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Design, Construction, and Experimental Evaluation of a Monopropellant Powered Free Piston Hydraulic Pump

[+] Author Affiliations
Justin W. Raade, Timothy G. McGee, H. Kazerooni

University of California at Berkeley, Berkeley, CA

Paper No. IMECE2003-42606, pp. 651-658; 8 pages
doi:10.1115/IMECE2003-42606
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Dynamic Systems and Control, Volumes 1 and 2
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 0-7918-3713-0 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

A monopropellant powered free piston hydraulic pump (FPHP) was designed as a human scale (1.0 to 3.0 kW) mobile robotics power supply. The FPHP utilized high concentration hydrogen peroxide, which decomposes into hot gas when exposed to a catalyst, as the monopropellant energy source. Energy was extracted from the hydrogen peroxide and transferred directly to hydraulic fluid by expanding the hot decomposition gas in an integrated piston/cylinder arrangement. The prototype FPHP successfully produced 50 W of hydraulic power by pumping hydraulic fluid at an average pressure of 6.5 MPa (940 psi) and flow rate of 0.48 liters/min (0.13 gallons/min).

Copyright © 2003 by ASME

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