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Dr Brown will present an updated version of his paper, titled "Are eVTOL Aircraft Inherently more susceptible to the Vortex Ring State than Conventional Helicopters?" at this year's EASA Rotorcraft and VTOL Symposium, to be held from 8 - 9 November 2022 in Cologne, Germany.
The paper builds on his earlier presentation at the European Rotorcraft Forum by showing some of the real problems that might be induced in the design of eVTOL aircraft if their physical characteristics and limitations are not held firmly in mind when drawing up the regulations governing the vertiports from which they will operate.
The tab below will take you to the schedule for the conference - if you're going to be at the event, please do come along and say hello!
Dr Brown has presented a paper titled "Are eVTOL Aircraft Inherently more susceptible to the Vortex Ring State than Conventional Helicopters?" at this year's European Rotorcraft Forum, held from 6 - 8 September 2022 in Winterthur, Switzerland.
The Vortex Ring State is a particularly hazardous operating regime that a rotorcraft can enter into during the critical descent and landing phases of flight. Richard's paper shows how our current understanding of the phenomenon applies to the design of modern eVTOL aircraft, and highlights a range of effects that designers and operators should be aware of in order to ensure the safety of these vehicles.
The tab below will take you to our VRS Resource page from where you can download a copy of his paper.
to the Royal Aeronautical Society
During his online lecture to the Bedford branch of the Royal Aeronautical Society, Dr Brown examined our current understanding of the Vortex Ring State - a particularly hazardous operating regime that a rotorcraft can enter into during the critical descent and landing phases of flight.
He first told the story of how data from laboratory and numerical experiments was combined in the mid-'00s to change our understanding of the basic mechanisms at the heart of the phenomenon. As an illustration of how mathematical abstraction can lend deep insights into practical engineering problems, he then showed how a theory was developed that is now used throughout the world to help aircraft designers to understand the susceptibility of their creations to this potentially dangerous aerodynamic phenomenon.
The specific case of the V-22 Osprey tilt-rotor was covered in detail, and Dr Brown then went on to discuss the implications of his research for the next generation of rotorcraft that are on the drawing boards.
The tab below will take you to a recording of the event.
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