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What is the origin of the term swashplate as applied to helicopters?
Wiki User
∙ 16y ago
Technical terms are difficult to find a definition. But I worked 11 years at Bell Helicopter. The Swashplate refers to point on the controls that lead up to the rotor blades where the non-rotating controls are converted to the Rotating Controls. Rotating Controls are the two rods(for a 2-bladed Bell helicopter) that are attached to the base of the Rotor blades and come down, parallel to the Rotor Mast. These two control rods are moving around the mast with the blades. At the bottom of these rods, they are attached to a rotating disc. This disc is mounted on a gimbled platform that usually has 3 non-rotating controls that come UP from inside the fuselage. There are 3 because one control causes the swashplate to tilt left and one causes it to tilt forward and one fixes the 3rd leg of the triangle. Basically, as the pilotcontrol inputs cause the Swashplate to tilt, the path of the Main Rotor blades (or the tip path plane) will follow the tilt of the swashplate but delayed by 90 degrees. A Technical explanation on helicopter controls http://ourworld.compuserve.com/homepages/chris_berardi/Helisetup.htm More info http://avia.russian.ee/theory/control.html http://www.aerospaceweb.org/question/helicopters/q0084.shtml http://www.thaitechnics.com/helicopter/heli_intro.html Photos of actual parts for a 1-seat helo. http://www.vortechonline.com/awparts/ R/C Modelparts are not different from full-size helos.
http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=EEK http://prism2.mem.drexel.edu/~todd/heli_components.html Great illustration of R/C Model Swashplate http://www.whirledair.com/parts.html Illustration shows the top piece that rotates with 2 control rod attachments and the bottom half that is fixed with 3 attachments. http://www.brentfordrc.co.uk/scripts/prodView.asp?idProduct=961
Wiki User
∙ 16y ago
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