+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Lesco, D. J. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 22 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 3 Next  Application of ultrasonics to detection of fatigue cracks Author(s): Freche, J. C.; Klima, S. J.; Lesco, D. J. Abstract: Ultrasonics applied to detection of fatigue cracks in aluminum, mild steel, and alloys of aluminum and nickel NASA Center: Glenn Research Center Publication Year: 1965 Added to NTRS: 2009-02-05 Accession Number: 66N18328; Document ID: 19660009039; Report Number: NASA-TM-X-52109 Flight evaluation of an electrostatic accelerometer for measurement of low-level orbital accelerations Author(s): Lesco, D. J. Abstract: Flight test of electrostatic accelerometer which eliminates null bias problem NASA Center: Glenn Research Center Publication Year: 1968 Added to NTRS: 2008-05-28 Accession Number: 68N13974; Document ID: 19680004505; Report Number: NASA-TM-X-1488 Effect of South Atlantic magnetic anomaly on SERT 2 orbital acceleration measurements Author(s): Lesco, D. J.; Nieberding, W. C. Abstract: Effect of South Atlantic magnetic anomaly on SERT 2 spacecraft orbital acceleration measurements NASA Center: Glenn Research Center Publication Year: 1971 Added to NTRS: 2008-01-29 Accession Number: 71N20324; Document ID: 19710010849; Report Number: E-6029, NASA-TM-X-2232 Comparative in-flight thrust measurements of the SERT 2 ion thruster Author(s): Berkopec, F. D.; Lesco, D. J.; Nieberding, W. C. Abstract: Description and analysis of methods used to measure thrust of SERT 2 thruster in flight NASA Center: Glenn Research Center Publication Year: 1970 Added to NTRS: 2007-10-23 Accession Number: 70N31780; Document ID: 19700022469; Report Number: NASA-TM-X-52839 Application of ultrasonics to detection of fatigue cracks. Author(s): Freche, J. C.; Klima, S. J.; Lesco, D. J. Abstract: Formation of fatigue cracks in center notched sheet specimens of various metals ultrasonically tested for axial tensile fatigue NASA Center: NASA (non Center Specific) Publication Year: 1966 Added to NTRS: 2006-11-06 Accession Number: 66A23630; Document ID: 19660044340 Application of ultrasonics to detection of fatigue cracks. Author(s): Freche, J. C.; Klima, S. J.; Lesco, D. J. Abstract: Ultrasonic detection of fatigue crack formation in center-notched sheets of steel and alloys of aluminum and nickel NASA Center: NASA (non Center Specific) Publication Year: 1965 Added to NTRS: 2006-11-06 Accession Number: 66A15938; Document ID: 19660036648 Ultrasonic technique for detection and measurement of fatigue cracks Author(s): Freche, J. C.; Klima, S. J.; Lesco, D. J. Abstract: Ultrasonic system for detection and measurement of fatigue cracks in notched steel alloys NASA Center: Glenn Research Center Publication Year: 1965 Added to NTRS: 2006-11-06 Accession Number: 65N32647; Document ID: 19650023046; Report Number: NASA-TN-D-3007 Test-vehicle cycle programmer Author(s): Lesco, D. J.; Soltis, R. F. Abstract: Instrument reduces manpower needed for testing electric powered vehicles. Device has dual scale that allows operator to compare actual speed with preprogrammed test speed. Features include large meter, buzzer, packaging to ... NASA Center: Glenn Research Center Publication Year: 1978 Added to NTRS: 2005-09-30 Accession Number: 78B10020; Document ID: 19780000020; Report Number: LEW-12977 Rotating turbine blade pyrometer Author(s): Buchele, D. R.; Lesco, D. J. Abstract: Non-contacting pyrometer system optically measures surface temperature distribution on rotating turbine blade, comprising line-by-line scan via fiber optic probe. Each scan line output is converted to digital signals, ... NASA Center: Glenn Research Center Publication Year: 1974 Added to NTRS: 2005-09-30 Accession Number: 74B10068; Document ID: 19740000068; Report Number: LEW-12218 Fatigue cracks detected and measured without test interruption Author(s): Freche, J. C.; Klima, S. J.; Lesco, D. J. Abstract: Ultrasonic flaw detector records cracks in materials undergoing fatigue tests, without interfering with test progress. The detector contains modified transducers clamped to the specimens, and an oscillograph readout. NASA Center: NASA (non Center Specific) Publication Year: 1966 Added to NTRS: 2005-09-30 Accession Number: 66B10178; Document ID: 19660000177; Report Number: LEW-266 1 2 3 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007