Rotorcraft HIRF Qualification and Accident Investigations driven by - - PowerPoint PPT Presentation

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Rotorcraft HIRF Qualification and Accident Investigations driven by - - PowerPoint PPT Presentation

Mar 08, 2023 157 likes •460 views

Rotorcraft HIRF Qualification and Accident Investigations driven by model based analysis Contents Introduction C130 experimentation results DGA model based analysis evolutions axis HIRF tests engineering Cougar qualification

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SLIDE 1

Rotorcraft HIRF Qualification and

driven by model based analysis

Accident Investigations

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SLIDE 2

DGA Aeronautical Systems

12/09/2012 Slide N°2 / 29

Contents

 Introduction  C130 experimentation results  DGA model based analysis evolutions axis

HIRF tests engineering

  • Cougar qualification illustration

Accident investigation support

  • Flight control incident

 Conclusion

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DGA Aeronautical Systems

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Contents

 Introduction  C130 experimentation results  DGA model based analysis evolutions axis

HIRF tests engineering

  • Cougar qualification illustration

Accident investigation support

  • Flight control incident

 Conclusion

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DGA Aeronautical Systems

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Introduction

DGA missions :

Equipping the armed forces

Preparing for the future

Promoting defence equipment exports

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DGA Aeronautical Systems

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Introduction

Aircraft safety

Environment & Vulnerability Structures Materials Systems & Sub-systems Air Mobility Test Rig Engineering Mission Sub-Systems Embedded Systems and Software

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DGA Aeronautical Systems

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Introduction

 "Embedded Systems and Software" activities

Complex systems dependability

  • Safety analysis validation (ARP 4754) :

– Functional (FHA) – Organic (PSSA / SSA) – Zonal (ZHA / ZSA)

Software and complex electronic hardware certification (DO-178 and DO-254)

  • Audits depending on Development Assurance Level (DAL)

Qualification tests engineering (DO-160, ED107)

  • Aggression level depending on DAL or safe path

 BEAD and Justice minister request

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DGA Aeronautical Systems

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Contents

 Introduction  C130 experimentation results  DGA model based analysis evolutions axis

 HIRF tests engineering

  • Cougar qualification illustration

 Accident investigation support

  • Flight control incident

 Conclusion

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DGA Aeronautical Systems

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C130 experimention results

 Architecture diagram  Wiring diagram  Functional description  Safety analysis

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DGA Aeronautical Systems

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 VHF Communication System

C130 experimention results

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DGA Aeronautical Systems

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Functional view

C130 experimention results

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DGA Aeronautical Systems

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Organic view

C130 experimention results

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DGA Aeronautical Systems

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Organic view The model represents our understanding level of the system.

C130 experimention results

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DGA Aeronautical Systems

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Organic view Le modèle représente notre niveau de compréhension du système.

  • Organic failures
  • SW / HW loss or detected

erroneous value

  • SW / HW undetected

erroneous value (misleading)

  • Synchronizations
  • Identified common modes

C130 experimention results

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DGA Aeronautical Systems

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Zonal view

  • Zonal threats
  • fire
  • HIRF aggression
  • lightning
  • bird strike

C130 experimention results

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DGA Aeronautical Systems

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  • Operating state
  • Zonal threat :

HIRF agression

C130 experimention results

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DGA Aeronautical Systems

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 Quantitative & qualitative analysis

Fault tree & Sequence generation

Minimal cuts number at a given order  common modes, particular risks, zonal analysis

Probability verification

Development Assurance Level (DAL) allocation verification

C130 experimentation results

  • unit validation
  • easy to refine & modify
  • easy to integrate
  • emergent properties
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DGA Aeronautical Systems

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 Architecture quality analysis

Optimal qualitative rendering through the minimal cuts

Candidate architectures comparison

 Complexity control

Better system understanding help

Emergence of properties

Common modes control

 Collaborative work / capitalization

Usable tool within a joined team

Reusable and customizable framework

 Interfacing with Industry

Used by industrials

Professional tool specialized in Safety analysis

C130 experimentation results

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DGA Aeronautical Systems

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Contents

 Introduction  C130 experimentation results  DGA model based analysis evolutions axis

 HIRF tests engineering

  • Cougar qualification illustration

 Accident investigation support

  • Flight control incident

 Conclusion

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DGA Aeronautical Systems

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 Around 10 various Altarica

models have being produced

MRTT, Multi-Role Tanker Transport (Navigation systems)

VBMR (Army vehicule system)

MdCN, Nuclear Submarine Missile

Hawkeye (Navigation systems)

C160, Transall (flight control system )

Cougar, military Super-Puma AS532 (Decoy Launcher System)

ACCS (French Air Force Air Traffic Managment)

TSMPF ( Naval Tactical Communication System)

Since C130 experimentation in 2010

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DGA Aeronautical Systems

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HIRF tests engineering

 Hight Intensity

Radieted Fields

 Severe

electromagnetic environment (more than 200V/m)

 Aircraft system must

perform their function close to the carrier radar

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DGA Aeronautical Systems

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HIRF tests engineering

 Antenna  Anechoic

chamber

 Digital data links

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DGA Aeronautical Systems

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Cougar Decoy Launcher system

 « Catastrophic »

failure condition

Loss of jettisoning command combined with an emergency landing Emergency landing Loss of Jettisoning order

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DGA Aeronautical Systems

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Cougar HIRF tests instrumentation

 Data links

 FADEC and VMS ARINC 429 data links  Decoy Launcher CAN networks

 …

 Camera  Position sensor  …

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DGA Aeronautical Systems

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Accident Investigations

 Requests

 BEA/BEAD

  • Failure identification

 Justice minister

  • Responsability

identification

 Expertise domains

 Structurals  Materials  Digital Embedded Systems (flight control, avionics,…)  …

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DGA Aeronautical Systems

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Accident Investigations

 Complex

Architecture

 Old system without

safety analysis

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DGA Aeronautical Systems

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Contents

 Introduction  C130 experimentation results  DGA model based analysis evolutions axis

 HIRF tests engineering

  • Cougar qualification illustration

 Accident investigation support

  • Flight control incident

 Conclusion

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DGA Aeronautical Systems

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 Scope of the dependability process

at DGA Aeronautical Systems level

  • support for critical systems and software certification
  • support for qualification test assessment
  • support for accident investigation

at DGA level

  • support to design architects for :

– Airworthiness Authorities issues – technical risk control of a program

 Modelling drives our assesment process efficiency

Conclusion

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DGA Aeronautical Systems

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 Model based security assesment  Model coupling with electromagnetic simulation

Assess ligntning impact on system

Next evolutions

Vincent Louis, Florian Many

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DGA Aeronautical Systems

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Questions