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A deployable structure is a structure that can change shape so as to significantly change its size.
Examples of deployable structures are
File:Scissor Tower.gif, Scissor-type structure
File:Scissor Tower3.gif, Multiple scissor-type structure
File:Hoberman Mechanism.gif, Simple Hoberman mechanism
File:Radially Fording Structure.gif, Compound Hoberman mechanism
File:Deployable Structure1.gif, Outward folding deployable ring structure
File:Deployable Structure2.gif, Inward folding deployable ring structure
File:Nustar mast deployed v2.jpg, NuSTAR mast in the stowed configuration.
File:Nustar mast deployed.jpg, NuSTAR mast deployed.
University of Cambridge Deployable structures department publications
Linkages (mechanical) Structural engineering
A deployable structure is a structure that can change shape so as to significantly change its size.
Examples of deployable structures are umbrella
An umbrella or parasol is a folding canopy supported by wooden or metal ribs that is mounted on a wooden, metal, or plastic pole. It is usually designed to protect a person against rain. The term ''umbrella'' is traditionally used when protec ...
s, some tensegrity
Tensegrity, tensional integrity or floating compression is a structural principle based on a system of isolated components under compression (physical), compression inside a network of continuous tension (mechanics), tension, and arranged in s ...
structures, bistable structure Bistable may refer to:
* Bistability in physics; something that can rest in two states
* Bistable circuit, also known as a flip-flop or latch
See also
*
{{disambiguation ...
s, some Origami
) is the Japanese art of paper folding. In modern usage, the word "origami" is often used as an inclusive term for all folding practices, regardless of their culture of origin. The goal is to transform a flat square sheet of paper into a ...
shapes and scissor-like structures. Deployable structures are also used on spacecraft for deploying solar panel
A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited electrons when exposed to light. These electrons flow through a circuit and produce direct ...
s and solar sail
Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight on large surfaces. A number of spaceflight missions to test solar propulsion and navigati ...
s.
Space-based deployable structures can be categorized into three primary classes: the first is the articulated structure class wherein rigid members contain sliding contact joints or are folded at hinge points and pivot to deploy, often locking into place. The second class consists of on-orbit assembly where a device is fabricated and/or mechanically joined in space to form the structure. The final class is high strain structures (often composed of High strain composites) wherein the device is dramatically flexed from one configuration to another during deployment.
Gallery
See also
* Engineering mechanics *Four-bar linkage
In the study of Mechanism (engineering), mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed-Kinematic chain, chain movable linkage (mechanical), linkage. It consists of four Rigid body, bodies, called ''bars'' or ''link ...
* Kinematics
In physics, kinematics studies the geometrical aspects of motion of physical objects independent of forces that set them in motion. Constrained motion such as linked machine parts are also described as kinematics.
Kinematics is concerned with s ...
* Linkage (mechanical)
A mechanical linkage is an assembly of systems connected so as to manage forces and Motion, movement. The movement of a body, or link, is studied using geometry so the link is considered to be Rigid body, rigid. The connections between links ...
* Machine
A machine is a physical system that uses power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromol ...
* Outline of machines
The following outline is provided as an overview of and topical guide to machines:
Machine – mechanical system that provides the useful application of power to achieve movement. A machine consists of a power source, or engine, and a mech ...
* Overconstrained mechanism
* Parallel motion
Parallel may refer to:
Mathematics
* Parallel (geometry), two lines in the Euclidean plane which never intersect
* Parallel (operator), mathematical operation named after the composition of electrical resistance in parallel circuits
Science a ...
* Slider-crank linkage
* Compliant mechanism
References
External links
*{{CommonscatinlineUniversity of Cambridge Deployable structures department publications
Linkages (mechanical) Structural engineering