Water injection from 9 deg hemisphere-cone into a hypersonic airstream
Water injection from nozzles of RAM C spacecraft models in hypersonic wind tunnels to study ion sheath penetration characteristics of spray
Hinson, W. F.↗
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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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Electrostatic plasma modulator for space vehicle re-entry communication Patent
Electrostatic modulator for communicating through plasma sheath formed around spacecraft during reentry
Seaton, S. L.↗
Analytical and experimental studies of MHD generator cathodes emitting in ''spot'' mode
MHD generator cathode current-sheath voltage characteristics for thermionic arc spot emission mode, noting role of cathode temperature
Mantenieks, M. A.↗
The ionosphere and its interaction with satellites
Monograph on ionosphere-satellite interactions, discussing ionosphere layers, plasma sheaths and wakes, electromagnetic wave propagation, spacecraft antennas, etc
Kasha, M. A.↗
An analysis of Alouette I plasma resonance observations
Alouette 1 plasma resonance observations, analyzing electron density measurements in sheath region and cyclotron harmonic resonant frequencies
Benson, R. F.↗
Antenna admittance in an ionospheric-type plasma
Cylindrical antenna admittance during immersion in ionospheric plasma, noting influence of ion sheath and plasma anisotropy
Miller, E. K.↗
Potential distribution surrounding a photo- emitting plate in a dilute plasma
Steady state potential distributions near photoemitting plate immersed in plasma, noting over-shoot effects role for sheaths around satellites in interplanetary plasma
Fu, J. H. M.↗
Quasi-ambipolar diffusion in arc discharges in a magnetic field
Quasi-ambipolar diffusion in arc discharges in magnetic field, calculating ions and electrons density distributions between anode and cathode sheaths
Hassan, H. A.↗
Apparatus for measuring electric field strength on the surface of a model vehicle Patent
Space environment simulation system for measuring spacecraft electric field strength in plasma sheath
Hall, D. F.↗
Analysis of VHF and X-band telemetry systems degradation by reentry environment
VHF and X band telemetry attenuation by plasma sheath around hypersonic reentry vehicles
Golden, K. E.↗
Radiation from circumferential slots on plasma-clad cones
Slot antenna radiation pattern distortion produced by boundary layer plasma sheath around conical reentry vehicles
Golden, K. E.↗
Aerophysical plasma alleviation
Reentry plasma sheath alleviation by injecting sulfur hexafluoride or hydrazine into boundary layer
Parmentier, E. M.↗
The removal of free electrons in a thermal plasma by means of rapidly evaporating liqiud additives
Improved microwave transmission by adding rapidly evaporating liquid droplets to plasma sheath to remove free electrons
Aisenberg, S.↗
Measured drift of irradiated and unirradiated W3 percent Re/W25 percent Re thermocouples at a nominal 2000 K
Neutron irradiated and unirradiated Ta sheathed BeO insulated grounded junction thermocouples drift measurement
Heckelman, J. D.↗
Sensor capsule for diagnosis of gastric disorders
Motility and pH sensor capsule is developed to monitor gastric acidity, pressure, and temperature. Capsule does not interfere with digestion. Sensor is capsule which includes pH electrode, Pitran pressure transducer, and thermistor temperature sensor all potted in epoxy and enclosed in high density polyethylene sheath.
Holen, J. T.↗
Computation of laminar heat transfer from gaseous plasmas in electromagnetic fields
Heat transfer analysis procedure is presented for two-temperature gaseous plasma. Analysis is based on laminar flow of singly-ionized, quasineutral plasma with variable properties. Sheath analysis is described for species in accelerating field, decelerating field, emitted from wall, and recombining at wall.
Bose, T. K.↗
Implantable drug therapy device: A concept
Design is described of small, rechargeable, implantable infusor which contains fluid medicament stored under pressure and which dispenses fluid continuously through catheter. Body of infusor is covered by pliable silicone rubber sheath attached to suture pad for securing device.
Feldstein, C.↗
Interaction of the solar wind with a planetary ionosphere
An electrodynamic model for an ionosphere-solar wind interaction is developed based on the existence of a low beta plasma below the anemopause. The currents for the interaction are driven by the solar wind motional electric field and induce a stagnation magnetic field at the anemopause. For Venus and Mars the lower region of the ionosphere near the electron density peak has the highest conductivity, and therefore the tangential component of the induction current flows substantially in this region. The current paths close in the anemopause, which is a solar wind current sheath analogous to the magnetopause. Both the fraction of the undisturbed solar wind motional electric field, which drives the induction current, and the required fraction of incident solar wind particles, crossing the anemopause to produce this current, are shown to be small.
Blank, J. L.↗