Overview

The way to Zero-emission passenger flights
HY4

The HY4 – the world’s first four-seater passenger aircraft powered solely by a hydrogen fuel cell system and electric propulsion – marks a milestone on this path.

Partner

Strong partners have joined forces to make the first fuel cell passenger aircraft a reality:

The Vision

With more than 60 regional and international airports, Germany has a well-established, extensive network and the necessary infrastructure for the implementation of the ‘electric air taxi’ concept.

About HY4

Passenger air travel with low noise, particulate matter or carbon dioxide – emission-free flight – is currently being transformed from a vision to a reality. The HY4 – the world’s first four-seater passenger aircraft powered solely by a hydrogen fuel cell system and electric propulsion – marks a milestone on this path. Electric flight with the HY4 is silent, environmentally friendly, has greater range and is safer than its predecessors. Longstanding experience in battery, fuel cell and hydrogen technology research in the aviation and energy sectors make the partners experts in the fields of ‘More Electric Aircraft’ (MEA) and ‘All Electric Aircraft’ (AEA). Fuel cells can be used in many areas of aviation. Common to all applications is the operation at high altitudes, at low air pressure and at low ambient temperatures. Requirements for safety and reliability are exceptionally stringent.

Our Team

Strong partners of industry, research and development
H2FLY
H2FLY
Operator of HY4
H2Fly will operate the HY4 and will be responsible for the certification process.
DLR
DLR
Scientific leader
DLR is the national aeronautics and space research centre of the Federal Republic of Germany. Its extensive research and development work in aeronautics, space, energy, transport and security is integrated into national and international cooperative ventures. In addition to its own research, as Germany’s space agency, DLR has been given responsibility by the federal government for the planning and implementation of the German space programme. DLR is also the umbrella organisation for the nation’s largest project management agency.
Hydrogenics
Hydrogenics
Fuel Cell provider
Hydrogenics, as the global market leader in fuel cell technology, is contributing its knowledge.
Flughafen Stuttgart
Flughafen Stuttgart
Home Airport
Stuttgart Airport has offered to be the home airport of the HY4 and is helping to address issues regarding the integration of electric aircraft into the air traffic system.
Pipistrel
Pipistrel
Aircraft Designer
Pipistrel has extensive experience in aircraft construction and electrical components and is the World leader in development and production of UL class powered gliders and Advanced light aircraft.
Uni Ulm
Uni Ulm
Experts of hybridisation
The University of Ulm is contributing its expertise in power electronics, hybridisation and electrical propulsion technology.

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