This document discusses the design and operation of a turbojet engine. It begins with an introduction and history, describing the first aircraft to use turbojet engines in the late 1930s and 1940s. The main components of a turbojet engine are then outlined, including the compressor, combustion chamber, turbine, and nozzle. The document explains that the turbine drives the compressor and thrust is produced by exhaust gases. It provides details on the Brayton cycle and discusses advantages like high power-to-weight ratio but also disadvantages such as high fuel consumption at low speeds. Applications mentioned include commercial aviation and use in high speed vehicles.

2. CONTENTS
 INTRODUCTION.
 HISTORY
 DESIGN OF ENGINE
 COMPONENTS
 WORKING OF ENGINE
 PRINCIPLE OF
OPERATION
 MERITS AND
DEMERITS.
 APPLICATIONS

3. Turbojet Engine
A jet engine having a turbine-
driven compressor and developing thrust from
the exhaust of hot gases.

4. HEINKEL HE-First practical
Aircraft to use TURBOJET
POWER-1938
MESSERSCHMITT ME GLOSTER METEOR
First two operational Aircrafts to use TURBO POWER-1944

5. • TURBINE
• NOZZLE
• INLET
• COMPRESSORS
• COMBUSTION CHAMBER

6. INLETS COMPRESSORS
COMBUSTION CHAMBER TURBINE NOZZLE

7. This high pressure is utilized to produce
more thrust for high speed TURBOJETS
Kinetic Energy Pressurized Air

8. Working of a TURBOJET
ENGINE

9. 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

10.  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

11.  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

12.  Turbojet engines had a significant impact
on commercial aviation.

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

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