Prof Dava Newman 16.423J/HST515J Space Biomedical Er ng and Life Support Magnum Launch vehicle 92ft cyl x 25 ft I.D. Payload/ Stage Fwd Booster attach NTR Stage and aerobraked Mars payloadProf. Dava Newman 16.423J/HST515J Space Biomedical Engineering and Life Support / Magnum Launch Vehicle Liquid Flyback Booster (2) Payload Fairing 92 ft cyl x 25 ft I.D. Circularization Stage LO2 Tank LH2 Tank RS 68 Engines (2) Payload Stage Adapter Fwd Booster Attach Aft Booster Attach Thrust Structure NTR stage and aerobraked Mars payload 7