Use of Choked Nozzle Technique and Exhaust Jet Diffuser for Extending Operable Range of Jet-Engine Research Facilities ; NACA Research Memorandums

Memorandum presenting an investigation to determine the increase in the useful ranges of flight conditions that may be obtained with a given jet-engine research facility when the choked nozzle technique or the exhaust jet diffuser, or both, are employed. The report describes the two methods, the considerations involved in their application, and typical results of their use as well as confirmation of the accuracy of data obtained by utilization of these techniques.