Simulated-Altitude Investigations of Performance of Tubular Aircraft Oil Coolers

摘要

The effects of altitude on the heat dissipation and on the oil pressure drop of an unjacketed and a-conventional jacketed aircraft oil cooler were investigated at altitudes up to 40,000 feet. The investigations covered range of oil flows from 50 to 150 pounds per minute, cooling air flows from 80 to 500 pounds per minute, and oil-inlet temperatures from 1800 to 260 deg F. A method of correlating and of predicting cooling-air pressure drops at altitude has been indicated.