455
455

Jul 5, 2010
07/10

by
Young, L. R

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No Abstract Available

Topics: GAS-LIQUID INTERACTIONS, GRAPHS (CHARTS), LIQUID ROCKET PROPELLANTS, PRESSURIZING, ROCKET...

197
197

Jul 26, 2010
07/10

by
Phatak, Anil V.; Jain, Parveen; Palmer, Everet

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The objective of this research is to develop and test a cockpit procedural aid that can compose and present procedures that are appropriate for the given flight situation. The procedure would indicate the status of the aircraft engineering systems, and the environmental conditions. Prescribed procedures already exist for normal as well as for a number of non-normal and emergency situations, and can be presented to the crew using an interactive cockpit display. However, no procedures are...

Topics: AIRCRAFT INSTRUMENTS, REGULARITY, AUTOMATIC CONTROL, BOND GRAPHS, EXPERT SYSTEMS, MALFUNCTIONS,...

529
529

Jun 21, 2010
06/10

by
Balzer, D. L.; Barksdale, T. R.; Bowman, T. E.; Gilmore, D. E.; Gorman, D. N.; Hise, R. E., et al

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Detail design for advanced propellant management system for spacecraft propulsion systems

Topics: COLLAPSE, SIMPLIFICATION, CYLINDRICAL BODIES, DIFFERENTIAL EQUATIONS, SIMILARITY THEOREM,...

381
381

Jun 9, 2011
06/11

by
Levine, Joel S

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Biomass burning is a source of greenhouse gases, carbon dioxide, methane, and nitrous oxide. In addition, biomass burning is a source of chemically active gases, including carbon monoxide, nonmethane hydrocarbons, and nitric oxide. These gases, along with methane, lead to the chemical production of tropospheric ozone (another greenhouse gas) as well as control the concentration of the hydroxyl radical, which regulates the lifetime of almost every atmospheric gas. Following biomass burning,...

Topics: EQUATIONS OF STATE, SENSITIVITY ANALYSIS, HEAT TRANSFER, FINITE ELEMENT METHOD, TIME MARCHING,...

234
234

Jun 9, 2011
06/11

by
Seifert, Avi; Pack-Melton, La Tuni

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Effective delay of turbulent boundary layer separation could be achieved via closed-loop control. Constructing such a system requires that sensor data be processed, real-time, and fed into the controller to determine the output. Current methods for detection of turbulent boundary layer separation are lacking the capability of localized, fast and reliable identification of the boundary layer state. A method is proposed for short-time FFT processing of time series, measured by hot-film sensors,...

Topics: FEEDBACK CONTROL, NONLINEARITY, RICCATI EQUATION, EQUATIONS OF STATE, REGULATORS

1 v. (various foliations) ; 29 cm

Topics: Equations of state, Thermodynamics -- Mathematical models

406
406

Jun 9, 2011
06/11

by
Dean, Edwin B.; Wood, Darrell A.; Moore, Arlene A.; Bogart, Edward H

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In most cost estimating applications at the NASA Langley Research Center (LaRC), it is desirable to present predicted cost as a range of possible costs rather than a single predicted cost. A cost risk analysis generates a range of cost for a project and assigns a probability level to each cost value in the range. Constructing a cost risk curve requires a good estimate of the expected cost of a project. It must also include a good estimate of expected variance of the cost. Many cost risk...

Topics: AIRFOILS, DISCRETIZATION (MATHEMATICS), MACH NUMBER, PERTURBATION, SHAPE FUNCTIONS, AERODYNAMIC...

583
583

Jun 21, 2010
06/10

by
Gause, R. L.; Gilstad, D. A.; Hyde, E. H.; Nevins, C. D.; Stuckey, J. M., et al

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Cryogenic technology research reviews at Marshall Space Flight Center

Topics: CHEMICAL EQUILIBRIUM, COMPUTER PROGRAMS, SHOCK TUBES, EQUATIONS OF MOTION, EQUATIONS OF STATE, FLOW...

160
160

Jun 21, 2010
06/10

by
Payne, P

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Effect of sintering TiAg contact on p/n cells from effect of heat treatment on lithium diffused cells

Topics: GAS FLOW, CONTINUITY EQUATION, EQUATIONS OF STATE, GAS DYNAMICS, INDEPENDENT VARIABLES, NOZZLE...

1,442
1.4K

Dec 10, 2009
12/09

by
Kuenen, J. P. (Johannes Petrus), 1866-1922

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Book digitized by Google from the library of University of California and uploaded to the Internet Archive by user tpb.

Topics: Equations of state, Kinetic theory of gases

Source: http://books.google.com/books?id=Hl5DAAAAIAAJ&oe=UTF-8

659
659

Sep 14, 2008
09/08

by
Kuenen, J. P. (Johannes Petrus), 1866-1922

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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Topics: Equations of state, Kinetic theory of gases

Source: http://books.google.com/books?id=eigFAAAAMAAJ&oe=UTF-8

Journal of Research of the National Bureau of Standards

Topics: Curve fitting, data analysis, equations of state, model discrimination, surface fitting

The Benedict equation of state and isobaric heat capacities at infinite attenuation were employed in determining the thermodynamic properties of NO at -80 deg to 220 deg F and up to 3000 psi. The coefficients for the equation were established from available experimental information on the volumetric behavior of NO, and the heat capacity was obtained from spectroscopic measurements. Specific values of volume, enthalpy, entropy, and fugacity were calculated for 27 different pressures at 11...

Topics: DTIC Archive, OPFELL, J. B., SCHLINGER, W. G., SAGE, B. H., CALIFORNIA INST OF TECH PASADENA...

Summaries are given of technical reports on the following subjects: survey of literature on measurement of absorption; piezoelectric equations of state; transducer theory; measurement of specific acoustic resistance of liquids; a capacitance bridge for high frequencies; theory of radiation pressure; interferometer theory; measurement of acoustic power and intensity; and graphical methods for interpreting the performance of crystal transducers.

Topics: DTIC Archive, Cady, Walter G., CALIFORNIA INST OF TECH PASADENA NORMAN BRIDGE LAB OF PHYSICS,...

A method is summarized for the precise computation of the velocity of sound in a real gas and of its variations with experimental conditions. Two problems are discussed: (1) the inclusion of the effects of departures of the equation of state from the perfect gas law, and (2) the computation of specific heats from spectroscopic data. The method is applied to air, and data are presented for the computation of the of the velocity in air under pressures between 720 and 820 mm Hg and temperatures...

Topics: DTIC Archive, SMITH, JR, PRESTON W., HARVARD UNIV CAMBRIDGE MA ACOUSTICS RESEARCH LAB, *VELOCITY,...

Topics: DTIC Archive, Rice, William E., Hirschfelder, Joseph O., WISCONSIN UNIV-MADISON THEORETICAL...

Topics: DTIC Archive, Mason, Edward A., WISCONSIN UNIV-MADISON THEORETICAL CHEMISTRY INST, *GASES, *QUANTUM...

A semiempirical equation of state was developed which permits the solution of the internal ballistics problem and represents accurately the effects of the intermolecular forces over a wide range of pressures and densities. Since the semiempirical equation is similar in form to the perform to the perfect gas equation, it is as convenient in application to interior ballistic calculations.

Topics: DTIC Archive, Seigel, A. E., NAVAL ORDNANCE LAB WHITE OAK MD, *INTERIOR BALLISTICS, GASES,...

A method is presented of calculating the equilibrium phase boundary which requires only an equation of state for mixtures and the set of constants for each of the pure components. The binary system of n-heptane and nitrogen is investigated. The results which are graphed for 298.13 deg, 373.13 deg, 448.13 deg, and 498.13 deg K appeared to be in agreement with the experimental results of Palmer, Hirschfelder, and Boyd. (NRL, CM-702) but not with those of Boomer, Johnson, and Piercy (Can. J....

Topics: DTIC Archive, Galloway, George, Town, Duplaise, WISCONSIN UNIV-MADISON THEORETICAL CHEMISTRY INST,...

Topics: DTIC Archive, ELIASON, M. A., WISCONSIN UNIV-MADISON THEORETICAL CHEMISTRY INST, *MOLECULES, GASES,...

Topics: DTIC Archive, OFFICE OF NAVAL RESEARCH ARLINGTON VA, *DETONATIONS, *EXPLOSIVES, DETONATION WAVES,...

Topics: DTIC Archive, RANDALL, R E, ARO INC ARNOLD AFS TN, *AIR, *EQUATIONS OF STATE, *THERMODYNAMICS,...

