Abstract
Ramjet propulsion systems evolved into a modern era starting in the mid 1960's with the advent of the integral rocket ramjet concept. At least 10 different liquid-fueled ramjet propulsion arrangements for potential missile applications have been evaluated in ground testing during this period, with three concepts having proceeded through flight testing. This paper identifies some of the problems and pitfalls discovered during those development programs. An overview is given of the various types of ramjet propulsion systems that have been evaluated in test programs. The various ramjet testing techniques are summarized along with major difficulties that have been encountered. Recommendations are made for essential hardware arrangements and test procedures needed to evaluate performance characteristics properly. A comparison is made of the different categories of propulsion arrangements which shows how preferred testing programs may vary among the different types of configurations.
Published Version
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