Chapter 2: Basic Engine Construction

CHAPTER TWO

BASIC ENGINE CONSTRUCTION

200.

INTRODUCTION

As student aviators, it is necessary for you to become familiar with the PT6A-25 basic engine

construction. You must also become familiar with the location and operation of various

components of the engine for a better understanding of how the engine performs.

201.

LESSON TOPIC LEARNING OBJECTIVES

Terminal Objective

2.0

Upon completion of this chapter, the student will demonstrate knowledge of the PT6A-25

engine's basic construction.

Enabling Objectives

2.1

State the type and shaft horsepower of the PT6A-25 engine.

2.2

State the purposes of the engine.

2.3

Describe the compressor section of the engine.

2.4

Explain the characteristics of the combustion section of the engine.

2.5

Describe the characteristics of the turbine section of the engine.

2.6

Describe the exhaust section of the engine.

2.7

State the purpose and location of the accessory gearbox on the engine.

2.8

Explain the operation of the engine.

BASIC ENGINE CONSTRUCTION

2-1