System for Green Operations

How can systems contribute to aviation environmental objectives?

Project details

Thales, Liebherr


Up to now aircraft systems have been designed mainly from a safety, time efficiency and affordability perspective. The increasing social demand to reduce fuel consumption, emissions and noise leads to the adoption of a new approach when designing systems. Two domains have been identified in the Systems for Green Operations ITD as major contributors to the achievement of the green challenges:

  • The Management of Aircraft Energy (MAE), which includes the two focus areas of "All-Electric Aircraft Equipment Systems Architectures" and "Thermal Management"

  • The Management of Aircraft Trajectory and Mission (MTM), which includes the two focus areas of "Management of trajectory and Mission" and "Smart Operations on Ground"

The ITD will deliver solutions that are integrated at aircraft level, demonstrated in realistic operational conditions and proven against the environmental challenges


Environmental Objectives

How can systems contribute to environmental objectives?

SGO ITD will create value for different phases of aircraft operation, the highest overall benefits being realized during the approach, on-ground and departure phases.

Less CO2 and NOx emissions are expected thanks to reduced fuel consumption as well as noise reduction according to the following improvements:

  • Improved energy management and mission management
  • New trajectories and systems weight reduction
  • Improved on-ground operations

The current environmental targets for a large aircraft are the following: 

  CO2 Noise (dBA) 
Reference to a typical mission
 -5 to –9%   -2 to –5 dBA (approach/landing) -2 to -3dB (take-off/climb) 

These objectives are being revised and broken down into individual objectives for each technology, considering that overall CO2 or Noise reduction can only be validated at aircraft level. The objectives for each technology are validated and refined during the TRL gates. At system level, direct contributions will be expressed in terms of technology improvements (e.g. weight impact, energy efficiency, reduction of engine power off-take, etc).

Additional benefits are also expected, e.g. reduction of NOx emissions, suppression of the use of hydraulic fluids and reduction of persistent contrails formation. 



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