Dynamic viscosity measurements of aviation hydrocarbon fuel RP-3 at sub-critical pressures

A new experimental method and apparatus were developed for the measurements of dynamic viscosity of fluids under high temperature and high pressure conditions based on classical capillary tube method. This method has an uncertainty of 1.009% according to the error analysis. Validation experiments were performed to measure the viscosity of distilled water (2 MPa, 290-400 K). The test results demonstrate that the average absolute deviation (AAD) is below 0.715%, and the maximum absolute deviation (MAD) is 2.3%. And then the dynamic viscosity of aviation kerosene RP-3 was measured under 298-755 K and 0.1-2 MPa. This method can be applied to any homogeneous Newtonian fluids.