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Vol. 1 19--00--1 REV 56, Jan 31/03 PNEUMATIC Table of Contents Flight Crew Operating Manual CSP A--013 MASTER CHAPTER 19 -- PNEUMATIC Page TABLE OF CONTENTS 19--00 Table of Contents 19--00--1 INTRODUCTION 19--10 Introduction 19--10--1 BLEED AIR SYSTEM 19--20 Bleed Air System 19--20--1 Engine Bleed Air 19--20--1 APU Bleed Air 19--20--1 High Pressure Ground Air Connection 19--20--6 System Circuit Breakers 19--20--7 BLEED AIR LEAK DETECTION 19--30 Bleed Air Leak Detection 19--30--1 System Circuit Breakers 19--30--5 LIST OF ILLUSTRATIONS INTRODUCTION Figure 19--10--1 Bleed Air Distribution 19--10--2 BLEED AIR SYSTEM Figure 19--20--1 Bleed Air System Schematic 19--20--2 Figure 19--20--2 Bleed Air System Controls 19--20--3 Figure 19--20--3 ECS Page 19--20--4 Figure 19--20--4 Bleed Air System EICAS Indications 19--20--5 BLEED AIR LEAK DETECTION Figure 19--30--1 Bleed Air Leak Detection and Warning System 19--30--2 Figure 19--30--2 Bleed Air System Control Panel 19--30--3 Figure 19--30--3 Bleed Air Leak Detection -- Loop EICAS Indications 19--30--4 REV 56, Jan 31/03 Vol. 1 19--00--2 PNEUMATIC Table of Contents Flight Crew Operating Manual MASTER CSP A--013 THIS PAGE INTENTIONALLY LEFT BLANK Vol. 1 19--10--1 REV 56, Jan 31/03 PNEUMATIC Introduction Flight Crew Operating Manual CSP A--013 MASTER 1. INTRODUCTION The pneumatic system consists of two separate bleed air systems. S Low pressure (10th stage) bleed air system S High pressure (14th stage) bleed air system. The low pressure system is supplied bleed air from the 10th stage of both engine compressors. The 10th stage air is used to supply air for the left and right environmental control systems, for pressurization and for engine starting. The APU bleed air system or high pressure air from a ground air source can also be used to meet these requirements. Normally, each engine supplies the user system on the respective side but, if the 10th stage bleed air supply is lost from one side, a bleed isolation valve is provided for cross--bleeding from the operable side. The environmental control system can also receive conditioned air from a ground air cart. <0007> The high pressure system is supplied hot bleed air from the 14th stage of both engine compressors. The 14th stage bleed air is used to supply the requirements of the wing and cowl anti--ice systems and for thrust reverser operations. Normally, each engine supplies the user system on the respective side but, if the 14th stage bleed air supply is lost from one side, a wing isolation valve is provided for cross--bleeding from the operable side. The bleed air leak detection system monitors the pneumatic ducting for high temperature bleed air leaks. When the system detects a leak, visual warnings are displayed and aural warnings sound to alert the crew to turn off the affected system. REV 56, Jan 31/03 Vol. 1 19--10--2 PNEUMATIC Introduction Flight Crew Operating Manual MASTER CSP A--013 Bleed Air Distribution Figure 19---10---1 LEFT AND RIGHT 10 TH STAGE BLEED AIR CABIN PRESSURE ENGINE STARTING AIR CONDITIONING GROUND SOURCE APU LEFT AND RIGHT 14 TH STAGE BLEED AIR ENGINE COWL ANTI--ICE WING ANTI--ICE THRUST REVERSERS BLEED AIR SOURCES Vol. 1 19--20--1 REV 56, Jan 31/03 PNEUMATIC Bleed Air System Flight Crew Operating Manual CSP A--013 MASTER 1. BLEED AIR SYSTEM A. Engine Bleed Air The engine supplies both low (10th stage) and high (14th stage) pressure bleed air from the compressors to the low and high pressure manifolds. (1) Low Pressure (10th stage) The low pressure bleed air manifold receives pressurized air from: S The engine compressors 10th stage or, S The APU compressor or, S From an external ground air source. Low pressure operated aircraft systems include engine starting, air-conditioning and pressurization. Bleed air to the low pressure manifold is controlled by 10TH STAGE bleed air switchlights on the BLEED AIR control panel. The switchlights operate the respective L/R 10th stage bleed air shutoff valves. The left and right systems normally operate independently but can be connected by opening the bleed isolation valve. The bleed isolation valve is controlled by the 10TH STAGE ISOL switchlight on the BLEED AIR control panel. (2) High Pressure (14th stage) The high pressure bleed air manifold receives pressurized air from the engine www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：Bombardier_CRJ_00-Pneumatic
