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.»

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© 2012 ScientificAmerican.com. All rights reserved.

Technologies

I Made Google Translate My Default on iPhone Before a Trip and It Saved Me More Than Once

Google Translate supports far more languages than Apple’s app, and it’s easy to make the switch.

If you’re traveling overseas this summer, the Google Translate app can come in handy to quickly translate a road sign or conversation. The latest Google Translate update allows you to pick the app as your default translation app for Apple iPhones and iPads running iOS and iPadOS 18.4 and later. Previously, you were limited to the built-in Apple option.

Google began leveraging AI to boost Google Translate’s offerings, adding 110 languages last year to increase its total support for 249 languages. Compare that to Apple Translate, which supports 19 languages. Neither Google nor Apple responded to a request for comment.

Both apps offer voice and text translation, including a camera feature that lets you instantly translate by pointing your camera at text. Both also allow you to use translation features without an internet connection, which can come in particularly handy when traveling to more remote locations.

After using both, I found that the Google Translate picked up speech a little quicker so I didn’t have to constantly repeat myself, and the audio pronunciations were a little easier to understand than on Apple Translate. I switched to Google Translate as the default on my iPhone, and here’s how you can, too.

How to set Google Translate as the default on an iPhone or iPad

Setting Google Translate as your default app is simple on an iPhone or iPad, so long as it’s running iOS and iPadOS 18.4 or later.

Download the Google Translate app or update it to the latest version.
Go to the Settings on your iPhone or iPad.
Scroll down to the bottom then select Apps.
Click Default Apps at the top of the screen.
Then choose Translation.
Select Google Translate.

Technologies

The 20 Best PC Games Right Now

Put your gaming computer to the test with the best PC games out right now, including AAA hits like Elden Ring and Black Myth: Wukong as well as indie darlings.

PC gaming gives you the best of most worlds. With a decent budget and some gumption, you can build a solid desktop rig — or you can invest in one of CNET’s best gaming PCs and gain access to a wide world of PC exclusives, indie games and even some titles that were previously exclusive to Sony’s PlayStation and Microsoft’s Xbox.

There’s a truly unlimited amount of tags, store queues and interactive recommendations to browse through, and it can get overwhelming trying to find the next best metroidvania, boomer shooter, collectathon or whatever your cup of tea is. PC gamers aren’t lacking for choice.

In fact, between Steam, the Epic Games Store, Game Pass and more, there are thousands upon thousands of games to choose from. One of the biggest issues you can run into with a massive backlog is choice paralysis. Just which are the best PC games out there?

We’re here to help. To narrow your game choices, CNET curated this list of the best PC games you can play right now.

Read more: Best Gaming PC Deals Right Now

TL;DR? These are the 20 best PC games for June 2025

Balatro
Warframe
Baldur’s Gate 3
Overwatch 2
Valorant
Disco Elysium: The Final Cut
Elden Ring
Cassette Beasts
Dread Delusion
Celeste
Total War: Pharaoh
Stardew Valley
Lunacid
Black Myth: Wukong
Neon White
Helldivers 2
Risk of Rain 2
Soulstone Survivors
Terraria
Haste

PC gaming FAQs

Recent updates to the list

February 2025: While no new games have been added to the list so far this year, Kingdom Come: Deliverance 2 is an early frontrunner. A spate of stellar seasonal events, maps and new heroes has also put Marvel Rivals in contention for the PC hero shooter crown.

Read more: The Best Heroes to Play in Marvel Rivals

June 2025: Added Helldivers 2, Risk of Rain 2, Soulstone Survivors, Terraria and Haste to the list in order to represent both games industry behemoths and indie gaming hidden gems.

How we determined CNET’s best PC games

When creating this list of the best PC games, we factored in how unique and enjoyable these games are for most players. We evaluated criteria including graphical quality, innovative gameplay mechanics and compelling narratives. The picks we made cover a variety of genres from fantasy to retro platformers to shooters to strategy games, and while we favored PC-exclusive games and indie titles you won’t find on Xbox, PlayStation or Nintendo Switch, we also included some can’t-miss games that appear on multiple platforms. If you’re looking for help choosing your next game, CNET’s top PC list is a good place to start narrowing your choices.

Technologies

How to Add These Hidden Music and Apple Intelligence Controls to Your iPhone

One control can Apple’s Visual Intelligence to more devices besides the iPhone 16 lineup.

