| 出版: | Cambridge, Mass. : Project Mac, Massachusetts Institute of Technology |
| 附註: | "This report reproduces a thesis of the same title submitted to the Department of Electrical Engineering, Massachusetts Institute of Technology, in partial fulfillment of the requirements for the degree of Doctor of Philosophy, May 1970."--p. 2 "MAC TR-69"--Cover Vita. Thesis (Ph.D.)--Massachusetts Institute of Technology, 1970 "Supported in part by Project MAC, an M.I.T. research project sponsored by the Advanced Research Projects Agency, Department of Defense, under Office of Naval Research,Nonr-4102(01)."--p. 3 |
| 出版: | [Washington, D.C. : Office of Naval Research] |
| 出版: | White Oak, Md. : Naval Ordnance Laboratory |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | "Serial no. 91-32." Hearings on organizational plans of the Council on Environmental Quality; President's first annual environmental quality report to the Congress, and Federal agency compliances with sec. 102(2)(C) of the National environmental policy act of 1969 |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | "Serial no. 91-71." |
| 出版: | Washington : U.S. Govt. Print. Office. |
| 附註: | "December 1970." At head of title: 91st Congress, 2d session, Committee print. |
| 出版: | [Washington] : Dept. of Transportation [Automobile Insurance and Compensation Study; for sale by the Supt. of Docs., U.S. Govt. Print. Off.] |
| 附註: | Includes bibliographical references. |
| 出版: | Washington, D.C. : Springfield, Va. : National Aeronautics and Space Administration ; For sale by the Clearinghouse for Federal Scientific and Technical Information [distributor] |
| 附註: | "NASA CR-1672." "September 1970." Cover title. Includes bibliographical references (p. 82). Actuator disk theory and flow field calculations for propeller induced flow with nonuniform circulation distribution. Also available online from the NASA Technical Reports Server (http://ntrs.nasa.gov/). Address as of 1/04/06: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19700029119%5f1970029119.pdf. Performing organization: Sage Action, Inc., Ithaca, New York, under Work unit no.721-01-10-04; Contract no.NAS1-8173 for Langley Research Center. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 19-20). The gamma-gamma prime region of the nickel-aluminum-chromium-titanium system at 750' C has been analyzed through the use of phase rule principles and analytic geometry to allow estimation of gamma phase composition when the composition of a two-phase quaternary alloy is known. By application of currently used phase computation methods with the above calculation, the gamma phase composition of several nickel-base super-alloys was estimated and found (except for tungsten) to be in good agreement with compositions for these alloys as reported in the literature. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration |
| 附註: | "N70-41996." Prepared at Lewis Research Center. Includes bibliographical references (p. 34). Hot-wire anemometer for velocity, intermittancy, and turbulence intensity measurements in boundary layer of accelerated flow. |
| 出版: | Washington, DC : National Aeronautics and Space Administration |
| 附註: | "L-6736." "NASA TN D-5778." "April 1970." Includes bibliographical references (p. 58-59). A l/l0-scale replica model of the Apollo/Saturn V vehicle has been tested to determine its free-free lateral vibration characteristics. Several simulated propellant loadings were investigated for each of three model configurations simulating the firststage, second-stage, and third-stage burns. Tests were conducted in both the pitch and yaw directions. A one-dimensional lumped-parameter analysis employing the transfermatrix method was used to calculate the uncoupled natural modes and frequencies of the system. Analytical parameter studies were conducted to investigate the effects of engine flexibility, liquid slosh, and decreased stiffness due to ineffective skin on the modal behavior of the system.