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  • 1
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    Safety switch permits emergency bridge crane shutdown (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Safety switch on a crane control pendant must be held closed to operate the crane. This provides for immediate power cutoff to the crane in an emergency or a pendant circuit failure.
    Keywords: MECHANICS
    Type: MFS-549
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Faired instrumentation for aerodynamic tests (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Streamlined package is installed and removed without altering aerodynamic properties of structure being tested. Method uses lightweight materials so that blade balance is maintained.
    Keywords: MECHANICS
    Type: LAR-11201 , NASA Tech Briefs (ISSN 0145-319X); 4; 3; P. 404
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Reducing flow requirements of fluid actuators (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Method reduces volumetric rate of hydraulic fluid or air to drive actuator at high speed. Method can be used with any positive displacement actuator with multiple chambers.
    Keywords: MECHANICS
    Type: LAR-11540
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 4
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    Electrical Dissipation Measurement of Polymer Phase Transitions (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Technique measures solid/solid, glass/rubber, and liquid/liquid transition temperatures in polymers having dipole moments. Technique based on change in dipole packing that occurs with each transition and measured as change in electrical dissipation factor. Change in dipole packing occuring with each transition sensed by effect on dissipation factor.
    Keywords: MECHANICS
    Type: LAR-12861 , NASA Tech Briefs (ISSN 0145-319X); 7; 3; P. 298
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Lightweight Radiator Fin (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Lightweight radiator fin made of tapered panels bent together at ends and joined to heat pipe in middle. Taper chosen for minimum mass per unit of radiated power. Intended primarily for use as part of cooling system of space station, also used on Earth to cool equipment in laboratory vacuum. Possible to modify basic design equations to design minimum-mass fins for cooling by conduction or convection.
    Keywords: MECHANICS
    Type: MSC-21558 , NASA Tech Briefs (ISSN 0145-319X); 16; 3; P. 72
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Stall-Departure-Resistance Enhancer (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Stall-departure-resistance enhancer imposes lesser drag penalty than nortex generators of older types. Increases lift by as much as 30 percent at angles of attack otherwise in poststall region. Device is flat plate wedge with 60 degree sweep angle and attached so it protrudes from leading edge of wing. Tip is sharp point, and edges made thin and sharp to induce good vortical flow. Applications include those intended to increase safety for broad range of aircraft, including trainers, fighters, general-aviation aircraft, and commercial transport aircraft. Nonaerospace applications where flow stall is problem under certain conditions, such as in control of separation in flow diffusers. Other applications in fluid machinery and fluid flow.
    Keywords: MECHANICS
    Type: LAR-14221 , NASA Tech Briefs (ISSN 0145-319X); 16; 1; P. 61
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Efficient Kinematic Computations For 7-DOF Manipulators (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Efficient algorithms for forward kinematic mappings of seven-degree-of-freedom (7-DOF) robotic manipulator having revolute joints developed on basis of representation of redundant DOF in terms of parameter called "arm angle." Continuing effort to exploit redundancy in manipulator according to concept of basic and additional tasks. Concept also discussed in "Configuration-Control Scheme Copes With Singularities" (NPO-18556) and "Increasing the Dexterity of Redundant Robots" (NPO-17801).
    Keywords: MECHANICS
    Type: NPO-18558 , NASA Tech Briefs (ISSN 0145-319X); 18; 6; P. 66
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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