Nickel-Cadmium Aircraft Batteries: Management for Engine Cranking,
Abstract
Nickel/cadmium aircraft batteries with Celgard barrier materials may be freely used for cranking turbine engines. However, frequent use for this purpose with insufficient intervening cooling still results in successive increases in battery temperature. The experiments were terminated when 'hot spot' temperatures between the cells reached 100C. Short term experiments indicated no apparent problems. In long term use for cranking, performance was found to deteriorate as water depletion, due to overcharge, became severe. Replacement of water and deep cycling restored the original condition. Improved cranking performance was found with initial electrolyte concentrations below the customary 30% potassium hydroxide. It is emphasized that the above comments do not apply to batteries with cellophane barriers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA079687
Entities
People
- Gaston Verville
- Keival Feldman
Organizations
- Defence Research and Development Canada