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Results for “Spheres”
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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Empirical correlation of small hollow sphere impact failure data using dimensional analysis
Empirical correlation of small hollow sphere impact failure data using dimensional analysis
Burning of solid aluminum and magnesium spheres in high-temperature and high-velocity gases
Burning solid aluminum and magnesium spheres in high temperature and high velocity gases by combustion of hydrogen and oxygen
The mass-radius relation for cold spheres of low mass
Mass and radius relations for zero temperature spheres of chemical elements, using equation of state and numerical integration
Microwave scattering by a plasma covered sphere
Forward angle microwave scattering by plasma covered magnetized metallic sphere, calculating radial electron density distribution
A Monte Carlo technique for determining sphere drag in near free molecular flow
First collision Monte Carlo method for calculating aerodynamic drag on hard sphere and Maxwell molecular models in near-free molecular flow
Rarefied gas flow over a sphere at low Mach numbers
Drag and heat transfer predicted by kinetic theory for rarefied gas flow over sphere at low Mach numbers, analyzing flow field
High-speed rarefied gas flow near a stagnation point with application to sphere drag
Hypersonic rarefied gas flow near stagnation point investigated to predict drag on sphere in high speed gas stream with densities in transition regime
Vibration of the hollow sphere in an acoustic medium
Radial vibrations of hollow elastic sphere in acoustic medium, considering Laplace transform of field equations with respect to time
The flow created by a sphere moving along the axis of a rotating, slightly-viscous fluid
Flow field around and drag on sphere rising axially through rotating viscous fluid
Simple collision theory of reactive hard spheres
Hard sphere model for reactive molecular collisions based on energy and momentum of reactants and products
Critical levitation locii for spheres on cryogenic fluids
Critical Levitation Loci for floating spheres on cryogenic fluids
Integrating sphere theory
Integrating sphere theory with wall mounted specular sample in reflectance and transmittance measurements
Inexpensive, large-diameter, radar tracking and calibration spheres
Plastic models of polystyrene beads are produced to within 0.02 cm accuracy, in various diameters designed to meet exact requirements of particular radar system frequency spectrum. They are inexpensive and do not require special handling imposed on metal spheres.
A passive method for scanning the celestial sphere
Spin axis scanning of celestial sphere for attitude control of spin stabilized spacecraft
The responses of balloon and falling sphere wind sensors in turbulent flows
Responses of balloon and falling sphere wind sensors in atmospheric turbulence, analyzed with Fourier transformation
Investigation of integrating sphere measurement parameters
Directional and bidirectional reflectance of MgO sphere wall coatings, and directional characteristics of photomultiplier tube
Reliability tests conducted on five /5/ cryo-formed spheres
Tests of cryo-formed spheres to determine suitability as replacements for titatium helium storage bottles in liquid hydrogen tanks of saturn S-4B stage