Overcoming E3 Challenges and Achieving Compliance

For decades, EMA has been a trusted partner in helping aerospace manufacturers achieve certification for high intensity radiated fields (HIRF) and lightning protection. We leverage advanced simulation tools and precise measurements to transform how the industry achieves electromagnetic environmental effects (E3) compliance.

EMA addresses all aspects of E3 phenomena such as:

  • Electromagnetic interference (EMI)
  • Electrostatic discharge (ESD)
  • Electromagnetic pulse (EMP)
  • HIRF
  • Lightning
  • Precipitation static (P-static)
  • Radiation hazards (RADHAZ)

Accelerating E3 Approval

By simulating early in the design process, engineers reduce the need for physical testing, guide the selection of test points, and identify potential issues before they escalate into costly setbacks. Companies using simulation report up to a 30% reduction in time-to-market.

EMA uses Ansys EMC Plus to simulate thousands of cable segments using a hybrid transmission line solver. This is especially valuable for full-platform simulations where cable routing and grounding are key to passing certification. The software models key phenomena such as:

  • Field penetration
  • Cable coupling
  • Antenna-to-antenna coupling
  • Functional degradation
  • Radiation from the system

EMC Plus is also used to evaluate design changes after certification to ensure continued compliance.

Precision Measurements

Physical E3 testing involves subjecting systems to controlled electromagnetic environments and measuring their resilience against lightning strikes, HIRF, EMI, and other electromagnetic threats.

EMA’s team recreates lightning strikes using a custom-built lightning transient generator (seen below). This allows us to measure open circuit voltage, short circuit current, and magnetic fields while also characterizing current distributions across wiring and structural components. Testing takes place at the customer site and is tailored to each aircraft.

Additionally, we perform HIRF testing using radio frequency (RF) equipment.

Proven Track Record in Aircraft Certification

EMA began its journey supporting McDonnell-Douglas in certifying the MD-90 aircraft for lightning indirect effects using simulation alone. Since then, we have played key roles in programs such as:

  • Bombardier CSeries
  • Mitsubishi Regional Jet
  • Bell Helicopter
  • Orbital Sciences
  • Sierra Nevada Dream Chaser
  • Lockheed Martin Orion Crew Capsule
  • NASA Crew Vehicle Programs

Navigating the Complexities of E3

E3 testing requires active participation and poses significant challenges. Universities rarely teach it, platforms behave differently, and the process spans multiple disciplines. EMA experts guide you through the complexities of E3 certification. Our team applies hands-on experience in simulation and testing to help you achieve certifications and standards such as:

  • ARP 5583
  • ARP 5416/ ARP 5415
  • MIL-STD-461
  • DO-160

If you are working on an aerospace or defense project, or curious about how E3 testing impacts your platform, reach out to us now by clicking here.

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