Design of Simulated Engine Bleed Air on Flight Test Bed for Large Domestic Civil Aircraft

Abstract

The simulated engine bleed air system is the critical test system for large domestic civil aircraft engine airworthiness testing.Since it is difficult to establish entire physical air consumers, how to recurrent the bleed air system dynamic characteristics for critical parameters becomes the bottleneck of the development of large domestic civil aircraft simulated engine bleed air system.Based on the pore plate current-limiting method, a simulated engine bleed air system is designed and developed, verified by the ground bench test experiment, and compared with real aircraft data.The results show that the simulated engine bleed air system has good consistency with the technical condition of the prototype aircraft, can meet the bleed simulation requirements of CCAR33, and realize the regulation and monitoring function for bleed air temperature, pressure and flow rate.

Keywords

• large aircraft
• engine
• flight test bed
• simulated bleed air system
• temperature regulation
• pressure regulation