90-Ampere-Hour Nickel-Hydrogen Dependent Pressure Vessel (DPV) Low Earth Orbit (LEO) Life Test Evaluation

Abstract

Three 90-Ah dependent pressure vessel (DPV) battery packs are being LEO life tested at Crane. As of 9/10/01, the 40% DoD pack has completed 4,863 total cycles, and the 60% DoD pack has completed 2,885 total cycles. The third pack, formerly tested at 71% DoD but currently run at 60% DOD, had 2,067 total cycles as of 9/24/01. The philosophy of these tests is to minimize charging to maximize life, so all the packs started with low charge-discharge (C/D) ratios. As a result, the charge conditions of the packs, especially the two 60% DoD packs, have been changed to find the appropriate operating points for these cells and packs.

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Document Details

Document Type
Technical Report
Publication Date
Feb 15, 2002
Accession Number
ADA404535

Entities

People

  • J.m. Baer
  • V. J. Ang
  • W. C. Hwang

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Counter IED
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Reactions
  • Chemistry
  • Compound Semiconductors
  • Department Of Defense
  • Detectors
  • Earth Orbits
  • Fluid Mechanics
  • Hydrogen
  • Hyperspectral Imagery
  • Laser Spectroscopy
  • Life Tests
  • Low Earth Orbits
  • Materials
  • Microelectromechanical Systems
  • Pressure Vessels
  • Test And Evaluation

Readers

  • Battery Technology and Engineering
  • Defense Acquisition Program Management

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Satellites