NASA Decelerators Slow Payloads Traveling at Supersonic Speed

What will it take to land heavier spacecraft on Mars? How will engineers slow large payloads traveling at supersonic speeds in a thin Martian atmosphere? The Low Density Supersonic Decelerator (LDSD) mission will seek to answer these questions.

Posted in: Motion Control, Motors & Drives, Power Transmission, Test & Measurement, Aerospace, Machinery & Automation, News


Mobile Robots Help Technicians Manufacture Airplanes

A new mobile assistant is being developed to support technicians in the airplane manufacturing industry when applying sealant, measuring, and testing — without putting them at risk. In the EU project known as VALERI (Validation of Advanced, Collaborative Robotics for Industrial Applications), a European consortium is engineering a mobile robot that operates autonomously and moves independently through a production hall, side-by-side with the engineers and technicians. It is not intended to replace the technician, but instead relieve them of stressful and monotonous duties and take over inspection duties.

Posted in: Manufacturing & Prototyping, Industrial Controls & Automation, Sensors, Test & Measurement, Aerospace, Aviation, Machinery & Automation, Robotics, News


New Strain Gauge Enables 'Soft Machines'

Purdue University researchers have developed a technique to embed a liquid-alloy pattern inside a rubber-like polymer to form a network of sensors. The approach may be used to produce "soft machines" made of elastic materials and liquid metals.Such an elastic technology could be used to create robots with sensory skin, as well as develop stretchable garments that interact with computers."What's exciting about the soft strain gauge is that it can detect very high strains and can deform with almost any material," said Rebecca Kramer, an assistant professor of mechanical engineering at Purdue University. "The skin around your joints undergoes about 50 percent strain when you bend a limb, so if you wanted to have sensory skin and wearable technology that tracks your movement you need to employ soft, stretchable materials that won't restrict your natural range of motion."SourceAlso: Learn about Thermal Properties of Microstrain Gauges.

Posted in: Materials, Metals, Plastics, Motion Control, Sensors, Machinery & Automation, Robotics, News


Lubricant Selection: What Every Design Engineer Needs to Know

Simply stated, lubrication refers to the age-old science of friction reduction. People have been using lubricants for thousands of years, experimenting with waxes and oils from vegetables, fish, and animals to move heavy materials with equipment designed to gain mechanical advantage. In more recent years, the discovery of petroleum oil in the 1800s ushered in a new era of lubrication developments as people learned how to refine this oil and use it for a variety of purposes. Machinery could now be developed to operate faster and under heavier loads by using lubricants to create a barrier that eliminates friction and metalon- metal contact.

Posted in: Materials, Mechanical Components, Machinery & Automation, White Papers


New Algorithms Enable Self-Assembling, Printable Robots

In two new papers, MIT researchers demonstrate the promise of printable robotic components that, when heated, automatically fold into prescribed three-dimensional configurations.One paper describes a system that takes a digital specification of a 3-D shape — such as a computer-aided design, or CAD, file — and generates the 2-D patterns that would enable a piece of plastic to reproduce it through self-folding.The other paper explains how to build electrical components from self-folding laser-cut materials. The researchers present designs for resistors, inductors, and capacitors, as well as sensors and actuators — the electromechanical “muscles” that enable robots’ movements.“We have this big dream of the hardware compiler, where you can specify, ‘I want a robot that will play with my cat,’ or ‘I want a robot that will clean the floor,’ and from this high-level specification, you actually generate a working device,” said Daniela Rus, the Andrew and Erna Viterbi Professor of Electrical Engineering and Computer Science at MIT.SourceAlso: Learn about Self-Assembling, Flexible, Pre-Ceramic Composite Preforms.

Posted in: Electronics & Computers, Electronic Components, Manufacturing & Prototyping, Rapid Prototyping & Tooling, Motion Control, Motors & Drives, Power Transmission, Sensors, Software, Computer-Aided Design (CAD), Mathematical/Scientific Software, Machinery & Automation, Robotics, News


Robotic Modules Transform into Configurable Furniture

EPFL scientists from the Biorobotics Laboratory (BIOROB) have developed small robotic modules that can change their shape to create reconfigurable furniture. Like Lego bricks, Roombots pieces can be stacked upon each other to create various structures. Each 22 cm-long piece, which looks like two large dice joined together, has a wireless connection. Inside are a battery and three motors that allow the module to pivot with three degrees of freedom. The modules have retractable "claws" that they use to attach to other pieces and form larger structures. With a series of rotations and connections, the modules can change shape and become any of a variety of objects and pieces of furniture. In order to metamorphose and to attach to passive elements, the Roombots need to anchor themselves to something, so the researchers developed a special surface with holes adapted to the Roombots' mechanical claws. Fixed to the walls, floor, and already existing pieces of furniture, these surfaces act as interfaces between the modules and their environment. The little robots can then climb the walls of a room, or attach themselves to "passive" elements on the furniture to form mobile tables or lamps that follow users around the room. "It could be very useful for disabled individuals to be able to ask objects to come closer to them, or to move out of the way," says Auke Ijspeert, head of the BIOROB.SourceAlso: Learn about a Kinetic Calibration Process for Flight Robotic Arms.

Posted in: Machinery & Automation, Robotics, News


3D-Printing Aerial Robot Mimics Tiny Bird

Scientists from Imperial College London have developed a 3D-printing Micro Aerial Vehicle (MAV) that mimics the way that swiftlets build their nests.The MAV is a quad-copter, with four blades that enable it to fly and hover. The vehicle, made from off-the-shelf components, carries in its underbelly two chemicals that create polyurethane foam when mixed, and a printing module to deliver the foam. The foam can then be used to build simple structures or repair components.The texture of the polymer exuded from the 3D printer can also be used to create ’grippers,‘ which stick onto and transport objects to different locations. The MAV could therefore pick up and remove bombs, or dispose of hazardous materials without exposing humans to danger. The next step for the team is to enable the vehicle to fly autonomously in any environment. The scientists plan to incorporate high-speed cameras and sensors on board the MAV, which will act like a satellite navigation system for tracking and controlling of the flight trajectory.SourceAlso: Learn more about NASA's Robonaut 2.

Posted in: Imaging, Manufacturing & Prototyping, Rapid Prototyping & Tooling, Materials, Plastics, Sensors, Aerospace, Aviation, Machinery & Automation, Robotics, Defense, News