Download Future Spacecraft Propulsion Systems: Enabling Technologies by Paul A. Czysz PDF

By Paul A. Czysz

In Future Spacecraft Propulsion Systems the authors exhibit the necessity to become independent from from the outdated verified ideas of expendable rockets, utilizing chemical propulsion, and to advance new breeds of release motor vehicle in a position to either launching payloads into orbit at dramatically decreased rate, and for sustained operations in low-Earth orbit. the subsequent steps, they clarify, to developing an enduring "presence" within the sun approach past Earth are the commercialisation of sustained operations at the Moon, and the advance of complicated nuclear or high-energy area propulsion structures for sun approach exploration out to the boundary of interstellar house. sooner or later, high-energy particle examine amenities might at some point yield a truly high-energy propulsion procedure that might take us to the close by stars, or perhaps past. this can be a well timed and accomplished publication, placing spacecraft propulsion structures in perspective.

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Additional resources for Future Spacecraft Propulsion Systems: Enabling Technologies for Space Exploration (2006) (Springer Praxis Books Astronautical Engineering)

Example text

Numbers 2, 10 and 11. All of the spacecraft are delta planforms, except for Harry Stine's horizontal takeo€ and landing concept, number 3. Con®gurations 5, 7 and 9 are two-stage-to-orbit (TSTO) concepts that are very similar. The German `Saenger' con®guration (7) by MBB employs a hypersonic glider that carries onboard the propellant necessary to achieve orbit, maneuver and return. Lozinski (5) and Dassault (9) both have a di€erent philosophy from MBB with respect to the propellant to reach orbit.

S. and European advanced systems are indicated. From a talk given by Dr Oleg A. 5 with the approximate year of availability. The speci®c impulse required to reach 1% of light speed is at least two orders of magnitude greater than our expected advanced systems. , four orders of magnitude greater than our expected advanced systems. That means achieving speci®c impulses of the order of one to ten million seconds. 8 to 98 Mega-Newtons). We have yet to speak of superluminal speeds, that is, traveling faster than light speed, but superluminal speed cannot be achieved until at least light speed is achieved.

A modest performance combined-cycle airbreather that transitions to rocket at about Mach 12 has the same empty weight with payload installed, but a gross weight in the 200,000 to 225,000 kg range. The engine thrust for a vertical takeo€ is about 2,650 kilonewtons to 2,980 kilonewtons. Most of the gross weight reduction is from the lesser amount of oxidizer carried and the lighter propulsion system weight. So the installed thrust is about one-half, and the volume is less. An advanced airbreathing system has the potential to reduce the gross weight to the 125,000 to 150,000 kg level (the attributes of di€erent propulsion systems and their impact on size and weight are discussed in Chapter 4).

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