Airbus's next generation of single-aisle planes could feature longer, more slender wings that would help save fuel.

With its extended, foldable "wing of tomorrow" unveiled Tuesday at the Farnborough Airshow, Airbus is moving closer to the 2030 launch of its new single-aisle aircraft, Bruno Fichefeux, head of future programs at Airbus, told AFP.

Flight tests are due to start this year, and looking further ahead, the European aviation giant is also advancing plans for a hydrogen-powered aircraft, having recently partnered with German engine maker MTU.

The move marks a snub to France's Safran, its historic engine supplier, whose CEO, Olivier Andries, has said hydrogen aircraft are more suited to the next century.

A: We're working on the aerodynamic shape of the wings, the engines and materials to make the aircraft lighter.