NASA's Rotary Engine Technology Enablement Program -- 1983 Through 1991

This paper provides a brief review of NASA's Rotary Engine Technology Enablement Program from 1983 through 1991, with primary emphasis on the CFD or Computational Fluid Dynamics approaches used since 1987. The main discussion includes both code development and applications to several particularly difficult internal airflow, fuel-air mixing and combustion-related problems. A summary of the final status of the technology is given.