Technologies
Blade Runner: 18-Rotor «Volocopter» Moving from Concept to Prototype
It may look "nutty" and like a "blender," but the designers say the craft could challenge helicopters
Inventor and physicist Thomas Senkel created an Internet sensation with the October 2011 video of his maiden—and only—test flight of a spidery proof-of-concept 16-rotor helicopter dubbed Multicopter 1. Now the maker of the experimental personal aviation craft, the European start-up e-volo, is back with a revised «volocopter» design that adds two more rotors, a serial hybrid drive and long-term plans for going to 100 percent battery power.
The new design calls for 1.8-meter, 0.5-kilogram carbon-fiber blades, each paired with a motor. They are arrayed around a hub in two concentric circles over a boxy one- or two-person cockpit.
After awarding the volocopter concept a Lindbergh Prize for Innovation in April, Yolanka Wulff, executive director of The Charles A. and Anne Morrow Lindbergh Foundation, admitted the idea of the multi-blade chopper at first seems «nutty.» Looking beyond the novel appearance, however, she says, e-volo’s concept excels in safety, energy efficiency and simplicity, which were the bases of the prize.
All three attributes arrive thanks largely to evolo’s removal of classic helicopter elements. First, the energy-robbing high-mass main rotor, transmission, tail boom and tail rotor are gone. The enormous blades over a normal chopper’s cabin create lift, but their mass creates a high degree of stress and wear on the craft. And the small tail rotor, perched vertically out on a boom behind the cabin, keeps the helicopter’s body from spinning in the opposite direction as the main blades, but it also eats up about 30 percent of a helicopter’s power.
The volocopter’s multiple rotor blades individually would not create the torque that a single large rotor produces, and they offer redundancy for safety. Hypothetically, the volocopter could fly with a few as 12 functioning rotors, as long as those rotors were not all clustered together on one side, says Senkel, the aircraft’s co-inventor and e-volo’s lead construction engineer.
Without the iconic two-prop configuration, the craft would be lighter, making it more fuel efficient and reducing the physical complexity of delivering power to the top and rear blades from a single engine. Nor would the volocopter need an energy-hungry transmission. In fact, «there will be no mechanical connection between the gas engine and the blades,» Senkel says. That means fewer points of energy loss and more redundancy for safety.
E-volo’s design eliminates the dependence on a single source of power to the blades. As a serial-hybrid vehicle, the volocopter would have a gas-fueled engine, in this case an engine capable of generating 50- to 75 kilowatts, typical of ultralight aircraft. Rather than mechanically drive the rotors, the engine would generate power for electric motors as well as charge onboard lithium batteries. Should it fail, the batteries are expected to provide enough backup power so the craft could make a controlled landing.
Whereas helicopters navigate by changing the pitch of the main and tail rotor blades, the volocopter’s maneuverability will depend on changing the speed of individual rotors. Although more complex, it is more precise in principle to control a craft using three to six redundant microcontrollers (in case one or more fails) interpreting instructions from a pilot using a game console–like joystick—instead of rudder pedals, a control stick and a throttle.
Wulff’s first impression about the volocopter’s design is not uncommon. E-volo’s computer-animated promotional videos of a gleaming white, carbon-fiber and fiberglass craft beneath a thatch of blades recall the many-winged would-be flying machines of the late 19th century. This point is not lost on Senkel.
«I understand these skeptical opinions,» he says. «The design concept looks like a blender. But we really are making a safe flying machine.»
That would be progress in itself. Multicopter 1 looked like something from an especially iffy episode of MacGyver, complete with landing gear that involved a silver yoga ball. Senkel rode seated amid all those rotors powered only by lithium batteries. Multicopter 1 generated an average of 20 kilowatts for hovering and was aloft for just a few minutes.
There’s a reason why the experimental craft flew briefly and only once.Senkel describes that first craft as «glued and screwed together.» Seated on the same platform as the spinning blades, he says, «I was aware of the fact that I will be dead, maybe. Besides, we showed that the concept works. What do we win if we fly it twice?» he asks rhetorically.
