Researchers from NASA and MIT have successfully built a new kind of airplane wing that could automatically change shape and make air travel way more efficient.

The new structure is a lightweight lattice framework which is made up of thousands of repeating, tiny triangles of matchstick-like struts that are covered in a thin polymer layer, detailed Engadget. Since this material mainly consists of empty space, it is incredibly lightweight, less than one-thousandth the density of rubber.

Moreover, the struts enable the wing to change its shape automatically in response to changes in the aerodynamic loading conditions. The wing automatically adjusts itself to whatever configuration is most favorable for the current phase of flight. Both the factors combined could pave way to make aircraft more energy efficient.

MIT researchers fly first-ever aircraft with no moving parts

Researchers explained that for each of the phases of flight, such as takeoff and landing, cruising, maneuvering and such, they all have their own various set of optimal wing parameters, hence providing a much better approximation of the best configuration for each stage, as per MIT News.

“We’re able to gain efficiency by matching the shape to the loads at different angles of attack,” said lead author Nicholas Cramer. “We’re able to produce the exact same behavior you would do actively, but we did it passively.”

“The research shows promise for reducing cost and increasing the performance for large, light weight, stiff structures,” researcher Daniel Campbell, who wasn’t involved in the research, told MIT News. “Most promising near-term applications are structural applications for airships and space-based structures, such as antennas.”