Function
What the mechanism does. In the insect: The largest area from the smallest protected stow, measured from the wing at rest and in flight.
In design: A surface that collects only when it is useful, and is safe when it is not.
The theory
A bionic design theory
Bionics has carried what living things do into technology since 1958. It has not carried what they look like, how they behave, the systems they belong to, or what they mean. This theory does.
Five levels of abstraction
The standards of bionics define abstraction as removing everything irrelevant to the function. The result is a field that produces mechanisms, not products, and products that are rarely wanted.
In transport, the lesson of the last twenty years runs the other way: the vehicles that moved a whole industry were wanted first and efficient second. So the theory abstracts a living system at five levels, and keeps all five in view at once.
Form
The shapes the function takes. In the insect: A pointed forewing over a broad hindwing; veins that stiffen a membrane a fraction of a millimetre thick; a wing convex when closed that flattens as it opens.
In design: Ribs that carry load in plain sight. Two finished forms, closed and open.
Behaviour
How the living system acts over time. In the insect: A dragonfly perches with its wings spread to warm, turns toward or away from the sun, and folds before weather.
In design: Surfaces that track the sun, close for storms and learn the routines of the people who use them.
System
How it relates to its surroundings. In the insect: A termite’s nuptial flight releases thousands of identical individuals that each deploy alone. A wing is plumbed into the body that carries it.
In design: Products made to be stacked and released in numbers; vehicles and places that share energy; wings that carry coolant and sensing as well as cells.
Meaning
What the form says to people. In the insect: The resting insect reads as calm; the open one as alive.
In design: The wonder of a thing that unfolds like a living thing, and the pride of owning it. This is the level bionics has left out.
A pattern language
Each fold becomes a pattern
Every fold type in the atlas is recorded at all five levels, with its biological evidence and the design rules it implies. An abridged example, the tented roof:
| Function | About twice the footprint, from rigid framed wings with no cover. |
| Form | A small, pointed forewing over a large hindwing; a strong leading-edge vein; veins framing the cells. |
| Behaviour | The wings sweep back flat over the body to rest; a hub can turn the whole set to follow the sun. |
| System | One hinge housing carries every wing and its wiring. |
| Meaning | At rest it reads as calm and streamlined; open, as alive. |
| Rules | Simple flat swings about one hinge. Front wings nest under rear wings. Only one pair shows when closed. |
Three guards
Against shallow copying
Learn the mechanism, not the shape
A borrowed form works when it solves the same physical problem. A borrowed look rarely does.
Check each level against the biology
Not against the image of it. Appealing stories about nature have a habit of turning out to be wrong.
State the energy in numbers
So that beauty never stands in for performance. A wing that costs more to open than it collects is a worse roof.
The research
Four questions
The theory is being tested as design research. These are the questions it has to answer.
The theory
What does a living system offer a designer at each of the five levels, and by what operations is each level abstracted and carried across without losing the others?
Abstraction
Which insect fold types, measured for design rather than for taxonomy, survive transfer to a product at human scale, and what must the measurement record for that judgement to be made?
Transfer
When the theory is applied across scales, from a small product to a vehicle to a building to something off-world, which parts of the transfer hold and which belong to one product?
Evaluation
Do products made this way read as beautiful and wanted, and can that judgement be traced back to the level at which the living form was abstracted?
Research design
One step down from the engineers
Mainstream bionics runs on objectivism and measurement, because it transfers function. A theory that also transfers form, behaviour, system and meaning cannot be reached from there.
So the work follows Michael Crotty’s four elements one row down: knowledge made with the object, interpreted, built through cycles of making. Measurement is still used, as a method, not a belief about what a wing is. Each element branches into the next like a vein.
Epistemology
ConstructionismDesign knowledge is made in the encounter between designer and specimen. A fold type is not found in a wing; it is read from it and remade as a product.
Theoretical perspective
InterpretivismCarried by phenomenology, how wings and the things drawn from them are experienced, and hermeneutics, the plates and texts read and re-read.
Methodology
Action researchThe spine: analyse, abstract, transfer, evaluate, cycle after cycle.
Grounded theoryThe five levels coded out of the fold data and the work.
Phenomenological researchFor beauty and meaning.
Methods
MeasurementWings traced and scaled from natural-size plates.
Comparative analysisFold types across orders, designs across scales.
Case study and observationThe designer in the build, reflection in action.
InterviewCritique from entomologists, engineers and designers.
What it contributes
Claimed, and not claimed
A theory that reaches meaning
No published bionic theory makes meaning a level of abstraction with its own operations, alongside function, form, behaviour and system. The field’s own reviews name the gap.
An atlas measured for designers
Insect folds are classified for evolutionary history, or studied one species at a time for engineering. A cross-order atlas that records what a designer needs, the fold ratio, crease geometry, joint compliance, stowed envelope, deployment energy and cycle life, does not exist yet.
Things that are made
Working wings at one-fifth scale from three fold types, as proof that the theory produces something.
Not claimed
That insect folds can make a deployable panel: research groups in Kyushu, Zurich and at the European Space Agency have shown that for fans, drone wings and spacecraft. Or that solar cells can go on a vehicle: several companies have done that. The claim is narrower, and sits between those fields.
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