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SGO - Management of Trajectory and Mission
New approaches for the Management of Trajectory and Mission have to be adopted for an overall optimization of the aircraft and systems. This will be enabled by the following three concepts:
- Green Trajectories, based on more precise, reliable and predictable 3 dimensional flight path, optimized for minimum noise impact and low emission, including agile trajectory management, in response to meteorological hazard.
- A Green Mission from start to finish, with management of new climb, cruise and descent profiles, which allows multi-criteria optimization (noise, emissions, fuel, time), including management of weather conditions which could negatively impact the aircraft optimum route and result in additional fuel consumption.
- On the airfield itself, Smart Operations on Ground uses new systems solutions and new ground procedures, so as to allow airplane engines to reduce fuel consumption and offer additional environmental benefits.
Based on the results from several previous studies (e.g. Optimal, Flysafe, etc) these concepts will be enabled by the development at TRL 5 to 6 of the following families of technologies:
- Flight Management functions:
Flight Management and guidance algorithms provide high accuracy flight path prediction. This encompasses all flight phases.
- During departure and climb, the developed functions will ensure a combined optimization of CO2, noise and Nox emissions, meeting the constraints of each mission (airport procedures, atmospheric conditions, aircraft state, etc).
- During climb, the crew will be able to optimize the vertical and lateral trajectory according to aircraft performance and weather conditions (mainly winds).
- In descent and approach phase, enhancements to the already studied CDA concept (from e.g. Optimal) will be developed, in order to enable CDA even in dense traffic situation.
The new flight management functions may require an extension of the existing aircraft and engine performance information: additional or enhanced on-board databases will be developed when necessary, in particular to take into account new environmental parameters to be handled by the Flight Management Systems.
The new functions will ultimately be integrated into the target product: the green FMS and demonstrated in cockpit simulations at TRL5 to 6.
- Weather Avoidance and Mission optimisation
MTM will provide solutions for the management of robust performance in presence of atmospheric perturbations, based on characterization and surveillance of the environment.
In particular, a new sensor to measure atmospheric humidity has been investigated, and its integration into an Atmospheric Data Transmission System has been specified. This technology has reached TRL3 in 2012 but activities are stopped at this stage.
Improved Weather radar algorithms are developed in order to improve on-board detection accuracy for potentially hazardous weather conditions.
Mission optimization systems provide capabilities to build complete flight profiles optimized for multi criteria including environmental impact, combining selected climb, cruise and descent trajectories. This will also encompass the accurate real-time prediction of the complete flight profile and of its environmental impact.
- Smart Operation on Ground:
Two alternative approaches to a more ecological taxiing are concurrently addressed:
- Electrically driven wheels, integrated with the landing gear and braking systems, for aircraft motion on the ground
- Dispatch towing vehicle able to tow existing aircraft – without any modification- with engine off from gate to runway