock metamorphosed. Over half of the glassy clasts, and also the former diaplectic glass particles produced from shocked plagioclase, were partly or wholly devitrified before inclusion in the present breccias. It is concluded that each breccia was deposited from a hot basesurge cloud of impact debris, and the tiny bits of glass in the matrix condensed from rock that was volatilized by the heat of major meteorite impact.
A compendium of techniques and basic information useful to the preliminary performance analysis of power-limited (low-acceleration, electric) propulsion systems applied to space missions is presented. The material is in handbook form and is reasonably complete within itself insofar as a basic understanding of the techniques and procedures is required for one to acquire facility in computing performance. This, in essence, is the objective of the handbook. The accumulation and organization of the material selected for inclusion was guided by the desire for simplicity and computational ease while maintaining a sufficient level of completeness for a general understanding.