A co-rotational scroll machine

A co-rotating scroll machine operable as compressor or expander, comprises a transmission and guidance mechanism (9,10) for first and second scroll plates (7,8), having three transmission and guidance units (9,10) uniformly distributed around the scroll plates towards the periphery thereof. Each transmission and guidance unit comprises a male element (9) mounted on one of the scroll plates and a facing female element (10) mounted on the facing scroll plate. Each transmission and guidance unit (9,10) comprises an internal ring (11) mounted for angular displacement in the opening of the female element (10), the internal ring having therein a slot (18) wherein the male element (9) of the transmission and guidance unit slides. The male elements (9) of the three transmission and guidance units (9,10) are supported and guided by respective support elements (13) on a common external guide ring (11). A liquid injection system comprises a liquid channel (20) which is connected with bleed holes (21).

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Jürg Alexander Schiffmann
2018
Patent

Abstract

Official source

https://infoscience.epfl.ch/record/273068?ln=en

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Guidance system

A guidance system is a virtual or physical device, or a group of devices implementing a controlling the movement of a ship, aircraft, missile, rocket, satellite, or any other moving object. Guidance is the process of calculating the changes in position, velocity, altitude, and/or rotation rates of a moving object required to follow a certain trajectory and/or altitude profile based on information about the object's state of motion.

Missile guidance

Missile guidance refers to several methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg). These guidance technologies can generally be divided up into a number of categories, with the broadest categories being "active", "passive", and "preset" guidance.

Angular displacement

The angular displacement (symbol θ, , or φ), also called angle of rotation or rotational displacement, of a physical body is the angle (in units of radians, degrees, turns, etc.) through which the body rotates (revolves or spins) around a centre or axis of rotation. Angular displacement may be signed, indicating the sense of rotation (e.g., clockwise); it may also be greater (in absolute value) than a full turn. When a body rotates about its axis, the motion cannot simply be analyzed as a particle, as in circular motion it undergoes a changing velocity and acceleration at any time.