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Chatillon Whisper (concept design)

Thibault Chatillon's Whisper ems eVTOL concept design aircraft


Whisper (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 Whisper is an eVTOL air ambulance aircraft concept design which is flown by one pilot and holds one medical attendant, one patient, and appropriate medical equipment and supplies. The aircraft has a spacious cabin, has wrap around windows, there are 12 propellers, 12 electric motors and has fixed skid landing gear. The propellers are configured in a circular fashion by using eight booms attached on a circular hub where the hub is attached to the top of the fuselage.

The fuselage has rear doors allowing easy crew and patient entry and exiting. The aircraft has a small foot print permitting the aircraft to land in small unprepared urban open spaces or any prepared landing pads during emergency situations.


  • Aircraft type: eVTOL passenger emergency medial service concept design aircraft
  • Piloting: 1 pilot
  • Capacity: 2 passengers (1 attendant, 1 patient)
  • Propellers: 12 propellers
  • Electric motors: 12 electric motors
  • Power source: Batteries
  • Fuselage: Carbon fiber composite
  • Windows: Wrap around windows
  • Landing gear: Fixed skid type landing gear
  • 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.

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