Topics: DTIC Archive, RANDALL, R E, ARO INC ARNOLD AFS TN, *EQUATIONS OF STATE, *GASES, EQUATIONS,...

Experimental results of the study of spontaneous transition from deflagration to detonation indicate that the approach to the problem can be in two stages; the first is the formation of a shock from pressure waves engendered by a confined deflagration, and the second the shock-initiation of detonation. A program for the analytical treatment of the first stage was written for the IBM 704. Two numerical codes have been tested, one based on the so-called q- method and one which avoids amplitude...

Topics: DTIC Archive, Zovko, Carl T, NAVAL ORDNANCE LAB WHITE OAK MD, *EXPLOSIONS, *DETONATIONS, REACTION...

The literature on Biot's variational principle for heat conduction and the thermodynamic foundations of the principle are reviewed. An additional example treats the heating of slabs exposed to time-dependent heat fluxes. A specific example of a triangular heat pulse is presented in detail.

Topics: DTIC Archive, LARDNER, THOMAS J, POLYTECHNIC INST OF BROOKLYN NY, *HEAT TRANSFER, *THERMODYNAMICS,...

A study was made of the reaction history of hydrogen-air mixtures under adiabatic, iosbaric conditions. An elaborate chemistry was treated with a view toward establishing rather accurate reaction histories. In the future, simplified chemical models will be considered which will permit approximate analyses of the non-equilibrium behavior of hydrogen-air mixtures under flow conditions as, for example, in exhaust nozzles and mixing regions. The results presented for a variety of initial...

Topics: DTIC Archive, LIBBY, P A, GENERAL APPLIED SCIENCE LABS INC HEMPSTEAD NY, *REACTION KINETICS, *AIR,...

Topics: DTIC Archive, ROSE, WALTER, ILLINOIS UNIV AT URBANA-CHAMAPIGN, *HYDRODYNAMICS, *FLUID MECHANICS,...

Topics: DTIC Archive, SHEAR, RALPH E, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *EXPLOSIVES,...

The heat transfer associated with unsteady film condensation is analyzed for a vertical plate. The unsteady state is considered to be created by the time-dependent variation of either the uniform wall temperature or the g- force field. From the perturbation-type theoretical treatment, a set of universal variables and functions is derived which describes the unsteady behavior of the film. The universal functions are evaluated and tabulated so that the deviation of the heat transfer from the...

Topics: DTIC Archive, Chung, Paul M, AEROSPACE CORP EL SEGUNDO CA, *HEAT TRANSFER, *FILMS, *LAMINAR...

Topics: DTIC Archive, BOYER, M H, AERONUTRONIC FORD CORP NEWPORT BEACH CA, *DETONATION WAVES, *DETONATIONS,...

The problem of nonequilibrium drag is applied to an arbitrary body in steady adiabatic subsonic dissociating gas flow, viscosity, heat conduction and diffusion being neglected. The basic equations are: thermal and caloric equations of state, chemical relaxation equation, general equation of thermodynamic change, and first law of thermodynamics. These basic equations describe completely the thermodynamic behavior of the moving material element subjected to the effects of dissociation and...

Topics: DTIC Archive, KUSUKAWA, K, RENSSELAER POLYTECHNIC INST TROY NY, *DRAG, *RAREFIED GAS DYNAMICS,...

Development of a theoretical treatment of detonation behavior by numecal integration is reported. One minor refinement was made in the mathematcal procedures. this was primarily in the interest of completeness, rather than any anticipated signifcant effect on the results of the integration. An important development was the iscovery that the use of the von Neuman ''q'' in integrating through a reactive shock can, under some circumtances, falsify the enropy increase and, as a consequence,...

Topics: DTIC Archive, BOYER, M H, PHILCO NEWPORT BEACH CA AERONUTRONIC DIV, *DETONATIONS, *SOLID ROCKET...

A discussion of the analytical methods of predicting uniaxial stress wave propagation and spall as a result of uniformly distributed intense impulsive loading is given. For the materials for which data currently exists, no strain-rate effects are observed on yield (i.e. two aluminum alloys) and the strain-rate effect on the fracture threshold is found to be small (copper). For such materials a detailed analytical treatment is possible, once the constants associated with the constitutive...

Topics: DTIC Archive, Herrmann, Walter, MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES...

