ADDSAFE project summary

Advanced Fault Diagnosis for Sustainable Flight Guidance and Control (ADDSAFE)

The state-of-practice for aircraft manufacturers to diagnose guidance & control (G&C) faults and obtain full flight envelope protection at all times is to provide high levels of hardware redundancy in order to perform coherency tests and ensure sufficient available control action.

This hardware-redundancy based fault detection and diagnosis (FDD) approach fits also into current aircraft certification processes while ensuring the highest level of safety standards. However, these FDD solutions increase the aircraft weight and complexity and thus its manufacturing and maintenance costs. Moreover, its applicability is becoming increasingly problematic when used in conjunction with the many innovative solutions being developed by the aeronautical sector towards achieving the future “sustainable” (More Affordable, Safer, Cleaner and Quieter) aircraft.

This applicability gap has resulted in a de facto “fault diagnosis bottleneck”, a technological barrier constraining the full realization of the next generation of air transport due to the need to ensure the current highest levels of aircraft safety when implementing novel green and efficient technologies.

ADDSAFE addresses the fault detection and diagnosis challenges arising from this “fault diagnosis bottleneck”. The overall aim is to research and develop model-based FDD methods for aircraft flight control systems faults, predominantly sensor and actuator malfunctions. Highlighting the link between aircraft sustainability and FDD, it can be demonstrated for example that improving the fault diagnosis performance in flight control systems allows to optimize the aircraft structural design (resulting in weight saving), which in turn helps improve aircraft performance and to decrease its environmental footprint. The results will help achieve the European Vision 2020 challenges related to the “greening” of the aircraft, by supporting the application of already developed sustainable solutions, as well as to “safety”, by opening the door to develop new technologies to maintain the current highest aircraft safety levels regardless of the increase in air traffic. ADDSAFE will try to overcome the technological gap in aircraft G&C FDD by facing the following three challenges:

  1. Helping the scientific community to develop the best suited FDD methods capable of handling the real-world problems faced in the aircraft G&C diagnosis.
  2. Ensuring acceptance and widespread use of these advanced theoretical methods by the aircraft industry.
  3. Contribute towards reducing the aircraft development and maintenance costs by using model-based diagnostic systems in conjunction with reliable software verification & validation (V&V) tools.

Acronym: ADDSAFE
Name: Advanced Fault Diagnosis for Sustainable Flight Guidance and Control
Contract number: FP7-AAT-2008-233815
Instrument: Collaborative - Small or medium-scale focused research project
Total Cost: 3.662.624 euros
EU Contribution: 2.608.594 euros
Call: FP7-AAT-2008-RTD-1
Starting Date: 1st July 2013
Completion Date: 31st October 2012
Coordinator: Dr. Andres Marcos (Deimos Space SLU)
EC Officer: Francesco Lorubbio (2009-2011)

Hugues Felix (2011-2012)