Introduction
A plane for science, a project for humanity
Our stratospheric solar-electric airplane is more than just an aircraft — it’s a catalyst for innovation, a challenge to the status quo of aviation.
Designed by Calin Gologan and German company Elektra Solar GmbH, this revolutionary aircraft is daring and finely engineered. From the optimisation of solar cells to thermal management in extreme conditions, each technical challenge we take up paves the way for a future where performance goes hand in hand with sustainability.
By exploring the upper atmosphere, SolarStratos is not only flying higher, but we are also flying for a greater purpose. Our mission in this fragile and little-studied environment is not just a technical achievement, it’s an active contribution to understanding and preserving our atmosphere.
Propelled by solar energy, emitting zero pollution, our aircraft will be able to take unprecedented measurements at altitudes that are rarely reached. This invaluable data will contribute to scientific research and guide the development of solutions for a more sustainable future.
Beyond science, SolarStratos is a symbol of hope and inspiration. By sharing our challenges, our failures and our successes, we invite everyone to be part of this adventure. We are demonstrating that thanks to human ingenuity and our collective commitment to a greener, cleaner sky, no frontier — not even that of the stratosphere — is insurmountable.
Join us on this odyssey towards a future where aviation is no longer a threat to our planet, but a tool for its preservation and exploration.
At a glance
Characteristics
The aircraft’s wingspan is 24.8 m wide and 8.5 m long.
Propulsion
Solarstratos is propelled by a double electric motor, 50 kW continuous (70 kW max) running at max 2’200 rpm. The propeller has 3 blades and a 1.9 meter diameter.
Canopy
Our plane’s canopy will protect the pilot during the flight and gives the plane its aerodynamic shape to optimize air resistance.
Space suit
The space suit has been developped by our partner Zvezda. Weighing 12 kg, pressurized, it will protect Raphaël from the very low air pressure in the stratosphere and will provide the oxygen required to breathe in high altitude.
Seats and cockpit
The cockpit is equipped with the usual aeraunautical instruments as well as specific equipment for solar and electric flight. During the flight in the stratosphere, the rear seat will be used to accommodate the space suit equipment. The cockpit comprises two seats placed in tandem (one behind the other).
Solar cells
The solar field of about 22 square meters, on the wings of SolarStratos, is covered with latest generation solar cells, with an efficiency of 22-24%. They will provide energy to the lithium-ion batteries which have a total capacity of of between 11 and 28 kWh, depending on the configuration.
HB-SXA
The fuselage and wings are made entirely of carbon fiber, ensuring lightness and strength. The very large wingspan allows for flying at low speed.
Be part of it
Experience this 21st century eco-exploration
By becoming a member of the “SolarStratos” club, you help promote and support our challenge.
