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  • Other Sources  (5)
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  • 1
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    Unknown
    A semiautomatic test set for in-circuit testing of diodes. (1969)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: In-circuit diodes testing by semiautomatic low current regulated voltage test set
    Keywords: ELECTRONIC EQUIPMENT
    Type: ; 39 (
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The processes in spring-loaded injection valves of solid injection oil engines (1934)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: On the premise of a rectangular velocity wave arriving at the valve, the equation of motion of a spring-loaded valve stem is developed and analyzed. It is found that the stem oscillates, the oscillation frequency being consistently above the natural frequency of the nozzle stem alone, and whose amplitudes would increase in the absence of damping. The results are evaluated and verified on an example. The pressure in the valve and the spray volume are analyzed and several pertinent questions are discussed on the basis of the results.
    Type: NACA-TM-758
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Use of charts for flow discharge calculations (1941)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Various problems in connection with engine design involve flow-discharge calculations which are rendered difficult both on account of the large number of external variables that enter into the computation - i.e., changes in discharge area during the process, change in volume of the cylinder, pressure, etc., and changes in the thermal constants themselves of the flow medium. A fairly accurate solution that does not involve an excessive amount of labor can be obtained only through the extensive use of i-s tables. In the present report, a solution is offered in the form of a different method making use of the I-S table of Lutz and Wolf.
    Type: NACA-TM-972
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Dynamic similitude in internal-combustion engines (1941)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: In this report it will be seen that the piston speed - as, moreover, any other speed, such as bearing velocity - must be independent of the quantity dimensions and must be a representative quantity similar to the high speed and the specific weight per horsepower.
    Type: NACA-TM-978
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Resonance vibrations in intake and exhaust pipes of in-line engines III : the inlet process of a four-stroke-cycle engine (1940)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Using a previously developed method, the boundary process of four-stroke-cycle engines are set up. The results deviate considerably from those obtained under the assumption that the velocity fluctuation is proportional to the cylinder piston motion. The deviation is less at the position of resonance frequencies. By the method developed, the effect of the resonance vibrations on the volumetric efficiency can be demonstrated.
    Type: NACA-TM-957
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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