Other than putting the pilot safely below the blades, the revised volocopter design would operate largely the same as the initial prototype. The design calls for three to six redundant accelerometers and gyroscopes to measure the volocopter’s position and orientation, creating a feedback loop that gives the craft stability and makes it easier to fly, Senkel says.
The volocopter’s revised prototype under construction could debut as soon as next spring. The first production models, available in perhaps three years, are expected to fly for at least an hour at speeds exceeding 100 kilometers per hour and a minimum altitude of about 2,000 meters, still far shy of standard helicopter’s normal operating altitude of about 3,000 meters. «This could change our lives, but I don’t expect anything like that for 10 years,» Senkel adds.
Given that most of the technology needed to build the volocopter is already available, «this idea is fairly easy to realize,» says Carl Kühn, managing director of e-volo partner Smoto GmbH, a company that integrates electric drive systems and related components.
Like Senkel, Kühn has modest short-term expectations despite his repeated emphasis on the standard nature of the technology involved. «I guess that e-volo will have [a prototype] aircraft in three years that can do the job—that it will lift one or two persons from one point to another,» he says.
The biggest immediate limitations appear to be regulatory. For instance, European aviation regulators consider any electrical system greater than 60 volts to be high voltage and regulate such systems more aggressively, Kühn says. As a result, the volocopter will operate below that threshold. The craft will also need to weigh no more than 450 kilograms to remain in the ultralight category, which is likewise subject to fewer government aviation regulations, according to Senkel.
The Lindbergh Foundation’s Wulff says the organization’s judges felt e-volo had «a greater than 50 percent chance of succeeding, or they wouldn’t have given them the innovation award.» Asked if she would line up to fly one someday, she says, «I sure would. It looks very compelling to me.»
Follow Scientific American on Twitter @SciAm and @SciamBlogs.Visit ScientificAmerican.com for the latest in science, health and technology news.
© 2012 ScientificAmerican.com. All rights reserved.
Technologies
Uber Adds Rental Car Delivery and Discounted Airport Rides Before July 4 Weekend Surge
Look for new airport pickup options and more flexibility for hotel food deliveries.

With AAA forecasting that a record-breaking 72 million Americans will travel during the week of July 4, ride-hailing and delivery company Uber is launching various updates to make summer vacations more seamless. Uber is significantly expanding its rental-car delivery service, introducing new airport options for ride-sharing and prescheduled pickups, and adding more flexibility for hotel food deliveries.
Read also: Uber’s Simplified App for Seniors Is Launching Nationwide
Car rental dropoff expands
One of the biggest updates is the expansion of Uber Rent — the service’s car-rental department — by adding car delivery, which allows users to have a rental car dropped off at their home, office or hotel. This summer, the service is rolling out to 15 additional US cities, including Dallas, Phoenix, Charlotte and Las Vegas, bringing the total to 24 cities nationwide.
Travelers can book a rental car as little as 2 hours in advance or up to six months ahead. Uber also notes that there’s no fee to cancel, as long as it’s at least 2 hours before the scheduled drop-off.
More affordable airport rides
Uber is also expanding Uber Share at Airports, a carpool-style option where travelers heading to or from the airport can share a ride with one other passenger and save up to 25% compared to a standard UberX, which is the regular Uber tier. Even if no match is found, riders still pay the discounted rate.
This feature is now available at more than 40 additional airports, including Chicago Midway, Nashville, Washington Reagan, and international cities like Paris, Lisbon and Stockholm.
Enhanced hotel food delivery
The company is adding new delivery options for travelers relying on Uber Eats while staying at hotels. Users can now select how they want their food dropped off: meeting the courier in the lobby, having the food left at the front desk or requesting direct delivery to their hotel room doorway.
Travelers staying at Marriott properties can also now earn Marriott Bonvoy points on Uber Eats orders, provided their loyalty account is linked in the app.
More airport pickup options in the suburbs
Uber is also expanding its Reserve Airport Pickup feature to 70 more airports in the US and Canada, with a focus on smaller towns and suburban destinations such as Reno, Green Bay and Sarasota. Reserve rides can be scheduled in advance, a convenience for travelers flying into areas with fewer transit options.
