SHUTTLE STUDIES PHASE“ A STUDIES WERE CONDUCTED TO DETERMINE BASIC REQUIREMENTS AND THEIR EFFECT ON DESIGN N 1969 PRINCIPAL ISSUES SIZE AND WEIGHT OF PAYLOAD CROSS RANGE OF THE ORBITER HEAT-RESISTANT STRUCTURE OR REUSABLE INSULATING MATERIALSHUTTLE STUDIES • PHASE “A” STUDIES WERE CONDUCTED TO DETERMINE BASIC REQUIREMENTS AND THEIR EFFECT ON DESIGN IN 1969 • PRINCIPAL ISSUES: – SIZE AND WEIGHT OF PAYLOAD – CROSS RANGE OF THE ORBITER – HEAT-RESISTANT STRUCTURE OR REUSABLE INSULATING MATERIAL 3