Propulsion

A Springtail-Like Jumping Robot

Springtails, small bugs often found crawling through leaf litter and garden soil, are expert jumpers. Inspired by these hopping hexapods, roboticists in the Harvard John A. Paulson School of Engineering and...

Morphing Robot Turns Challenging Terrain to Its Advantage

From mountain goats that run up near-vertical rock faces to armadillos that roll into a protective ball, animals have evolved to adapt effortlessly to changes in their environment....

New Microactuator Driving System Could Give Microdrones a Jump-Start

An innovative circuit design could enable miniature devices, such as microdrones and other microrobotics, to be powered for longer periods of time while staying...

Insect Cyborgs: Toward Precision Movement

In a recent study published in the journal eLife, an international research group has studied the relationship between electrical stimulation in stick insects’ leg muscles and the resultant torque (the twisting force that makes the leg move). Read on to learn what they found.

Can DNA-Nanoparticle Motors Get Up To Speed With Motor Proteins?

DNA-nanoparticle motors are exactly as they sound — tiny artificial motors that use the structures of DNA and RNA to propel motion by enzymatic RNA degradation. Essentially,...

Smallest Walking Robot Makes Microscale Measurements

Cornell researchers in physics and engineering have created the smallest walking robot yet. Its mission: to be tiny enough to interact with waves of visible light and still move...

How Jet Engine Flow Can Be Controlled Optically

University of Virginia researchers showed for the first time that airflow in supersonic combusting jet engines can be controlled by an optical sensor. The finding could lead to more efficient stabilization of hypersonic jet aircraft. Read on to learn more.

Helping Robots Make Good Decisions in Real Time

In 2018, Google DeepMind's AlphaZero program taught itself the games of chess, shogi, and go, using machine learning and a special algorithm to determine the best moves to win a game within a...

Magnetically Controlled Kirigami Surfaces Move Objects: No Grasping Needed

A novel device couples magnetic fields and kirigami design principles to remotely control the movement of a flexible dimpled surface, allowing it to manipulate...

Bird-Inspired Drone Can Jump for Take-Off

EPFL researchers have built a drone that can walk, hop, and jump into flight with the aid of birdlike legs, greatly expanding the range of potential environments accessible to unmanned aerial...

Safe, Inexpensive Method to Propel Small Satellites

A novel micropropulsion system was developed for nanosatellite applications using a liquid-fed pulsed-plasma thruster. It uses a liquid propellant for a Lorentz-force pulsed-plasma accelerator and an extended lifetime ignition system driven by nanosecond-long pulses. Read on to learn more.

How Pratt & Whitney Uses a Robot to Help Build Jet Engines

Kevin Kirkpatrick, Vice President of Aftermarket Global Operations, Pratt & Whitney, is the guest on this episode of the Aerospace & Defense Technology podcast.

Test Your Knowledge About Hydrogen-Powered Aircraft

How much do you know about how hydrogen-powered aircraft work and the companies that are researching and developing hydrogen-powered aircraft programs? Find out with this quiz.

First Toroidal Micro-Robot to Swim Autonomously in Viscous Liquids

A peek through an optical microscope reveals a hidden universe teeming with life. Nature has devised ingenious methods for micro-organisms to navigate their viscous...

How Much Do You Know About Power Transformers?

Electrical devices designed to transfer electrical power from one circuit to another without altering the frequency, power transformers function on the principle of electromagnetic induction. How much do you know about power transformers? Find out with this quiz.

Self-Propelled Nanorobots

The “nanoswimmers” could be used to remediate contaminated soil, improve water filtration, or even deliver drugs to targeted areas of the body.

Synthetic Mini Motor with Enormous Power

Researchers have developed an artificial motor at the supramolecular level that can develop impressive power. The wind-up motor is a tiny ribbon made of special molecules. When energy is applied, the...

Artificial Muscles Propel a Robotic Leg to Walk and Jump

Inventors and researchers have been developing robots for almost 70 years. To date, all the machines they have built have had one thing in common: they are powered by motors. Even...

Engineering a New Approach to Satellite Constellation Design

Propulsion systems that were once crafted in very limited quantities now need to be manufactured by the thousands. This scale-up necessitates a new design and development approach that blends modern manufacturing principles with legacy systems. Read on to learn more about it.

Highway Segment Charges Electric Vehicles

Purdue University engineers and the Indiana Department of Transportation (INDOT) are working to make it possible for electric vehicles ranging from tractor-trailers to passenger cars to wirelessly...

Why the Hybrid Approach Extends the Range of Electric Aircraft

Jean-Christophe Lambert, Ascendance Co-founder and CEO, joins the Aerospace & Defense Technology podcast to explain why the hybrid approach is essential to near-term development of electric aircraft.

Jet-Propelled Sea Creatures Could Improve Ocean Robotics

Scientists at the University of Oregon have discovered that colonies of gelatinous sea animals swim through the ocean in giant corkscrew shapes using coordinated jet propulsion, an...

Flexible “Skeletons” for Soft, Muscle-Powered Robots

Our muscles are nature’s perfect actuators — devices that turn energy into motion. For their size, muscle fibers are more powerful and precise than most synthetic actuators. They...

Treating Liver Cancer with Microrobots Piloted by a Magnetic Field

The idea of injecting microscopic robots into the bloodstream to heal the human body is not new. It’s also not science fiction.

Dragonfly Wings Used to Study Motion

Scientists from Hiroshima University undertook a study of dragonfly wings in order to better understand the relationship between a corrugated wing structure and vortex motions. They discovered that...