Experimental and computational evaluation of transient behavior of a typical satellite monopropellant propulsion system

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Makina Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2014

Öğrenci: AYŞEGÜL TARÇIN ÇİLLİ

Danışman: MEHMET HALUK AKSEL

Özet:

In this study, a typical satellite monopropellant propulsion system is numerically modeled by using a commercial software and analyses are conducted regarding the priming operation of satellite propulsion system. Analyses are performed for different tank pressures, downstream line pressures, distance between the tank and orifice, distance between the orifice and latch valve, distance between the latch valve and exit valve, orifice diameter and pipe diameters. Moreover, a test setup is constructed and tests are performed in order to create a database on water hammer phenomena under the same conditions with the ones faced in satellite propulsion system during priming. In the tests, different tank pressures, downstream line pressures, downstream line lengths and orifice diameters are used. Maximum pressure, frequency of flow and transient flow duration are the parameters compared.