*FM 1-506

Field Manual
NO 1-506		 Headquarters
Department of the Army
Washington, DC, 30 November 1990

FM 1-506

FUNDAMENTALS OF AIRCRAFT POWER PLANTS

Table of Contents

PREFACE

Part One - FUNDAMENTALS OF POWER PLANTS

CHAPTER 1 - BASIC REQUIREMENTS

Definition of Terms

Fuels

Combustion

Lubrication

Lubricating Oil Requirements

Gas Turbine Engine Lubricants

Bearings

CHAPTER 2 - BACKGROUND, DEVELOPMENT, AND THEORY

Early Development

Modern Aviation

Newton's Laws of Motion

The Brayton Cycle

Bernoulli's Theorem

Boyle's Law

Charles' Law

Pressure and Velocity

Gas Turbine Engine vs Reciprocating Engine

Part Two - GAS TURBINE ENGINES

CHAPTER 3 - PRINCIPLES, OPERATION, AND CONSTRUCTION

Principles

Engine Operation

Types of Gas Turbine Engines

Air Inlet Section

Compressor Section

Combustion Section

Turbine Section

Exhaust Section

Thrust Reversers

Oil System Seals

Materials and Methods of Construction

CHAPTER 4 - FUEL SYSTEM

Description

Turbine Engine Fuel System Components

T-700/701 Fuel System

Fuel Control Unit

T-700 Control System

T-55-L-11E/T55-L-712 Fuel Control System

CHAPTER 5 - LUBRICATING SYSTEMS

Turbine Engine Dry-Sump Lubrication

Turbine Engine Wet-Sump Lubrication

Oil System Components

Typical Oil System For T-701

Lubrication System For T-62

CHAPTER 6 - IGNITION SYSTEMS

Description

Early Induction Type

Modern Capacitor Type

High-Energy Type

Combination or Dual Duty

Electronic

Turbine Engine Ignitors

T-701 General Electric

T-55-L-712 Lycoming

CHAPTER 7 - COOLING SYSTEM

Cooling of Engine Outer Case

Cooling of Combustion Chamber and Gas Producer

External Cooling

CHAPTER 8 - ACCESSORY SYSTEM

Bleed-Air-Driven Accessories

Mechanically Driven Accessories

Lycoming T-55 Engine

General Electric T-701

Accessory Drives

Starters

CHAPTER 9 - INSTRUMENT SYSTEMS

Vertical Instrument Display System(VIDS)

Tachometer System

Torquemeter Indicating System

Exhaust Gas Temperature Indicating System

Exhaust Gas Temperature Indicators

Fuel-Flow-Rate Indicating System

Fuel Flow Indicator

Fuel Pressure Indicating System

Fuel Inlet Pressure Indicator

Engine Oil Pressure Indicating System

Oil Pressure Indicator

Engine Oil Temperature Indicating System

Oil-In Temperture Indicator

Air Temperature Indicator

Engine Thrust Indication

Measuring Power and Thrust for Turboprops

Engine Pressure Ratio Indicating System

Turbine Discharge Pressure Indicator

Engine Pressure Ratio Indicator

GLOSSARY

Abbreviations and Acronyms

Definitions

REFERENCES

AUTHORIZATION LETTER

DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.

*This publication supersedes FM 1-506, 21 December 1984.