Airbus believes aircraft following another one can reach up to 10% in fuel burn reduction by taking advantage of wake updraft.

The manufacturer launched its 'fello'fly' project at Dubai Airshow in a move that could pave the way for entry-into-service by the middle of the next decade. The project is geared at both testing the technical feasibility of the concept and also at addressing as many operational issues that may arise with airlines, air traffic management and regulators.