Accession Number:

ADA021415

Title:

Centaur Interim Upper Stage (IUS) System Study. Volume II. Technical.

Descriptive Note:

Final rept. 1 Oct 74-1 Jul 75,

Corporate Author:

GENERAL DYNAMICS/CONVAIR SAN DIEGO CALIF

Personal Author(s):

• Heald,D. A.
• Nelson,A. W.
• Harris,R. D.
• Peters,C. F.

Report Date:

1975-07-31

Pagination or Media Count:

455.0

Abstract:

The IUS programs defined in the study incorporate a primary propulsive stage based on the existing D-1 Centaur vehicle used by NASA for Viking and by DoD for FleetSatComm. The study concludes that lowest development costs are incurred with an expendable Centaur IUS which is 89 percent existing hardware. The principal development tasks for this program would be modifications for compatibility with the Orbiter and SGLSSTDN communications. Lowest life cycle costs can be achieved with a reusable Centaur IUS where added development is required for a wide hydrogen tank and a fuel cell power supply. Trade studies and options including shorter length vehicles and compatibility with NASA planned Tracking and Data Relay Satellite TDRSS system are also defined. The inherent high performance of cryogenic propellants assures comfortable accommodation of current and future IUS program requirements.

Descriptors:

• *MANAGEMENT PLANNING AND CONTROL
• *SPACE SHUTTLES
• *SPACE TRANSPORTATION
• *SPACE TUGS
• LOGISTICS MANAGEMENT
• MISSION PROFILES
• LIQUID PROPELLANT ROCKET ENGINES
• LIFE CYCLE COSTS
• GROUND SUPPORT EQUIPMENT
• CONFIGURATION MANAGEMENT
• LAUNCH VEHICLES

Subject Categories:

• Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE