Propulsion

A New Way to Build Soft Robots That Can Walk on Water

Imagine a tiny robot, no bigger than a leaf, gliding across a pond’s surface like a water strider. One day, devices like this could track pollutants, collect water samples or scout...

Simulated Humanoid Robots Learn to Hike Rugged Terrain Autonomously

Training humanoid robots to hike could accelerate development of embodied AI for tasks like autonomous search and rescue, ecological monitoring in unexplored places and...

A New Window into Earth’s Upper Atmosphere

Between 50 and 100 kilometers (30-60 miles) above Earth’s surface lies a largely unstudied stretch of the atmosphere, called the mesosphere. It’s too high for airplanes and weather balloons,...

Tiny Fans on the Feet of Water Bugs Could Lead to Energy Efficient Mini Robots

A new study explains how tiny water bugs use fan-like propellers to zip across streams at speeds up to 120 body lengths per second. The researchers then created...

A One-Piece Liquid Rocket Thrust Chamber Assembly

NASA researchers are eliminating complex joints by manufacturing a 1-piece TCA utilizing 3D printing and large-scale additive manufacturing technologies to directly deposit the nozzle onto the combustion chamber. And, by replacing a traditional solid metal jacket with a composite overwrap for support, the overall weight is reduced by over 40 percent. Read on to learn more.

Light-Propelled Flying Structures Aim to Study Earth’s Upper Atmosphere

A new study introduces a novel way to reach a largely unstudied stretch of the atmosphere, between 30-60 miles above Earth’s surface, the mesosphere. Researchers have introduced a new way to explore it: lightweight flying structures that can float using nothing but sunlight.

AI Shapes Autonomous Underwater “Gliders”

Marine scientists have long marveled at how animals like fish and seals swim so efficiently despite having different shapes. Their bodies are optimized for efficient, hydrodynamic aquatic...

A ‘Real-Time Programmable Robotic Sheet’ Can Grasp and Walk on Its Own

Folding structures are widely used in robot design as an intuitive and efficient shape-morphing mechanism, with applications explored in space and aerospace robots,...

Making Hydrogen Power a Practical Proposition

Occupying a unique space as both an energy vector and a fuel, hydrogen has gained interest for propulsion and power generation applications over the past several years. Hydrogen has been investigated thoroughly throughout the previous decades, but with advances in hydrogen generation and infrastructure, and the increasing need to low-carbon propulsion solutions across all sectors, hydrogen propulsion may be poised for significant market penetration. Read on to learn more.

Autonomous Structures Can Be Programmed to Jump Days in Advance

Researchers have created dynamic structures that leap into the air on a predetermined schedule without intervention from computers or external stimuli. Precisely when these...

Why Going Back to the Moon Powers Humanity Forward

Exploration of the Moon and Mars is not only a scientific pursuit; it is also a driver of technological advancement and global cooperation. Deep space missions compel us to address fundamental questions — about life beyond Earth, resilience in extreme environments and the origins of our solar system. Read on to learn more.

NASA Marks Artemis Progress with Gateway Lunar Space Station

The Gateway lunar space station is a multi-purpose platform that offers capabilities for long-term exploration in deep space in support of NASA’s Artemis campaign and Moon to Mars objectives. Gateway will feature docking ports for a variety of visiting spacecraft, as well as space for crew to live, work, and prepare for lunar surface missions. Read on to learn more.

Mid-Air Transformation Helps Flying, Rolling Robot to Transition Smoothly

Specialized robots that can both fly and drive typically touch down on land before attempting to transform and drive away. But when the landing terrain is rough,...

Nimble Dimples: Agile Underwater Vehicles Inspired by Golf Balls

A spherical prototype that can change its surface from smooth to dimpled, cuts through drag and generates lift. Underwater or aerial vehicles with dimples like golf balls...

A Lightweight Floating Robot Replicates Nature

Researchers have developed a compact and versatile robot that can maneuver through tight spaces and transport payloads much heavier than itself. Smaller than a credit card and weighing 6 grams, the nimble swimming robot is ideal for environments with limited space like rice fields, or for performing inspections in waterborne machines. Read on to learn more.

Soft Robot Can Carry Cargo Up and Down Steep Aerial Wires

Researchers have created a light-powered soft robot that can carry loads through the air along established tracks, similar to cable cars or aerial trams. The soft robot operates...

Eldercare Robot Helps People Sit and Stand, and Catches Them If They Fall

The United States population is older than it has ever been. Today, the country’s median age is 38.9, which is nearly a decade older than it was in 1980. And the...

Remotely Moving Objects Underwater Using Sound

Sound can do more than just provide a nice beat. Sound waves have been used for everything from mapping the seafloor to breaking apart kidney stones. Thanks to a unique material structure,...

How Amprius Is Advancing Energy Density for Electric Aircraft Batteries

Dr. Ionel Stefan, CTO, Amprius, is the guest on this episode of the Aerospace & Defense Technology podcast.

Cislunar Space Exploration: Next Frontier for Propulsion Advancements

The race is on for leadership in cislunar space, considered a gateway to the future of space exploration. Yet operating in this domain introduces unique challenges for propulsion systems. Read on to learn more about the progress being made on the matter.

Engineering the EL9: Electra's Ultra Short Hybrid-Electric Aircraft

Marc Allen, CEO of Electra, is the guest on this episode of the Aerospace & Defense Technology podcast.

Engineering a Robot That Can Jump 10 Feet High — Without Legs

Inspired by the movements of a tiny parasitic worm, Georgia Tech engineers have created a 5-inch soft robot that can jump as high as a basketball hoop. Their device, a silicone...

RoboBee Comes in for a Landing

The Harvard RoboBee has long shown it can fly, dive, and hover like a real insect. But what good is the miracle of flight without a safe way to land? A storied engineering achievement by the Harvard...

MIT Engineers Develop a Fully 3D-Printed Electrospray Engine

An electrospray engine applies an electric field to a conductive liquid, generating a high-speed jet of tiny droplets that can propel a spacecraft. These miniature engines are...

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.