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eVTOL aircraft – Electric Vertical Take-off and Landing

evtol aircraft

RED aircraft works with the eVTOL sector providing an effective solution for propulsion systems

With the transition away from fossil fuels to more sustainable alternatives, aircraft manufacturers look to innovative solutions to power the next generation of aircraft. eVTOL and Urban Air Mobility are blossoming industries that herald the dawn of a new era in aviation.

About eVTOL

An electric vertical take-off and landing (eVTOL) aircraft uses electric power to hover, take off, and land vertically. This technology came about thanks to major advances in electric propulsion (motors, batteries, electronic controllers) and the growing need for new vehicles for urban air mobility (air taxi).

The RED A03 engine is the ideal solution in electrically driven flight.

The RED A03 solves the big three hurdles faced by most eVTOL designers:

  • Limitations on payload
  • Limitations on range
  • Certification

The key to the first two hurdles lies in the RED A03’s unprecedented efficiency. The third is solved due to the RED A03’s approval by several international aerospace governing bodies.

The RED A03 Removes Limitations on Range and Weight

Evtol powerplant propulsion by RED aircraft
concept eVTOL aircraft

A major hurdle in eVTOL designs is weight. A viable range is extremely important. At present, there are only two possibilities to extend the flight range and duration. Larger batteries, or using other means to keep a smaller, lighter battery charged during flight. The RED A03 uses significantly less fuel to provide the same power output. As a result, manufacturers of eVTOL aircraft can offset the weight of the batteries and engine by carrying less fuel for a given mission range.
How much less? Up to 40%.


Faster Certification

RED A03 Certifications

Conceptual designs have to go through a rigorous approval process. Part of that process includes a thorough review of the propulsion systems.
In a highly competitive field, reduced approval time, and therefore reduced time to market, is paramount.


The RED A03 engine is approved by the European Aviation Safety Agency (EASA), the United States Federal Aviation Agency (FAA), New Zealand Civil Aviation Authority (CAA) and the Russian Federal Air Transport Agency (FATA). As a result, manufacturers can reduce approval and certification times in utilising the RED A03 engine in EVTOL aircraft.

RED A03 | The Hybrid Solution

Hybrid solution for eVTOL

The RED A03 can be utilised in eVTOL and Urban-Air-Mobility vehicles in two ways depending on the manufacturers preference in a quest to produce a purely electrical drive:


In this configuration, the RED A03 is mechanically linked to the propeller output shaft. The RED engine provides supplementary power during strenuous flight phases, such as take-off, hover, and in the climb.
This allows for a reduction in battery size and capacity, with electrical power only used at low-demand flight phases.


In this configuration, there is no mechanical link between the piston engine and the propeller shaft.
Instead, the RED A03 is used as a highly efficient auxiliary power unit (APU). The engine drives a generator which, in turn, charges a battery in-flight. The RED A03 allows designers of Urban-Air-Mobility and eVTOL vehicles to use purely electrically driven propulsion systems and reduce battery size.

The RED A03 engine is the ideal choice for eVTOL aircraft manufacturers seeking to gain more range and endurance. Due to its already existing approvals, it could also expedite the approval process allowing eVTOL designers the ability to bring their product to market in a shorter time frame.

Discuss Your Requirements

With an experienced team and expert aviation engineers RED provides a bespoke service to its clients. Contact us to discuss your project here