WorldCat Identities

Lewis Research Center

Overview
Works: 7,646 works in 12,715 publications in 1 language and 303,873 library holdings
Roles: Researcher
Classifications: TL521.312, 333.92
Publication Timeline
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Most widely held works about Lewis Research Center
 
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Most widely held works by Lewis Research Center
Wind energy developments in the 20th century by Lewis Research Center( Book )

8 editions published between 1979 and 1981 in English and held by 286 WorldCat member libraries worldwide

Lewis Research Center : R & D facilities by Lewis Research Center( Book )

2 editions published in 1991 in English and held by 188 WorldCat member libraries worldwide

Study of deposition of YBa2Cu3O7-x on cubic zirconia by Joseph D Warner( Book )

2 editions published in 1989 in English and held by 170 WorldCat member libraries worldwide

Creep strength and niobium alloys, Nb-1%Zr and PWC-11 by Robert H Titran( Book )

2 editions published in 1989 in English and held by 170 WorldCat member libraries worldwide

An integrated methodology for optimizing structural composite damping by D. A Saravanos( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

The fuel cell in space yesterday, today and tomorrow by Marvin Warshay( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

STOVL propulsion system volume dynamics approximations by Colin K Drummond( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

Optical dispersion relations for "diamondlike" carbon films( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

Fundamental tribological properties of ion-beam-deposited boron nitride films by Kazuhisa Miyoshi( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

Aviation-fuel property effects on combustion by Thomas James Rosfjord( Book )

2 editions published in 1984 in English and held by 169 WorldCat member libraries worldwide

Application of a hybrid generation/utility assessment heuristic to a class of scheduling problems by Ann O Heyward( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

Quotient-difference type generalizations of the power method and their analysis by Avram Sidi( Book )

2 editions published in 1989 in English and held by 169 WorldCat member libraries worldwide

Channelized coplanar waveguide pin-diode switches by George E Ponchak( Book )

2 editions published in 1989 in English and held by 167 WorldCat member libraries worldwide

Stability of a rigid rotor supported on oil-film journal bearings under dynamic load by Bankim C Majumdar( Book )

4 editions published in 1987 in English and held by 141 WorldCat member libraries worldwide

Most published work relating to dynamically loaded journal bearings are directed to determining the minimum film thickness from the predicted journal trajectories. These do not give any information about the subsynchronous whirl stability of journal bearing systems since they do not consider the equations of motion. It is, however, necessary to know whether the bearing system operation is stable or not under such an operating condition. The purpose of the present paper is to analyze the stability characteristics of the system. A linearized perturbation theory about the equilibrium point can predict the threshold of stability; however it does not indicate postwhirl orbit detail. The linearized method may indicate that a bearing is unstable for a given operating condition whereas the nonlinear analysis may indicate that if forms a stable limit cycle. For this reason, a nonlinear transient analysis of a rigid rotor supported on oil journal bearings under (1) a unidirectional constant load, (2) a unidirectional periodic load, and (3) variable rotating load are performed. In this paper, the hydrodynamic forces are calculated after solving the time- dependent Reynolds equation by a finite difference method with a successive overrelaxation scheme. Using these forces, equations of motion are solved by the fourth-order Runge-Kutta method to predict the transient behavior of the rotor. With the aid of a high-speed digital computer and graphics, the journal trajectories are obtained for several different operating conditions. Keywords: Journal bearings; Stability; Dynamic loads; Bearings; Dynamics
Sensors for ceramic components in advanced propulsion systems summary of literature survey and concept analysis, task 3 report by W. H Bennethum( Book )

3 editions published in 1988 in English and held by 139 WorldCat member libraries worldwide

Stress rupture behavior of silicon carbide coated, low modulus carbon/carbon composites by Gary A Rozak( Book )

4 editions published in 1988 in English and held by 138 WorldCat member libraries worldwide

Advanced electric propulsion and space plasma contactor research annual report by Paul J Wilbur( Book )

4 editions published in 1987 in English and held by 137 WorldCat member libraries worldwide

"A series of experiments performed on an 8 cm dia. ring cusp magnetic field ion thruster are described. The results show the effects of anode and cathode position and size, ring cusp axial location and discharge chamber length on plasma ion energy cost and extracted ion fraction. Thruster performance is shown to be improved substantially when optimum values of these parameters are used. Investigations into the basic plasma phenomena associated with the process of plasma contacting are described. A theoretical model of discharge chamber operation developed for inert gas thrusters is extended so it can be used to evaluate the performance of mercury ion thrusters. Predictions of the model are compared to experimental results obtained on two 30 cm dia. thrusters. ... A theory of the plasma contacting process is described and experimental results obtained using three different hollow cathode-based plasma contactors are presented. The existence of a sheath across which the bulk of the voltage drop associated with the contacting process occurs is demonstrated. Test results are shown to agree with a model of a spherical, space-charge-limited double sheath. These results suggest that high pressure hollow cathode operation is difficult to achieve and that special care must be taken to assure that the electron emission region remains diffuse and attached to the low work function insert. ... A theoretical study of hollow cathode operation at high electron emission currents is presented. Preliminary experiments using the constrained sheath optics concept to achieve ion extraction under conditions of high beam current density, low net accelerating voltage and well columniated beamlet formation are discussed."
A survey of oscillating flow in Stirling engine heat exchangers by T. W Simon( Book )

2 editions published in 1988 in English and held by 136 WorldCat member libraries worldwide

Tribological properties of polymer films and solid bodies in a vacuum environment by Robert L Fusaro( Book )

2 editions published in 1987 in English and held by 134 WorldCat member libraries worldwide

On orbital allotments for geostationary satellites by David J. A Gonsalvez( Book )

3 editions published in 1986 in English and held by 129 WorldCat member libraries worldwide

 
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Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.52 (from 0.45 for Aeropropul ... to 0.63 for Oversight, ...)

Alternative Names

controlled identityLewis Flight Propulsion Laboratory

controlled identityNASA Glenn Research Center

controlled identityUnited States. National Aeronautics and Space Administration

Cleveland (Ohio) Lewis Research Center

LeRC

NASA-Lewis Research Center

National Aeronautics and Space Administration. Lewis Research Center.

United States Lewis Research Center

United States Lewis Research Center, Cleveland

United States. National Aeronautics and Space Administration. Lewis Research Center

USA National Aeronautics and Space Administration Lewis Research Center

Languages
English (94)