Metallic conduction network of composite airplane

Abstract

The invention relates to the technical field of airplane structure design, in particular to a metallic conduction network of a composite airplane. Main metallic conduction strips fixed to the inner wall of an airplane skin transmit power supply and electric signals to airborne equipment through vertical metallic conduction strips fixed to an airplane vertical structural member, horizontal metallic conduction strips fixed to an airplane horizontal structural member, and extending metallic conduction strips in sequence, wherein the airplane vertical structural member is fixed to the airplane skin, and the airplane horizontal structural member is fixed to the airplane vertical structural member. The metallic conduction strips are jointed in sequence and connected with one another with low impedance, therefore, the integral metallic conduction network is formed inside an airplane, the ground connection reference is provided for an airplane system and the airborne equipment, and the metallic conduction network is used for ground connection of the airplane and the interior airborne equipment for radio frequency protection, power supply backflow, lightning protection, electrostatic protection and protection against electric shock.

Description

technical field [0001] The invention relates to the technical field of aircraft structure design, in particular to a conducting metal network of a composite material aircraft. Background technique [0002] As a special platform system, the aircraft must be separated from the natural equipotential body of the earth when it works, but at the same time, as the carrier of a large number of other airborne equipment and structural parts, it must provide an equipotential installation platform for the airborne system. It is to make all the equipment and components have the same potential, which can play a variety of roles such as suppressing electric shock and ignition, lowering the voltage drop of the power supply circuit, and having a discharge path for the induced current of radio frequency interference, and a discharge path for the lightning strike current. It is a necessary condition for the safe and stable operation of airborne equipment and systems. The ground network design...

AI Technical Summary

Problems solved by technology

However, compared with metal materials, the internal resistivity of composite materials is usually 1000 times or more different from that of metal materials, and the shielding performance of composite materials is reduced, the wave transmittance is high, the large current carrying capacity is reduced, and the electrical conductivity is deteriorated, etc. Extensive use of composite materials makes aircraft systems more complex to address electromagnetic interference, current loops, and lightning strike protection

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