The National Aeronautics Space Agency (NASA) is trying to invent a foldable wing aircraft after being inspired from incredible nosedive of the hawk when it folds its wings. NASA doesn’t want to have controlled dives, but there are many other benefits to this unique design, such as increasing the efficiency and capabilities of the aircraft.
NASA name the design Spanwise Adaptive Wing (SAW). Until now, articulating wings on aircraft was done to optimize parking area and to make them fit into smaller hangars. the articulated wings also helps for easier movement within the airport infrastructure.
But NASA wants to use smaller and adjustable wing ends along with more precise specifics articulation and control with the ability of changing position dynamically to create the perfect balance between lift and yaw control that is needed during different flight conditions.
One use of this concept idea will be in supersonic aircraft. When the aircraft is flying at very high speeds, it creates a lot of lift but consequently, have lesser yaw control. By folding the ends of the wings up or down, stability and yaw control will be enhanced, creating more vertical surface to augment the rear tailfin. But this will not happen at the expense of critical lift during the difficult takeoff and landing because the wings are still capable of straightening to add the lift surface to flight.
This concept is now a reality courtesy advancements in the actuators required to move the wings, which have been changed from the more outdated and heavy hydraulic systems to more efficient and lighter electric ones.
NASA’s Matt Moholt said on the concept,
“We are revisiting folding-wing aircraft. Because new technologies that did not exist in the 1960s allow actuation to be put in tighter wings, in smaller volumes. This allows a much thinner wing and a thinner portion of the wing to become articulable. Namely the tips of wings, which are normally rigidly fixed.”
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