00000nam 2200000zi 4500 9.941871 CaOODSP 20241017155152 m o d f cr bn||||||||| 240814e197410##oncd ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- DR52-17/7-1974E-PDF Feldman, K., author. Nickel/cadmium aircraft batteries : float charge test / by K. Feldman and W.A. LePage. Ottawa : Defence Research Establishment Ottawa, October 1974. 1 online resource (ii, 23 pages) : graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier DREO report ; 705 Cover title. Digitized edition from print [produced by Defence Research and Development Canada]. "Project No. 54-03-07." Includes bibliographical references (pages 19-20). "Manufacturers have been unable to supply nickel/cadmium aircraft batteries which could pass the float charge test specified in the Canadian Forces Specification CF-B-70. Battery behaviour under the conditions of the test has therefore been investigated. The batteries tested started into thermal runaway because oxygen generated at the nickel plate reached the cadmium plate and reacted exothermally with it. Recommendations are made for battery improvement, with respect to type of separator material and how it should be wrapped around the plates. Suggestions for modification of the float charge test are also made, so that it can be more useful in identifying those batteries which are best able to withstand floating at high temperatures. Suggestions for improved screening of defective cells and for limiting the overcharge on board the aircraft are made"--Abstract, page i. Includes abstracts in English and French. Nickel-cadmium batteries Testing. Airplanes Parts Testing. Accumulateurs au nickel-cadmium Essais. Avions Pièces Essais. Defence Research Establishment Ottawa, issuing body. Canada. Department of National Defence. Research and Development Branch, issuing body. DREO report ; no. 705. (CaOODSP)9.941661 PDF 1.26 MB https://publications.gc.ca/collections/collection_2024/rddc-drdc/DR52-17-7-1974-eng.pdf 74-319