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 rot ...

, 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 aero ...

, 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 ...

, the rotor of a turbine powered by fluid pressure * Rotor (crank), a variable-angle bicycle crank *Rotor (brake), the disc of a disc brake, 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 *

Rotor (distributor) A distributor is an enclosed rotating switch used in spark-ignition internal combustion engines that have mechanically timed ignition. The distributor's main function is to route high voltage current from the ignition coil to the spark plu ...

, 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)

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 1 ...

, 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 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 ri ...

, 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 j ...

, a rare liver disorder

Mathematics

* Rotor (mathematics), 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 den ...

, 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), 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), 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. ''R.O.T.O.R.'' (also known as ''Blue Steel'' and ''R.O.T.O.R.: Police Force'') is a 1987 American science fiction action film starring Richard Gesswein, Jayne Smith and Margaret Trigg. The film has been described as a low-budget copy of ''The Te ...

'', a 1987 science fiction/action movie {{disambiguation