grounding systems


Grounding Systems

Take charge of lightning strikes with space and weight-saving system-level solutions for aircraft grounding and bonding to traditional and composite airframes

Connectivity Solutions for Today's Composites. Every aircraft needs grounding and protection from lightning strikes and electromagnetic interference. Partnering with TE Subject Matter Experts (SMEs) enables airframe design engineers to solve for grounding and EMI protection especially on today’s advanced composite material aircraft. TE's engineering can help you build out a tailored "Current Return Network" (CRN) racey design solution. Systems include "Fast Fault Finding" for ease of maintenance and repair; flexible modular cable management; HIRF (high energy radiated felds) solutions;  unique bonding to composite airframes; TE's Kilovac fault interrupter and protective relays and alumnium power interconnects. Talk to us early in your design review process to leverage the full power of our expertise.

Beyond Products to System Solutions

While we offer one of the widest ranges of products for grounding and bonding, our ability to integrate them into an elegant, hard-working solution is proof that the whole is greater than the sum of its parts. 


What do you need in a grounding system?


  • Lightning protection
  • Fault protection
  • EMI protection


  • Quick Installation
  • Easy maintenance


  • Low resistance
  • Energy absorption
  • Fast fault finding

Peace of Mind

  • Comprehensive design
  • Cable management
  • Time-testing components
  • Long service life

Solving the Grounding Challenges of Composite Aircrafts

CFRP composites have a lower level of conductivity compared with metals and therefore do not naturally create a Faraday cage.  New strategies for grounding and bonding are required to:

  • Handle lightning, return, and fault currents
  • Provide a bleed path for ESD
  • Prevent damage to the composite
  • Maintain a low resistance pathway
  • Minimize voltage differentials
  • Provide electromagnetic shielding


Approaches like incorporating copper meshes into the composite's layers provide sufficient conductivity, which can create the required Faraday cage.  The approach, however, presents challenges in connecting and bonding the meshes to the aircraft's metallic structures with sufficient current-carrying capacity and distribution to handle currents.  

grounding systems
TE provides system-level thinking and system-level solutions to grounding.

Distributed Connectivity

As the use of composites grows for structural elements, highly distributed grounding systems, composed of both dedicated grounding paths and traditional metallic elements, are required.  Typically, the ground paths run longitudinally along the length of the aircraft and laterally around the fuselage's circumference, and are bonded to provide redundant pathways.  It is important to carefully analyse  pathways to understand the flow of currents to ensure optimal performance and protection.

grounding systems
Flexible, modular cable management enables easier routing and servicing of the system.