1945-01-01

OIL SYSTEM PROBLEMS at High Altitude 450201

OIL system problems resulting from high-power and high-altitude operation are listed. The various parts of an oil system are described in detail to show their effect on the overall performance of the system as related to these problems.
Curves are included to show oil pump performance and oil tank efficiency. Examples are given to illustrate the characteristics of various oil system configurations as a means of explaining why the problems listed are encountered. After offering explanations of the various problems, practical methods to achieve a remedy are suggested.
Oil dilution and the effect of fuel in the oil are discussed. The subject of oil foaming is discussed with particular reference to the effect of oil antifoaming additives. A thorough analysis is made of oil system performance using additives to show the disadvantages as well as the advantages.
A brief outline is presented of future work which should be conducted to achieve improvement in oil system performance.

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