+ 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. + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Grisnik, Stanley P. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 9 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 6-ft High-Power Electric Propulsion Test Port, EPL Tank 5 Installed Author(s): Grisnik, Stanley P.; Theman, Elmer R.; Swiatek, Michael W.; Speicer, Henry J.; Jankovsky, Robert S. Abstract: High-power electric propulsion is a critical component of NASA s proposed missions to the outer planets. Mission studies have shown that high-power, high-specific-impulse propulsion systems can deliver 2000 kg of scientific ... NASA Center: Glenn Research Center Publication Year: 2003 Added to NTRS: 2008-06-02 Document ID: 20050215032 Scaling of Ion Thrusters to Low Power Author(s): Patterson, Michael J.; Grisnik, Stanley P.; Soulas, George C. Abstract: Analyses were conducted to examine ion thruster scaling relationships in detail to determine performance limits, and lifetime expectations for thruster input power levels below 0.5 kW. This was motivated by mission analyses ... NASA Center: Glenn Research Center Publication Year: 1998 Added to NTRS: 2005-08-25 Document ID: 19980201340; Report Number: E-11010, IEPC-97-098, NAS 1.15:206530, NASA/TM-1998-206530 Experimental study of low Reynolds number nozzles Author(s): Grisnik, Stanley P.; Smith, Tamara A.; Saltz, Larry E. Abstract: High-performance electrothermal thrusters operate in a low nozzle-throat Reynolds number regime. Under these conditions, the flow boundary layer occupies a large volume inside the nozzle, contributing to large viscous ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2005-08-25 Accession Number: 87N20383; Document ID: 19870010950; Report Number: AIAA PAPER 87-0992, E-3526, NAS 1.15:89858, NASA-TM-89858 Test facilities for high power electric propulsion Author(s): Sovey, James S.; Vetrone, Robert H.; Grisnik, Stanley P.; Myers, Roger M.; Parkes, James E. Abstract: Electric propulsion has applications for orbit raising, maneuvering of large space systems, and interplanetary missions. These missions involve propulsion power levels from tenths to tens of megawatts, depending upon the ... NASA Center: Glenn Research Center Publication Year: 1991 Added to NTRS: 2005-08-25 Accession Number: 92N11136; Document ID: 19920001918; Report Number: AIAA PAPER 91-3499, E-6576, NAS 1.15:105247, NASA-TM-105247 Measurement of Xenon Viscosity as a Function of Low Temperature and Pressure Author(s): Grisnik, Stanley P. Abstract: The measurement of xenon gas viscosity at low temperatures (175-298 K) and low pressures (350 torr-760 torr) has been performed in support of Hall Thruster testing at NASA Lewis Research Center. The measurements were taken ... NASA Center: Glenn Research Center Publication Year: 1998 Added to NTRS: 2005-08-25 Document ID: 19980219329; Report Number: AIAA Paper 98-3498, E-11244, NAS 1.15:208409, NASA/TM-1998-208409 A large high vacuum, high pumping speed space simulation chamber for electric propulsion Author(s): Grisnik, Stanley P.; Parkes, James E. Abstract: Testing high power electric propulsion devices poses unique requirements on space simulation facilities. Very high pumping speeds are required to maintain high vacuum levels while handling large volumes of exhaust products. ... NASA Center: Glenn Research Center Publication Year: 1994 Added to NTRS: 2005-08-25 Accession Number: 94N26142; Document ID: 19940021639; Report Number: E-8080, IEPC-93-151, NAS 1.15:106453, NASA-TM-106453 The effect of eddy distribution on momentum and heat transfer near the wall in turbulent pipe flow Author(s): Zurawski, Robert L.; Grisnik, Stanley P.; Hardy, Terry L.; Ghorashi, Bahman Abstract: A study was conducted to determine the effect of eddy distribution on momentum and heat transfer near the wall in turbulent pipe flow. The buffer zone was of particular interest in that it is perhaps the most complicated and ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2005-08-25 Accession Number: 88N15984; Document ID: 19880006602; Report Number: E-3882, NAS 1.15:100257, NASA-TM-100257 Test facilities for high power electric propulsion Author(s): Sovey, James S.; Vetrone, Robert H.; Grisnik, Stanley P.; Myers, Roger M.; Parkes, James E. Abstract: Electric propulsion has applications for orbit raising, maneuvering of large space systems, and interplanetary missions. These missions involve propulsion power levels from tenths to tens of megawatts, depending upon the ... NASA Center: Glenn Research Center Publication Year: 1991 Added to NTRS: 2004-11-03 Accession Number: 91A52396; Document ID: 19910067773; Report Number: AIAA PAPER 91-3499 Experimental study of low Reynolds number nozzles Author(s): Grisnik, Stanley P.; Smith, Tamara A.; Saltz, Larry E. Abstract: High-performance electrothermal thrusters operate in a low nozzle-throat Reynolds number regime. Under these conditions, the flow boundary layer occupies a large volume inside the nozzle, contributing to large viscous ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2004-11-03 Accession Number: 87A41102; Document ID: 19870053828; Report Number: AIAA PAPER 87-0992 + 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