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Siren Aerospace Orca

Siren Aerospace Orca personal hybrid-electric VTOL (or eVTOL optional) hoverbike


Siren Aerospace
Dusseldorf, North Rhine-Westphalia, Germany

Siren Aerospace was founded in 2021 in Dusseldorf, North Rhine-Westphalia, Germany by Artem Khromov. Khromov has invented a hybrid-electric vertical takeoff and landing one passenger hoverbike for personal use. The company plans to sell their aircraft first for the power sport market, for personal air travel and for the air cargo service.

The Orca is a lightweight, compact one passenger futuristic looking hybrid-electric VTOL aircraft hoverbike type aircraft. The aircraft has an open cockpit, very similar to a motorcycle seating, with motorcycle type handle bar steering with push button thumb controls.

The aircraft has been designed to be extremely safe for the pilot, to be a fun aircraft and to be versatile in the types of missions it can fly. The aircraft is both a modular and a scalable aircraft. The company has made the aircraft so that it will be easy and fast to perform maintenance on the aircraft.

The Orca has canard wings with a long cyclorotor inside each wing or what one could call a cyclorotor-in-wing design. There's a total of four electric motors each powering a cyclorotor. The aircraft sits in tilted up position on tricycle fixed strut landing gear. The front of the aircraft is higher up than the rear of the aircraft. Then when in forward flight, the aircraft transitions to a horizontal position.

The company has named their cyclorotor a rotor-airfoil system. A cyclorotor is a type of rotor with multiple rotorblades, each hinged at the ends to a rotating frame and usually powered at one end to turn the rotors on a horizontal axis. A unique aspect of the cylcorotor is that the speed and direction of thrust can be changed without the need of tilting any aircraft structures because each blade can pitch independently of the other blades. Cyclorotors also provide a high degree of control

The company has stated the aircraft can be flown with little training under the supervision of an experienced and no license is required to fly the aircraft. This easy to fly aircraft is part of the company's missions, to allow people to fly safely and effortlessly. The company also foresees their aircraft being used in both an urban environment and rural areas.

The company expects their aircraft to be customized based on the air mission requirements of the owner of the aircraft. The company first plans on selling their hoverbike to the power sport market first, then for personal air travel and then for air cargo delivery.

It is unknown if a prototype has been made or flown at this time. The company has no information on their website as to when they expect their first production model to be manufactured.

Orca on a trailer

Orca on a trailer

Takeoff and flying pilot positions

Takeoff and flying pilot positions

Orca hoverbike, top rear view

Orca hoverbike, top rear view


  • Aircraft type: eVTOL or hybrid-electric VTOL modular passenger aircraft
  • Piloting: 1 pilot (manual or semi-autonomous)
  • Capacity:
  • Maximum cruise speed:  65 mph
  • Range: Unknown
  • Flight time: Over 1 hour
  • Cruise altitude: Unknown
  • Empty weight: Unknown
  • Maximum payload: Unknown
  • Maximum takeoff weight:
  • Propellers: 4 cyclorotors-in-wing
  • Electric motors: 4 electric motors
  • Power source: Both battery and hybrid-battery
  • Fuselage: Carbon fiber composite
  • Cockpit: Open cockpit, like a motorcycle seat
  • Landing gear: Fixed tricycle struts landing gear

Company Insights: