The invention discloses a pneumatic
layout for improving the transverse lateral
coupling characteristics of a hypersonic
flight vehicle. The surface symmetrical lift-drag ratio pneumatic
layout adopting the design comprises wings (1), a
fuselage (2), V tails (3),
V tail trailing edge rudders (4), wing
trailing edge rudders (5) and a ventral fin (6), wherein the wings (1) are symmetrically installed under the
fuselage (2), the V tails (3) are symmetrically installed on the rear portion of the
fuselage (2), the ventral fin (6) is installed at the rear portion of the bottom of the fuselage (2), the rear edges of the wings (1) are provided with the wing
trailing edge rudders (5), the rear edge of the
V tail (3) is provided with the
V tail trailing edge rudders (4), and the wing trailing edge rudders (5) and the V
tail trailing edge rudders (4) are pneumatic operation control surfaces. By adopting the pneumatic design, the lateral
instability caused by the rolling operation
coupling effectunder a large
attack angle of an existing pneumatic
layout can be very effectively eliminated, so that the closed-
loop stability in the transverse lateral direction under the large
attack angle is improved.