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SCIENCE DAWN

SCIENCE DAWN was a classified program, based on a 1982 Boeing proposal, to build a sled-launched horizontal-takeoff / horizontal-landing [HTHL] single stage to orbit [SSTO] launch vehicle. However, by 1986 it became clear that horizontal takeoff requirement was an inappropriate application of rocket thrust-to-weight ratio, which was better applied to vertical takeoff. Consequently, SCIENCE DAWN ended, and the focus transferred to SCIENCE REALM.

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Updated Wednesday, April 16, 1997