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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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Ear oximeter for monitoring blood oxygenation and pressure, pulse rate, and pressure pulse curve, using dc and ac amplifiers
Forming mold for polishing and machining curved solar magnesium reflector with reinforcing ribs
Numerical analysis of curved characteristics behind strong blast waves
Mathematical model for two-dimensional, long-wave propagation in curved acoustic ducts determining vibrational velocity distribution and variation and phase of motion at any point in system
Least square distance curve fitting method
Design, characteristics, and performance tests of short two dimensional curved wall diffusers using suction slots
Rigid body motion implicit representation in curved finite elements
Design curve for estimating conduction heat transfer liquid He cryostats with vapor-cooled vent tubes
Analytic approximations in closed form for curves of growth of Doppler-Lorentz broadened lines, considering radiative transport in nonisotropic gases
Molecular nitrogen ion potential energy curves based on valence bond method, calculating sextet and quartet states at intermediate internuclear separation distances
Hot water vapor curve of growth, using statistical band model with exponential line intensity distribution yielding spectral absorption coefficients
Fine structure of reddening interstellar extinction curves of stellar radiation, using photographic spectrophotometry
Test particle uniform acceleration motion in curved space-time, requiring torsion free and constant curvature particle world line
Electro-pneumatic transducer for conversion of electrical into fluidic signals, using temperature dependence of laminar gas jet deflection angle in flow along heated curved wall
Development of equipment for storage of liquid helium is discussed. Derivation of design curve and working equations for estimating effects of either perfect or imperfect heat transfer in storage device are described. Mathematical models of heat transfer conditions are provided.
Vacuum apparatus for holding photographic film of various widths against cylindrically curved patens is discussed. Construction details and method of operation are explained. Illustration of equipment is provided.
The curve of growth method has been employed to determine f-values for the fourth positive system of CO and the magnetic dipole and electric quadrupole components of the Lyman-Birge-Hopfield system of N2. No significant dependence on r-centroid was found. The mean value of the ratio of the electric quadrupole to magnetic dipole f-values was 0.076.
The classical treatment of circular, hydrostatic, orifice-regulated thrust gas bearings, in which perfectly plane bearing plates are assumed, is extended to include axisymmetric, but otherwise arbitrary, plate profiles. Plate curvature has a strong influence on bearing load capability, static stiffness, tilting stiffness, and side force per unit misalignment angle. By a suitable combination of gas inlet impedance and concave plate profile, the static stiffness can be made almost constant over a wide load range, and to remain positive at the closure load. Extensive measurements performed with convex and concave plates agree with theory to within the experimental error throughout and demonstrate the practical feasibility of using curved plates.