سال انتشار: ۱۳۸۹

محل انتشار: همایش ملی آشنایی با فناوریهای روز در زمینه مهندسی مکانیک

تعداد صفحات: ۵

نویسنده(ها):

Ali R. Tahavvo – Assistant Professor, Mechanical Eng. Department, Islamic Azad University, Shiraz Branch, Shiraz
A. Hosainpour – M.Sc. student of Mechanical Engineering, Mechanical Eng. Department, Islamic Azad University, Shiraz Branch

چکیده:

Testing is performed on the 450 centimeter pulsejet engine in order To develop, study, and explore the operational characteristics. Valve less operation, propane fuel, and a range of geometric configurations are investigated for operational feasibility. The scaling capabilities of a valve less 450 centimeter class pulsejet of conventional design are studied by methodically varying inlet length, exit length, exit geometry, and inlet area to combustor area ratio (Ai/Ac). Engine performance is defined by measuring chamber pressure ,internal gas temperatures, time-resolved thrust, and fuel flow rate. The scaling capability is characterized by the success of self-sustained combustion for each corresponding geometric configuration. Tail pipe length is found to be a function of valve less inlet length and may be further minimized by the addition of a diverging exit nozzle. Chemical kinetic times and Ai/Ac prove to be the two prominent controlling parameters in determining scaling behavior. range of geometric configurations of this engine are a combustion chamber white. 10.8 centimeterr,5 centimeter inlet diameter ,and 12cm exit diameter.