--P. [i]. Also available online in PDF from NASA Technical Reports Server Web site. Sponsored by the National Aeronautics and Space Administration (NASA); performed by the NASA Langley Research Center under124-08-13-04-23 |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 17). A composite ablation material containing a silicone- resin base, silica fibers, and phenolic and silica hollow microspheres has been subjected to a wide range of test conditions to study its charring behavior. The ablation tests were performed at stagnationpoint pressures ranging from 0.016 to 1.3 atm and heating rates ranging from 1.34 MW/m2 to 14.8 MW/m2 in air and nitrogen. The resulting char-layer surfaces fell into three categories - black char, glassy-coated char, and gray char - as heating rates (and char surface temperatures) were increased. The char layers formed contained large percentages by weight of silicon dioxide. Silicon carbide was found to be in chars formed at high heating rates. Empirical correlations of surface recession were determined. For the higher heating rates where steady-state ablation was approached, char-layer constituents and mass loss could be predicted adequately with chemical equilibrium in the reactions at the surface assumed. System requirements: Adobe Acrobat Reader. [electronic resource] |
| 出版: | Washington, D.C. : Military Traffic Management Command : [U.S. G.P.O., Supt. of Docs., distributor] |
| ISBN: | 0041-1639 |
| 附註: | Description based on: Vol. 7, no. 7 (July 1976). Title from cover. Vols. for Feb. 1970-Aug. 1974 issued by Military Management and Terminal Service; Aug. 1974- by Military Traffic Management Command. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Office of Technical Services, Dept. of Commerce] |
| 附註: | Prepared at Lewis Research Center. "April 1970."--Cover. Major NASA subject terms: Gravity Gradiometers; Analog Simulation; Attitude Control; Control Moment Gyroscopes; Rocket Engines; Space Electric Rocket Tests Includes bibliographical references (p. 29). Impulsive or time-decaying disturbances of sufficient magnitude will cause a gravitygradient control-moment-gyro stabilized spacecraft to tumble. A procedure for operating a thruster system by ground command to perform reacquisition was functionally designed and evaluated on an analog computer. When the disturbance has ceased, an on-board thruster system is used to aline the total angular momentum vector of the spacecraft in an orientation that allows the control-moment gyros to damp all spacecraft motion into a single axis. For a spacecraft in a Sun-synchronous orbit, a procedure was found to shorten the time for attitude reacquisition by using a solar array for crude attitude information. |
| 出版: | [Washington, D.C.] : U.S. Dept of the Interior |
| 附註: | "Contract No. 14-01-0001-1803." "November 1970." |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration |
| 附註: | "L-7304." "NASA TN D-6016." "December 1970." Includes bibliographical references (p. 33). "This paper presents the results of an investigation of body-motion control of lunar-flying-platform configurations utilizing shirt-sleeved operators and a simulator with five degrees of freedom. The results show that lunar vehicles with moments of inertia up to 100 slug-ft² (136 kg-m²) in pitch and 300 or 400 slug-ft² (407 of 542 kg-m²) in roll should have satisfactory control qualities. The separation of the vehicle operator and thrusts jets from the high-inertia vehicle elements by means of a low inertia auxiliary platform resulted in satisfactory control in both pitch and roll over the range of equivalent lunar moments of inertia of 33 to 400 slug-ft² (45 to 542 kg-m²). A description of a number of useful variations of body-motion control is presented." --P. [i]. Also available online in PDF from NASA Technical Reports Server Web site. Sponsored by the National Aeronautics and Space Administration (NASA); performed by the NASA Langley Research Center under work unit no. 127-51-41-05 |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 40-42). |
| 出版: | Washington, DC : National Aeronautics and Space Administration |
| 附註: | "A-2822." "NASA TN D-7031." "December 1970." Includes bibliographical references (p. 10). The low-speed aerodynamics of a large-scale triangular wing model, with a reduced thickness, tip-turbine driven lift fan in each wing were investigated in the Ames 40-by 80-Foot Wind Tunnel. The model had a 5-percent-thick wing typical of wings designed for supersonic performance.Conventional lift-fan depth has, in the past, limited wing thickness to about 10 percent. A thinner lift fan for the present investigation was obtained by modification of a conventional fan. The modification included removing the discharge stator and reducing the fan inlet length and radius. To control airflow separation resulting from small inlet radii, blowing boundary-layer control was applied through a nozzle in the inlet. Performance of the modified fan along with aerodynamic characteristics of the total configuration is presented. The static thrust performance of the conventional fan (requiring a lo-percent wing) was equalled by the reduced thickness fans of this investigation.--P. [i]. Also available online in PDF from NASA Technical Reports Server Web site. Sponsored by the National Aeronautics and Space Administration (NASA); performed by the NASA Ames Research Center and the U.S. Army Air Mobility Research and Development Laboratory under721-01-00-05-00-21 |
