HY4

The DLR HY4 is an electrically powered, emission-free passenger aircraft that was designed to make transportation more sustainable. The aircraft is designed to travel with low noise, and is the first four-seater passenger aircraft.

The HY4 is powered by hydrogen fuel cell system and electric propulsion to be silent, environmentally friendly, and to have more range than previous iterations.

Some of the companies that partnered to create the HY4 and provide research and development includes H2FLY, DLR, Hydrogenics, Stuttgart Airport, Pipistrel, and the Ulm University.

The aircraft can be used as an electric air taxi for regional transportation, and can serve as an alternative to conventional transportation. The aircraft has a twin-fuselage design that is based on the Pipistrel Taurus G4 aircraft. Each fuselage has the space for two passengers, and is connected by a mid-wing section integrating the propulsion unit. The craft has a propeller at the front of the craft, and the hydrogen fuel is stored at a pressure between 4,300PSI and 5,800PSI in two carbon-fiber tanks each located in the two fuselages.