Title

Dynamic Thrust Testing For Scale Model Engines With Computer Data Acquisition

Abstract

The following discussion presents the modernization of a measurement method, based on the force balance concept, for measuring dynamic thrust of a scale engine/propeller combination. This new method is based on computerized data acquisition in a controlled laboratory environment, as opposed to previous common methods prone to errors due to hysteresis, friction, and airspeed determlnatlon in an uncontrolled environment. The modernized method was implemented in a system consisting of a wind tunnel test section with an instrumented beam connected to a computer data acquisition system, A data set obtained with the new method was compared to a sb&ar data set obtained using a crude, older method. The results of the comparison demonstrated the modern method's superior reliability and convenience. The laboratory environment ensured safety, reproducibility of test conditions, and provided convenience, while the Instrumented beam offers simplicity and the practical elimination of hysteresis effects. In addition, the computerized data acquisition provides accuracy, tIexibiIity, expandability and advanced result postprocessing capabilities. The modernized method proves to be a detlnite solution for dynamic thrust measurement and continues to be used by students in studies such as a propeller comparison experiment, resulting in positive propeller suggestions for use in collegiate aircraft design competitions. © 1999 by Carlos M. Figueroa.

Publication Date

1-1-2000

Publication Title

38th Aerospace Sciences Meeting and Exhibit

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2000-5

Socpus ID

85088720835 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85088720835

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