Investigating lack of accretion disc eccentricity growth in a global 3D MHD simulation of a superhump system
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Bryance Oyang↗
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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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Early science with the Large Millimetre Telescope: new mm-wave detections of circumstellar discs in IC 348 from LMT/AzTEC
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Michael S Petersen↗
Serendipitous discovery of a dusty disc around WDJ181417.84−735459.83
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E González Egea↗
rave : a non-parametric method for recovering the surface brightness and height profiles of edge-on debris discs
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Yinuo Han↗
Warp and flare of the old Galactic disc as traced by the red clump stars
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Namita Uppal↗
HELICOPTER DESIGN IMPROVEMENTS POSSIBLE WITH LOW DISC LOADING CONCEPT RETAINED
Helicopter design improvements possible with low disk loading concept retained
ROTOR DISK↗
Strength of rotating discs
Influence of stress distribution and shape on deformation and strength of rotating disks
ROTATING DISK↗
The Cosmic-Ray Electron Spectrum in a Disc-Halo Galactic Model
Cosmic-ray electron spectrum in disk-halo galactic model, studying inconsistencies in Ramaty and Lingenfelter analysis
ELECTRON SPECTRUM↗
Size analysis of latex emulsions using a centrifugal-disc photosedimentometer.
Centrifugal disk photosedimentometer used for size analysis of latex emulsions
LATEX↗
An actuator-disc model for azimuthally non-uniform MPD arcs.
Actuator disk model for study of azimuthally nonuniform MPD arc plasma dynamics
Cochran, R. A.↗
Frictional wear observations on ceramic in contact with a Ni-Co recording disc Final report
Wear life evaluation of plating for magnetic data storage disks
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The 1969 opposition effect of Mars - Full disc, Syrtis Major and Arabia
Photometric analysis of brightness surge on Mars surface
Jackel, L.↗
The Mach disc in underexpanded exhaust plumes
Mach disk in underexpanded exhaust plume predicted by dividing flow field into subregions
Abbett, M.↗
JPL P/N 71 x 12400 etched disc filter
The results are presented of a glass bead test conducted with a JPL P/N 71 x 12400 etched disk filter assembly to determine the largest diameter spherical glass bead that would transmit through the filter assembly. It was found that the largest glass bead transmitted was 16 microns in diameter.
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A compendium of static and cruise test results from a series of tests on 13 ft diameter low disc loading rotors
The results are presented of tests conducted on a series of 13 foot rotors with various blade twists during the time period from 1969 to 1972. The tests were accomplished at AFAPL Wright-Patterson Air Force Base, Ohio and the ONERA 8-meter tunnel at Modane, France. Both static and cruise performance data are presented.
Soule, V. H.↗
Gravitational radiation detection experiments with disc-shaped and cylindrical antennae and the lunar surface gravimeter
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Trimble, V.↗
The Mach disc in truncated plug nozzle flows
The first shock reflection within truncated plug nozzle propulsive jets is investigated experimentally using a free jet blow-down facility. The locations and sizes of these reflections in axisymmetric plug nozzles, with cylindrical shrouds and conical truncated plugs, are presented. Data are presented for a range of ambient to nozzle total pressure ratios. The effects of Mach disk location and size resulting from changing plug length and from varying amounts of base bleed are documented.
Giel, T. V., Jr.↗
Shape optimization of disc-type flywheels
Techniques were developed for presenting an analytical and graphical means for selecting an optimum flywheel system design, based on system requirements, geometric constraints, and weight limitations. The techniques for creating an analytical solution are formulated from energy and structural principals. The resulting flywheel design relates stress and strain pattern distribution, operating speeds, geometry, and specific energy levels. The design techniques incorporate the lowest stressed flywheel for any particular application and achieve the highest specific energy per unit flywheel weight possible. Stress and strain contour mapping and sectional profile plotting reflect the results of the structural behavior manifested under rotating conditions. This approach toward flywheel design is applicable to any metal flywheel, and permits the selection of the flywheel design to be based solely on the criteria of the system requirements that must be met, those that must be optimized, and those system parameters that may be permitted to vary.
Nizza, R. S.↗