The world has a sudden twin-aisle overcapacity problem: Orders have fallen precipitously, and the number of parked twin-aisles is rising.

The ability to fly supersonic over land will be the game changer for supersonic business jets, but that’s not likely to happen for another 10 to 15 years, says Gulfstream, which is actively but quietly studying the concept.

Bolstered by the selection of its Silvercrest mid-thrust turbofan for Cessna’s newly launched Hemisphere business jet, Safran Aircraft Engines has detailed a revised development schedule incorporating improvements made to counter problems uncovered in early tests.

Rolls-Royce’s power gearbox and ceramic matrix composites work are part of a plan that will culminate in the UltraFan, an engine aimed at future airliners for 2025 onward.

The combined company will be a super supplier of buyer-furnished equipment poised to ride the wave of aircraft interior retrofits.

The concept of printing metallic parts for aerospace applications in place of traditional forging and casting may be in its infancy, but General Electric says the coming revolution in additive manufacturing for aircraft engines is approaching quickly and on an unprecedented scale.

Zee’s electric VTOL aircraft is spotted; Boeing’s commercial tiltrotor is patented; Japan’s Fquroh is quieter; NASA’s NEAT is tested.

Aviation Week editors recently saw a demonstration of the folding wingtip at Boeing’s plant in Everett, Washington. The target time for extending and/or retracting the wingtip is 20 sec. Watch and listen closely when it reaches the selected position to hear the locking mechanisms engage.