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Direction-finding antenna cover with balance beam appearance

A direction-finding antenna and balance beam technology, which is applied to antennas, antenna parts, radiation unit covers, etc., can solve the problems of poor waterproof ability, small internal space of the balance beam radome, and great influence of tail airflow separation, and achieves easy appearance and satisfactory Process practicability, effect of improving design workload

Inactive Publication Date: 2018-03-13
SHAANXI AIRCRAFT CORPORATION
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AI Technical Summary

Problems solved by technology

[0005] (1) Purpose of the invention: the present invention overcomes the shortcomings of the existing balance beam radome with small internal space, large influence of tail airflow separation, poor waterproof ability, etc., reduces the influence of increasing the shape of the balance beam radome on the aerodynamic characteristics of the aircraft, and provides a Types of Balancing Beam Radome and Direction Finding Radome Shapes

Method used

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  • Direction-finding antenna cover with balance beam appearance
  • Direction-finding antenna cover with balance beam appearance
  • Direction-finding antenna cover with balance beam appearance

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Embodiment approach

[0053] The main design implementation plan is as follows:

[0054] 1) Balance Beam Composition Design

[0055] The balance beam is composed of H-shaped bracket, top cover, base, front fairing, rear fairing and struts, and balance beam radome. For details, see Figure 11 ;

[0056] The shape of the balance beam designed from the above components ensures the feasibility of the internal structure's functional implementation. The balance beam structure design adopts a double-closed room frame structure (the front and rear end frames, H-shaped brackets, top cover and side radome are connected to form the upper box section, and the balance beam base (torque box) is the lower box section), the cover body structure The aerodynamic force and inertial force are transmitted to the lower torsion box through the upper structure, and then the lower torsion box is transmitted to the fuselage through the truss system (outriggers) for balance;

[0057] The top cover structure is divid...

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Abstract

The invention designs a direction-finding antenna cover with a balance beam appearance, and belongs to the overall aerodynamic appearance design field. Due to relatively large appearance dimension ofan added antenna, a design method of mixing front and back rectifying regions with a transitional streamline of the antenna cover appearance in the layout design of the antenna cover is adopted, so that separation occurring when air flow flows through the antenna cover can be lowered, and air-flow flow field can be improved; through comparison and analysis on low-speed aerodynamic characteristics,flow field characteristics and a vorticity graph, the optimal scheme is determined; and under the premise of satisfying the use requirement of a task system, the appearance dimension of the antenna cover is reduced as far as possible, so as to reduce influence to the aerodynamic characteristics of an aerial carrier from the added antenna cover; the antenna cover adopts multiple items of overall aerodynamic comprehensive optimization design measures of a variable parameter control contour line, CFD calculation, a wind tunnel test and the like, so that the appearance dimension of the antenna cover is optimized to the largest extent; the problems of small internal space, inconvenience in waterproof and rain leakage prevention design of the existing antenna cover with the balance beam appearance are solved; and the novel direction-finding antenna cover optional scheme with the balance beam appearance is provided.

Description

technical field [0001] The invention belongs to the field of overall aerodynamic shape design of aircraft, and relates to a balance beam shape and a direction-finding radome of a certain type of aircraft. Background technique [0002] According to the antenna layout of the whole machine, the performance of mission functions and the design requirements of electromagnetic compatibility of the whole machine, a certain model decided to adopt the TX / RX main antenna of the mission system in the form of a backpack balance beam and install a direction-finding antenna array after multiple rounds of demonstration and analysis. Due to the large envelope size of the mission system antenna array of this type of aircraft, the balance beam radome of a certain type of aircraft cannot meet the installation and use requirements of the mission system equipment of this type of aircraft, and the shape of the balance beam and the shape of the direction-finding radome need to be newly designed. ...

Claims

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Application Information

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IPC IPC(8): H01Q1/42H01Q1/28
CPCH01Q1/286H01Q1/42
Inventor 温昌杰任开勋刘建军冯虎祥张泉赵晓霞刘毅顾明华余菲
Owner SHAANXI AIRCRAFT CORPORATION
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