In Russia, a new development for civil aviation has been registered — an air brake wing of large span for wide-body long-haul aircraft. The development proposes a fundamentally new layout of the brake flap based on an integral composite block.
The patent states that the structure consists of three sections. The first section was made on the basis of a one-piece bonded composite structure with a spar, skins, diaphragms, and load-bearing walls.
The second and third sections use a honeycomb filler, composite panels, and a reinforced spar. This approach makes it possible to distribute loads evenly and reduce the weight of the unit.
The developers relied on integral assembly. Most elements are joined using adhesive technologies in a single production cycle, which will reduce the amount of tooling, decrease the number of fasteners, and lower the number of operations during the final wing assembly.
Additionally, the design provides lightning protection in the form of a perforated copper mesh, as well as insulating layers at the contact points between composites and aluminum parts. This increases operational reliability and reduces the risk of corrosion.
Let us recall that the air brake is intended to reduce speed by increasing drag and plays a key role in the aircraft's controllability during landing and maneuvers. The new design simplifies maintenance of the unit and speeds up its replacement during repairs.
Earlier, in Russia, a patent was registered for a mounting device for attaching a supersonic passenger aircraft to a carrier aircraft. Presumably, the prospective airliner will be equipped with PD-35 engines.
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