This document discusses electric rocket propulsion systems. It describes how electric rockets use electrical energy rather than chemical reactions to provide thrust. There are several types of electric propulsion, including ion/plasma drives, electrostatic drives, electrothermal drives, and electromagnetic drives. Each type accelerates charged particles in different ways using electric and magnetic fields to generate thrust. While electric propulsion provides weaker thrust than chemical rockets, it can maintain a low thrust for extended durations, making it useful for satellite propulsion applications.

1. DEPARTMENT OF
AERONAUTICAL ENGINEERING

2. ELECTRIC ROCKET
PROPULSION
• Prepared by
Group E

3. Principle Of Rocket
• Newton's Third Law
The System Which
Is Used Launch The
Satellite In The Earth
Orbit Is Known As
Rockets.

4. Introduction Of Electric Rocket
Propulsion
• An electrically powered
rocket propulsion system
uses electrical energy to
change the velocity of a
rocket.
• It uses the electrical
energy like batteries,
electric current and
nuclear power for ignition
and for thrust required.

5. Introduction
• Due to limited electric
power the thrust is
much weaker
compared to chemical
rockets, but electric
propulsion can provide
a small thrust for a long
time. Russian satellites
have used electric
propulsion for decade.

6. Electric Rocket Propulsion
• The idea of electric propulsion for spacecraft
dates back to 1906.
• The first in-space demonstration of electric
propulsion was an ion engine carried on board
the SERT-1 (Space Electric Rocket Test)
spacecraft, launched on 20 July 1964

7. Types of electric propulsion
• Ion/plasma drives
• Electrostatic
• Electro thermal
• Electromagnetic

8. Ion/plasma drives
• This type of
rocket-like
reaction engine
uses electric
energy to obtain
thrust from
propellant
carried with the
vehicle.

9. Electrostatic
• If the
acceleration is
caused mainly
by the
Coulomb
force
• It uses
electrostatic
principle

10. Electro Thermal
• where
electromagnetic
fields are used to
generate a plasma
to increase the
temperature of the
bulk propellant.

11. Electro Thermal
• The propellant is heated by electrically with
the help of heat resistors and electric arcs
• The thermal energy imparted to the
propellant gas is then converted into kinetic
energy by a nozzle of either solid material or
magnetic fields.

12. Electromagnetic
• If ions are accelerated
either by the Lorentz
force or by the effect
of an electromagnetic
fields where the
electric field is not in
the direction of the
acceleration, the
device is considered
electromagnetic.

14. Electric Propulsion Accelerators
Electro
thermal
Electrostatic Electro
magnetic
Acceleration
force
Electrically
heat propellant
and use nozzle
expansion
Magnetic and
electric fields
accelerate
charged
particles
Static electric
field alone
accelerates
charged
particles
Isp(s) 300-1500 1000-10000 2000-100000+
Thrust/weight <1/1000 <1/10000 <1/100000

15. Applications
• Used as launch vehicle
• Used in space crafts
• Used in missile and other application such as
vernier rockets, spin rockets, signal rockets
etc.…

17. THANK YOU
–BY
Group E