Imagine a future where planes fly in formation like birds, saving fuel and reducing costs. This is the vision behind Airbus' fello’fly project, which has just achieved a significant milestone. But is it as simple as following the leader?
Airbus, alongside several airline and operations partners, has successfully navigated a new phase of trials for fello’fly, a revolutionary concept inspired by nature's flying experts: migrating geese. This project aims to harness the power of collaboration in the skies, but with a twist that might raise some eyebrows.
The technique, known as 'wake energy retrieval,' involves one aircraft creating an uplift that boosts the fuel efficiency of the following plane. By flying in this formation, the project aims to reduce fuel consumption by up to 5% on long-haul flights, a significant saving for the aviation industry. But here's where it gets controversial—these fuel savings come with a catch.
The trials, consisting of eight flights over the North Atlantic, were conducted under the SESAR Joint Undertaking GEESE project. The primary goal was to demonstrate the feasibility and safety of guiding two aircraft to meet at an exact location and time while maintaining vertical separation and adhering to air traffic regulations. This 'rendezvous process' is a complex dance that requires precise coordination.
Each trial was a meticulously choreographed operation involving multiple stakeholders. Ground operational control centers, air traffic control centers, and flight crews worked in harmony to ensure the success of this ambitious project. The active involvement of partners like AirNav Ireland, Air France, and Virgin Atlantic, through the EUROCONTROL Innovation hub interface, was vital to proving the concept's safety and practicality.
The fello’fly project, launched in 2019, is a testament to biomimicry's potential in aviation. The GEESE project, initiated in 2023, further advanced this concept by facilitating collaboration and testing in air traffic management. These trials have successfully validated a four-step process that ensures the safety and precision of these intricate maneuvers.
This process starts with Airbus' PAT (Pairing Assistance Tool) calculating new aircraft trajectories and rendezvous instructions in real-time. Then, the airlines' dispatchers, flight crews, and ATC scrutinize these trajectories for operational feasibility. The EUROCONTROL interface ensures transparency, allowing all parties to track the decision-making process. Subsequently, one flight adjusts its route to join its partner, and finally, both crews activate a cockpit function to commit to the precise meeting point.
While these trials have proven the concept's viability, the real test lies ahead. The next step is to implement wake energy retrieval on commercial flights, which will undoubtedly spark further debate and analysis. Will this innovative approach revolutionize fuel efficiency in aviation, or are there unforeseen challenges that could ground this idea?
Stay tuned as Airbus and its partners continue to push the boundaries of aviation, blending nature's wisdom with cutting-edge technology. The sky's the limit, but only time will tell if this formation flying will take off.
