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1890 (X)

       
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Records: 41 - 60 of 1,000,000 - Pages: 
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LASER ANEMOMETRY FOR HOT FLOWS

By: KUGLER, P. ; LANGER, G

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; THE FUNDAMENTAL PRINCIPLES, INSTRUMENTATION, AND PRACTICAL OPERATION OF LDA AND LASER-TRANSIT-ANEMOMETRY SYSTEMS FOR MEASURING VELOCITY PROF...

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Microcomputer based controller for the Langley 0.3-meter Transonic Cryogenic Tunnel

By: Balakrishna, S. ; Kilgore, W. Alle

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Flow control of the Langley 0.3-meter Transonic Cryogenic Tunnel (TCT) is a multivariable nonlinear control problem. Globally stable control...

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Theory of diffusion processes in moving fluids (hydrodynamics of large Prandtl number)

By: Levich, V. I

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents

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Growth and characterization of materials for tunable lasers in the near infrared spectral region

By: Powell, Richard C. ; Martin, Joel J

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; During this reporting period, work proceeded in two directions. The first was the development of crystal growth procedures for rare earth do...

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Directions for programming in FORTRAN 77

By: Schuster, Hildegar

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Programming rules for FORTRAN 77 are introduced in order to reduce long-term costs of software development and maintenance. General rules ar...

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Properties of two composite materials made of toughened epoxy resin and high-strain graphite fiber

By: Dow, Marvin B. ; Smith, Donald L

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Results are presented from an experimental evaluation of IM7/8551-7 and IM6/18081, two new toughened epoxy resin, high strain graphite fiber...

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Extrema principles of entrophy production and energy dissipation in fluid mechanics

By: Horne, W. Clifton; Karamcheti, Krishnamurt

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; A survey is presented of several extrema principles of energy dissipation as applied to problems in fluid mechanics. An exact equation is de...

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Comparison of electrically driven lasers for space power transmission

By: Deyoung, R. J. ; Williams, M. D. ; Schuster, G. ; Conway, E. J; Lee, J. H.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; High-power lasers in space could provide power for a variety of future missions such as spacecraft electric power requirements and laser pro...

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Laser production and heating of plasma for MHD application

By: Jalufka, N. W

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Experiments have been made on the production and heating of plasmas by the absorption of laser radiation. These experiments were performed t...

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Potential for on-orbit manufacture of large space structures using the pultrusion process

By: Wilson, Maywood L. ; Johnson, Gary S; Macconochie, Ian O.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; On-orbit manufacture of lightweight, high-strength, advanced-composite structures using the pultrusion process is proposed. This process is...

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Efficient placement of structural dynamics sensors on the space station

By: Lepanto, Janet A. ; Shepard, G. Dudle

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; System identification of the space station dynamic model will require flight data from a finite number of judiciously placed sensors on it....

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Small-scale rotor test rig capabilities for testing vibration alleviation algorithms

By: Jacklin, Stephen A. ; Leyland, Jane Ann

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; A test was conducted to assess the capabilities of a small scale rotor test rig for implementing higher harmonic control and stability augme...

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The effect of aspect ratio and fluid flow on crystal growth

By: Barber, Patrick G

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Supersaturated solutions were conditioned at different aspect ratios before crystal growth. The conditioned solutions were poured out into a...

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Studies of CO oxidation on Pt/SnO2 catalyst in a surrogate CO2 laser facility

By: Batten, Carmen E. ; Paulin, Patricia A. ; Schryer, Jacquelin; Miller, Irvin M.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Samples of 1% Pt/SnO2 catalyst were exposed to a stoichiometric gas mixture of 1% CO and 1.2% O2 in helium over a range of flowrates from 5...

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AKPLOT: A plotter routine for IBM PC, XT and AT

By: Kantak, Ani

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; The AKPLOT software for the IBM PC, XT, and AT is an efficient and versatile tool that allows X-Y plotting of quantitative information. Feat...

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Studies in geophysics: Active tectonics

By: NON

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Active tectonics is defined within the study as tectonic movements that are expected to occur within a future time span of concern to societ...

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Changes of instability thresholds of rotor due to bearing misalignments

By: Springer, H. ; Gunter, E. J; Ecker, H.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; The influence of bearing misalignment upon the dynamic characteristics of statistically indeterminant rotor bearing systems is investigated....

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A two-dimensional numerical study of the flow inside the combustion chambers of a motored rotary engine

By: Shih, T. I. P. ; Schock, H. J; Yang, S. L.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; A numerical study was performed to investigate the unsteady, multidimensional flow inside the combustion chambers of an idealized, two-dimen...

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Intermediate and narrow band photometry of Epsilon Aurigae

By: Donovan, R. A. ; Mccook, G. P; Guinan, E. F.

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Intermediate band blue (4530A), far red (7790A) and H-alpha intermediate and narrow band photoelectric observations of the peculiar, 27 year...

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Water tunnel flow visualization using a laser

By: Beckner, C. ; Curry, R. E

Supplemental catalog subcollection information: NASA Publication Collection; Astrophysics and Technical Documents; Laser systems for flow visualization in water tunnels (similar to the vapor screen technique used in wind tunnels) can provide two-dimension...

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