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Combined rudder surface of a tailless aircraft

A tailless aircraft, combined rudder technology, applied in aircraft parts, aircraft control, transportation and packaging, etc., can solve problems such as unfavorable pitching moment, large coupling rolling moment, etc., to increase longitudinal static stability and improve flight safety. , the effect of simplifying the control law of the rudder surface

Active Publication Date: 2016-03-30
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of large coupled rolling moment and unfavorable pitching moment when the embedded rudder surface is deflected for heading control, the present invention proposes a combined rudder surface for tailless aircraft

Method used

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  • Combined rudder surface of a tailless aircraft
  • Combined rudder surface of a tailless aircraft
  • Combined rudder surface of a tailless aircraft

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] The top view of the tailless body fusion aircraft is as follows figure 1 shown. The wings on both sides of the fuselage are respectively arranged with a group of combined control surfaces 2, and the combined control surfaces 2 on both sides of the wings are symmetrical to each other. Because the geometric symmetry of the whole machine and the rudder surface are also arranged symmetrically, the present invention is only described with one side, as figure 2 shown.

[0048] The combined rudder surface 2 includes an embedded rudder surface 3 and an elevon 4 . The external dimensions of the embedded rudder surface 3 and the elevon 4 are the same, and both are parallelograms. The two straight sides of the parallelogram profile that constitute the embedded control surface 3 and the elevon 4 are all parallel to the fuselage central axis 1; the two sides o...

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Abstract

A combined control surface of a tailless airplane comprises a parallelogram-shaped embedded control surface and a parallelogram-shaped elevon. Each of the two straight edges of each of the parallelograms forming the embedded control surface and the elevon is parallel to the central axis of the body of the airplane; and each of the two inclined edges of each of the parallelograms forming the embedded control surface and the elevon is parallel to the trailing edge of a positioning wing. The embedded control surface and the elevon in the combined control surface are positioned in a same span-wise position of the wing, and the position of the embedded control surface is close to the leading edge of the wing. The trailing edge of the elevon overlaps with the trailing edge of the wing. The largest deflect angle of the embedded control surface is 90DEG, and the deflect angle of the elevon is + / -30DEG. The combine control surface can increase the lift force, and makes up the lift loss caused by the opening of the embedded control surface; and the combined control surface increases the vertical static stability of the tailless layout, so the coupling rolling torque is reduced or eliminated, the separation flow area is increased, a large resistance increment is obtained, the vertical trimming burden is mitigated, and the course control efficiency is improved.

Description

technical field [0001] The invention relates to the design of a heading control rudder surface of a tailless wing-body fusion aircraft, in particular to a combined rudder surface of a tailless aircraft. Background technique [0002] Compared with conventional aircraft, the tailless wing-body fusion aircraft cancels the horizontal tail, elevator, vertical tail, rudder and other components, and adopts a flat lifting body fuselage design, and the wings and fuselage are smoothly integrated, thereby greatly reducing the wetness The area reduces the overall machine resistance and has high aerodynamic efficiency. The tailless fuselage aircraft will become the ideal aerodynamic layout form of the new generation of large passenger aircraft in the future with low fuel consumption, low emissions, and low noise as the main design goals. [0003] The biggest challenge in the design of tailless wing-body fusion aircraft lies in the problems of heading stability and heading control caused...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C9/00
Inventor 褚胡冰张彬乾陈真利李沛峰沈冬马怡
Owner NORTHWESTERN POLYTECHNICAL UNIV
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