GUIDANCE FOR THE USE OF SIMULATION FOR AIRCRAFT CERTIFICATION OF LIGHTNING
ARP7093
This document is intended to provide a standardized approach for the use of simulation evidences for certification of aircraft when exposed to Lightning. The document describes how to conduct modelling and simulation for direct and indirect effects of Lightning.
Guidance is provided on how to select the appropriate modelling approach, validation process, and uncertainties analysis for producing reliable evidences for certification.
The document is one of a set covering the whole spectrum of aircraft interaction with lightning. Other documents relating to other aspects of the certification process, including definition of the lightning environment, zoning, and indirect effects certification are listed in Chapter XX.
This document is to provide guidance on how simulation can be used in the support of ED-91/ARP5414, ARP5415/ED-158 and ARP6205/ED???. The document addresses the validation requirements of EM solvers, supporting software suites and EM simulation models. Included in this will be a discussion on validation and verification, which will lead to the methods on how to do uncertainty analysis and how to use this to define the margins required for when only simulation is used and where test and simulation are used.
When lightning modelling is a part of a certification plan, the modelling process and techniques described herein are an acceptable means, but not the only means, of meeting the requirements of the certification plan.
Rationale: The purpose of this document is to be counterpart to ARP 5416/ED-105 for the virtual laboratory. It is important if not vital that the Applicant/OEM build confidence in the modelling processes and abilities with the certifying airworthiness authority. Therefore as part of the model validation section, a subsection will suggest approaches to building this confidence. This ARP/EP is not intended to provide mandatory approaches to compliance. In many cases, the path to compliance may use one or more of several methods. Applicants may elect to demonstrate compliance through alternative methods that are acceptable to their certifying airworthiness authority.
