Browse Items (970 total)

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  "Saturn S-IV cryogenic weigh system. Part IV : safety."

  During cryogenic weigh system operation, hydrogen when combined with oxygen can create an unsafe condition. Therefore the concentration of the residual oxygen and hydrogen from leaks in the cryogenic weigh environmental bags must be known at all times during the cryogenic weigh. Hydrogen and oxygen detectors will provide the optimum method for maintaining safe conditions. Hydrogen properties and safe mixtures are reviewed. The method selected to analyze the oxygen content is discussed. The selection, development, and testing of a hydrogen detector system is examined.
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  "Saturn S-IV cryogenic weigh system. Part I : propellant utilization."

  In order to achieve maximum vehicle efficiency, it is essential that the vehicle propellants be loaded to desired values and that these propellants approach simultaneous depletion at the end of powered flight. To accomplish precise loading and assure minimum residuals, a highly accurate and repeatable, vehicle located, propellant management (PM) or propellant utilization (PU) system must be used. As the ability to load propellants to predetermined values depends directly on the ability of the system to accurately sense the propellant masses, it is essential that the system be calibrated with respect to propellant mass under conditions resembling those to be experienced during final loading and powered flight. The use of a cryogenic weight system will reduce the unknown factors in capacitance sensor element shaping, tank geometry, and propellant properties to a degree which will permit the determination of propellant masses to with .025%.
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  "Saturn S-IV cryogenic weigh system. Part II : weigh operations."

  Two basic methods for mass determination are: (1) direct measurement, (2) volume and density determination. Both methods or variations have been used to determine space vehicle propellant mass with varying degrees of success. Stringent propellant loading accuracy requirements of k0.5 percent for the Saturn S-IV Stage have led to the development of a Cryogenic Calibration Weigh System. The method employs accurate electronic force transducers and measuring systems as the standard and experimental weighings have verified achievement of better than the required accuracy.
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  "Saturn stages S-II : July 7, 1961 : Minutes of the phase II pre-proposal conference for stage S-II procurement."

  Transcription of a confrence aiming to propose ideas for new rocket designs. Includes references to slides.
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  "Saturn IB/V Instrument Unit system description and component data: technical manual."

  This manual contains a brief description of each Instrument Unit (IU) system and their respective components for S-IU-201 through 212 and S-IU-501 through 515.
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  "Saturn and its mission."

  Presentation from Harper, discussing the Saturn Project's then-status, background and plans.
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  "Saturn and the exploration of space."

  Presentation Raymond Pisani to the East-West Bank Chamber of Commerce regarding the Saturn project's roll in space exploration and what contrabutions the East-West Bank can make in that area.
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  "Saturn and the future."

  Presentation with its main focus on the competitive and humanitarian goals of the Saturn project.
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  "The reliability picture at Marshall Space Flight Center - philosophy, staffing and management. Proposed talk to Orlando Section American Society for Quality Control."

  Document that discusses the importance of reliability in engineering.
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  "Reliability prediction in design decision."

  This paper presents some case histories in which reliability prediction plays an important role.