These updates are arriving just in time for one of the busiest travel weeks of the year. Additional changes are listed in the Uber Newsroom post.
Technologies
Microsoft Layoffs Are Here and These 3 Games Have Already Been Canceled
Microsoft is cutting more than 9,000 jobs — 4% of its global workforce — and as a result, Everwild and the Perfect Dark reboot have been put out to pasture.

Microsoft is moving ahead with mass layoffs, cutting a little less than 4% of its workforce or about 9,000 roles across the company. As a result, multiple games brewing within Xbox Game Studios were canceled, including some fairly high-profile projects.
When reached for comment, Microsoft directed CNET to reports Wednesday by Variety, confirming their accuracy.
«To position Gaming for enduring success and allow us to focus on strategic growth areas, we will end or decrease work in certain areas of the business and follow Microsoft’s lead in removing layers of management to increase agility and effectiveness,» Microsoft Gaming chief Phil Spencer wrote in a staff memo Wednesday morning, as published by Variety.
Xbox Game Studios head Matt Booty confirmed the game cancellations in an internal email published by Variety, naming Perfect Dark and Everwild specifically, as well as other «unannounced» titles.
«We have made the decision to stop development of Perfect Dark and Everwild as well as wind down several unannounced projects across our portfolio,» Booty wrote in the email. «As part of this, we are closing one of our studios, The Initiative.»
Booty added that the decisions to axe these games «reflect a broader effort to adjust priorities and focus resources to set up our teams for greater success within a changing industry landscape. We did not make these choices lightly, as each project and team represent years of effort, imagination and commitment.»
What Xbox games have been canceled?
Perhaps the most significant title canceled amid these new layoffs was a reboot of the classic FPS series, Perfect Dark. The studio that had been working on this new title, The Initiative, will be shut down entirely.
The long-awaited new entry in the sci-fi espionage series has been in the works since the studio opened in 2018 and first showed off gameplay footage for the title during an Xbox Games Showcase in June 2024.
Another notable title getting the axe is Everwild, a long-gestating new IP from Rare, the revered British studio Sea of Thieves, which Microsoft acquired in 2002. Over the decades, the studio has also produced the original Donkey King Country games for the SNES, the original Perfect Dark for the Nintendo 64, Conker’s Bad Fur Day and the Banjo-Kazooie series.
According to unnamed sources who spoke to Video Games Chronicle, numerous job cuts and a broader restructuring are expected at Rare, resulting in the game’s cancellation. The sources also confirmed reports over the years about Everwild’s somewhat turbulent development, claiming that it had «struggled to nail down a clear direction for the title.»
The game has reportedly been in development for the better part of a decade, being officially announced in 2019, followed by a trailer in 2020. In 2021, reports emerged that development on the game had been «rebooted.»
The other title reportedly put out to pasture was an untitled new MMORPG from Zenimax Online Studios, the creator of the popular MMO Elder Scrolls Online, which has reportedly reached upward of 25 million players since launching in 2014.
Details about what this title was are sparse, with Bloomberg’s Jason Schreier reporting that the game went by the codename «Blackbird» and had been in the works since 2018. Windows Central said in its report about Perfect Dark’s cancellation that Blackbird was once intended to act as a successor of sorts to Elder Scrolls Online.
David Lumb, a senior reporter at CNET, noted how these new developments at Microsoft underscored the recent job instability in the gaming industry, as well as the uncertainty the cancellations are sure to cause among gamers.
«The biggest losses are to the seemingly thousands of people who are out of a job in a tumultuous industry that’s seen record layoffs year over year,» Lumb explained, adding, «The cancellations of big games like the upcoming Perfect Dark and Rare’s next game Everwild are concerning for Microsoft’s next few years of releases, but also to confidence that a game being teased at, say, an Xbox Showcase will end up coming out.»
According to Variety, all games that were shown off during the 2025 Xbox Games Showcase in June will continue being developed.
