A German company has developed a commuter vehicle that combines pedal power with electric power to reach speeds up to 120 mph. The Twike 5 is a small, enclosed vehicle whose driver- and passenger-powered pedals don't connect to wheels but rather to a generator that helps recharge the batteries.
Resonators are designed to dissipate high-frequency sounds generated by vehicle exhaust pipes, but they take up a lot of room on a car's underside where there's little to spare. Faurecia engineer Hartmut Strob addressed that problem with a 2-millimeter-long array of 1,200 microperforations wide enough to dissipate the energy in an acoustic wave but too small to vent damaging gases.
Addressing climate change can't be done without nuclear, and Sweden is a perfect model of a decarbonized energy grid, Joshua Goldstein and Staffan Qvist assert. "The reason we're focused on nuclear power in particular is that it scales up much faster than anything else," Goldstein says.
ASME has joined with GrabCAD and Siemens to sponsor this year’s ASME Student Challenge, “Designing Drones for Social Impact.” Participants in this online competition will be asked to create a 3D printable drone attachment to assist with transporting critical supplies such as food, medication, blood packs, seeds and fertilizer to rural areas. The top three winners will receive a share of $1,000 in prize money as well as a one-year complimentary ASME student membership. The winners of the competition, which ends July 18, will be announced Aug. 8 at the ASME Engineering Festival™ (E-Fest) in Lima, Peru.
Inspired by the structure of semiconductors, researchers at the University of Washington Institute for Stem Cell and Regenerative Medicine used photolithography to generate an arterial circuit matrix that works with existing heart muscle tissue and one day could help repair damage from heart attacks. The breakthrough method overcomes the problem of creating blood vessels robust enough to sustain heart function.
NASA scientists believe they are reproducing exoplanet atmospheres by studying the way starlight passes through them and comparing the results with those in our solar system. The researchers have found that many atmospheres are opaque due to the formation of aerosols under extreme heat, making our clear and life-giving atmosphere something of an anomaly.
With an estimated 775 million smart vehicles expected to be operational by 2023, cybersecurity is vital to protecting against rogue vehicles on the road or cyberattacks that disable a fleet of trucks, preventing deliveries, says Monique Lance, managing director of Israeli automotive cybersecurity firm Vargas. Preparedness also is important, she says, adding, "It would help if you had response measures in place and work around with multiple security layers."
Having reinforced Ukraine's army, the US is now lending assistance to the nation's navy as Russia attempts to block its ports and undermine its pro-Western government.
The US plans to step up its commitment to the South China Sea with the deployment of two littoral combat ships to Singapore this year. Adm. Philip Davidson, commander of US Indo-Pacific Command, noted that the greater part of US forces in the region remains there, and "you're not going to see those reduced by any sense of the word."
The US is proceeding with plans to pull out of the Intermediate-Range Nuclear Forces Treaty and will begin initial production of parts for ground-launched cruise missile systems. Early efforts will focus on developmental testing.
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