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基本信息

【范围】

This SAE Aerospace Information Report (AIR) provides methodologies and approaches that have been used to install and integrate full-authority-digital-engine-control (FADEC) systems on transport category aircraft. Although the information provided is based on turbofan engines installed on large commercial transports, many of the issues raised are equally applicable to corporate, general aviation, regional and commuter aircraft, and to military installations, particularly when commercial aircraft are employed by military users. The word “engine” is used to designate the aircraft propulsion system. The engine station designations used in this report are shown in Figure 1. Most of the material concerns an Electronic Engine Control (EEC) with its associated software, and its functional integration with the aircraft. However, the report also addresses the physical environment associated with the EEC and its associated wiring and sensors. Since most of today’s transport category engines use dual-channel full-authority digital engine control (FADEC) systems, this is the configuration which is primarily addressed. A typical FADEC system configuration is shown in Figure 2. Special considerations that pertain to single-channel FADEC systems or limited authority “supervisory” control systems are also addressed. 1.1 Purpose: This report provides guidance to engine/control designers and aircraft system designers on the issues associated with the installation and integration of engine control systems with aircraft systems. Future technologies employed may be different from those addressed in this report, but the basic concepts are the same. The readers must judge the importance of the concepts being addressed to the technology that they are employing in a new application. The examples used have satisfied the requirements in existence at the time of design/certification; they are not considered requirements. 1.2 Field of Application: The field of application is aerospace, primarily the commercial transport aircraft and their engines certified under Title 14 of the Code of Federal Regulations (14 CFR), part 25, but it may also apply to commuter aircraft and their engines certified under part 23 and rotorcraft certified under parts 27 and 29, which are used for commercial transport service. {2593db4f9ceb7aedccfd29fe6489d2e1.jpg} {241eaba7ae9ac7b6b65187d39ffe3835.jpg}strRefField

【与前一版的变化】

包含缩略语

ADC：
AGL：
AFM：
ATM：
ATTCS：	Also known as APR or ATR (Automatic Power or Thrust Reserve)
CMC：
CMR：
ECS：
EEC：	This term may be used to describe just the basic electronic engine control unit
EICAS：	System for displaying engine parameters and warnings to the flight crew. Also known as ECAM (Electronic Centralized Aircraft Monitoring)
EPR：
FADEC：	This term is generally used to represent to whole engine control system, including wire harnesses, fuel metering unit, etc.
FOD：
GW：
LADC：
LOTC：
MEL：
MMEL：
OAT：
OEI：
PB：
Ps：
RADC：
TAT：
Theta：
TLA：
TLD：
TMC：
Tstd：

引用文件/被引文件

AC 20-53A

Protection of Airplane Fuel Systems Against Fuel Vapor Ignition Due to Lightning

AC 20-88A

Guidelines on the Marking of Aircraft Powerplant Instruments (Displays)

AC 20-136

Protection of Aircraft Electrical/Electronic Systems against the Indirect Effects of Lightning

AC 25-13

Reduced and Derated Takeoff Thrust (Power) Procedures

AC 33.28-1

Compliance Criteria for 14 CFR §33.28

SAE ARP5107

Guidelines for Time-Limited-Dispatch (TLD) Analysis for Electronic Engine Control Systems

SAE ARPAS755C

Aircraft Propulsion System Performance Station Designation and Nomenclature

RTCA DO-178B

Software Considerations in Airborne Systems and Equipment Certifications

RTCA DO-160D

Environmental Conditions and Test Procedures for Airborne Equipment

包含图表

Station Definitions	Typical FADEC System	Example of Thrust vs
Normal Mode Thrust S	Logic for Mode Selec	Altitude Dependent T
Engine Idle Selectio	Example of Multiplie	Thrust Schedule Usin
Thrust Rating Select	Ambient Temperature	Thrust* as a Functio
Moving Thrust Lever	Non-Moving Thrust Le	All Engines Operatin
One Engine Inoperati	Typical Cross-Manifo	Typical Body or Nace
Total Air Temperatur	Non-Aspirated TAT Pr	Engine Inlet Mounted
Typical FADEC Select	Typical Presentation	Typical FADEC Engine
Typical EICAS System