An assessment of ground and flight simulators for the examination of manned lunar landing.
Free flying lunar landing research vehicle tested for more than two years and used in lunar landing simulations supporting Apollo project
APOLLO PROJECT↗
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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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Stimulus-oriented approach to detection re- examined.
Signal duration effect on detection in presence of masking noise by human auditory system, using electric analogy for testing purposes
SIGNAL DETECTION↗
An analytical and experimental examination of the effect of cryogenic propellant venting on orbital vehicle dynamic behavior.
Analytical prediction of cryogenic propellant venting effects on orbital vehicle dynamic behavior, emphasizing vent thrusting and gas impingement
GAS FLOW↗
Metallographic and fractographic examination of 7079 aluminum alloy test specimens
Summary of metallographic and fractographic data from aluminum alloy test specimens
Boyer, R. R.↗
A critical examination of discrete lattice and dispersed barrier hardening
Critical assessment of discrete lattice and dispersed barrier hardening theories of thermally activated deformation of metals
Ono, K.↗
Examination of axial-flow turbine blade-loading characteristics using diffusion parameters.
Axial flow turbine blade loading using surface diffusion parameters, determining solidity
Glassman, A. J.↗
Examination of the thermal variation of the mean square atomic displacements in zinc and evaluation of the associated Debye temperature.
Mean square atomic displacements variation with temperature in Zn, evaluating Debye temperature
Katz, J. L.↗
Further examination of the hydrogen content in the upper atmosphere of Venus.
Molecular hydrogen concentration in Venus upper atmosphere by solving numerically heat conduction equation in conjunction with separate diffusion equation for each constituent
Mcgovern, W. E.↗
Aggregation of metallochlorophylls - Examination by spectroscopy
Nuclear magnetic resonance measurements determine which metallochlorophylls, besides magnesium-containing chlorophylls, possess coordination aggregation properties. Infrared spectroscopy reveals that only zinc pheophytin and zinc methyl pheophorbide showed significant coordination aggregation, whereas divalent nickel and copper did not.
Boucher, L. J.↗
Surface profilometer for examining grain-boundary grooves
Surface profilometer, consisting primarily of commercially available components, measures surface topographical features accurately and precisely. It shows improvement over the interferometric technique in measurement of grain-boundary grooves formed during annealing on nickel-oxide bicrystals.
Jech, R. E.↗
Examination of accelerated first order methods for aircraft flight path optimization
Accelerated first order methods for aircraft flight path optimization
Denham, W. F.↗
Examination of storm time outer zone electron intensity changes at 1100 kilometers
Effects of auroral electrojet on magnetospheric electron disturbances
Arens, J. F.↗
An examination of the space-time properties of hydroxyl emission
Spectrometric analysis on space-time properties of hydroxyl emission in various regions of sky
Taranova, O. G.↗
Nondestructive examination of surfaces with neutral atom probes Semiannual progress report
Surface property observation using scattered beams of metastable atoms and molecules
Donnelly, D. P.↗
Examining the RBE of protons and heavy ions on lysogenic bacteria
Relative biological effectiveness of protons and heavy ions on lysogenic bacteria
Grigoryev, Yu. G.↗
Metallographic examination of soldering of multilayer boards for airlock
Microstructure and void formation in solder connections of components on multilayer boards
Huffstutler, R. M.↗
Preliminary examination of lunar samples from Apollo 11.
Lunar rocks and fines samples physical, chemical, mineralogical and biological preliminary analysis at Lunar Receiving Laboratory
Source record↗
Electron fractography used to examine nickel-base alloys
Electron fractography establishes causes of metal fatigue and stress failures. Technique produces surface features at magnification as high as 9000X with excellent resolution. Method permits observation of features with dimensions of only 50 angstroms.
Jewett, R. P.↗