Rotor may refer to:

Science and technology

Engineering

Rotor (electric) The rotor is a moving component of an electromagnetic system in the electric motor, electric generator, or alternator. Its rotation is due to the interaction between the windings and magnetic fields which produces a torque around the rotor's a ...

, the non-stationary part of an alternator or electric motor, operating with a stationary element so called the stator *

Helicopter rotor A helicopter main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerody ...

, the rotary wing(s) of a rotorcraft such as a helicopter *

ROTOR Rotor may refer to: Science and technology Engineering *Rotor (electric), the non-stationary part of an alternator or electric motor, operating with a stationary element so called the stator * Helicopter rotor, the rotary wing(s) of a rotorcraft ...

, a former radar project in the UK following the Second World War *

Rotor (turbine) A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating e ...

, the rotor of a turbine powered by fluid pressure *

Rotor (crank) The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear whee ...

, a variable-angle bicycle crank *Rotor (brake), the disc of a

disc brake A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc or a "rotor" to create friction. This action slows the rotation of a shaft, such as a vehicle axle, either to reduce its rotational speed or to hol ...

, in U.S. terminology * Rotor (brake mechanism), a device that allows the handlebars and fork to revolve indefinitely without tangling the rear brake cable - see

Detangler The detangler, Gyro or rotor is an invention for the freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up. A detangler is usually only used for the rear brake cable. The ...

* Rotor (distributor), a component of the ignition system of an internal combustion engine *

Pistonless rotary engine A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does. Designs vary widely but typically involve one or more rotors, sometimes called rotary pistons. Although many different ...

Rotor (antenna) An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally plac ...

Computing

Rotor machine In cryptography, a rotor machine is an electro-mechanical stream cipher device used for encrypting and decrypting messages. Rotor machines were the cryptographic state-of-the-art for much of the 20th century; they were in widespread use in the 19 ...

, the rotating wheels used in certain cipher machines, such as the German Enigma machine ** Rotor (Enigma machine), a rotating part of the German Enigma machine *

Rotor (software project) The Shared Source Common Language Infrastructure (SSCLI), previously codenamed Rotor, is Microsoft's shared source implementation of the CLI, the core of .NET. Although the SSCLI is not suitable for commercial use due to its license, it does make ...

, the former code name for Microsoft's shared source implementation of its Common Language Infrastructure

Chemistry

* The rotating part of a

centrifuge A centrifuge is a device that uses centrifugal force to separate various components of a fluid. This is achieved by spinning the fluid at high speed within a container, thereby separating fluids of different densities (e.g. cream from milk) or ...

, which also holds the samples *

Rigid rotor In rotordynamics, the rigid rotor is a mechanical model of rotating systems. An arbitrary rigid rotor is a 3-dimensional rigid object, such as a top. To orient such an object in space requires three angles, known as Euler angles. A special rigi ...

, a mathematical model for rotating systems (usually molecules)

Medicine

Rotor syndrome Rotor syndrome (also known as Rotor type hyperbilirubinemia) is a rare cause of mixed direct (conjugated) and indirect (unconjugated) hyperbilirubinemia, relatively benign, autosomal recessive bilirubin disorder characterized by non-hemolytic jau ...

, a rare liver disorder

Mathematics

Rotor (mathematics) A rotor is an object in the geometric algebra (also called Clifford algebra) of a vector space that represents a rotation about the origin. The term originated with William Kingdon Clifford, in showing that the quaternion algebra is just a s ...

, an even-graded multivector used to produce rotations and some other affine transformations *

Curl (mathematics) In vector calculus, the curl is a vector operator that describes the infinitesimal circulation of a vector field in three-dimensional Euclidean space. The curl at a point in the field is represented by a vector whose length and direction denot ...

, known as rotor in some countries, a vector operator that shows a vector field's rate of rotation

Other uses

SC Rotor Volgograd SC Rotor Volgograd (russian: СK Ротор) is a Russian professional football club from the large city of Volgograd, Volgograd Oblast (formerly Stalingrad). The club will play in the third-tier Russian Football National League 2 in the 2022– ...

, a Russian football club *

Rotor (Sonic the Hedgehog) ''Sonic the Hedgehog'' was an American comic book series published by Archie Comics, in partnership with Sega. The series was based on Sega's video game franchise, as well as on the 1993 animated series of the same name. After initially be ...

, a fictional character from the Sonic the Hedgehog universe *

Rotor (ride) The Rotor is an amusement ride designed and patented by German engineer Ernst Hoffmeister in 1948. The ride was first demonstrated at Oktoberfest 1949, and was exhibited at fairs and events throughout Europe, during the 1950s and 1960s. The ride ...

, the trade name for an amusement ride *

Rotor (meteorology) In meteorology, lee waves are atmospheric stationary waves. The most common form is mountain waves, which are atmospheric internal gravity waves. These were discovered in 1933 by two German glider pilots, Hans Deutschmann and Wolf Hirth, above ...

, a turbulent horizontal vortex that forms in the trough of lee waves *Rotor, a space colony in Isaac Asimov's novel ''

Nemesis In ancient Greek religion, Nemesis, also called Rhamnousia or Rhamnusia ( grc, Ῥαμνουσία, Rhamnousía, the goddess of Rhamnous), was the goddess who personifies retribution, a central concept in the Greek world view. Etymology The n ...

'' *'' R.O.T.O.R.'', a 1987 science fiction/action movie {{disambiguation