Experimental investigation of a mach 5 isentropic spike inlet at and below design speed
Zero angle of attack performance of isentropic spike inlet designed for maximum external compression at hypersonic speed
HYPERSONIC SPEED↗
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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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Dynamic response of a supersonic diffuser to bypass and spike oscillation
Investigation of amplitude and phase shift of static pressure variations in supersonic diffuser for separate oscillation of spike and bypass
PHASE SHIFT↗
A comparison of the flow fields about the s-ii stage of the saturn v vehicle and spiked hemisphere configurations with emphasis on the s-ii thrust cone heating rates
Flow field comparisons of Saturn S- II stage and spiked hemisphere configuration with emphasis on rocket nozzle heat transfer rate
HEAT TRANSFER↗
Spike discharge patterns of spontaneous and continuously stimulated activity in the cochlear nucleus of anesthetized cats.
Spike discharge patterns of spontaneous and continuously stimulated activity in cochlear nucleus of anesthetized cats
NEUROPHYSIOLOGY↗
Investigation of the Air-flow-regulation Characteristics of a Translating-spike Inlet with Two Oblique Shocks from Mach 1.6 to 2.0
Translating spike inlet air flow regulation characteristics from transonic to supersonic speeds at zero angle of attack
AIR INLET↗
Summary of literature survey of hypergolic ignition spike phenomena, phase I Final report, Apr. 8 - Dec. 31, 1965
Summary of industry survey and literature search of ignition spike phenomena in low thrust, hypergolic, liquid bipropellant rocket engines
HYPERGOLIC PROPELLANT↗
Relationships of neuronal spike populations and EEG activity in chronic cats.
Neuronal spike populations and EEG activity in chronic unrestrained cats, noting multiple unit responses of acceleration/inhibition during behavioral conditioning procedures
CAT↗
Surface-spike growth on NiBr sub 2 crystals - A VLS mode of crystal growth.
Droplets associated with surface-spike growth of crystals of NiBr 2 by sublimation have been analyzed and found to contain Cu, Co, Mn, and Fe in addition to Ni and Br. These elements exist in the bulk of the original charge material in concentrations that are several orders of magnitude lower than that in the droplets. During crystal growth by sublimation the impurities collect on the surface of growing crystals, until sufficient concentrations are reached to cause the nucleation of a metastable liquid phase droplet. Once the liquid phase droplets have been nucleated, they may then become attached to growth steps and produce accelerated growth from these sites. Such processes occur in NiBr 2 , during growth by sublimation, at approximately 500 °C below the melting point of NiBr 2 .
Edward N Sickafus↗
Conditional probability analyses of the spike activity of single neurons.
Neuronal spike stimulus related and refractory effects separated by conditional probability analyses, with examples from auditory nerve fibers electrophysiological data
Gray, P. R.↗
Hydromagnetic disturbances of 3- to 15-minute period on the magnetopause and their relation to bow shock spikes.
Hydromagnetic disturbances on magnetopause from IMP 2 satellite data noting relation to energetic electron bow shock spikes
Anderson, K. A.↗
Aerodynamic investigation of sharp cone- cylinder spikes on 120 degree blunted cones at Mach numbers of 3.00, 4.50, and 6.00
Aerodynamic investigation of sharp cone-cylinder spikes on 120 degree blunted cones at Mach numbers of 3, 4.5, and 6
Mc Ghee, R. J.↗
High-latitude ionization spikes observed by the POGO ion chamber experiment.
High latitude ionization spikes observed by POGO spacecraft, noting frequency correlation with magnetic disturbances and development by high energy electron injections
Mccoy, J. E.↗
Lead isotopic analysis using a double spike.
Pb isotopic analysis using double spike mass spectrometric method to achieve reproducibility and accuracy, discussing principles and performance
Compston, W.↗
Flow-field investigation for large-angle cones with short spikes at a Mach number of 9.6
Flow distribution for large angle cones with short spikes in hypersonic laminar flow
Staylor, W. F.↗
Telescoping-spike supersonic inlet for aircraft engines Patent
Telescoping-spike supersonic nozzle for turbojet or ramjet engines
Connors, J. F.↗
Post-shock spikes: A new feature of proton and alpha enhancements associated with an interplanetary shock wave
Abrupt and prolonged enhancements in the intensities of 100 to approximately 2000 keV nucleon protons and alpha particles observed in interplanetary space are interpreted as particle populations confined between an interplanetary shock front and a magnetic field discontinuity. Prominent intensity spikes observed only below approximately 400 keV per charge for both protons and alpha particles several hours behind the shock front suggest that some fraction of the confined particles is accelerated by an energy per charge dependent process.
Gloeckler, G.↗
Structural evaluation of deployable aerodynamic spike booms
An extendable boom consisting of a series of telescopic cylindrical tube segments and overlapping lock joints developed for use as an aerodynamic spike mounted atop a missile is described. Two candidate design concepts differing mainly in the particular overlapping lock joint designs are undergoing a combined analytical/experimental evaluation. Some of the results of this evaluation are presented.
Richter, B. J.↗
Observations of a high-energy ion shock spike in interplanetary space
Observations are reported of a high-energy ion shock spike extending in energy to more than 25 MeV for protons, more than 4.3 MeV/nuc for alpha particles, and more than 1.6 MeV/nuc for medium nuclei with Z of at least 6. The measurements were obtained in the course of a solar-particle event on September 15, 1975, by the IMP-7 and IMP-8 spacecraft. It is shown that the observations can be reasonably accounted for by intensive acceleration of charged particles at an 'almost' perpendicular interplanetary shock wave. The data are inconsistent with a one-step d.c.-type acceleration process.
Sarris, E. T.↗