Lifeboat Foundation

Engineers know that tiny, super-fast objects can cause damage to spacecraft, but it’s been difficult to understand exactly how the damage happens because the moment of impact is incredibly brief. A new study from MIT seeks to reveal the processes at work that produce microscopic craters and holes in materials. The hope is that by understanding how the impacts work, we might be able to more durable materials.

Accidental space impacts aren’t the only place these mechanisms come into play. There are also industrial applications on Earth like applying coatings, strengthening metallic surfaces, and cutting materials. A better understanding of micro-impacts could also make these processes more efficient. Observing such impacts was not easy, though.

For the experiments, the MIT team used tin particles about 10 micrometers in diameter accelerated to 1 kilometer per second. They used a laser system to launch the projectile that instantly evaporates a surface material and ejects the particles, ensuring consistent timing. That’s important because the high-speed camera pointed at the test surface (also tin) needed specific lighting conditions. At the appointed time, a second laser illuminated the particle allowing the camera to follow the impact at up to 100 million frames per second.

Continue reading “MIT Studies Micro-Impacts at 100 Million Frames Per Second” »

Animatronics engineer Matt Denton has worked on some pretty mindblowing projects. He’s built special effects robots for “Star Wars,” “Harry Potter,” and “Jurassic World.”

But his latest project may just be his most ambitious yet. Denton has created a huge, six-legged driveable robot that has been compared to a spider. And it’s won him a Guinness World Record.

Continue reading “The man who built ‘Star Wars’ droid BB-8 has created a giant rideable robot spider — here it is in action” »

How much photons are there in the universe?

NASA has selected the first batch of U.S. companies to join the agency on its journey to its next destination, the moon, which NASA wants to explore in order to prepare to go on to Mars.

During a public event held today (Nov. 29), the agency unveiled nine new partners that will be designing and building lunar landers aimed at facilitating scientific exploration of the moon. In addition to the specific companies chosen, NASA Administrator Jim Bridenstine also announced that the program running those contracts — the Commercial Lunar Payload Services program — is now part of the science section of NASA’s bureaucracy, not the human exploration section.

The general idea is that these companies will be able to compete for contracts to deliver NASA science experiments to the surface of the moon by flying lunar landers on rocket launches purchased from other commercial space companies. Those individual contracts would substitute for NASA needing to build those capacities itself. [Building Apollo: Photos from Moonshot History].

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DARPA says its new drone technology can collaborate and adapt with minimal human commands, even when its communications are challenged.

50 years of discovery — and he’s not done yet.

An accidental discovery is giving new hope for coral reefs.

BBC Earth

WASHINGTON — The Defense Advanced Research Projects Agency has awarded satellite operator Telesat a contract to study the use of commercial buses in the agency’s experimental low-Earth-orbit constellation program known as Blackjack.

Telesat of Ottawa, Canada, is the third company to receive a study contract for Blackjack, a DARPA demonstration mission that envisions deploying 20 satellites — each carrying one or more payloads. DARPA’s goal is to find lower cost alternatives to traditional military satellites. DARPA aims to pay no more than $6 million per satellite, including launch. European satellite manufacturer Airbus Defence and Space and small satellite manufacturer Blue Canyon Technologies of Boulder, Colorado, received similar contracts over the past four weeks.

Telesat’s contract, which the company announced Nov. 27, is a 12-month study to assess the utility of Telesat buses as the company refines its plans for a constellation of roughly 300 small, broadband satellites. Telesat has yet to select a manufacturer for its satellites. Two contenders, Airbus Defence and Space and a team formed by Thales Alenia Space and Maxar Technologies, are competing to build an unspecified number of satellites. Michael Schwartz, Telesat’s senior vice president of corporate and business development said the company still plans to down select a manufacturer in the spring.

Continue reading “Telesat wins study contract for DARPA’s experimental constellation” »