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.»

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If you love smart home devices or rely heavily on your portable devices to help you get through the day, then you that a shortage of electrical outlets can be inconvenient. Luckily, Baseus is behind some nifty charging devices that can help you solve this issue and make sure every one of your devices can get its duly needed recharge. We’ve spotted the Baseus Blade 140W charging station for just $70 right now. This saves you $30 and even better, Amazon is including two free 45W USB-C chargers as well. Not only is this a great opportunity to save on this charging device, you might also be able to avoid potentially rising costs due to tariffs on electronic devices and accessories.

This Baseus Blade charging station is a 6-in-1 powerhouse with two electrical outlets, one USB-A port and three USB-C ports for a convenient place to charge your laptop, tablet, smartphone, lamp and other necessary work devices. Its smart display also shows you how much power is being distributed per port.

Hey, did you know? CNET Deals texts are free, easy and save you money.

Thanks to its GaN technology, this charging station is safe to use and is built to prevent overheating and keep your devices safe. Amazon is also throwing in two 45W charging blocks valued at $35, which makes this deal even sweeter and lets you charge even more devices.

Looking for charging devices but not sure if this deal is right for you? Check out our list of the best USB-C chargers, docks, hubs and more.

Why this deal matters

This Baseus Blade 6-in-1 charging station is not only $30 off, it also includes two 45W charging blocks so you can expand your charging options at home or during travels. That makes now a great time to stock up and potentially save before tariffs start affecting the price of electronic goods and accessories.

Apple is holding its Worldwide Developers Conference on June 9, where we will likely get a glimpse of the upcoming iOS 19. Before that announcement, Apple released iOS 18.5 on May 12, more than a month after the company released iOS 18.4. While iOS 18.4 brought more emoji to all iPhones, this latest update adds just a few small changes and a new Pride wallpaper to your iPhone. The update also includes some bug fixes and security patches everyone should download to help keep their device secure. 

Read more: What CNET’s Experts Hope to See in iOS 19

You can download iOS 18.5 by going to Settings > General > Software Update, then tapping Update Now and following the prompts on your screen.

Here’s what iOS 18.5 brings to your iPhone. Just a reminder, only people with an iPhone 15 Pro, Pro Max or the iPhone 16 lineup can access Apple Intelligence for now. If you have any other iPhone, you won’t have access to those features.

New Pride wallpaper

Apple releases a new Pride wallpaper ahead of Pride Month every year, and this year is no different. iOS 18.5 includes the latest iteration of the wallpaper, «Pride Harmony,» which features bold stripes that shift and change position as you move. 

iOS 18.5 tweaks Mail options

Apple introduced a few Mail app updates in iOS 18.5. One of those updates makes it easier to adjust the app’s settings by showing or hiding contact photos in Mail. Contact photos are the images to the left of emails that help identify senders. 

Mail will show Contact Posters by default, but you can turn them off from within the app with iOS 18.5. To do so, open Mail, tap the three dots (…) in the top-right corner of your screen, and then tap Show Contact Photos. Now, all your emails will just show the subject line and a preview of the message, similar to how Mail looked before iOS 18.

This option is in iOS 18.4, but it’s buried in Settings and not easy to locate. 

Another update concerns Categories. If the mode is enabled, you can see a small tab on the right side of your screen near the other categories. Swipe the categories bar near the top of Mail to the left, and this small tab will expand to reveal the category All Mail. When you swipe left to view All Mail, it will automatically be selected, and you’ll need to tap one of the other Categories to unselect All Mail.

This category isn’t new; you could find it in iOS 18.4. But, there was no small tab on the right side of your screen to signal it was present off-screen. Therefore, All Mail flew under the radar — I didn’t even know the option was there until beta versions of iOS 18.5.

This category appears to be a way to simultaneously enable Categories and List View — the pre-Categories view of Mail. When you use All Mail, you’re viewing your messages without any categorization, like in List View.

Satellite features for all iPhone 13 models

Apple’s iOS 18.5 also brings certain satellite features, like messaging, to the iPhone 13 lineup. That means if you go off the grid, you could still text people to let them know where you are. However, these features on iPhone 13 models are carrier dependent, and currently only T-Mobile offers them in the US via Starlink. 

T-Mobile Starlink is in beta, and the beta is free and open to anyone until July, including people on other carrier plans. After July, it will be part of the T-Mobile Experience Beyond and Go5G Next plans. People with other carriers, like Verizon and AT&T, will then be able to access the system for $10 a month. 

Back Tap banner

The iOS 18.5 update also introduces the option to display a banner using the Back Tap function. Back Tap turns the Apple logo on the back of your iPhone into a usable button that can open your camera, take a screenshot and more when you double- or triple-tap it. And with iOS 18.5, you can make your iPhone display a banner whenever you use Back Tap.

To enable the banner, go to Settings > Accessibility > Touch > Back Tap and tap the toggle next to Show Banner. If you enable the banner and use Back Tap, the banner will appear across the top of your screen and read, «Back Tap Double/Triple Tap detected.»

iOS 18.5 release notes

Here are the full release notes for iOS 18.5.

This update also includes the following enhancements and bug fixes:

• A new Pride Harmony wallpaper.
• Parents now receive a notification when the Screen Time passcode is used on a child’s device.
• Buy with iPhone is available when purchasing content within the Apple TV app on a third-party device.
• Fixes an issue where the Apple Vision Pro app may display a black screen.
• Support for carrier-provided satellite features is available on iPhone 13 (all models). For more information, visit: 
  https://support.apple.com/122339.

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit: 
https://support.apple.com/100100

For more iOS news, here’s what features were included in iOS 18.4 and iOS 18.3. You can also check out our iOS 18 cheat sheet and what we hope to see in iOS 19.