According to Hybrid Air Vehicle’s press release:
The world’s largest aircraft uses innovative technology which combines the best characteristics of fixed wing aircraft and helicopters with lighter-than-air technology to create a new breed of hyper-efficient aircraft. It can stay airborne for up to five days at a time. It will fulfill a wide range of communication, cargo carrying and survey roles in both the military and commercial sectors, all with a significantly lower carbon footprint than other forms of air transport.
Watch the Airlander 10 in action below: