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Clark, H. J.

Publications and source records attributed to Clark, H. J..

Shuttle/Centaur Upper Stage Capability

A joint project to design, develop, procure, and produce Centaur upper stages for use with the Space Shuttle is discussed. A common Centaur G stage 6 meters (19.5 feet) in length is being jointly developed. A longer version designated Centaur G Prime is being developed by NASA to accomplish the Galileo and International Solar-Polar Mission flights in 1986. The Centaur G and G Prime will have the capability to place, respectively, approximately 4540 kilograms (10,000 pounds) and 5910 kilograms (13,000 pounds) into geosynchronous orbit from a standard Shuttle parking orbit of 278 kilometers (150 nautical miles) and Shuttle performance (lift) capability 29,500 kilograms (65,000 pounds). The advent of high energy upper stage capability in 1986 will permit space users and spacecraft developers to utilize spacecraft growth, stage combination concepts with storage modules, teleoperator systems, and other mission peculiar devices to satisfy complex mission demands. These capabilities should greatly enhance the usefulness of the space environment and stimulate mission planners toward conception of innovative means to meet ever increasing mission requirements.

Clark, H. J.

New directions in the NASA program

This paper reports on the current activities of the U.S. National Aeronautics and Space Administration (NASA), and discusses several new directions in NASA's program. The Space Transportation System (STS) is operational and is now performing a wide variety of missions, including repair of spacecraft on orbit. A family of upper stages are available for missions requiring higher energy than the Shuttle alone can provide. With routine access to space assured by the STS, the U.S. is ready to take its next logical step into space with development of a permanently manned Space Station. In addition, NASA is supporting a program for increased commercial development of space through a government-industry partnership.

Sakss, U. J.

Shuttle upper stage family with emphasis on Shuttle/Centaur program objectives

The history of the Space Shuttle upper stages is reviewed, giving some of the characteristics of the stages themselves. The Shuttle/Centaur, a high-energy cryogenic upper stage being developed for the Galileo and International Solar Power missions, is emphasized. Its basic configuration, mission characteristics, and physical relation to the Shuttle are described.

Clark, H. J.