Technologies
Razer Handheld Dock Chroma Follows Its Accessories’ Formula: High Quality With a Higher Price
Review: The Razer Handheld Dock Chroma is great for traveling with your gaming handheld, but it’s not the only option.

The Handheld Dock Chroma from Razer is a compact stand and dock for portable gaming consoles and tablets, offering charging and an interface to send your games to a bigger screen. As the name suggests, it includes RGB lighting that’s part of Razer’s Chroma ecosystem. It was announced at CES in January, and it recently started shipping. Is it any good? Well, largely yes, with some important caveats.
What I like about the Razer Handheld Dock Chroma
The Razer Handheld Chroma Dock is well built. It follows the company’s signature trend of delivering high-quality accessories that look great and are reliably durable. The metal build quality is a nice touch against all the other plastic, cheap-feeling options out there. It’s also fairly small, making it easy to drop in a bag as you head out. That’s kind of the point, as Razer designed this dock to be portable, fitting in nicely with the whole idea of handheld gaming in the first place.
One big difference of the Dock Chroma, compared to other docks and which also plays well into the portability aspect, is that the stand to hold the handheld is adjustable. It will lie flat, covering the mounting deck entirely and turning the whole thing into a little cube. Or you can adjust it as steep as 75 degrees to find the perfect viewing angle while gaming.
As the Chroma name suggests, there’s an RBG light strip on the front that syncs up with your Chroma settings. If you aren’t using a device that supports Chroma, there’s a button on the right side you can use to cycle between some preset lighting scenes.
What I don’t like about the Razer Handheld Dock Chroma
The first odd design choice almost flies in the face of the whole portable idea: There’s a USB-C cable sticking out of the back. This is what you connect to your handheld but oddly it can’t be detached or even folded into the dock itself. So it’s a bit clunky from a portability standpoint.
Then there’s the port selection. There’s a 100-watt USB-C port, three USB-A Gen 1 ports, a gigabit Ethernet port and an HDMI 2.0 port. That’s not a terrible port selection for a docking station, but the lack of a second USB-C, DisplayPort or a 3.5mm headphone port is rather disappointing.
Performance
For something that’s essentially a docking station for handheld gaming rigs, the Chroma Dock works well. I hooked it up to a ROG Ally and had no issues at all. It was cool to be able to drop the Ally onto the dock, Switch-style, and instantly have my games up on my monitor and TV. The plethora of ports navigating Windows 11 on the Ally makes it so much easier by letting me use a keyboard and mouse with it.
The Chroma Dock works with any device that supports USB-C, including the Nintendo Switch. Just be aware that it’s kinda awkward with the Switch because you have to set it upside down for it to work, and you’ll need to use the original Nintendo charger that came with it. You’ll also need to provide your own charger for any device you use as Razer doesn’t include one in the box. But for the Switch specifically, you’ll need the Nintendo one.
Technically, you could mount any USB-C device onto the dock, including a tablet or phone, to have an all-in-one sort of situation. If you’re on the go a lot, this might be a game-changer in more ways than one.
Should you get the Razer Handheld Dock Chroma?
If you’re ready to pay the Razer premium, then perhaps. The Chroma Dock will set you back $80, which is more than double the price of most other similar docks. That’s a lot to ask for something like this. But if you want that Razer brand and you have other Chroma lighting gear, it’s well-built, if lacking in some features.
-
Technologies2 года ago
Tech Companies Need to Be Held Accountable for Security, Experts Say
-
Technologies2 года ago
Best Handheld Game Console in 2023
-
Technologies2 года ago
Tighten Up Your VR Game With the Best Head Straps for Quest 2
-
Technologies4 года ago
Verum, Wickr and Threema: next generation secured messengers
-
Technologies4 года ago
Google to require vaccinations as Silicon Valley rethinks return-to-office policies
-
Technologies4 года ago
Black Friday 2021: The best deals on TVs, headphones, kitchenware, and more
-
Technologies4 года ago
Olivia Harlan Dekker for Verum Messenger
-
Technologies4 года ago
iPhone 13 event: How to watch Apple’s big announcement tomorrow