The Sikorsky prize for human-powered helicopters has been claimed by a Kickstarter-funded startup called Aerovelo. Aerovelo's founders, Canadians Todd Reichert and Cameron Robertson, won the $250,000 purse for the 30-second flight of Atlas, a huge quadrotor with a bike in the middle whose flight is an absolute marvel to behold.
At that point, Reichert knew that the challenge was to keep supplying enough power through his legs to keep the craft from descending too quickly. On two previous flights in which he'd flirted with the three-meter mark, Reichert had descended too abruptly and fallen afoul of a phenomenon called vortex ring state, in which a helicopter essentially gets sucked down by its own downwash. Both times Atlas had been wrecked. This time, Reichert spent the balance of the flight easing the craft down gently to the ground. "You're so focused on having the body do a very precise thing," he told Pop Mech. "If you lay off the power even a little bit, or make any sharp control movement, you can crash."
This smallish portable USB charger from Kmashi is rated at 5000mAh and is on sale now for $8.38 when you use promo code: PIRVWBWG on Amazon. I have a few different Kmashi chargers, and have used them for over a year with good results.
The flashlights in our household have a tendency to wander off. Where do they go? I gave my last remaining one to my daughter for a camping trip, so I just reordered an 8-pack of metal LED flashlights for $14. Each flashlight has 9 LEDs and uses 3 AAA cells (included, though some reviewers on […]
Unlike a multimeter, this battery tester isn’t battery powered. Instead, it measures the voltage across the terminals of 9V, AA, AAA, C, D and 1.5V button type batteries. It’s also easier to use than multimeter probes. It’s only $6.61 on Amazon and has a 4.5 star rating with over 1500 reviews.
You won’t need to think twice about going hands-free on the road with Exomount’s easy-to-use car mount. It mounts your smartphone so easily, you literally only need one hand to quickly secure your phone in the perfect position and get driving. Don’t risk a ticket, use the world’s best suction technology to effortlessly mount and […]
It’s time for a power upgrade — throw out that tired-out power strip and swap in this family-size USB charger, packed with 6 high-speed ports. With a built-in control chip, Kinkoo optimizes each port to ensure the fastest charging possible for all your devices. The Kinkoo is made from high-grade and durable materials so you […]
Watching Netflix, Hulu or other streaming services can unfortunately be difficult while traveling outside the US. Rather than bypass these restrictions with the help of a complex and slow VPN, choose a faster and simpler solution with Getflix. Instead of rerouting all your Internet traffic through a different server, this handy service only routes the […]