ALL ABOUT ROCKETS by S K Das & K. Radhakrishnan

Author:S K Das & K. Radhakrishnan
Language: eng
Format: epub
ISBN: 9780143331308
Publisher: Penguin Books Ltd
Published: 2010-11-15T00:00:00+00:00

When we watch movies based on science fiction, we see rockets in space with wings and fins. These are not exactly based on scientific principles. The main thing to understand is that without air, fins and canards have nothing to work upon.

When a rocket is in space, it can be stabilized only by spinning the rocket along the roll axis or by using active controls involving the engine exhaust. The most common kind of control used in space is the attitude-control rocket. Small clusters of engines are mounted all around the launch vehicle. By firing the right combination of these small rockets, the vehicle can be turned in any direction. As soon as they are aimed properly, the main engines fire, sending the rocket off in the new direction.

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