Comparison of Jet Fuels by Measurements of Density and Speed of Sound of a Flightline JP-8

The density of a flightline jet fuel (JP-8) was measured with two vibrating-tube densimeters. The combined range of the data is from 270 to 470 K with pressures of 40 MPa. The speed of sound in the fuel was measured with a propagation time method at ambient pressure from 278.15 to 343.15 K. The density and speed of sound results at ambient pressure were combined to obtain the adiabatic compressibility. A correlation is reported that represents the temperature and pressure dependence of the experimental data within their estimated uncertainties and can be extrapolated meaningfully beyond the pressure range of the data. The data from this jet fuel are compared to those of four previously measured jet fuels to examine the differences in their densities and speeds of sound.