Undercarriage Retraction Mechanisms

THE subject of retractable undercarriages has already been dealt with before the Royal Aeronautical Society as well as in numerous technical articles. This article endeavours therefore to deal with some aspects of the matter which have not been discussed very widely in the past. Reference is made to the problem as it affects the aircraft designer rather than the specialist undercarriage or hydraulic engineer, and stress is laid on the geometrical and installational problems rather than the mechanical design aspects of the equipment itself.