Kirk:

Fuel was pumped around in Concorde to keep the CG within limits with the added benefit of reducing trim drag. But aircraft control in cruise was through the control surfaces like in any airplane. Moving fuel to a tail tank to reduce trim drag is common in long range airliners. Because of Concorde's wing/fuel tank design, there was a lot of CG shift with fuel burn necesitating a lot of fuel pumping around the system.

cirrus