SHUTTLE STUDIES PHASE“B” STUDIES WERE PERFORMED|N MID 1970S TO DETERMINE A PRELIMINARY DESIGN RESULTS FULLY RECOVERABLE ORBITER DISPOSABLE FUEL TANK PARACHUTE-RECOVERABLE SOLID ROCKET BOOSTERS HIGH PERFORMANCE HYDROGEN-OXYGEN ENGINES PLACED IN THE ORBITER TO BE RECO∨EREDSHUTTLE STUDIES • PHASE “B” STUDIES WERE PERFORMED IN MID 1970’S TO DETERMINE A PRELIMINARY DESIGN • R E S U L T S: – FULLY RECOVERABLE ORBITER – DISPOSABLE FUEL TANK – PARACHUTE-RECOVERABLE SOLID ROCKET BOOSTERS – HIGH PERFORMANCE HYDROGEN-OXYGEN ENGINES PLACED IN THE ORBITER TO BE RECOVERED 6