S.1 Spacecraft Propulsion Systems Chapter 1: Introduction to ...

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Earth shadow - 20 - Schematic of Solar Sail Position during one Earth Orbit Earth Acceleration phase Limit of Earth atmosphere influence 180 deg Manoeuvre Drift phase Solar flux
- 21 - Exotic Propulsion Methods: Antimatter and Photon Propulsion “I have learned to use the word ‘impossible’ with the greatest caution.” Wernher von Braun Exotic Propulsion Systems are those “far out” ideas still under study. They will be required for the ultimate dream of space exploration to travel to other star systems, as depicted in TV shows like ‘Star trek’. Two examples of such exotic propulsion systems are outlined below. Antimatter Propulsion: Matter- antimatter annihilation offers the highest possible physical energy density of any known reaction substance. Since matter and antimatter annihilate each other completely, it is an incredibly compact way of storing energy. E.g. a round trip to Mars with a 100-ton payload might require only 30 gram of antimatter. However, sufficient production and storage of antimatter (with potential complex and high storage system mass) is still very much in the future. Photon Propulsion: The generation of usable thrust by ejection of photons is still very hypothetic. The generation of photons by e.g. laser technology and their subsequent decay in space, involves the mass-energy transfer expressed by Einstein’s equation, E = mc 2 . Consequently, very large quantities of energy will be required even for nominal levels of thrust. Possibly, matter-antimatter annihilation can be harnessed for photon propulsion in the future.
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S.3 Need of Propulsion Propulsion i
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Orbit control ORBIT CONTROL compris
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S.4 Reaction-Control System - 7- Th
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Solar Sails - 9-
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S.5 Jet Propulsion System - 11- The
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S.6 Spacecraft Propulsion - 13- Spa
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Nuclear propulsion Note - 17- SCHEM
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S.3 Basic Equation of Thrust - 3- B
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S.4 Basic Rocket Equation Total Vel
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Test - 9-
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Rocket propulsion device basic part
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Kinetic energy in the expelled mass
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Chemical Propulsion Systems - 5- Ch
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S.4 Cold and Hot Gas Systems - 7- C
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Cold Gas Systems (Operate) - 9- Col
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Typical System - 11-
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Advantages Simplicity and reliabili
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Liquid Propellants - 17- Characteri
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S.6 Liquid Propellant Systems - 19-
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Monopropellant Systems (Operate) -
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Diaphragm Tank - 27-
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Advantages Simplicity and reliabili
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Bipropellant Systems (Operate) - 31
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Page 125: Literature - 23 - Wiley J. Larsson
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S.1 Spacecraft Propulsion Systems Chapter 1: Introduction to ...

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