Equatorial electrojet - Seasonal variation of the reversal times
Morning and evening current reversals in equatorial electrojet, discussing seasonal variation data for refining models
Balsley, B. B.↗
SEARCH · Engineering Papers
Results for “Reversibility”
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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A reverse hydromagnetic shock in the solar wind
Reverse hydromagnetic shock in solar wind as discontinuity of plasma density, proton temperature and magnetic field density, using spacecraft data
Burlaga, L. F.↗
Reversible ring counter employing cascaded single SCR stages Patent
Reversible ring counter using cascaded single silicon controlled rectifier stages
Libby, J. N.↗
Reverse and Forward Slow Shocks in the Solar Wind
Reverse and forward slow shocks in solar wind from Pioneer 6 space probe
Burlaga, L. F.↗
Reversible motion drive system Patent
Drive system for parabolic tracking antenna with reversible motion and minimal backlash
Richter, H. L.↗
Performance characteristics of a single-engine fighter model fitted with an in-flight thrust reverser
wind tunnel performance characteristics of single-engine fighter model fitted with in-flight thrust reverser
Maiden, D. L.↗
A catheter inserted device for the creation of reversible aortic insufficiency
Catheter inserted wire basket device for creation of reversible aortic insufficiency in animal
Thompson, P.↗
An experimental study of very-low-frequency mode coupling and polarization reversal
Electron and proton whistlers polarization reversal and mode coupling, explaining magnetic latitude dependence
Gurnett, D. A.↗
Microscopic reversibility for rates of chemical reactions carried out with partial resolution of the product and reactant states
Chemical reaction rate microscopic reversibility, observing rotational vibrational and/or translational states dependence of products reactants
Kinsey, J. L.↗
Inert gases from Apollo 11 and Apollo 12 fines - Reversals in the trends of relative element abundances
Primordial Kr and Xe trapping as possible cause of element abundance trend reversal in Apollo 11 and 12 fines
Heymann, D.↗
On K-line central reversals
Solar atmosphere vertical temperature and density distribution measurements, using spatially averaged H and K resonance line profiles central reversals
Pasachoff, J. M.↗
Application of reverse osmosis to wash water recovery for manned space flights
Reverse osmosis application to wash water recovery in manned space mission life support systems, emphasizing membranes development
Kindley, L. M.↗
Stabilization of porous glass reverse-osmosis membranes
Application of porous glass in form of capillary tubes for low capacity ion exchange in hyperfiltration experiments is discussed. Efficiency of desalination by process of reverse osmosis is described. Stabilization of porous glass membrane by presence of aluminum chloride is analyzed.
Ballou, E. V.↗
Reverse-osmosis membranes by plasma polymerization
Thin allyl amine polymer films were developed using plasma polymerization. Resulting dry composite membranes effectively reject sodium chloride during reverse osmosis. Films are 98% sodium chloride rejective, and 46% urea rejective.
Hollahan, J. R.↗
Development of reverse biased p-n junction electron emission
A cold cathode emitter of hot electrons for use as a source of electrons in vacuum gauges and mass spectrometers was developed using standard Norton electroluminescent silicon carbide p-n diodes operated under reverse bias conditions. Continued development including variations in the geometry of these emitters was carried out such that emitters with an emission efficiency (emitted current/junction current) as high as 3 x 10-0.00001 were obtained. Pulse measurements of the diode characteristics were made and showed that higher efficiency can be attained under pulse conditions probably due to the resulting lower temperatures resulting from such operation.
Fowler, P.↗
Vacuum stability testing of Apollo 15 Scientific Instrument Module (SIM) non-metallic materials and reversion of silicone rubber in a motor switch
Vacuum stability screening tests were performed on the Apollo 15 Scientific Instrument Module (SIM) bay nonmetallic materials in accordance with the NASA document SP-R-0022. The testing was necessary to support the evaluation to determine the effect material outgassing contamination would have on the SIM bay optical lenses and sensing devices. The Apollo 15 SIM experiments were highly successful, therefore, it is assumed that contamination due to the outgassing of nonmetallic materials did not affect equipment operation. A related problem, the reversion of a silicone rubber grommet which affected an electrical motor switch operation is also reported.
Clancy, H. M.↗
Effects of an in-flight thrust reverser on the stability and control characteristics of a single-engine fighter airplane model
The changes in thrust minus drag performance as well as longitudinal and directional stability and control characteristics of a single-engine jet aircraft attributable to an in-flight thrust reverser of the blocker-deflector door type were investigated in a 16-foot transonic wind tunnel. The longitudinal and directional stability data are presented. Test conditions simulated landing approach conditions as well as high speed maneuvering such as may be required for combat or steep descent from high altitude.
Mercer, C. E.↗
Nonresonant charge-capture - Na/+/ + Li reversibly proceeding to Na + Li/+/.
The cross sections for the process Na(+) + Li reversibly proceeding to Na + Li(+) are calculated in the range from 100 eV to 12 keV using a perturbed stationary state formulation, and are found to agree with experiment to the extent of reproducing detailed structure. A simple interpretation is presented of the observed quasi-oscillatory structure.
Bottcher, C.↗