CONTENTS

INTRODUCTION. HISTORY DESIGN OF ENGINE COMPONENTS WORKING OF ENGINE PRINCIPLE OF

OPERATION MERITS AND

DEMERITS. APPLICATIONS

Turbojet Engine

A jet engine having a turbine-driven compressor and developing thrust from

the exhaust of hot gases.

HEINKEL HE-First practical

Aircraft to use TURBOJET

POWER-1938

MESSERSCHMITT ME GLOSTER METEOR

First two operational Aircrafts to use TURBO POWER-1944

• TURBINE• NOZZLE

• INLET • COMPRESSORS• COMBUSTION CHAMBER

INLETS COMPRESSORS

COMBUSTION CHAMBER TURBINE NOZZLE

This high pressure is utilized to produce more thrust for high speed TURBOJETS

Kinetic Energy Pressurized Air

Working of a TURBOJET ENGINE

Ideal Brayton cycle comprise of the following Thermodynamics Processes:Isentropic Compression Process. Isobaric Heat Addition Process. Isentropic Expansion Process. Isobaric Heat Rejection Process.

BRAYTON CYCLE

Very high power-to-weight ratio.

Compact than most reciprocating engines of the same power rating.

Fewer moving parts than reciprocating engines.

Low operating pressures.

High operation speeds.

Low lubricating oil cost and consumption.

7 CYLINDER BMW 801 AIRCRAFT ENGINE

Cost

Longer startup than reciprocating engines

Less responsive to changes in power demand compared to reciprocating engines.

Poor takeoff characteristics at low speeds

At low speeds the fuel consumption is more

Turbojet engines had a significant impact on commercial aviation.

British engines such as the Rolls-Royce Welland used better materials giving improved durability.

Jet engines have propelled high speed cars, particularly drag racers, with the all-time record held by a rocket car.