Browse Items (970 total)

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  "Flight Evaluation of the Command and Communication System Aboard AS-501."

  The first test of the command and communications system, a unified frequency S-band system, aboard AS-501 was successful. Compatibility of this system with the MSFN/USB sites was established. The onboard transponder and antenna system including antenna switching performed as predicted. The command performance was excellent with 5747 valid commands received onboard out of 5748 commands transmitted. Data reduction problems prevented a complete analysis of the tracking data. Telemetry system performance was satisfactory with a measured bit-error-rate of 4 x10-5 while over the Ascension Island station. This flight provided valuable data which can be used to define vehicle to-ground-station interfaces, to establish attitude constraints during translunar injection, and to improve operational procedures. One more test as successful as the AS-501 test would qualify the system as operational.; May 3,1968.
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  "Flight Control Computer for Saturn Space Vehicles."

  The flight control computer for Saturn receives attitude signals from the stable platform, rate signals from rate gyros or lead networks, and angle-of-attack information from body-fixed accelerometers or other sensors.
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  "Flight Software Development Laboratory."

  A man-in-the-loop computer facility has been created using a digital computer, display terminal,and space vehicle flight computer to enable programmers to check out flight programs in a simulated space flight environment. The simulation requires a real time multi-programmed environment, which is supplied by a control system capable of scheduling programs on 32 levels of priority interrupt as well as answering demands for service at the display terminal. A special interface device permits visibility and control of the flight program as it executes in the flight computer. On-line inputs from the programmer at the display terminal and outputs from data collection and reduction routines to the display screen are executed in real time. The Flight Software Development Laboratory has proved to be very useful in reducing program preparation time and increasing flight program confidence.
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  "Footprints on the Frontier."

  An article regarding Doctor Kurt Debris, director of NASA's Kennedy Space Center.
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  "From Michoud to the Moon."

  A history and description of the Michoud Assembly Facility in New Orleans, Louisiana.
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  "From Now On -."

  Interview with Dr. Wernher von Braun; Challenge, Winter(Dec) 1962, volume 1, number 3
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  "Fulfilling the Aerospace Engineer's Responsibility for Product Reliability."

  The management techniques described in the paper support the Saturn S-IVB Program which is being conducted for the National Aeronautics and Space Administration, Marshall Space Flight Center.
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  "Functional Management in NASA."

  This is a Comment Edition of Historical Note No. 53 prepared by a summer employee of the NASA Historical Staff (APPH). The author has agreed to integrate comments and corrections submitted by critical readers, a normal process of validation for all historical reports and studies.
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  "Furnace Brazing the F-1 Thrust Chamber for Apollo."

  This work described in this report was performed for the National Aeronautics and Space Administration under contract NASw-16. Rocketdyne is now building the F-1 engine for the Apollo lunar mission. Five F-1 engines, each capable of developing 1-1/2 million pounds of thrust will power the first stage of the launch vehicle of Saturn V.
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  "Furnace Brazing of Liquid Rocket Thrust Chambers."

  Brazing as a technique for joining metal parts has been utilized for centuries. Industry, however, has only begun to use it on a wide scale in the last twenty years. The rapid growth of brazing has been a result of consumer and military demands Tor products of lighter weight, less expense, and higher performance. Today, brazing is one of the most widely used fabrication techniques in the production of liquid rockets, gas turbines, refrigerator and other types of heat exchangers, automobile parts, vacuum tubes, and many nuclear products.