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Volume 53 - Issue 460 - April 1949

Contents

Morning Session: General Problems of the Helicopter for Civil Use

Helicopter Discussion

Afternoon Session: The Constructors' Approach to the Problem

Helicopter Discussion

Evening Session—Chairman Dr. H. Roxbee Cox

Helicopter Discussion

Research Article

  • The effect of Aeration of the Oil on the Behaviour of an Engine Lubricating System Under High Altitude Conditions

  • E. Giffen, H. R. Mills
  • Published online by Cambridge University Press:
    28 July 2016, pp. 383-404

  • The work described in this paper was done during the war, at the suggestion of the aircraft engine firms, as a result of difficulties with lubricating oil systems at high altitudes. Failure of oil pressure, seizure of bearings, or excessive loss of oil sometimes occurred and these defects were attributed to air in the lubricating oil, this air being greatly increased in volume at high altitudes because of reduced atmospheric pressure.

    The behaviour of air-oil mixtures therefore was studied to obtain fundamental information which could be applied to engine lubrication at high altitudes. The present paper deals with that part of the research which was done on a complete lubrication system under simulated altitude conditions.

Review

Correspondence