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A Method for Reducing Airfoil Pressure Drag of Fixed-wing Aircraft

A pressure differential resistance, aircraft technology, applied in the field of aviation, can solve the problem of inability to eliminate turbulence in the wake area

Active Publication Date: 2022-05-17
浙江万丰飞机制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology can effectively avoid the pressure difference resistance of the airfoil, but due to the friction on the surface of the wing, this leads to the fact that no matter how the aerodynamic shape is changed, the turbulent flow in the wake area cannot be eliminated

Method used

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  • A Method for Reducing Airfoil Pressure Drag of Fixed-wing Aircraft
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  • A Method for Reducing Airfoil Pressure Drag of Fixed-wing Aircraft

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Embodiment Construction

[0023] combine figure 1 , figure 2 , a method for reducing the airfoil pressure resistance of a fixed-wing aircraft: a steel wire 20 is arranged in front of the leading edge 11 of the airfoil.

[0024] The airfoil 10 is a CLARK Y airfoil.

[0025] One end of the steel wire 20 can be fixed on the fuselage of the aircraft, and the other end is fixed on the outer side of the wing. Alternatively, both ends of the steel wire are fixed on the wing, specifically, one end of the steel wire is fixed on the inner side of the wing, and the other end of the steel wire is fixed on the outer side of the wing. The inner end of the wing refers to the end of the wing close to the fuselage, and the outer end of the wing refers to the end of the wing away from the fuselage.

[0026] The diameter of the steel wire 20 depends on the thickness of the airfoil. As a preference, the diameter of the steel wire 20 has a difference of more than 50 times the thickness of the airfoil, that is, the thic...

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Abstract

The invention discloses a method for reducing the airfoil pressure difference resistance of a fixed-wing aircraft. A steel wire is arranged in front of the leading edge of the airfoil. Through the interference of the steel wire on the airflow, the airflow behind it forms a small-scale turbulent area. The turbulent area needs to cover a small part of the leading edge of the wing, and can be attached to the wing surface again in a short time, which can effectively reduce the pressure difference. The effect of resistance. The existing technology cannot completely eliminate the pressure difference resistance of the fixed-wing aircraft, but this design can completely eliminate the pressure difference resistance by building turbulent flow in the leading edge area of ​​the airfoil, thereby reducing the overall resistance of the fixed-wing aircraft, reducing the power consumption rate, and improving The economics of fixed-wing aircraft.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to the design of wings. Background technique [0002] Fixed-wing aircraft will be affected by resistance during flight, and the magnitude of resistance directly affects economic indicators such as the power consumption rate of fixed-wing aircraft. Reducing the resistance of fixed-wing aircraft is the goal pursued in the aerodynamic design process. [0003] There are four types of resistance faced by fixed-wing aircraft: frictional resistance, differential pressure resistance, interference resistance and induced resistance. Among them, the reason for the formation of pressure difference resistance is that the gas transition in the wake region of the fixed-wing aircraft forms turbulent flow, and the energy dissipation increases, resulting in the loss of pressure energy and the decrease of static pressure, thereby forming a pressure difference with the laminar flow at the leading edg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/36
CPCB64C3/36
Inventor 陈滨王祁
Owner 浙江万丰飞机制造有限公司
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