1.

Technical Paper
Technical Paper
1. ORBITAL TRANSFER VEHICLE ENGINE INTEGRATION STUDY Final Report
Ketchum, W.J.
Pub. info.: NASA Technical Reports.  (NASA-CR-174842),  pp.1-51,  1984.  National Aeronautics and Space Administration
2.

Technical Paper
Technical Paper
2. ORBITAL TRANSFER VEHICLE CONCEPT DEFINITION AND SYSTEM ANALYSIS STUDY. VOLUME 1A: EXECUTIVE SUMMARY. PHASE 2
Ketchum, W.J.
Pub. info.: NASA Technical Reports.  (NASA-CR-179055),  pp.1-55,  1986.  National Aeronautics and Space Administration