Concorde Performance System X:
http://concordeperformancesystem.org/
Concorde Performance System X (referred to as CPS-X hereafter) is a standalone utility which can be used with SSTSIM for Microsoft Flight Simulator 2004 (aka FS9) and FSLabs Concorde X for FSX, FSX-SE, P3D v2.x and v3.x.
It allows the most demanding simmers to plan any Concorde flight either subsonic or supersonic. Any airport included in the simulator can be chosen as departure, destination or alternate, provided that it has a long enough runway to takeoff or land Concorde.
CPS-X is only a fuel