Diffusivity Measurement of DMAZ in Air and Determining Minimum Storage Radius

Due to physico-chemical and performance properties of dimethyl amino ethyl azide (DMAZ), it is a good replacement liquid fuel for hydrazine group in space industries. After production of the fuel, it’s storage is a main parameter. It is necessary to determine the storage radius of the fuel for operators’ safety in storing zoon because of probable leakage. Calculating the storage radius of the fuel needs to diffusivity data of DMAZ in air. In this article, first of all, storage radius will be derived in general case according to the basic equation of mass transfer equation. Then, diffusivity of the fuel in air will be measured on the basis of Stefan tube method at atmospheric pressure. Storage radius of the fuel will be determined at different temperatures. At atmospheric pressure, results showed that the storage radius is 2.9 m, 3.2m, 3.7m and 4.2m with respect to temperatures of 15.95oC, 25.05oC, 39.45oC and 60.05oC.