Careers in Rocketry - Research Article from Macmillan Science Library: Space Sciences

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Rocket Development

Professionals in the field of rocketry work on two general types of rockets: liquid propellant and solid propellant. Each type has applications where it is best suited. A third type, called a hybrid, combines a solid fuel with a liquid oxidizer. At the beginning of the twenty-first century, hybrids were in early development by the National Aeronautics and Space Administration (NASA).

Liquid propellant rockets are generally preferred for space launches because of their flexibility of operation and better performance. For instance, the engines can be shut off and restarted, and the thrust can be throttled. On the other hand, solid propellant rockets have some tactical advantages. They do not require propellant loading on the launch pad, and they can be stored for long periods. Liquid propellant and solid propellant rockets can be used jointly to advantage in such cases as the Space Transportation System, better...

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This section contains 1,273 words
(approx. 5 pages at 300 words per page)
Buy the Careers in Rocketry Encyclopedia Article
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Macmillan Science Library: Space Sciences
Careers in Rocketry from Macmillan Science Library: Space Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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