UASystems’ eZELOS Twin-Hybrid eVTOL with Range of 500km

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eZELOS twin hybrid UASystems

Switzerland’s UASystems provides an in-depth look at its eZELOS eVTOL, discussing the challenges in the eVTOL sector, development of the twin-hybrid aircraft, and advantages.

As the industry continues to evolve, it is becoming clear that achieving sustainable and efficient air mobility comes with challenges.

While eVTOLs are promising in terms of their environmental impact, they are limited by the battery limitations that apply to all-electric propulsion systems.

In response, eZELOS is seen as an important addition to the AAM landscape, particularly in the regional air mobility space, and addresses the battery limitations of eVTOLs by offering a hybrid solution suitable for flights up to 500km, even in areas without charging infrastructure. 

eVTOL Challenges

The introduction of eVTOLs represents a significant advance in aviation and promises faster passenger transportation. However, despite their potential, current eVTOLs face significant challenges. While all-electric propulsion systems are laudable for reducing emissions, they face limitations such as limited range, battery wear and tear, and dependence on extensive charging infrastructure. These challenges highlight the need for innovative solutions that reconcile environmental sustainability with operational feasibility.

The development of the eZELOS Twin-Hybrid

eZELOS is an innovative high-tech eVTOL concept that overcomes the limitations of conventional electric aircraft by integrating electric and internal combustion engine technologies. eZELOS was developed by a diverse team of aerospace engineers and embodies the vision of sustainable, efficient air transportation for the modern age. eZELOS harnesses the power of a patent-pending twin-hybrid propulsion system and heralds another aviation innovation that offers long-range, reduced emissions and operational flexibility.

Advantages of eZELOS Twin-Hybrid

Extended range 

Unlike its all-electric counterparts, eZELOS has an impressive range of up to 500km, made possible by its innovative hybrid propulsion system. This extended range opens up various commercial applications, including air taxi services, cargo transportation, and emergency medical rescue. 

Reduced emissions 

With a 50% reduction in CO2 emissions compared to conventional light helicopters, eZELOS represents a significant step towards sustainable aviation. In addition, the integration of hybrid technology enables the use of eFUEL, a renewable, low-emission alternative to conventional aviation fuels, further reducing the environmental impact.

Lower operating costs

By integrating hybrid propulsion technology, eZELOS achieves a remarkable 60% reduction in operating costs compared to conventional rotorcraft. This cost efficiency increases the economic viability of eZELOS for operators and makes regional and urban air mobility more accessible and inclusive. 

Independence from the charging infrastructure 

Integrated ICE generators eliminate the need for extensive charging infrastructure and offer operators operational flexibility and autonomy. Whether deployed in urban centers or remote regions, eZELOS ensures smooth operations, improves efficiency, and reduces logistics costs.

Safety features

eZELOS places great emphasis on passenger safety by integrating redundant propulsion systems, autorotation functions (with electric assistance) and advanced LiFePO4 battery technology, ensuring robust performance in various environmental conditions. This boosts passenger and operator confidence and drives the future of air transportation. 

Certification prospects

The twin-hybrid design of eZELOS is on its way to certification according to strict standards of aviation authorities, such as the European Aviation Safety Agency (EASA Part-CS-27). Building on proven helicopter technology, including a coaxial rotor system, eZELOS complies with existing aviation regulations while setting new standards in innovation. It incorporates unique aspects of the hybrid propulsion system and fuselage-mounted e-fan pylons that ensure compliance with stringent safety and emissions standards, underscoring eZELOS’ commitment to regulatory compliance and industry-leading safety standards.

Outlook on the project’s success

The development and certification of eZELOS is a significant undertaking. Building a competent design organization remains critical. Strategic partnerships and cross industry collaboration will also strengthen the commercial success of eZELOS and foster an ecosystem of innovation and excellence.


In summary, eZELOS twin-hybrid technology represents a defining moment in the eVTOL landscape, offering great range, efficiency, and safety.

By seamlessly integrating electric and combustion engine technologies, eZELOS overcomes the limitations of conventional eVTOLs and paves the way for sustainable, scalable solutions in regional and urban air mobility. With an unwavering commitment to innovation, safety, and environmental protection, eZELOS is poised to redefine the future of aviation and usher in another era of excellence in air transportation.

Posted by Joe Macey Connect & Contact