| 出版: | Atlanta : U. S. Dept. of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, Center for Disease Control |
| 附註: | Errata slip inserted. Publication date stamped on cover. Cover title. Bibliography: p. 2 |
| 出版: | Washington, D.C. : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. 22151] : National Aeronautics and Space Administration |
| 附註: | Includes bibliographical references (p. 15). A lightweight simulated spacecraft air-lock structure was tested under high vacuum to evaluate structural sealing problems and to determine leakage rates. Three different types of hatch configurations and three different seal configurations were tested for a temperature range of from -40° F (-40° C) to 200' F (930 C). Leakage rates of less than 1 x cc/sec or less than 10 (to the power of negative 4) cc/day of helium (standard temperature and pressure) were attained for each hatch. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 12-13). Low-speed flutter studies of a dynamically and elastically scaled model of a large multijet transport airplane have been conducted primarily to determine the nacelle aerodynamic effects for high-bypass-ratio fan-jet engines. Data were obtained on a vertical rod mount in two wind tunnels and on a two-cable mount in one of the tunnels. The flutter response of the model was found to be dependent on nacelle aerodynamics, engine-pylon stiffness, mount-system-wind-tunnel configuration, and mass ratio. System requirements: Adobe Acrobat Reader. [electronic resource] |
| 出版: | Washington, D.C. : U.S. Dept. of Commerce, National Bureau of Standards |
| 附註: | Includes bibliographical references (p. 135-138). |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | H.R. 12941. Cadmium.--S. 3082. Manganese ore, type B (H.R. 15837)--S. 3083. Corundum.--S. 3084. Manganese ore, type A (H.R. 15836)--S. 3085. Shellac (H.R. 15838)--S. 3086. Diamond bort.--S. 3087. Chrysotile asbestos.--S. 3088. Tungsten (H.R. 15839)--S. 3089. Castor oil (H.R. 15832)--S. 3231. Cobalt (H.R. 15021)--S. 3446. Chromite.--S. 3447.Lead.--S. 3448. Bismuth (H.R. 15831)--S. 3449. Mercury.--S. 3450. Diamond stones.--S. 3451. Graphite.--S. 3452. Molybdenum.--S. 3453. Fluorspar (H.R. 15833)--S. 3454. Magnesium (H.R. 15835)--S. 3455. Zinc.--S. 3456. Manganese ore.--S. 3457. Bauxite. |
| 出版: | Washington : Marine Technology Society |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 出版: | [London : Cornmarket |
| ISBN: | 0719120209 |
| 附註: | Facsimile of 1st ed., London, Unit Library, 1902 |
| 出版: | Washington : The Bureau |
| 附註: | "Rate training manual." "NAVPERS 10378-C" |
| 出版: | Washington, D.C. : [For sale by the Clearinghouse for Federal Scientific and Technical, Springfield, Virginia 22151] : National Aeronautics and Space Administration |
| 附註: | Includes bibliographical references (p. 19-20). An evaluation of a finite-element analysis for axisymmetric liquid-propellant launch vehicles has been carried out. The evaluation is performed by comparison of results from the application of the analysis to a multistage liquid-propellant launch-vehicle model with experimentally determined resonant frequencies and deflection shapes and with results from a spring-mass analysis. A description of some of the problems encountered in this application and their solutions are presented. The methods used in preparation of the input for the associated computer program are also described. |
| 出版: | [Washington. D.C.] : U.S. Dept. of Interior, Bureau of Mines |
| 附註: | "January 1970"--Cover. Includes bibliographical references (p. 16). |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 48). Stiffness matrix for structural stability analyses on beam columns, frames, and arches. |
| 出版: | [Washington, D.C.] : Department of Transportation, Federal Aviation Administration, Air Traffic Service : For sale by the Supt. of Docs., U.S. G.P.O. |
| ISBN: | 0364-5282 |
| 附註: | Vols. for Apr. 9, 1987- issued by U.S. Department of Transportation, Federal Aviation Administration, Air Traffic Operations Service. |
| 出版: | [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines |
| 附註: | Includes bibliographical references (p. 11). |
| 出版: | Washington, D.C. : NIPCC : For sale by the Supt. of Docs., U.S. G.P.O. |
| 附註: | "Automotive Sub-Council, National Industrial Pollution Control Council"--colophon. "October 1970." |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | Includes bibliographical references. |
| 出版: | Washington : For sale by the Supt. of Docs., U. S. Govt. Print. Off. |
| 附註: | "Project 18050 DYC." Includes bibliography. v. 1. Biota and chemistry of Piceance Creek.--v. 2. Toxic effects of aqueous aluminum to rainbow trout.--v. 3. Lead toxicity to rainbow trout and testing application factor concept. |
| 出版: | [Washington] : Corps of Engineers |
| 附註: | Includes bibliographies. |
| 出版: | [New York] : Arno |
| ISBN: | 0405026536 |
| 出版: | [Washington : for sale by the Supt. of Docs., U.S. Govt. Print. Off.] |
| 附註: | Cover title. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. 22151] |
| 附註: | Includes bibliographical references (p. 35). The results indicated that no unusual piloting techniques were required to fly the landing approach on the simulated external-flow jet-flap airplane. However, a lateral-directional augmentation system was required and an autospeed control system was very beneficial. With the stability augmentation and autospeed control systems incorporated the average pilot rating assigned to the flying qualities of the simulated jet-flap configuration was 3 to 39. In addition, the results indicated that the use of spoilers or thrust modulation for direct lift control (DLC), in combination with autospeed control, was an effective system for tracking the glide slope, and both DLC systems were preferred over use of the elevator. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 29). A fixed-base visual simulation study has been conducted to determine the ability of an onboard pilot to control a single-keel all-flexible parawing and advanced Apollo spacecraft combination so as to avoid obstacles located in the desired landing area. The results of the investigation showed that the pilot avoided the obstacles approximately 96 percent of the flights and generally landed within 500 f t (152.4 m) of the center of the desired site regardless of the maximum turn-rate capability of the vehicle. |
| 出版: | [Washington : For sale by the Supt. of Docs., U.S. Govt. Print. Off.] |
| 附註: | "For the Federal Water Quality Administration, Department of the Interior." Includes bibliography. --2. Further observations from a pilot plant study. |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | At head of title: Committee print. Prepared for the Committee on Education and Labor, House of Representatives, Ninety-first Congress, second session. |
| 出版: | [Washington] : U.S. Dept. of Health, Education, and Welfare, Social and Rehabilitation Service, Administration on Aging |
| 附註: | "For administrative use." "Final report." Cover title: Interaction of nutrition and social activities on the aged. |
| 出版: | Washington] : U.S. Agricultural Research Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off. |
| 附註: | Bibliography: p. 13-14 2 |
| 出版: | Washington, D.C. : U.S. Dept. of Commerce, National Bureau of Standards |
| 附註: | Includes bibliographical references (p. 196-206). |
| 出版: | Washington, D.C. : U.S. Dept. of the Interior, Office of Saline Water : For sale by the Supt. of docs., U.S. Govt. Print. Off. |
| 附註: | Contract no. 14-01-0001-532 Includes bibliographical references (p. 108). |
| 出版: | Lemont, Ill. : Argonne National Laboratory, Materials Science Division |
| 附註: | Includes bibliographical references (p. 25). Operated by the University of ChicagoContract W-31-109-eng-38 with the U.S. Atomic Energy Commission. |
| 出版: | Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical, Springfield, Virginia 22151] |
| 附註: | Includes bibliographical references (p. 9). A wind-tunnel investigation has been conducted in the Langley full-scale tunnel to determine the static longitudinal and l a t e r a l characteristics of a model of an ejection seat equipped with a rigid-wing recovery system. Several wing and vertical-tail arrangements were tested as well as various configurations of the ejection seat alone, ranging from unfaired to completely faired s e a t s . |
| 出版: | Washington, D.C. : U.S. Dept. of the Interior : For sale by the Sept. of Documents, U.S. G.P.O. |
| 附註: | Includes bibliographical references (p. 40). Contract No. 14-01-0001-2123 |
| 出版: | Washington : U.S. Govt. Print. Off. |
| 附註: | "91-29." |