| || The EH101 Electronic Instrument Systems
Author : Atkin, Kieth N.;Revell, John
Source : Defence Science Journal ; Vol:40(2) ; 1990 ; pp 139-159
Subject : 629.7 Aeronautics
Keywords : Anglo Indian helicopter;Full colour multi purpose display surfaces;Ongoing simulator program;EIS;Symbol generators;Display mode selectors;Reversionary switching
Abstract : "This paper describes the background to the introduction of an electronic instrument system on the Anglo-Italian EH101 helicopter. The demanded flexibility to accommodate the display needs of several roles leading logically to the adoption of full colour multi-purpose display surfaces and the drive to achieve maximum commonality between military and civil variants is discussed. The configurations arrived at for both variants are described together with the operating philosophy and display formats developed during an ongoing simulator program. The paper also deals with a detailed description of the hardware implementation of the EIS including the fully integrated systems architecture and details of the symbol generators (SGs), display units (DUs) and display mode selectors (DMSs). Emphasis is placed on the robust integrity characteristics and reversionary switching philosophy of the system."