By Ritvik Ravikiran and Timur Maryia
The ancient skill of paper folding, known as origami, has made its way into aeronautical engineering. For the past forty years, scientists have examined kinetic origami to look for folding patterns or methods that might have practical uses in the aerospace engineering industry. Because complex 3D structures can be folded into small forms using origami principles, they are a good fit for aerospace applications where mass and volume are limited. Origami's capacity to compactly and efficiently fold enormous structures into small spaces has been leveraged by engineers to create novel solutions, such as adaptable aircraft designs, deployable space infrastructures, and compact exploration robots. Since the 1900s, researchers have methodically examined the geometry and mathematics that underlie origami folding. Origami notation and "wet folding" methods were invented by pioneers like Akira Yoshizawa, allowing for more organic shape manipulations. More recently, computational tools developed by physicist Dr. Robert Lang have allowed designing highly complex origami patterns unachievable manually. These advances have enabled treating origami as an engineering discipline rather than just an art form.
Benefits of Origami-Based Deployable Structures
Origami folding techniques are very helpful in the development of deployable structures in aeronautical engineering because they can collapse enormous 2D or 3D structures into significantly smaller sizes.These deployable structures made of origami have several advantages that make them ideal for use in aerospace applications.
Stowability: The compact folded state allows for efficient storage and transportation of large structures.
Portability: The reduced size and weight enables easy deployment and handling of structures in space or other remote environments.
Deployability: Origami designs can reliably unfurl the structure on-demand from its folded state.
Manufacturability: Origami principles enable building complex structures from a single piece without additional assembly steps.
Lower Volume: The significantly reduced volume of the folded structure allows it to fit within tight launch vehicle payload constraints.
Lower Mass: Origami designs minimize the amount of material required, resulting in lighter weight structures that are critical for space missions.
These advantages make origami-based deployable structures an enabling technology for a wide range of aerospace applications, from space telescopes and solar arrays to robotic exploration platforms.
Origami's Impact on Aerospace Innovations
Origami principles have already revolutionized several key aerospace technologies. One prime example is solar sails, which use the radiation pressure from the sun's light to propel spacecraft. For solar sails to be effective, they require an extremely large, thin, and highly reflective surface area. This is where the Miura-ori origami folding pattern has proven transformative.
Solar sail structures may be folded and stored compactly for launch using the Miura-ori fold, and once in space, they can be dependably expanded to their maximum size. Solar sails may optimize their surface area for maximum propulsion while yet fitting within the strict volume constraints of a rocket payload thanks to this origami-inspired folding technology. An important step toward the real-world application of origami concepts to space technology was taken in 1995 when the Miura-ori pattern was used for the first time for the deployment of solar sails.
Beyond solar sails, origami has also revolutionized the design of space-based telescopes and solar arrays. The James Webb Space Telescope, for instance, leverages origami folding to pack its massive 6.5-meter primary mirror into a compact launch configuration. Similarly, origami-inspired accordion-style solar arrays can retract tightly for launch then expand reliably in orbit to generate considerably more power than traditional rigid panel designs.
The versatility of origami has led to its adoption across diverse aerospace domains, from foldable rover chassis and robotic manipulators for planetary exploration to compact, deployable habitats and radiation shielding for future extraterrestrial settlements. This ancient art form has truly transformed the realm of aerospace engineering, unlocking innovative solutions unachievable through conventional design approaches.
Origami's Applications in Space-Based Solar Technology Another influential origami technique in aerospace engineering is the "Flasher" pattern.
The Flasher is a rotationally symmetric folding scheme that allows a large, circular 2D area to collapse into an extremely compact 3D structure. This capability has made the Flasher pattern particularly valuable for the design of deployable solar panels used on spacecraft. The Flasher fold enables solar panels to be stowed in a small volume during launch, then reliably unfurled to their full expansive size once in orbit. This significantly simplifies the processes of storing, transporting, and deploying the solar arrays, which are critical for power generation on space missions. Origami techniques like the Flasher pattern have also found application in NASA's development of "starshade" technology. The starshade is a large, flower-shaped spacecraft designed to fly alongside a space telescope and precisely block the light from distant stars. This allows the telescope to capture images of exoplanets orbiting those stars, which would otherwise be obscured by the star's brilliance. To fit within a rocket's payload volume, the starshade must be folded using origami principles, then reliably deploy to its full 34-meter diameter once in space. The intricate origami patterns enabling the starshade's compact stowage and precise unfolding are crucial for the success of this innovative exoplanet imaging system. The versatility of origami has allowed it to revolutionize a diverse range of aerospace applications, from solar power generation to advanced telescope instrumentation, highlighting the immense potential of this ancient art form in the realm of modern space technology.
With more time and research, origami could help further excel the field of aerospace engineering beyond its current limits, and even make the main processes of moving structures into space much easier. Even anyone could just grab a piece of square paper and make the next significant folding technique. Even the greatest engineers started off small!
References:
Lucero, J. C. (2024, June 29). Origami in aerospace engineering: Ancient art meets modern technologies. One Fold at a Time. https://onefoldatatime.com/origami-in-aerospace-engineering
Origami engineering: The art of folding in space travel and Robotics. Lead Innovation - Bringing visions to life. (n.d.-b). https://www.lead-innovation.com/en/insights/english-blog/origami-engineering-on-the-advance
García, F. G. (2021a, May 24). Aerospace origami. AERTEC. https://aertecsolutions.com/en/2021/05/24/aerospace-origami/
Matthew, & MatthewHello. (n.d.). Matthew. The Aero Blog. https://theaeroblog.com/folding-the-future-how-origami-shapes-aerospace-engineering-and-spacecraft-design/
Byucmr, & Instructables. (2023, October 3). Origami Flasher. Instructables. https://www.instructables.com/Origami-Flasher-1/
NASA. (2022, March 17). Student project: Space origami: Make your own starshade. NASA. https://www.jpl.nasa.gov/edu/learn/project/space-origami-make-your-own-starshade/
Yue1, S. (2023, March 1). IOPscience. Journal of Physics: Conference Series. https://iopscience.iop.org/article/10.1088/1742-6596/2459/1/012137/meta