A Network Rail team has flown a drone Beyond Visual Line of Sight (BVLOS) for 25 kilometres over dry land – believed to be the furthest such civilian drone flight in Britain.
The proof-of-concept flight – which took place on Wednesday 27 October from Bicester along the East West Railway – is the culmination of 18 months of work. It is a significant step forward in terms of how drones can be used to inspect the railway safely, quickly and cost-effectively, Network Rail said.
Until now, drones have only flown above the railway when in clear sight of the operator, usually only for four or five kilometres at a time. While this can still be a helpful tool to inspect rail infrastructure, it requires the team involved to set up multiple times at different locations. The ability to fly BVLOS enables Network Rail’s air operations team to inspect the railway over a much larger area while saving valuable time and costs.
Rikke Carmichael, Network Rail head of air operations, said: “While flying BVLOS will ultimately provide us with much greater capability, it is worth emphasising that this was a proof-of-concept flight, and that a shift to using BVLOS as business as usual will take some time.
“Nonetheless, yesterday was an important milestone and I’d like to thank my team for all their hard work on this project over the last couple of years. We’ll now turn our attention to agreeing a strategy for using drones both VLOS and BVLOS, after which we will want to engage with industry for the next exciting phase of BVLOS becoming another routine service the air ops team provides the business.”
A Network Rail helicopter also flew alongside the drone to test whether or not the two could work together, and whether their respective systems recognised each other. It was proved that they did work effectively together. Data captured by the helicopter will be used to create a digital twin of the railway that was flown over.