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Ornicopter

Ornicopter

A torqueless helicopter originally developed by the Faculty of Aerospace Engineering at Delft University of Technology The Netherlands. This helicopter can be run as a single-rotor, tailess configuration i.e. not needing a tail rotor which can deliver particular advantages (no tail-rotor weight and failure risk) and disadvantages (flight envelope).

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Edits on 25 May, 2019
Will Suter"Added link"
Will Suter edited on 25 May, 2019
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Development of the Ornicopter is an active area of research at the Delft University of TechnologyDelft University of Technology.

Edits on 7 May, 2019
Jed Christiansen"Holten is part of a name, and doesn't refer to the place called Holten."
Jed Christiansen edited on 7 May, 2019
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The tail rotor found on conventional helicopters has always been considered a 'necessary evil'. Without it the helicopter is uncontrollable in yaw, yet the tail rotor is an expensive feature, consuming a lot of power, and it provides only marginal control authority under unfavorable wind conditions. Tail rotors are also noisy, vulnerable and dangerous to bystanders. The ideal solution to all these problems would be to design a main rotor that eliminates the need for a tail rotor. Professor van HoltenHolten started developing in 2002 a new design for a rotary wing. The Ornicopter is a single rotor helicopter without a reaction torque — it is fully controlled using only one rotor.

pranav ‎
pranav ‎ approved a suggestion from Golden's AI on 7 May, 2019
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The tail rotor found on conventional helicopters has always been considered a 'necessary evil'. Without it the helicopter is uncontrollable in yaw, yet the tail rotor is an expensive feature, consuming a lot of power, and it provides only marginal control authority under unfavorable wind conditions. Tail rotors are also noisy, vulnerable and dangerous to bystanders. The ideal solution to all these problems would be to design a main rotor that eliminates the need for a tail rotor. Professor van HoltenHolten started developing in 2002 a new design for a rotary wing. The Ornicopter is a single rotor helicopter without a reaction torque — it is fully controlled using only one rotor.

Jed Christiansen
Jed Christiansen edited on 7 May, 2019
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The tail rotor found on conventional helicopters has always been considered a 'necessary evil'. Without it the helicopter is uncontrollable in yaw, yet the tail rotor is an expensive feature, consuming a lot of power, and it provides only marginal control authority under unfavorable wind conditions. Tail rotors are also noisy, vulnerable and dangerous to bystanders. The ideal solution to all these problems would be to design a main rotor that eliminates the need for a tail rotor. Professor van Holten started developing in 2002 a new design for a rotary wing. The Ornicopter is a single rotor helicopter without a reaction torque — it is fully controlled using only one rotor.

The secret to the Ornicopter concept is in rotor blade flapping. The rotor blades are forced to flap up and down once per revolution, thus generating a propulsive force on the blades that drives the rotor around the hub. By increasing or decreasing the amplitude of this flapping movement, the yaw motion of the fuselage can be controlled.

The first analyses of the Ornicopter showed that it had a similar power requirement to a conventional helicopter, as well as very similar longitudinal and lateral stability and controllability characteristics to a conventional helicopter. However, the Ornicopter generated higher vibratory loads than in a conventional helicopter, and its performance was strongly limited by the stall effect.

Development of the Ornicopter is an active area of research at the Delft University of Technology.

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2002
Edits on 27 Apr, 2019
Jude Gomila
Jude Gomila edited on 27 Apr, 2019
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Ornicopter: A Bird-like Tailless Helicopter - Vertical Flight Library & Store

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Jude Gomila
Jude Gomila edited on 27 Apr, 2019
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Ornicopter

A torqueless helicopter originally developed by the Faculty of Aerospace Engineering at Delft University of Technology The Netherlands. This helicopter can be run as a single-rotor, tailess configuration i.e. not needing a tail rotor which can deliver particular advantages (no tail-rotor weight and failure risk) and disadvantages (flight envelope).

Table

Title
Author
Link
Type

Development of a Radio-Controlled Ornicopter: a single rotor helicopter without reaction torque

Monique Heiligers, Rolf Kuiper, Theo Van Holten, Stijn Van Den Bulcke

Jude Gomila
Jude Gomila edited on 26 Apr, 2019
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Jude Gomila
Jude Gomila edited on 26 Apr, 2019
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Topic thumbnail

Ornicopter

A torqueless helicopter originally developed by the Faculty of Aerospace Engineering at Delft University of Technology The Netherlands. This helicopter can be run as a single-rotor, tailess configuration i.e. not needing a tail rotor which can deliver particular advantages (no tail-rotor weight and failure risk) and disadvantages (flight envelope).

Article

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Designing the Ornicopter, a tailless helicopter with active flapping blades: a case study

Jia Wan, Marilena D Pavel

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Jude Gomila"Initial topic creation"
Jude Gomila created this topic on 26 Apr, 2019
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 Ornicopter

A torqueless helicopter originally developed by the Faculty of Aerospace Engineering at Delft University of Technology The Netherlands. This helicopter can be run as a single-rotor, tailess configuration i.e. not needing a tail rotor which can deliver particular advantages (no tail-rotor weight and failure risk) and disadvantages (flight envelope).

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