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HAVE REGION

As NASP began to build up steam for its air-breathing work, in the late 1980s the SCIENCE REALM effort was followed by the HAVE REGION program, to complement ongoing air-breathing work in the NASP program. Under HAVE REGION, prototype lightweight structures were fabricated with with 1970s-era materials, primarily exotic metals, to evaluate near-term flight readiness. Although the results were generally promising [within 3% of the specified weights], it was concluded that the simpler graphite-epoxy composites and aluminum-lithium alloys materials developed by NASP would be more promising.