Finningley - The B is about 3000 pounds heavier than the A (OEW). Most of the difference is in the lift fan, so with no weapons and a light fuel load the B's CG will be quite a bit further forward than the A's (unless the A carries most of the fuel forward at part-load, which seems unlikely). Also, as part of the weight-saving exercise on 03-04, the B was given slightly smaller H-stabilizers. So it won't fly exactly the same way.
Last edited by George K Lee; 21st Jun 2017 at 17:47.