+ 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 > Howard, F. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 4 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Liquid-Hydrogen Polygeneration System Author(s): Minderman, P.; Gutkowski, G.; Manfredi, L.; King, J.; Howard, F. Abstract: Polygeneration system uses existing technology in integrated process to produce liquid hydrogen space-vehicle propellant and secondary products as gaseous nitrogen, electrical energy, and thermal energy. Makes commercial ... NASA Center: Kennedy Space Center Publication Year: 1986 Added to NTRS: 2005-09-30 Accession Number: 86B10515; Document ID: 19860000515; Report Number: KSC-11304 Jet vortex generators for turbulent flow separation control Author(s): Selby, Gregory; Lin, J.; Howard, F. Abstract: A parametric study was performed with jet vortex generators to determine their effectiveness in controlling flow separation associated with low speed turbulent flow over a two dimensional rearward-facing ramp. Results ... NASA Center: Langley Research Center Publication Year: 1990 Added to NTRS: 2005-08-25 Accession Number: 90N27659; Document ID: 19900018343; Report Number: NAS 1.26:186959, NASA-CR-186959 Jet vortex generators for turbulent flow separation control Author(s): Selby, G.; Lin, J.; Howard, F. Abstract: A parametric study was performed with jet vortex generators to determine their effectiveness in controlling flow separation associated with low-speed turbulent flow over a two-dimensional rearward-facing ramp. Results ... NASA Center: Langley Research Center Publication Year: 1990 Added to NTRS: 2004-11-03 Accession Number: 91A54255; Document ID: 19910069632 Longitudinal grooves for bluff body drag reduction Author(s): Quass, B.; Howard, F.; Weinstein, L.; Bushnell, D. Abstract: Wind tunnel test results are presented for four axisymmetric bluff body configurations in order to determine their effect on form and pressure drag. It was found that drag reductions on the order of 40 are obtainable with an ... NASA Center: Langley Research Center Publication Year: 1981 Added to NTRS: 2004-11-03 Accession Number: 81A31608; Document ID: 19810047204 + 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