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A Feasibility Study of a Microgravity Enhancement System for Space Station Freedom

A Feasibility Study of a Microgravity Enhancement System for Space Station Freedom


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About the Book

The current low frequency microgravity requirements for Space Station Freedom (SSF) call for a level of less than 1 micro-g over 50 percent of all the laboratory racks for continuous periods of 30 days for at least 180 days per year. While this requirement is attainable for some of the laboratory modules for the Permanently Manned Configuration (PMC), it can not be met for the Man-Tended Configuration (MTC). In addition, many experiments would prefer even lower acceleration levels. To improve the microgravity environment, the Microgravity Enhancement System (MESYS) will apply a continuous thrust to SSF, to negate the disturbing gravity gradient and drag forces. The MESYS consists of a sensor, throttle-able thrusters and a control system. Both a proof mass system and accelerometer were evaluated for use as the sensor. The net result of the MESYS will be to shift the microgravity contours from the center of mass to a chosen location. Results indicate the MESYS is not feasible for MTC since it will require 5,073 kg of hydrazine fuel and 7,660 watts of power for 30 days of operation during average atmospheric conditions. For PMC, the MESYS is much more practical since only 4,008 kg of fuel and 5,640 watts of power are required. Diamond, Preston S. and Tolson, Robert H. Unspecified Center ACCELEROMETERS; CENTER OF MASS; FEASIBILITY ANALYSIS; MATHEMATICAL MODELS; MICROGRAVITY; SPACE STATION FREEDOM; VIBRATION ISOLATORS; CONTROL SYSTEMS DESIGN; DRAG; EQUATIONS OF MOTION...


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Product Details
  • ISBN-13: 9781722896850
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 126
  • Spine Width: 7 mm
  • Width: 216 mm
  • ISBN-10: 172289685X
  • Publisher Date: 17 Jul 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 308 gr


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