Unlock instant, AI-driven research and patent intelligence for your innovation.

Lightning protection device for an antenna receiver, and aircraft comprising same

A lightning protection and receiver technology, applied in antenna grounding switch structure connection, suitable for antennas on movable objects, overvoltage action switches, etc., can solve problems such as difficult conduction

Active Publication Date: 2013-01-16
EURON AERONAUTIC DEFENCE & SPACE
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the widespread use of composite materials for airframe design has led to difficulties in terms of conductivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lightning protection device for an antenna receiver, and aircraft comprising same
  • Lightning protection device for an antenna receiver, and aircraft comprising same
  • Lightning protection device for an antenna receiver, and aircraft comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] It is to be noted by way of precondition that the figures are not to scale.

[0028] exist figure 1 An aircraft 10 including an antenna 15 , an antenna signal receiver 20 and a lightning protection device 25 is seen in FIG.

[0029] The aircraft 10 is of any type: civil or military, manned or unmanned. In some preferred embodiments, aircraft 10 has a fuselage comprising electrically insulating material, especially composite material. The antenna 15 is of known type. Due to their shape and their positioning, these antennas are especially vulnerable to lightning strikes. The antenna signal receiver 20 is of known type. They are connected to avionics and / or to communication equipment (not shown). Each lightning protection device 25 is electrically interposed between an antenna 15 and an antenna signal receiver 20 . figure 2 A special embodiment of the lightning protection device 25 is shown above.

[0030] exist figure 2 In the particular embodiment shown, the li...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a lightning protection device (25) for an antenna receiver, comprising a shield (40, 70) for a coaxial cable (35, 65) connected to the antenna, and a high-pass filter mounted in series relative to said shield and capable of limiting the low-frequency power flowing in said coaxial cable, comprising a capacitor (30, 50, 55) and an inductor lower than 1 ohm at the lowest frequency used by said receiver, said capacitor including at least one layer of a conductive material embedded in a printed circuit. In some embodiments, the capacitor is made of a printed circuit (30) comprising at least two floorplans (50, 55), each of which is connected to the ground of a connector (80, 85) of the coaxial cable. The printed circuit may e.g. comprise at least one layer of a highly pervious material sandwiched between two layers of a conductive material.

Description

technical field [0001] The invention relates to a lightning protection device for an antenna receiver in an aircraft and an aircraft including the device. The invention has particular application to aircraft whose fuselage comprises electrically insulating material, especially composite material. Background technique [0002] There are many antennas installed on the aircraft fuselage. However, the widespread use of composite materials for airframe design has led to difficulties in terms of electrical conductivity. In particular, a large contact resistance is exhibited between the metal support of the antenna, by which the antenna can be fixed to the fuselage, and the composite plate on which the support is fixed. These resistances are on the order of tens of megohms. When a lightning strike occurs, this very high resistance causes a current to flow on the coaxial cable connected to the antenna, which is about 15KA for a 200KA (kiloampere) strike, which is too restrictive ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01H83/10H01Q1/28
CPCH01Q1/50
Inventor M・梅耶尔
Owner EURON AERONAUTIC DEFENCE & SPACE