David R. Cramer

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Thermoplastic advanced composites are a rapidly growing field of advanced materials. Comprising reinforcing fibers embedded in a matrix of thermoplastic resin, these materials offer high specific strength and stiffness and low density. In addition, thermoplastics' high toughness makes their use appealing in applications that require energy absorption and(More)
Spacelab is a large versatile laboratory carried in the bay of the Shuttle Orbiter. The first Spacelab mission dedicated entirely to Life Sciences is known as Spacelab 4. It is scheduled for launch in late 1985 and will remain aloft for seven days. This payload consists of 25 tentatively selected investigations combined into a comprehensive integrated(More)
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