Investigation on the Performance Characteristics of Two Valveless Pulse Jets Operating in Phase Opposition

<p>The investigation was suggested by an earlier investigation done on a single valveless pulse jet engine at the University of North Dakota by Roger W. Engebretson. It was thought that if two of these engines could be coupled in such a manner that they would fire alternatively, the performance per engine could be improved. A literature search indicated that, while valved pulse jets had been successfully operated in the described manner, no one had previously operated two valveless pulse jet engines in phase opposition.</p><p>The objective of this project was to design a device for coupling two of these engines as prescribed above and to investigate the performance characteristics of the coupled engines.</p><p>As a result of this project, two valveless pulse jet engines have been successfully operated in a coupled manner and through the use of high speed photography, it was established that the engines were firing alternatively. The total thrust per engine and the total-thrust specific fuel consumption for the coupled engines were inferior to the respective values for Engebretson’s single engine. However, indications are that coupled engines have a potential for improvement through further research. In the thesis, six suggestions for further research projects are advanced.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical Engineering

Year

1966

Author dc:creator

• Moen, Donald A.

Repository record dc:identifier

https://commons.und.edu/theses/593

OAI identifier oai:identifier

oai:commons.und.edu:theses-1593