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## PowerPoint Slideshow about ' Rocket Types' - cassandra-brady

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### Rocket Types

EGR 4347 Analysis and Design of Propulsion Systems

Rocket Propulsion

- Ideal Rocket Thrust
- Specific Impulse

RocketPropulsion

Rocket Propulsion

Rocket Propulsion Elements – Sutton and Biblarz

Rocket Propulsion

Rocket Propulsion Elements – Sutton and Biblarz

Liquid Rockets

Scientific American – March 2000

Solid Rockets

Scientific American – March 2000

Rocket Performance – Mars Mission

- Thrust – force 1 N ¼ lbf
- ExhaustSpeed – Measure of fuel efficiency
- Sample Burn Time – How long the rocket must fire to accelerate a 25-ton payload from low earth orbit to escape velocity. The time is inversely related to the thrust.
- Sample fuel ratio – fraction of the total spacecraft mass taken up by propellant. The amount of fuel is exponentially related to the exhaust speed.

Scientific American – March 2000

Hydrogen heated to 2,500 deg C

Reactors can generate electricity

Public opposition

Nuclear RocketsScientific American – March 2000

Electrical fields accelerate particles

Fuel – cesium or xenon

Cathode dumps electrons into flow at exit

Grids get in the way

IONScientific American – March 2000

ION

Rocket Propulsion Elements – Sutton and Biblarz

Hall Effect

Rocket Propulsion Elements – Sutton and Biblarz

Magnetoplasmadynamic (MPD)

- Magnetic acceleration
- Magnetic field electrically generated

Scientific American – March 2000

Radial Magnetic Field

200 times a second

No electrodes

Pulsed Inductive Thruster (PIT)Scientific American – March 2000

Variable Specific Impulse Magnetoplasma Rocket

Radio waves heat fuel

Ionized propellant (Hydrogen)

Magnetic fields

VASIMRScientific American – March 2000

Solar Sails

- 9 N per square km
- Large fragile structure
- NASA working on Magnetic “sail” to catch sun particles

Scientific American – March 2000

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