Analytic fuel model (25th September 2014, updated 3rd March 2015.) See the ‘fuel model’ worksheet in the main aqqa path model for the coefficients.
ECEF velocity vector (27th September 2014). Derivation of the velocity vector in the earth-centred earth-fixed frame.
BTO-arc function (July 2014, revised version of 20th February 2015). Derivation of a function mapping latitude, aeroplane-satellite range, and aeroplane height above the ellipsoid to longitude to determine BTO arcs.