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nasa's space shuttle program conducted

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the 52nd and final test firing of a

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reusable solid rocket motor on february

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25th in promontory utah the recyclable

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solid rocket motor is used on each space

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shuttle mission and is the largest solid

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rocket motor ever flown it's also the

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only one rated for human flight and the

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first designed for reuse the flight

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support motor or fsm-17

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burned for approximately 123 seconds the

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same time each reusable solid rocket

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motor burns during an actual space

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shuttle launch preliminary indications

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suggest that the test objectives were

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met

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at 4.5 million pounds the space shuttle

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requires the boost of two reusable solid

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rocket motors every time it takes off

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the first test was july 1977 the atk