Experimental evaluation of 7.82-inch /19.8-cm/ diameter throat inserts in a storable-propellant rocket engine
Failure mechanisms for specific materials and design concepts for storable propellant rocket engines
Peterson, D. A.↗
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Experimental evaluation of outer casing blowing or bleeding of single stage axial flow compressor. Part 2 - Performance of plain casing insert configuration with undistorted inlet flow and boundary layer trip
Outer casing blowing and bleeding and undistorted inlet flow for improved performance of high aspect ratio transonic rotor
Koch, C. C.↗
Flared-tube fittings with replaceable seat inserts
Three design modifications of conventional flared-tube fittings provide easily replaceable cone seats for specific applications in fluid flow lines.
Ballinger, V. J.↗
Experimental evaluation of outer case blowing or bleeding of single stage axial flow compressor. Part 3 - Performance of blowing insert configuration no. 1
Experimental evaluation of outer case blowing or bleeding of single stage axial flow compressor, and performance tests using distorted or undistorted inlet flow
Koch, C. C.↗
Design feasibility study of sterile insertion techniques Final technical report
Feasibility design concepts for sterilization canister entry port
Arnett, J. C.↗
Easy insert, easy release toggle bolt fastener
Releasable pin-type toggle bolt fastener is constructed so that, when positioned in hole, toggle action prevents its removal and locknut anchors it firmly in place. Fastener is easily removed by loosening locknut and retraction of toggle wings.
Kubokawa, C. C.↗
Tests of a single-tube-in-shell water boiler with helical-wire insert, inlet nozzle, and two different inlet-region plugs
Steady-state pressure drop and heat transfer data for single-tube-in-shell water boiler
Sekas, N. J.↗
Preliminary contingency procedures for the lunar orbit insertion, lunar orbit, and transearth injection phases of the lunar mission
Contingency procedures for lunar orbit and transearth injection in lunar mission
Foggatt, C. E.↗
Tests of a procedure for inserting satellite radiance measurements into a numerical circulation model.
Description of experiments designed to test the sensitivity of a new method for retrieving vertical temperature profiles from satellite radiance measurements to the initial guess of temperature distribution. Emphasis is placed on initial guesses of the kind that would be provided by a numerical model of the atmospheric circulation, with the objective of developing a procedure for direct use of satellite radiation measurements as input to a numerical forecasting scheme.
Hogan, J. S.↗
Simultaneous film and convection cooling of a plate inserted in the exhaust stream of a gas turbine combustor
Data were obtained on a parallel-flow film- and convection-cooled test section placed in the exhaust stream of a rectangular-sector combustor. The combustor was operated at atmospheric pressure and at exhaust temperatures of 589 and 1033 K (600 and 1400 F). The cooling air was at ambient pressure and temperature. Test results indicate that it is better to use combined film and convection cooling rather than either film or convection cooling alone for a fixed total coolant flow. An optimum ratio of film to convection cooling flow rates was determined for the particular geometry tested. The experimental results compared well with calculated results.
Marek, C. J.↗
Tracking and data system support for the Mariner Mars 1971 mission. Volume 3: Orbit insertion through end of primary mission
The Tracking and Data System (TDS) Support for the Mariner Mars 1971 Mission final report contains the deep space tracking and data acquisition activities in support of orbital operations. During this period a major NASA objective was accomplished: completion of the 180th revolution and 90th day of data gathering with the spacecraft about the planet Mars. Included are presentations of the TDS flight support pass chronology data for each of the Deep Space Stations used, and performance evaluation for the Deep Space Network Telemetry, Tracking, Command, and Monitor Systems. With the loss of Mariner 8 at launch, Mariner 9 assumed the mission plan of Mariner 8, which included the TV mapping cycles and a 12-hr orbital period. The mission plan was modified as a result of a severe dust storm on the surface of Mars, which delayed the start of the TV mapping cycles. Thus, the end of primary mission date was extended to complete the TV mapping cycles.
Barnum, P. W.↗
Pocket gauge for checking insert clocking of multipin circular connectors
Prototype gauge has been constructed of heavy clear plastic with engraved degree lines, numerals, and alignment lines. With suitable modification, gauge can be mass produced. It could be marketed directly to users or to manufacturers of circular multipin connectors.
Billmeyer, E.↗
Fabrication of graphite/epoxy cases for orbit insertion motors
The fabrication procedures are described for filament-wound rocket motor cases, approximately 26.25 inches long by 25.50 inches diameter, utilizing graphite fibers. The process utilized prepreg tape which consists of Fortafil 4-R fibers in the E-759 epoxy resin matrix. This fabrication effect demonstrated an ability to fabricate high quality graphite/epoxy rocket motor cases in the 26.25 inch by 25.50 inch size range.
Schmidt, W. W.↗
Electrophoretic sample insertion
Two conductive screens located in the flow path of an electrophoresis sample separation apparatus are charged electrically. The sample is introduced between the screens, and the charge is sufficient to disperse and hold the samples across the screens. When the charge is terminated, the samples are uniformly distributed in the flow path. Additionally, a first separation by charged properties has been accomplished.
Mccreight, L. R.↗
Apparatus for inserting and removing specimens from high temperature vacuum furnaces
The apparatus comprises a high speed gate valve for isolating the interior of the furnance from an air lock chamber on the opposite side of the gate valve. The air lock chamber is provided with valve ports connected to a vacuum source, a source of inert quenching gas, and the atmosphere, respectively. Attached to the end of the air lock chamber away from the furnace is a cylindrical tube having disposed within it a rod carrying specimen pan at the end towards the furnace and having mounted at its top end an annular magnet having a diameter slightly less than the interior diameter of the tube. The top end of the tube is closed by a removeable cap. Encircling the tube in the vicinity of the magnet is a carbon steel ring which when axially moved along the tube causes the magnet to follow it and thereby controls the position of the rod and specimen pan within the tube.
Whitehead, C. W.↗
Results of convective heating tests of a longitudinal gap on the Rockwell flat plate model (15-0, insert 7) in the NASA/Ames Research Center
Results are presented which were obtained from tests in a hypersonic wind tunnel to determine aerodynamic heating rates in a gap running parallel or slightly askew to the flow direction. The model used was a flat plate instrumented in thin-skin sections with chromelconstantan thermocouples. Heating rate profiles lengthwise along and down into the gap were obtained, and additional data were obtained from a total temperature probe and rake fabricated during the test to investigate an apparent aerodynamic cooling trend in the gap. Model variables were width, depth, length, and orientation of the gap relative to the flow direction. The tests were conducted at Mach 5.1 and Reynolds numbers per foot of 500,000, 1,000,000, and 2,000,000.
Quan, M.↗
Mixing insert for foam dispensing apparatus
A device for mixing foam ingredients is described. The device comprises an arrangement of lands situated about a cylindrical elongated shaft-like member with each land having a slot. The slots of alternate lands are positioned 180 deg from each other so that as the ingredients flow through the mixing chamber they flow from adjacent one side of the housing to the other dividing as such passes around the shaft-like member.
Simpson, W. G.↗
Low-insertion-resistance current monitor
Circuit automatically corrects for drifting offset voltage, providing long-term stability for current-monitoring instruments. Circuit is stable over wide temperature range; therefore, no compensation for temperature variations is necessary. Besides consuming little power, circuit introduces negligible noise on monitored lines and responds linearly to monitored circuit.
Paulkovich, J.↗