The well-known practice of using the mirror image, in the P,u plane, of the shock Hugoniot curve about a vertical line through the shocked state PH, uH is shown to give a complete thermodynamic description of metals when the U(shock velocity) vs. uH relationship and V-1( V/ T)P 0 are known. Use of the experimental relationship U = co + auH (a and co constants) and = constant, leads to a thermodynamic description which results in the metal appearing less compressible than if described by the...

Topics: DTIC Archive, NAVAL ORDNANCE LAB WHITE OAK MD, *THERMODYNAMICS, *SHOCK WAVES, *IMPACT SHOCK, *WAVE...

Topics: DTIC Archive, RINEY, T D, GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV, *HYPERVELOCITY...

Topics: DTIC Archive, LUTZKY, MORTON, NAVAL ORDNANCE LAB WHITE OAK MD, *EXPLOSIVES, *EXPLOSIONS, ENERGY,...

Topics: DTIC Archive, Friedman, H L, GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV, *PLASTICS,...

Topics: DTIC Archive, GUMENYUK, V S, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *SHELLS(STRUCTURAL...

Topics: DTIC Archive, RABINOVICH, V A, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *HYDROGEN, *GASES,...

Topics: DTIC Archive, Davids, Norman, PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF ENGINEERING SCIENCE...

Transition metal complexes present interesting possibilities for the elucidation of the factors influencing the electrical conductivities of solids. This research is directed toward a better understanding of the process of electron transport in solids through studies of electrical properties of a series of related complexes.

Topics: DTIC Archive, ZWICKEL, A M, *COMPLEX COMPOUNDS, IRIDIUM, ELECTRICAL RESISTANCE, EQUATIONS OF STATE,...

Topics: DTIC Archive, GURTIN, M E, BROWN UNIV PROVIDENCE RI DIV OF APPLIED MATHEMATICS, *EQUATIONS, LINEAR...

That portion of the line absorption coefficient for heated air which depends only on the molecular band systems,i.e.,not on population numbers, has been calculated for each line in the frequency region of interest, with a total of over 150,000 lines tabulated on magnetic tape. With the results for the O2 Schumann-Runge system, a preliminary transport calculation has been completed for a slab of molecular oxygen. The effect of line widths on transmission is illustrated, and average transmissions...

Topics: DTIC Archive, CHURCHILL, D R, LOCKHEED MISSILES AND SPACE CO INC SUNNYVALE CA, *ABSORPTION SPECTRA,...

Topics: DTIC Archive, SUN, TZE-CHIEN, BROWN UNIV PROVIDENCE RI DIV OF APPLIED MATHEMATICS, *NONLINEAR...

Topics: DTIC Archive, MINTER, C C, NAVAL RESEARCH LAB WASHINGTON DC, *GASES, NITROGEN COMPOUNDS,...

Topics: DTIC Archive, SHARN, CHARLES F, NAVAL ORDNANCE LAB WHITE OAK MD, *EQUATIONS OF STATE, *ROCKET...

When non-conventional guns are to be considered or when detailed design information is required, interior ballistic calculations become more difficult and time-consuming. To deal with these problems, the equations which describe the interior ballistic performance of guns and gun-like weapons have been programmed for the high-speed digital computers available at the Ballistic Research laboratories. The major innovation contained in the equations derived in this report is the provision for use of...

Topics: DTIC Archive, BAER, PAUL G, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *DIGITAL...

A survey of the various phases of calculations which led to the quantitative prediction of the important underwater explosion parameters for Operation Wigwam is presented. The analysis of the explosion phenomena requires a knowledge of the thermodynamic properties of water over an extremely wide pressure range, i.e., from infinity down to the low pressures of an acoustic wave. No equation of state is known which satisfactorily covers this range; therefore five separate pressure ranges were...

Topics: DTIC Archive, Snay, H G, NAVAL ORDNANCE LAB WHITE OAK MD, *SHOCK WAVES, WATER, ACOUSTIC WAVES,...

Topics: DTIC Archive, Enig, Julius W, NAVAL ORDNANCE LAB WHITE OAK MD, *SHOCK WAVES, *TNT, *EXPLOSIVES...

Topics: DTIC Archive, Boyer, M H, PHILCO NEWPORT BEACH CA AERONUTRONIC DIV, *DETONATIONS, *SOLID ROCKET...