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Chatillon Gyrobulance (concept design)

Thibault Chatillon Gyrobulance eVTOL emergency medical service concept design aircraft


Gyrobulance (concept design)
Thibault Chatillon (inventor)
Lyon, Auvergne-Rhone-Alpes, France

Since 2007, Thibault Chatillon has been working with, inventing, flying and designing drones, including designing passenger electric vertical takeoff and landing (eVTOL) aircraft. Chatillon is based in Lyon, Auvergne-Rhone-Alpes, France. In addition, he's designed the first vertiport network in France for eVTOL aircraft and drones. Chatillon is also working on innovative eVTOL aircraft design concepts for advanced aerial mobility (AAM) and air racing. On several of Chatillon's social media accounts, his handle is Tibo Cat Lion.

The Gyrobulance emergency medical service eVTOL concept design aircraft holds two passengers. The aircraft can have one pilot and one patient, or if the aircraft is flown remotely, the aircraft will hold one medical attendant and one patient. The aircraft has a cruise speed of 80 km/h (50 mph), a maximum cruise speed of 160 km/h (99 mph), a flight time 35 minutes and its cruise altitude is 3,000 meters (9,843 feet).

The aircraft has eight ducted propellers, eight electric motors and the entire ducted propeller assembly is connected to an oval shaped boom which is connected to the front and rear of the oval fuselage using gimbals. The ducted propeller assembly can tilt left and right while keeping the fuselage stable along the roll axis of the aircraft.

The top of the oval fuselage is covered entirely with polygon shaped windows. The passengers enter and exit the aircraft from the sides. The Gyrobulance's empty weight is 480 kg (1,058 lb), carries a maximum payload 220 kg (485 lb) and has a maximum takeoff weight 700 kg (1,543 lb). The aircraft lands on the bottom of the fuselage. In case of emergency, the eVTOL is equipped with a whole aircraft ballistic parachute.


  • Aircraft type: eVTOL concept design air ambulance
  • Piloting:  Piloted, remote or autonomous (when autonomous technology has matured)
  • Capacity: 1 pilot, 1 patient (or flown remotely, 1 medical attendant, 1 patient)
  • Cruise speed: 80 km/h (50 mph)
  • Maximum cruise speed: 160 km/h (99 mph)
  • Flight time: 35 minutes
  • Cruise altitude: 3,000 meters (9,843 feet)
  • Empty weight: 480 kg (1,058 lb)
  • Maximum payload: 220 kg (485 lb)
  • Maximum takeoff weight: 700 kg (1,543 lb)
  • Propellers: 8 ducted propellers (The ducted propeller assembly is connected to an oval shaped boom that is connected to the front and rear of the fuselage using gimbals.)
  • Electric motors: 8 electric motors
  • Power source: Batteries
  • Fuselage: Carbon fiber composite
  • Windows: The entire oval fuselage is covered with polygon windows, except for the floor
  • Landing gear: The aircraft lands on its fuselage
  • Safety features: Distributed Electric Propulsion (DEP), provides safety through redundancy for its passengers and/or cargo. DEP means having multiple propellers (or ducted fans) and motors on the aircraft so if one or more propellers (ducted fans) or motors fail, the other working propellers (or ducted fans) and motors can safely land the aircraft. There are also redundancies in the sub-systems of the aircraft. In case of an emergency, it is equipped with a whole aircraft ballistic parachute.

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