NASA - National Aeronautics and Space Administration (NASA): Recent submissions

Now showing items 1581-1600 of 3613

    • NACA-TN-3848 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A study was made in the Langley 19-foot pressure tunnel to determine the effects of fuselage afterbody shape , split flaps, and variations in the span of the leading-edge flaps on the stability contributed by the horizontal ...

    • NASA-TM-X-72797 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1975
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A high pressure water blast with rotating spray bar treatment for removing paint and rubber deposits from airport runways is studied. The results of the evaluation suggest that the treatment is very effective in removing ...
      Subject(s) : AIRCRAFT LANDING , AIRPORTS , DECONTAMINATION , MAINTENANCE , RUNWAYS , SKIDDING ,

    • NACA-ACR-L4F23 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1944
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests have been made in two-dimensional flow to investigate the aerodynamic characteristics of a double flap with an internal and an overhang balance. Three sizes of each typee of balance were tested with three ...

    • NASA NPD 9250.1 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      a. This NPD is applicable to NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers. This NPD is applicable to the Jet Propulsion ...

    • NASA-LLIS-0521 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On 11-12-92, research runs were being conducted in the unitary wind tunnel. During one test run, the downstream wood fairing on the model side mount splitter plate came ...
      Subject(s) : Safety & Mission Assurance , Test Article , Test Facility ,

    • NASA-LLIS-0766 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Use built-in redundancies, safe and arm provisions, approved and qualified initiators and detonators, shaped charge development testing to collect empirical data for design (empirical testing), ...

    • NASA NPD 8900.5 REV B 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This NASA Policy Directive (NPD) is applicable to NASA Headquarters and all NASA Centers, including Component Facilities and Technical and Service Support Centers. This language applies to the Jet Propulsion Laboratory and ...

    • NASA-LLIS-1376 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      During thermal ambient testing of Mars Exploration Rover (MER), condensation formed inside the test chamber and upon the flight article due to inadequate sealing and improper purging of the ...
      Subject(s) : Cryogenic Systems , Environment , Facilities , facility certification , Flight Equipment , Ground Equipment , Ground Operations , Hardware , Payloads , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft , Test & Verification , Test Article , test damage , Test Facility , test-induced failure ,

    • NACA-TN-4080 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests on two aspects of the behavior of wide-angle, plane-walled, two-dimensional diffusers with essentially incompressible flow have been conducted in the Mechanical Engineering Laboratory at Stanford University. First, ...

    • NASA-CR-152141 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1978
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Updated parametric prop-fan data packages are presented and the rationale used in developing the new prop-fan data is detailed. These data represent Hamilton Standard's projections of prop-fan characteristics for aircraft ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , CHARACTERISTICS , COST , DATA , DESIGN , ENGINE , ESTIMATES , FANS , FORECASTING , NOISE , PERFORMANCE , PREDICTION , PROPELLER , TABLES , TECHNOLOGICAL ,

    • NASA-LLIS-0134 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The orbiter PRSD system provides GH2/GO2 for fuel cell operation. The PRSD H2 T-0 umbilical vent is installed to support controlled venting of the PRSD H2 system during ...
      Subject(s) : Hardware , Logistics ,

    • NASA-LLIS-1171 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Reduction in NASA Knowledge Base Due to Loss of Experienced Employees and Hiring of Inexperienced Employees
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , External Relations , Human Resources & Education , Policy & Planning ,

    • NACA-WR-L-489 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1940
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Tests have been made in the NACA full-scale wind tunnel on 11 single-engine military airplanes to investigate methods for increasing their high speed. The airplanes were tested for the Navy Bureau of ...

    • NACA-WR-L-454 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1942
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force-test measurements in two-dimensional flow have been made in the NACA 4- by 6-foot vertical tunnel of the characteristics of an NACA 0015 airfoil equipped with a plain flap having a chord 30 percent of the airfoil ...

    • NASA-LLIS-0757 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Use a multi-disciplinary approach to investigations using fault-tree analysis for complex systems to derive maximum benefit from fault-tree methodology. Adhere to proven principles in the ...

    • NACA-TR-685 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1940
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The results of the basic flutter theory originally devised in 1934 and published as NACA Technical Report no. 496 are presented in a simpler and more complete form convenient for further studies. The paper attempts to ...
      Subject(s) : AERODYNAMIC , AILERONS , ANALYSIS , COEFFICIENTS , COMPARISON , CONFIGURATIONS , FLUTTER , FORCES , FREQUENCIES , HIGH , MATHEMATICS , OSCILLATIONS , SPEED , STABILITY , TESTS , THEORIES , TUNNEL , WIND , WING , WINGS ,

    • NASA-LLIS-1628 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Significant time delays in the display of real time flight test data on a "lap top" computer have been observed.

    • NASA-LLIS-1595 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Focal Plane Arrays (FPAs)-to-Read-Only Integrated Circuits (ROICs) timing and frame synchronization for imaging interferometers are significantly different than those typically used in ...
      Subject(s) : Research & Development ,

    • NACA-WR-L-301 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1941
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests have been made in the NACA 4-, by 6-foot vertical wind tunnel of an NACA 0009 airfoil with a 30-percent-chord flap having a small amount of aerodynamic balance. In the investigation the effect of balance nose shape ...

    • NASA-TM-X-72078 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1973
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A computational method was developed for the fully-coupled solution of nongray, radiating gas flows with ablation product effects about blunt bodies during planetary entries. The treatment of radiation accounts for molecular ...
      Subject(s) : ABLATION , ABLATIVE , ATMOSPHERIC , BLUNT , BODIES , ENTRY , FLOW , GAS , HEAT , INVISCID , MATERIALS , RADIATIVE , REENTRY , SHIELDING , TRANSFER ,