Deformable biplane configuration

Abstract

The invention provides a deformable biplane configuration. The configuration comprises an upper wing, a lower wing and a plurality of parallel distributed deformation mechanisms, wherein the upper wing and the lower wing are connected through the deformation mechanisms; each deformation mechanism comprises a connecting strut and 1 to 2 motion mechanisms; a drive mechanism and a locking device are arranged on each motion mechanism which is fixed on the upper wing or the lower wing; one end of the connecting strut is mechanically connected with the motion mechanism, while the other end of the connecting strut is mechanically connected with the motion mechanism or fixedly connected with the upper wing or the lower wing; the drive mechanism drives the motion mechanism to drive the connecting strut to ensure that the upper wing and the lower wing rotate in 0 to 180 degrees in the course direction and the height direction; and when the upper wing and the lower wing move to a set position, the locking device locks the motion mechanism, and positions of the upper wing and the lower wing are fixed. Regarding the wing configuration mode of a solar plane, the deformable biplane configuration is adopted, compared with single plane configuration, under a condition that the same wing type, the same wingspan and the same aspect ratio of a single wing are adopted, through the deformable biplane configuration, the takeoff weight can be increased, the effective load can be increased, the induced drag of the wings can be reduced, and the area of a solar cell panel can be increased, so that the solar energy absorption capacity can be improved, and the energy consumption of night flight can be reduced.

Description

technical field [0001] The invention relates to a wing layout of a solar-powered aircraft, in particular to a deformable (deformable means that the upper and lower wings can move relative to each other in the course direction and height direction), which belongs to the solar-powered aircraft The technical field of wing design. Background technique [0002] Solar-powered aircraft is a better choice for high-altitude or near-space ultra-long-duration aircraft. This type of aircraft is being vigorously developed at home and abroad. At present, solar-powered aircraft basically adopt a single-wing layout with a large wingspan or a large-wingspan folding type. Single wing layout. [0003] Although the existing wing layout is relatively simple, due to the large wingspan, the bending and torsion performance of the wing will decline, which is not conducive to flight; meanwhile, in order to have a larger lift-drag ratio, the aspect ratio of the wing is very high. Large, so the wing ...

AI Technical Summary

Problems solved by technology

[0003] Although the existing wing layout is relatively simple, due to the large wingspan, the bending and torsion performance of the wing will decline, which is not conducive to flight; meanwhile, in order to have a larger lift-drag ratio, the aspect ratio of the wing is very high. Large, so the wing area will be limited, which is not conducive to increasing the take-off weight, payload, and also affects the absorption of solar energy

[0004] Enhancing the stiffness of the wing can improve the bending and torsional performance of the wing, such as increasing the relative thickness of the airfoil or using a spar with good stiffness characteristics. The relative thickness of the type will reduce the aerodynamic performance, and the spar with good stiffness characteristics is either very heavy, which reduces the payload, or the material processing technology is complicated or expensive, which increases the cost of the aircraft; enhancing the area of ​​the wing can increase the solar energy. The absorption capacity, such as increasing the wingspan or the geometric mean chord length of the wing, but the increase of the wingspan will contradict the bending and torsion design of the wing, and the increase of the geometric mean chord length will conflict with the aerodynamic performance design of the wing Contradictory, which makes the design more difficult

Images