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  • 1
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    Unknown
    RLC synthesis of transfer functions (1966)
    In:  CASI
    Details
    Publication Date: 2006-10-26
    Description: Method and digital computer program for Resistance-Inductance-Capacitance /RLC/ SYNTHESIS of minimum-phase transfer functions
    Keywords: ELECTRONICS
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    OH-58 helicopter transmission failure analysis (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The OH-58 main transmission gearbox was run at varying output torques, speeds, and oil cooling rates. The gearbox was subsequently run to destruction by draining the oil from the gearbox while operating at a speed of 6200 revs per minute and 36,000 inch-pounds output torque. Primary cause of gearbox failure was overheating and melting of the planet bearing aluminum cages. Complete failure of the gearbox occurred in 28 1/2 minutes after the oil pressure dropped to zero. The alternating and maximum stresses in the gearbox top case were approximately 10 percent of the endurance limit for the material. Deflection of the bevel gear at 67000 inch-pounds output torque indicate a marginal stiffness for the bevel gear supporting system.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-TM-X-71867 , E-8633
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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