This document provides an overview of different types of jet engines, including turbojet, turbofan, turboprop, ramjet, scramjet, and pulse jet engines. It explains that jet engines have both civilian and military uses. For each type of jet engine, it gives a brief description of its components and purpose, such as that turbojets are used in aircraft and missiles, turboprops have better fuel efficiency than turbojets, and scramjets can operate at extremely high speeds.

2. Jet engines have a major role in
modern means of transport. Jet
engines have numerous applications.
Most importantly, they used in the
aircrafts, rockets, missiles etc. They
have both civilian and military use.
There are various types of jet engines.
This presentation will impart some
basic knowledge about the jet engine
and its types.

3. TYPES OF JET ENGINES:
Jet engines are of different types.
Some of them are listed below.
• Turbojet
• Turbofan
• Turboprop
• Ramjet
• Scramjet
• Pulse jet

4. TURBOJET:
The turbojet engine is usually
used in aircrafts. It consists of a gas
turbine with a propelling nozzle. The gas
turbine has an air inlet, a compressor, a
combustion chamber, and a turbine(that
drives the compressor). They are
relatively simple compared to other
engines and are used in missiles.

5. The compressed air from the
compressor is heated by the fuel in the
combustion chamber and then allowed to
expand through the turbine. The turbine
exhaust is then expanded in the
propelling nozzle where it is accelerated
to high speed to provide thrust. Turbojets
have been replaced in slower aircraft
by turboprops because they have
better range-specific fuel consumption.

7. TURBOFAN ENGINE:
The turbofan is an airbreathing jet
engine widely used in aircraft propulsion. It
is a gas turbine engine which achieves
mechanical energy
from combustion with a ducted fan that
uses the mechanical energy from the gas
turbine to accelerate air rearwards. It is
replacing turbojet in slow moving aircrafts
as it consumes relatively less fuel.

9. TURBOPROP ENGINE:
A turboprop engine is a gas turbine
engine that drives an aircraft propeller. The
turboprop engine uses most of its power to
drive the propeller and thus the engine’s
exhaust does not create enough thrust for
propulsion. Thus the turboprop engine,
unlike other engines, does not use thrust
from the exhaust for propulsion.

11. RAMJET:
The ramjet is an airbreathing engine
using ram air intake. A ram air intake is
any intake design which uses the dynamic
air pressure created by vehicle motion to
increase the static air pressure inside of
the intake manifold, thus allowing a
greater massflow through the engine and
hence increasing engine power. It is used
mainly in missiles. Its efficiency is more at
mach 3.

13. SCRAMJET:
A scramjet (supersonic combusting
ramjet) is an airbreathing jet engine in which
combustion takes place in supersonic
airflow. It relies on high vehicle speed to
forcefully compress the incoming air before
combustion as in a ramjet, but a ramjet
decelerates the air to subsonic velocities
before combustion, while airflow in a
scramjet is supersonic throughout the entire
engine. This allows the scramjet to operate
efficiently at extremely high speeds.

15. PULSE JET ENGINE:
A pulsejet engine is a type of jet
engine in which combustion occurs
in pulses. A pulsejet engine can be made
with few or no moving parts, and is capable
of running statically and it does not need to
have air forced into its inlet typically by
forward motion. It is of two types - Valved
pulsejet engine and Valveless pulsejet
engine.

16. ALL CREDITS TO THE RESPECTIVE OWNERS