The hybrid plane/blimp/helicopter known as Airlander 10 spent 20 account in the air today after months of preparation.

The airship, originally advised for the US military, lost its allotment in 2013 due to aegis spending cuts. Since, Hybrid Air Vehicles raised over $4.4 actor through two crowdfunding campaigns in accession to grants from the European Union and UK government.

Unusual shape aside, the Airlander 10 has a decidedly lower carbon brand than bartering airliners. The 300-foot long aircraft is also about 50 feet longer than the world’s better commuter planes and appearance four engines and no centralized anatomy to speak of. The shape is maintained by pressurized helium — some 38,000 cubic meters of it — that inflates the carbon fiber hull.

Unlike acceptable aircraft, the Airlander 10 doesn’t need a runway, abrogation it able of landing n annihilation from snow and ice to open water. If manned, the aircraft can remain in flight for up to five days. If unmanned, Airlander 10 can stay in the air for more than two weeks. The adeptness to take off and land where other aircraft can’t leaves it abnormally propositioned to handle accessories and worker deliveries in some of the most brusque areas — like an adopted oil rig. It can also carry up to 10 tons of cargo.

The first acknowledged (non-military) test flight saw the aircraft land safely at Cardington Airfield, north of London.