Accession Number : ADP006206

Title :   Pumping Systems and Flow Interfaces for Rapid Response Electronic Reheat Controls,

Corporate Author : LUCAS AEROSPACE LTD BIRMINGHAM (UNITED KINGDOM) ENGINE SYSTEMS DIV

Personal Author(s) : Yates, Thomas C. ; Smith, Trevor S.

Report Date : SEP 1987

Pagination or Media Count : 20

Abstract : Modern engine controls, including reheat controls, are based on digital electronic techniques and there are many papers published on the use of microprocessors for this purpose. This paper addresses the problems of fuel pumping and metering which are associated with digital electronic reheat controls. A survey is carried out of various pumping options including main engine and reheat fuel pumping. A technical description of single, twin, and three pump systems, including rotodynamic and positive displacement pumps is given together with comments on the relative advantages and disadvantages of the various options. A fuel flow interface designed for rapid response reheat control systems is described. The application is a digital electronic control for a future bypass engine. Comparison is made between computer simulation of the control characteristics and test results on the hardware. The report concludes with some comments on likely future advances in reheat control systems.

Descriptors :   *PUMPING, *AIRCRAFT ENGINES, *GAS TURBINES, AFTERBURNING, FUEL SYSTEMS, ELECTRONICS, DIGITAL SYSTEMS, COMPUTERIZED SIMULATION, CONTROL, CONTROL SYSTEMS, DIGITAL SYSTEMS, DISPLACEMENT, ELECTRONIC EQUIPMENT, ELECTRONICS, ENGINES, FLOW, FUELS, INTERFACES, MICROPROCESSORS, PUMPING, PUMPS, QUICK REACTION, TEST AND EVALUATION, TURBOFAN ENGINES.

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE