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A small-scale model of Sierra Nevada Corporation's
Dream Chaser spacecraft was put to the test

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recently in one of the historic wind tunnels
at NASA's Langley Research Center in Virginia.

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Engineers carefully glued 250 individual grains
of sand in place on the 22-inch-long model

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to simulate turbulence.

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Mounted on an arm that does not interfere
with airflow, the Dream Chaser model was subjected

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to high speed wind flow that simulates the
conditions the spacecraft will encounter during

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its return from space and glide to a runway
on Earth .

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Engineers outfitted the Dream Chaser with
hundreds of sensors to gather the smallest

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detail about airflow around the lifting body.

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Designers will use the results to confirm
their expectations, make modifications to

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the spacecraft and adjust computer models.

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The six-week-long testing is the latest in
the development of the spacecraft as the company