Rocket types
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Rocket Types. EGR 4347 Analysis and Design of Propulsion Systems. Rocket Propulsion. Ideal Rocket Thrust Specific Impulse. Rocket Propulsion. Rocket Propulsion. Rocket Propulsion Elements – Sutton and Biblarz. Rocket Propulsion. Rocket Propulsion Elements – Sutton and Biblarz.

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Rocket Types

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Rocket types

Rocket Types

EGR 4347 Analysis and Design of Propulsion Systems


Rocket propulsion

Rocket Propulsion

  • Ideal Rocket Thrust

  • Specific Impulse


Rocket propulsion1

RocketPropulsion


Rocket propulsion2

Rocket Propulsion

Rocket Propulsion Elements – Sutton and Biblarz


Rocket propulsion3

Rocket Propulsion

Rocket Propulsion Elements – Sutton and Biblarz


Rocket propulsion4

Rocket Propulsion


Chemical rockets

Chemical Rockets

  • Liquid – typical O2 and H2

  • Solid

Scientific American – March 2000


Liquid rockets

Liquid Rockets

Scientific American – March 2000


Solid rockets

Solid Rockets

Scientific American – March 2000


Solid rockets1

Solid Rockets


Rocket performance mars mission

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


Rocket performance

Rocket Performance


Nuclear rockets

Tested in 1960s

Hydrogen heated to 2,500 deg C

Reactors can generate electricity

Public opposition

Nuclear Rockets

Scientific American – March 2000


Rocket performance1

Rocket Performance


Rocket types

1950s

Electrical fields accelerate particles

Fuel – cesium or xenon

Cathode dumps electrons into flow at exit

Grids get in the way

ION

Scientific American – March 2000


Rocket types

ION

Rocket Propulsion Elements – Sutton and Biblarz


Rocket performance2

Rocket Performance


Hall effect

1970s Russia

Radial Magnetic Field

Xenon

No grids

Hall Effect

Scientific American – March 2000


Hall effect1

Hall Effect

Rocket Propulsion Elements – Sutton and Biblarz


Rocket performance3

Rocket Performance


Magnetoplasmadynamic mpd

Magnetoplasmadynamic (MPD)

  • Magnetic acceleration

  • Magnetic field electrically generated

Scientific American – March 2000


Rocket performance4

Rocket Performance


Pulsed inductive thruster pit

Argon Fuel

Radial Magnetic Field

200 times a second

No electrodes

Pulsed Inductive Thruster (PIT)

Scientific American – March 2000


Rocket performance5

Rocket Performance


Vasimr

Variable Specific Impulse Magnetoplasma Rocket

Radio waves heat fuel

Ionized propellant (Hydrogen)

Magnetic fields

VASIMR

Scientific American – March 2000


Vasimr1

VASIMR


Rocket performance6

Rocket Performance


Solar sails

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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