Aerial drone fleet with docking station; 2+1

the following mandatory minimum requirements: - with take-off weight less than 25 kg. Total weight not exceeding 25 kg, payload capacity more than 2 kg (payload must be interchangeable e.g., RGB, spectral cameras, lidar). Therefore, these kinds of instrumentations should be able to attach onto the

drone. - the maximum weight of the offered docking station is 140 kg - Flight time with maximum payload should be at least 30 min - Minimum flight speed of the drone should be 3 m/s or less. Capability also to fly with up to 8 m/s or more.