Identification of sampling intervals in sampled-data models of human operators.
Programmed search and gradient search methods for determination of sampling intervals in synthesis of sampled data models of human operators
Bekey, G. A.↗
SEARCH · Engineering Papers
Results for “Neal”
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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Space storable regenerative cooling investigation.
Space storable regenerative cooling with FLOX/methane under conditions for small pump fed engine, describing injector and chamber design
Mitchell, J. P.↗
Satellite imagery of the earth.
Satellite IR hyperaltitude imagery for earth resources application, obtaining geological, meteorological and hydrological information
Cronin, J.↗
Estimation of the parameters of sampled-data systems by means of stochastic approximation.
Stochastic approximation applied to sampled data system parameters including sampling interval
Bekey, G. A.↗
LM descent/ascent summary document Mission G preliminary
Summary of descent-ascent crew procedures for command service module-lunar module undocking and touchdown phase
Lewis, C. O.↗
Mission F, LM descent/phasing summary document
Lunar module descent/phasing summary for mission F
Lewis, C. O.↗
Considerations of electron beam propagation from space vehicles
Theoretical analysis of electron beam array propagation from spacecraft
Beggs, W. C.↗
Emergency escape system Patent
Automatic braking device for rapidly transferring humans or materials from elevated location
Billings, C. R.↗
Structural Dynamics of the Heliogyro
Structural dynamics of heliogyro solar sail device
Mac Neal, R. H.↗
A design study for the incorporation of aeroelastic capability into NASTRAN
Modifications and computational tasks required for aeroelastic capability in NASTRAN
Harder, R. L.↗
Identification of human operator models by stochastic approximation
Human operator models parameter estimation by stochastic approximation, considering continuous and sampled data models
Bekey, G. A.↗
Improved high-temperature gimbal joint
Development and characteristics of bellows gimbal joint for reduction of thermal stress effects are discussed. Reactions of designed joint to changes in temperature are described. Illustrations of conventional gimbal joint and improved gimbal joint are provided.
Winemiller, J. R.↗
A concept for universal pliers
By modification in existing design, pliers can be made to have one pair of handles that will accept number of different jaws. Concept is useful for light to medium duty service. Complete set of jaws may be made to suit specific hobbies or applications.
Neal, E. T.↗
Study of a heat rejection system using capillary pumping
Results of an analytical study investigating the application of capillary pumping to the heat rejection loop of an advanced Rankine cycle power conversion system are presented. The feasibility of the concept of capillary pumping as an alternate to electromagnetic pumping is analytically demonstrated. Capillary pumping is shown to provide a potential for weight and electrical power saving and reliability through the use of redundant systems. A screen wick pump design with arterial feed lines was analytically developed. Advantages of this design are high thermodynamic and hydrodynamic efficiency, which provide a lightweight easily packaged system. Operational problems were identified which must be solved for successful application of capillary pumping. The most important are the development of start up and shutdown procedures, and development of a means of keeping noncondensibles from the system and of earth-bound testing procedures.
Neal, L. G.↗
4-ferrocenyl-1,3-pentadiene.
A convenient route is reported to a synthesis of 4-ferrocenyl-1,3-pentadiene which makes use of the well known Wittig (1954) reaction. The starting materials, acetylferrocene and allyltriphenylphosphonium bromide, are readily available, and the experimental conditions have been optimized so as to allow the synthesis to be carried out on a molar scale without the occurrence of extensive polymerization.
Lewis, D. H.↗
An exploratory investigation at a Mach number of 6.9 into the use of aerodynamic controls for modulating the lift-drag ratio of an Apollo type configuration
Explore the source record for details and available documents.
Luther Neal Jr.↗
Gated high speed optical detector
The design, fabrication, and test of two gated, high speed optical detectors for use in high speed digital laser communication links are discussed. The optical detectors used a dynamic crossed field photomultiplier and electronics including dc bias and RF drive circuits, automatic remote synchronization circuits, automatic gain control circuits, and threshold detection circuits. The equipment is used to detect binary encoded signals from a mode locked neodynium laser.
Green, S. I.↗
V/STOL tilt rotor study. Volume 6: Hover, low speed and conversion tests of a tilt rotor aeroelastic model (Model 300)
Stability and control tests of a scale model of a tilt rotor research aircraft were conducted. The characteristics of the model for hover, low speed, and conversion flight were analyzed. Hover tests were conducted in a rotor whirl cage. Helicopter and conversion tests were conducted in a low speed wind tunnel. Data obtained from the tests are presented as tables and graphs. Diagrams and illustrations of the test equipment are provided.
Marr, R. L.↗