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Capture, Analyze, Diagnose: Realizability Checking of Requirements in FRET
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Nasa checks out ceramic coatings.
Lubrication with inorganic binders used for coatings exposed to high temperatures
Thermocouples electrically checked while connected to data system
Constant current source is connected across the input of the millivolt measuring system to monitor the electrical continuity and resistance of multiple thermocouple installations without disconnecting them from a data system. This technique monitored gage thermocouple leads during the assembly and preflight testing of the Project Fire reentry packages.
The importance of quality control and integrity checking
Quality control techniques and separable connector reliability for use at cryogenic temperatures
Timing of check out before a critical event.
Timing of checkout in system with constant failure rate
Calibrating ultrasonic test equipment for checking thin metal strip stock
Calibration technique detects minute laminar-type discontinuities in thin metal strip stock. Patterns of plastic tape are preselected to include minutely calculated discontinuities and the tape is applied to the strip stock to intercept the incident sonic beam.
Pocket-size manual tape reader device aids computer tape checking
Pocket-size plastic manual tape reader device aids in reading, interpreting, and correcting binary and octal coded punched tapes. The coded information is more easily read if the color of the back plate contrasts sharply with that of the tape.
Automatic testing device facilitates noise checks and electronic calibrations
Automatic Digital Noise Checker determines the noise content of the many analog imputs of a data acquisition system and whether the Electronic Calibrations /EC/ on some data channels are operating properly.
Test report for 8-inch Check Valve Mission Valve and Pump Company part number 15 CPF-311 NASA drawing number 75M17763 HCV-9
Functional and environment testing of 8-inch valve used in vaporizer units and umbilical tower hydrogen vent
Development of flight check-out system Final report
Flight checkout system breadboard design, construction and testing
Cold wall thermal vacuum, thermal design check for fully insulated experiment packages
Analytical method for finding heat balance of insulated OGO experiment packages from thermal stability data and without solar simulation
Checking flat conductor cable spacing by means of a moire pattern
Moire tester detects small variations in flat conductor cable spacing by a quick, visual inspection. This device compares the cable to be tested with the negative of a very precise standard cable. The moire, consisting of bands of light and dark zones and its irregularities, can be interpreted as errors in spacing.
Volume-checking tool
Tool, consisting of a graduated storage vessel and a control panel, can determine the amount of gas entrained by fluid in a closed system, the amount of fluid remaining in a dried system of known volume, or the volume of a container of unknown size.
Check of a three-dimensional reactor shielding code by comparison with ML-1 reactor experiment
Three dimensional Monte Carlo reactor shielding code evaluation by comparison with dose rate measurement on reactor shield assembly
Chatter-free check valve - A concept
Valve head moves in spiral motion away from seat. Motion is controlled by travel of pin along spiral groove in valve guide. Clearances between pin and groove permit free motion of valve, but effectively dampen vibration and chattering.
A Special NASTRAN Program for Input Checking and Undeformed Structure Plotting
NASTRAN program for input data checkout and undeformed structure plotting
Numerical check on the accuracy of spherical-wave expansions.
A simple and sensitive test for evaluating the numerical accuracy of a spherical-wave expansion is presented. The basic idea is to compare two different expansions of the same electromagnetic field, computed with respect to different coordinate origins. The use of the technique is illustrated by an example based on the experimental pattern of a horn antenna.