DISTRIBUTED SLIDING RAILS OF THE HELICOPTER CABIN DOOR ON A CURVED AIRFRAME

摘要

In order to enable convenient ingress and egress of the passenger/cargo into helicopters, it is imperative to provide wide cabin entry. In general, sliding doors are the prime option for wider entrance due to its versatility of construction in large sizes. Sliding doors require two or three long sliding rails to open and the rails must be straight. On small helicopters it is very difficult to get the sufficient straight surface to facilitate the sliding rails. Two unique methods that are reported here enables the sliding door provision by splitting the sliding rails and distributing them. Distribution would be, some portion on the door and the remaining portion on to the airframe surface. Sliding rails length distribution between door and-the airframe is about 40%-60% on the door and 60%-40% on the airframe respectively.