Boom Supersonic reveals XB-1 plane built to break the sound barrier

Aviation startup Boom Supersonic has unveiled a fully assembled version of its demonstrator aircraft, taking an important step forward in its efforts to build the world’s fastest airliner. The company’s XB-1 is a sleek, one-third-scale prototype of its… Continue reading Boom Supersonic reveals XB-1 plane built to break the sound barrier

Boom Supersonic teams with Rolls-Royce on world’s fastest civil aircraft

While work continues on its XB-1 prototype supersonic plane ahead of a planned unveiling later in the year, aviation startup Boom Supersonic is pressing ahead with the development of its flagship model, the Overture. These efforts have today received a… Continue reading Boom Supersonic teams with Rolls-Royce on world’s fastest civil aircraft

Lowering the Boom on Yagi Element Isolation

Antenna design can be confusing, to say the least. There’s so much black magic that goes into antennas that newbies often look at designs and are left wondering exactly how the thing could ever work. Slight changes in length or the angle between two elements result in a vastly different …read more

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Hiking Pole Turned Lightweight Yagi Antenna

Among amateur radio enthusiasts, there’s a subset of users who climb mountainous areas to use their gear from elevated positions. Anyone looking to take part in what’s known as Summits on the Air (SOTA) will obviously want to keep their equipment as light and small as possible. For [Stuart Thomas], …read more

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High-End Headphones Get Flexible Boom Upgrade

It seems a reasonable assumption that anyone who’d be willing to spend a few hundred dollars on a pair of headphones is probably the type of person who has a passion for high quality audio. That, or they work for the government. We’re fairly sure [Daniel Harari] falls into that former category though, given how much thought he gave to adding a decent microphone to his Sennheiser HD650 headphones.

Not happy with the results he got from microphones clipped to his shirt or mounted on a stand, [Daniel] realized what he really wanted was a sensitive boom microphone. This would …read more

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A DIY Balcony Crane Lifts Groceries For The Lazy But Patient

If necessity is the mother of invention, then laziness is probably its father. Or at least a close uncle. Who hasn’t thought, “There has to be a better way to do this, one that doesn’t involve me burning precious calories”?

Motivational laziness seems to increase with potential energy, as anyone who needs to haul groceries up four flights of stairs will tell you. This appears to be where this balcony-mounted drill-powered crane came from. Starting with a surplus right-angle gearbox and drum, [geniusz K] fabricated the rest of the crane from steel plate and tubing. We like the quality of …read more

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The top 8 startups from Y Combinator Winter ’16 Demo Day 2

ycombinator-bestof2 Supersonic planes, food harvesting robots and instant HIV diagnosis were some of the ideas that wowed us on Demo Day 2 for Y Combinator’s Winter 2016 batch. We queried investors and TechCrunch’s writers to come up with our top 8 picks from all 59 startups that presented. Check out our coverage of the 60 YC startups from Tuesday, plus our 7 favorites. Additional reporting by Megan… Read More Continue reading The top 8 startups from Y Combinator Winter ’16 Demo Day 2