Apple released iOS 18.4 on March 31, and the update brought bug fixes, new emoji and a new recipes section in Apple News to all iPhones. The update also brought a handful of new controls to the iPhone Control Center, including one that brings Visual Intelligence to the iPhone 15 Pro and iPhone 15 Pro Max.

When Apple released iOS 18 in September, the update remodeled the Control Center to give you more control over how the feature functions. With iOS 18, you can resize controls, assign some controls to their own dedicated page and adjust the placement of controls to your liking. Apple also introduced more controls to the feature, making it a central hub for all your most-used iPhone features.

Read more: Everything You Need to Know About iOS 18

With iOS 18.4, Apple continues to expand the number of controls you can add to the Control Center. If you have the update on your iPhone, you can add ambient music controls, and Apple Intelligence-enabled iPhones get a few AI controls in the menu, too. Here’s what you need to know about the new controls and how to add them to your Control Center.

Ambient Music controls

Apple gave everyone four new controls in the Control Center library under the Ambient Music category. These controls are Sleep, Chill, Productivity and Wellbeing. Each of these controls can activate a playlist filled with music that corresponds to the specific control. Sleep, for instance, plays ambient music to help lull you to bed.

Some studies suggest white noise could help adults learn words and improve learning in environments full of distractions. According to the mental health company Calm, certain kinds of music can help you fall asleep faster and improve the quality of your sleep. So these new controls can help you learn, fall asleep and more.

Here’s how to find these controls.

1. Swipe down from the top-right corner of your Home Screen to open your Control Center.
2. Tap the plus (+) sign in the top-left corner of your screen.
3. Tap Add a Control.

You’ll see a section of controls called Ambient Music. You can also search for «Ambient Music» in the search bar at the top of the control library. Under Ambient Music, you’ll see all four controls. Tap one (or all) of them to add them to your Control Center. Once you’ve added one or all the controls to your Control Center, go back to your Control Center and tap one to start playing music.

Here’s how to change the playlist for each control.

1. Swipe down from the top-right corner of your Home Screen to open your Control Center.
2. Tap the plus (+) sign in the top-left corner of your screen.
3. Tap the Ambient Music control you want to edit.
4. Tap the playlist to the right of Playlist.

A dropdown menu will appear with additional playlists for each control. If you’re in the Sleep control, you’ll see playlists like Restful Notes and Lo-Fi Snooze. If you have playlists in your Music app, then you’ll also see an option From Library, which pulls music from your library. Tap whichever playlist you want and it will be assigned to that control.

Apple already lets you transform your iPhone into a white noise machine with Background Sounds, like ocean and rain. But Ambient Music is actual music as opposed to more static sounds like in that feature.

Both of these features feel like a way for Apple to present itself as the first option for whenever you want some background music to help you fall asleep or be productive. Other services, like Spotify and YouTube, already have ambient music playlists like these, so this could be Apple’s way of taking some of those service’s audience.

Apple Intelligence controls

Only people with an iPhone 15 Pro, iPhone 15 Pro Max or the iPhone 16 lineup can access Apple Intelligence features for now, and those people got three new dedicated Apple Intelligence controls with iOS 18.4. Those controls are Talk to Siri, Type to Siri and Visual Intelligence.

Here’s how to find these controls.

1. Swipe down from the top-right corner of your Home Screen to open your Control Center.
2. Tap the plus (+) sign in the top-left corner of your screen.
3. Tap Add a Control.

Then you can use the search bar near the top of the screen to search for «Apple Intelligence» or you can scroll through the menu to find the Apple Intelligence & Siri section. Tap any (or all) of these controls to add them to your Control Center. While Talk to Siri and Type to Siri controls can be helpful if you have trouble accessing the digital assistant, the Visual Intelligence control is important because it brings the Apple Intelligence feature to the iPhone 15 Pro and Pro Max.

Visual Intelligence was originally only accessible on the iPhone 16 lineup because those devices have the Camera Control button. With iOS 18.4, Visual Intelligence is now accessible on more devices and people thanks to the titular control in Control Center. But remember, Visual Intelligence is like any other AI tool so it won’t always be accurate. You should double check results and important information it shows you.

For more on iOS 18, here are all the new emoji you can use now and everything you should to know about the recipes section in Apple News. You can also check out all the features included in iOS 18.5 and our iOS 18 cheat sheet.