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There are a total of 2126 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Design and performance of controlled-diffusion stator compared with original double-circular-arc stator
Author(s): Gelder, Thomas F.; Schmidt, James F.; Suder, Kenneth L.; Hathaway, Michael D.
Abstract: The capabilities of two stators, one with controlled-diffusion (CD) blade sections and one with double-circular-arc (DCA) blade sections, were compared. A CD stator was designed and tested that had the same chord length but ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N26910; Document ID: 19870017477; Report Number: AVSCOM-TR-87-C-25, E-3694, NAS 1.15:100141, NASA-TM-100141
The NASA/USAF arcjet research and technology program
Author(s): Stone, James R.; Huston, Edward S.
Abstract: Direct current arcjets have the potential to provide specific impulses greater than 500 sec with storable propellants, and greater than 1000 sec with hydrogen. This level of performance can provide significant benefits for ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N24525; Document ID: 19870015092; Report Number: AIAA PAPER 87-1946, E-3656, NAS 1.15:100112, NASA-TM-100112
Interface circuitry for superconducting bolometer
Author(s): Nelson, P. J.
Abstract: The interface circuitry described links the computer with the superconducting bolometer array. This helps demonstrate the feasibility of the array. Using the circuitry and the array, imaging will be made possible. Initial ...
NASA Center: Marshall Space Flight Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N17016; Document ID: 19870007583; Report Number: NAS 1.15:86581, NASA-TM-86581
Potential benefits of magnetic suspension and balance systems
Author(s): Lawing, Pierce L.; Dress, David A.; Kilgore, Robert A.
Abstract: The potential of Magnetic Suspension and Balance Systems (MSBS) to improve conventional wind tunnel testing techniques is discussed. Topics include: elimination of model geometry distortion and support interference to ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N17718; Document ID: 19870008285; Report Number: NAS 1.15:89079, NASA-TM-89079
A computational procedure for automated flutter analysis
Author(s): Murthy, Durbha V.; Kaza, Krishna Rao V.
Abstract: A direct solution procedure for computing the flutter Mach number and the flutter frequency is applied to the aeroelastic analysis of propfans using a finite element structural model and an unsteady aerodynamic model based ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N28058; Document ID: 19870018625; Report Number: E-3736, NAS 1.15:100171, NASA-TM-100171
Fatigue failure of regenerator screens in a high frequency Stirling engine
Author(s): Hull, David R.; Alger, Donald L.; Moore, Thomas J.; Scheuermann, Coulson M.
Abstract: Failure of Stirling Space Power Demonstrator Engine (SPDE) regenerator screens was investigated. After several hours of operation the SPDE was shut down for inspection and on removing the regenerator screens, debris of ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N18882; Document ID: 19870009449; Report Number: E-3443, NAS 1.15:88974, NASA-TM-88974
Highlights of unsteady pressure tests on a 14 percent supercritical airfoil at high Reynolds number, transonic condition
Author(s): Hess, Robert W.; Seidel, David A.; Igoe, William B.; Lawing, Pierce L.
Abstract: Steady and unsteady pressures were measured on a 2-D supercritical airfoil in the Langley Research Center 0.3-m Transonic Cryogenic Tunnel at Reynolds numbers from 6 x 1,000,000 to 35 x 1,000,000. The airfoil was oscillated ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N17667; Document ID: 19870008234; Report Number: AIAA PAPER 87-0035, NAS 1.15:89080, NASA-TM-89080
Distributed control using linear momentum exchange devices
Author(s): Sharkey, J. P.; Waites, Henry; Doane, G. B., III
Abstract: MSFC has successfully employed the use of the Vibrational Control of Space Structures (VCOSS) Linear Momentum Exchange Devices (LMEDs), which was an outgrowth of the Air Force Wright Aeronautical Laboratory (AFWAL) program, ...
NASA Center: Marshall Space Flight Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N24521; Document ID: 19870015088; Report Number: NAS 1.15:100308, NASA-TM-100308
Computation of full-coverage film-cooled airfoil temperatures by two methods and comparison with high heat flux data
Author(s): Gladden, H. J.; Yeh, F. C.; Austin, P. J., Jr.
Abstract: Two methods were used to calculate the heat flux to full-coverage film cooled airfoils and, subsequently, the airfoil wall temperatures. The calculated wall temperatures were compared to measured temperatures obtained in the ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N23934; Document ID: 19870014501; Report Number: E-3372, NAS 1.15:88931, NASA-TM-88931
Dynamic analysis of the large deployable reflector
Author(s): Calleson, Robert E.; Scott, A. Don
Abstract: The Large Deployable Reflector (LDR) is to be an astronomical observatory orbiting above Earth's obscuring atmosphere and operating in the spectral range between 30 microns and 1000 microns wavelength. The LDR will be used ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N16050; Document ID: 19870006617; Report Number: NAS 1.15:89056, NASA-TM-89056
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