Now showing items 361-380 of 3613

    • NASA-TR-R-100 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1961
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Bodies of revolution in free flight - zero-lift drag data.
      Subject(s) : BODIES OF REVOLUTION , BODY OF REVOLUTION , DATA ACQUISITION , DRAG , FREE FLIGHT , ZERO LIFT ,
    • NASA-LLIS-0318 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      From the inception of SL-3 until the flight, the experiment complement changed three or four times. These changes occurred during Payload integration and each time required ...
      Subject(s) : Payloads , Policy & Planning ,
    • NASA-LLIS-0087 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      OMRSD S073A.90 thru .230 requires verification of voltages, phasing, and talkbacks to the orbiter. Present talkback verification method for the payload retention latch ...
      Subject(s) : Energy , Flight Equipment , Ground Operations , Hardware , Launch Vehicle , Payloads ,
    • NASA-LLIS-1051 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Line-Replaceable Unit (LRU) Restoration and Upgrading
      Subject(s) : Aerospace Safety Advisory Panel , Logistics , Parts Materials & Processes , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance ,
    • NASA NPR 2841.1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      This document establishes requirements and responsibilities for the policy set forth in NASA Policy Directive (NPD) 2800.1, Managing Information Technology, in order to properly manage identity, ...
    • NASA-LLIS-0632 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During the STS-90 flight, there was a repeated need to access the specimens contained within the Animal Enclosure Modules. The operation to gain access required the mating ...
      Subject(s) : Flight Equipment , Hardware , Payloads , Research & Development , Safety & Mission Assurance , Test & Verification ,
    • NACA-ARR-L5F30 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1945
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      One of the devices employed for balancing control surfaces, especially ailerons, of modern high-speed airplanes is the sealed internal balance (fig. 1), Much Of the experimental work that has been done in ...
    • NASA-LLIS-0698 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Use heat pipes, preferably aluminum heat pipes charged with anhydrous ammonia, in spacecraft and instrument thermal control applications. This practice enhances the control and flow of heat ...
    • NASA-LLIS-1460 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      To avoid witness scheduling and pre-hearing preparation legal complications, a specific individual on the Investigation Board staff should propose and coordinate witnesses for public hearings.
      Subject(s) : Accident Investigation , Administration/Organization , External Relations , NASA Standards , Policy & Planning , Safety & Mission Assurance ,
    • NASA NPR 9050.4 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      This NASA Procedural Requirements (NPR) provides the financial management requirements for cash management reviews and compliance with improper payment policies and regulations.
      A ...
    • NACA-RM-L7A30 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1947
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Up to the present the, very few high Reynolds number air-load data applicable to the structural design of double slotted flay and their supporting and retracting mechanisms are available. For this reason ...
    • NASA-LLIS-0432 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The MO Traveling Wave Tube Amplifiers (TWTAs) were not powered during qualification Pyrotechnic Shock testing. As a result, the TWTA beam and cathode heaters were not powered during the ...
      Subject(s) : Communication Systems , Hardware , RF Testing , Test & Verification ,
    • NASA-LLIS-0231 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During winter operation of a cooling tower that was operating in a standby mode, a large section of the tower collapsed due to an unusual accretion of ice in the central ...
      Subject(s) : Environment , Facilities , Ground Operations , Hardware ,
    • NACA-TN-1222 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1947
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      In reference 1 Timoshenko presents a solution for the buckling stresses of simply supported rectangular flat plates in shear. Timoshenko considered only the equations which permitted a buckle pattern ...
      Subject(s) : BUCKLING , FLAT , FORMULAS , LOADS , PLATES , RECTANGULAR , SHEAR , STRESSES ,
    • NASA-TN-D-6283 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1971
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Hypersonic and supersonic angle of attack flow about asymmetric and axisymmetric blunt bodies based on time dependent finite difference theory and method of characteristics
      Subject(s) : ANGLE , ASYMMETRY , ATTACK , AXISYMMETRIC , BLUNT , BODIES , CHARACTERISTICS , DEPENDENCE , DIFFERENCE , DISTRIBUTION , FINITE , FLOW , HYPERSONIC , METHOD , SUPERSONIC , THEORY , TIME ,
    • NACA-TN-1759 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A high-speed wind-tunnel investigation of a taporod wing of NACA 66-series airfoil sections equipped with split flaps has been conducted at Mach numbers up to 0.585 to determine the effects of compressibility on the ...
      Subject(s) : AIRFOILS , CARRIED , CHARACTERISTICS , COMPRESSIBILITY , DISTRIBUTION , DRAG , EFFECT , FLAPS , FULL , HIGH , LAL , LOW , MOMENTS , NACA , ORDINATES , PARTIAL , PITCHING , PRESSURE , SERIES , SPAN , SPEED , SPLIT , TAPERED , TESTS , TUNNEL , WIND , WING , WINGS , WORK ,
    • NASA-LLIS-1289 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The project had three significant challenges with respect to managing human resources, and the potential loss of any project member was a significant risk.
      First, the ...
      Subject(s) : Administration/Organization , Human Resources & Education , Risk Management/Assessment ,
    • NACA-RM-L51I06 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Wings of triangular plan form appear, in many respects, to be structurally and aerodynamically suitable for high-speed airplanes; however, adequate longitudinal control is difficult to obtain for these ...
    • NASA-LLIS-1463 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      An in-place, operational web-based Mishap Investigation Support System on hot standby, and a designated management team ready to support operational requirements and customization are needed ...
      Subject(s) : Accident Investigation , Administration/Organization , Computers , Configuration Management , Information Technology/Systems , NASA Standards , Policy & Planning , Safety & Mission Assurance , Security ,
    • NASA-LLIS-0095 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Technicians were in the process of extending platform 10-2 in OPF HB-1. After extending the platform about 3 feet, the observer noted that the platform would not clear the ...
      Subject(s) : Facilities , Hardware , Launch Process , Lifting Devices ,