The cyclogyro, or cyclocopter, is an aircraft configuration that uses a horizontal-axis cyclorotor as a rotor wing to provide lift and sometimes also propulsion and control. In principle, the cyclogyro is capable of vertical take off and landing and hovering performance like a helicopter, while potentially benefiting from some of the advantages of a fixed-wing aircraft.
"Cyclone-2020" during the "Armiya 2021" exhibition.Concept drawing of a cyclogyro.
The cyclogyro wing resembles a paddle wheel, with airfoil blades replacing the paddles. Like a helicopter, the blade pitch (angle of attack) can be adjusted either collectively all together or cyclically as they move around the rotor's axis. In normal forward flight the blades are given a slight positive pitch at the upper and forward portions of their arc producing lift and, if powered, also forward thrust. They are given flat or negative pitch at the bottom, and are "flat" through the rest of the circle to produce little or no lift in other directions. Blade pitch can be adjusted to change the thrust profile, allowing the cyclogyro to travel in any direction without the need for separate control surfaces.[1] Differential thrust between the two wings (one on either side of the fuselage) can be used to turn the aircraft around its vertical axis, although conventional tail surfaces may be used as well.[2]
Animation of cyclogyro wing mechanics.
Historyedit
Jonathan Edward Caldwell took out a patent on the cyclogyro which was granted in 1927, but he never followed it up.[3]
The Schroeder S1 of 1930 was a full-size prototype which used the cyclogyro for forward thrust only.[citation needed]Adolf Rohrbach of Germany designed a full VTOL version in 1933, which was later developed in the US and featured a tall streamlined fuselage to keep the wings clear of the ground.[4][5] Another example was built by Rahn Aircraft in 1935, which used two large-chord rotary wings instead of a multi-blade wheel driven by a 240 hp supercharged Wright Whirlwind[6]
^Development of a Cyclogyro-based Flying Robot with Variable Attack Angle Mechanisms ieee.org
^Simonite, Tom (2008-02-22). "Flying 'paddleboat' may finally take off". NewScientist.com news service.
Further readingedit
"The Cyclogyro", Vertiflight, The American Helicopter Society, 2005, Vol. 51; No. 2, pages 16–19
External linksedit
Media related to Cyclogyro at Wikimedia Commons
January 10, 2024
cyclogyro, cyclogyro, cyclocopter, aircraft, configuration, that, uses, horizontal, axis, cyclorotor, rotor, wing, provide, lift, sometimes, also, propulsion, control, principle, cyclogyro, capable, vertical, take, landing, hovering, performance, like, helicop. The cyclogyro or cyclocopter is an aircraft configuration that uses a horizontal axis cyclorotor as a rotor wing to provide lift and sometimes also propulsion and control In principle the cyclogyro is capable of vertical take off and landing and hovering performance like a helicopter while potentially benefiting from some of the advantages of a fixed wing aircraft Cyclone 2020 during the Armiya 2021 exhibition Concept drawing of a cyclogyro The cyclogyro is distinct from the Flettner airplane which uses a cylindrical wing rotor to harness the Magnus effect Contents 1 Principles of operation 2 History 3 See also 4 References 5 Further reading 6 External linksPrinciples of operation editThe cyclogyro wing resembles a paddle wheel with airfoil blades replacing the paddles Like a helicopter the blade pitch angle of attack can be adjusted either collectively all together or cyclically as they move around the rotor s axis In normal forward flight the blades are given a slight positive pitch at the upper and forward portions of their arc producing lift and if powered also forward thrust They are given flat or negative pitch at the bottom and are flat through the rest of the circle to produce little or no lift in other directions Blade pitch can be adjusted to change the thrust profile allowing the cyclogyro to travel in any direction without the need for separate control surfaces 1 Differential thrust between the two wings one on either side of the fuselage can be used to turn the aircraft around its vertical axis although conventional tail surfaces may be used as well 2 nbsp Animation of cyclogyro wing mechanics History editJonathan Edward Caldwell took out a patent on the cyclogyro which was granted in 1927 but he never followed it up 3 The Schroeder S1 of 1930 was a full size prototype which used the cyclogyro for forward thrust only citation needed Adolf Rohrbach of Germany designed a full VTOL version in 1933 which was later developed in the US and featured a tall streamlined fuselage to keep the wings clear of the ground 4 5 Another example was built by Rahn Aircraft in 1935 which used two large chord rotary wings instead of a multi blade wheel driven by a 240 hp supercharged Wright Whirlwind 6 The cyclogyro has been revisited in the twenty first century as a possible configuration for unmanned aerial vehicles 7 8 9 See also editFanWing Rotary wing aircraft VTOL STOL VSTOL STOVLReferences edit The Development of cyclogyro Archived 2007 10 18 at the Wayback Machine The Cyclogyros Planned paddle wheel aeroplanes Archived from the original on 2018 07 22 Retrieved 2010 09 14 The Fantastically Flighty Gray Goose Shackleton W S November 2 1933 The Rohrbach Rotating Wing Aeroplane Flight XXV 1297 1087 1090 Rohrbach Cyclogyro Rahn Aerofiles Aerodynamics of the Cyclogyro aps org Development of a Cyclogyro based Flying Robot with Variable Attack Angle Mechanisms ieee org Simonite Tom 2008 02 22 Flying paddleboat may finally take off NewScientist com news service Further reading edit The Cyclogyro Vertiflight The American Helicopter Society 2005 Vol 51 No 2 pages 16 19External links edit nbsp Media related to Cyclogyro at Wikimedia Commons Retrieved from https en wikipedia org w index php title Cyclogyro amp oldid 1043910352, wikipedia, wiki, book, books, library,
