I am not a techie, but have an interest in the specific case of refuelling a large Twin Turboprop I fly on quite regularly. The aircraft uses F34 (JP-8), which can have a range of acceptable SGs from 0.775 to 0.840 at 15°C(according to NATO docs anyway).
Of course fuel is rarely delivered at 15°C, and I would be interested to know how the SG varies with temperature. I believe it varies inversely to the temperature, but am not sure whether there is a constant factor (which I doubt), or whether the relationship is non-linear.
Could someone please point me in the direction of tables (or a graph perhaps) so that I can establish what the correct position is?
Thanks
STH