The paper describes a digital electronic engine control system being built by Dowty and Smiths Industries Controls Limited (DSIC) to demonstrate the control features required for the next generation of helicopters and their power plants. It is engine mounted, fuel cooled and of lightweight design. The paper describes the mechanical design, the installation and the cooling of the system including the choice of the basic packaging concept. It also discusses the safety of flight aspects of system operation. Finally, the paper discusses how the design can be modulated to increase/reduce the capability of the system and thus, the more effectively to cover a range of requirements.
This paper summarizes the results of a 30-month program of design, fabrication, and test of an advanced electronic engine control system for small (2 to 5-lb/sec airflow) turboshaft engines. The objective of the program was to develop engine control system technology which would be implemented in future systems to meet advanced engine requirements and to alleviate many of the problems experienced with past and present control systems.
Digital Controls for Helicopter Engines