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September 02, 2018 01:00 AM

Automakers' soaring ambitions for flying cars start to take shape

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    Aston Martin says the Volante Vision Concept previews a potential flying autonomous hybrid-electric vehicle for urban and inter-city air travel.

    When it comes to visionary thinking, perhaps the most jaw-dropping concept from one of Volkswagen Group's brands was not a high-tech robocar, such as the Audi Aicon. Nor was the idea born in any of VW Group's three so-called Future Centers that the automaker operates around the world.

    Instead, its genesis took shape in Turin, the heart of Italy's automotive sector. It was November 2016, the Geneva auto show was only months away, and staff at Audi subsidiary Italdesign didn't know what direction to take with their minicar concept.

    Then after extensive brainstorming, designers had an epiphany. Soon after that, they traveled to Toulouse, France, for talks with the European aviation giant Airbus — the result was the first modular flying drone concept, the Pop.Up.

    In theory, this wheeled vehicle allows the passenger cabin to detach from the chassis and integrate with a flight module. The combined unit then takes off using lift generated by four pairs of counter-rotating rotors.

    The Pop.Up's debut last year was such a success that Audi protectively slapped its distinctive four-ringed logo on the concept before the unveiling of an updated version called the Pop.Up Next, at this year's Geneva show. Audi and Airbus recently signed a deal to test air taxis like the one designed from Italdesign around Audi's southern German hometown of Ingolstadt, which has heavy traffic congestion because of the automaker's rapid growth over the past decade.

    "We could fly the Pop.Up by the end of 2019 if we decide it's the right way to go," Mark Cousin, Airbus' senior vice president and head of flight demonstrators, told Automotive News Europe.

    Audi put its distinctive four-ringed logo on the Pop.Up Next, designed by its Italdesign subsidiary.

    Dream come true?

    Ever since the automobile and airplane arrived at the start of the last century, people have dreamed of a time when the two inventions would merge and cars ultimately could take flight.

    No shortage of science fiction works suggested it was inevitable, including the Spinners that crisscrossed the night skies of futuristic Los Angeles in the 1982 movie "Blade Runner."

    Yet the car by and large has seen no paradigm shift in concept, with the possible exception of the electric powertrain popularized by Elon Musk's Tesla Model S. Billionaire tech investor and former Musk partner Peter Thiel lamented seven years ago that progress chose social media services such as Twitter over the Spinner. "We wanted flying cars; instead, we got 140 characters," Thiel said.

    That might change, ironically, because of the unintended consequences of automakers enabling access to individual mobility to more people across the globe. Urban infrastructure the world over has failed to keep pace with rising rates of car ownership, and the resulting daily congestion has had a detrimental effect on economic efficiency, resource management, the environment as well as public health and safety.

    By the middle of the century, two-thirds of the world's population will live in cities, according to United Nations forecasts. Most aspire to own a car.

    "Already in cities such as New York, Jakarta and Beijing, we see huge traffic jams. With global automobile sales expected to increase to a figure of about 125 million by 2025, this situation is only going to get worse," said Carl Dietrich, founder and chief technical officer of U.S. flying car startup Terrafugia.

    "Particularly in urban areas, the existing infrastructure simply cannot support the increase in population numbers and expected increase in number of vehicles."

    Terrafugia was acquired in November by Chinese auto tycoon Li Shufu's Zhejiang Geely Holding Group, parent of Volvo Cars.

    Dietrich, who graduated from the Massachusetts Institute of Technology with a doctorate in aeronautical engineering, aspires to one thing. "My goal is to make personal aviation a practical transportation option for everyone – to turn the dream of the flying car from science fiction into reality," he says.

    Terrafugia is working on its first prototype. But its resemblance is closer to a small airplane than a car, and the aptly named "Transition" requires a pilot's license to operate it. For the technology to have a true effect, barriers such as the requirement of a license quickly would limit its mass-market potential.

    AUTOMOTIVE NEWS EUROPE MONTHLY MAGAZINE

    This story is from Automotive News Europe's latest monthly magazine, which is also available to read on our iPhone and iPad apps.You can download the new issue as well as past issues by clicking here.

    VTOLs evolve

    By 2023, Dietrich plans to launch a car that takes off and lands vertically without needing a runway, so it can be used in urban environments.

    The potential of so-called VTOLs and other drone concepts is being recognized by other automakers besides Audi and Geely.

    Daimler acquired a stake in a German air-taxi startup called Volocopter, displaying a version prominently outside its trade fair hall at last September's Frankfurt auto show.

    Aston Martin CEO Andy Palmer believes air travel will be a crucial part of future transportation. In July, the British company unveiled the Volante Vision Concept at the Farnborough air show in England.

    It said the three-seat VTOL vehicle previews a potential flying autonomous hybrid-electric vehicle for urban and inter-city air travel.

    Porsche is considering whether to develop a flying car, too. Sales chief Detlev von Platen, a hobby pilot himself who used to own a Piper Saratoga prop plane, headed to Italdesign's stand during this year's Geneva show to admire the Pop.Up Next and talk with the company's CEO, Joerg Astalosch.

    "This is a field which we are looking at seriously," von Platen said. "So far the progress we have made and the analysis of potential concepts gives us a lot of confidence. We are not talking about a fantasy — it's feasible."

    Porsche is looking at a range of ideas, he said, from a completely autonomous flying vehicle where you just push a button, to something that gives customers the possibility of piloting the aircraft without a license.

    In the case of the latter, the onboard system would assume control should the occupant depart from a specific set of predetermined parameters referred to as the flight envelope.

    However, Porsche would not try to build its own. "If we do this, we will go with partners," von Platen said.

    Also taken by the idea is Philipp von Hagen, head of portfolio management for the Porsche and Piech family holding that controls the VW Group. "The flying car as a regular means of transport can become a reality by 2025," von Hagen said. "Drones are agile and quiet due to their electrical propulsion and both more affordable as well as more environmentally friendly than today's helicopter."

    Research indicated that the market could reach $32 billion (about 27.4 billion euros) by 2035, he said.

    Uber, Google interest

    Unsurprisingly, tech companies are also attracted to the potential. Uber Elevate, a division of the ride-hailing giant, imagines a future where uberAIR flying taxis ferry passengers from one "vertiport" to the next. This could cut the 32 km commute between India's bustling economic center of Gurgaon and downtown New Delhi from a staggering 100 minutes to just six, for example — all for only $37 (about 32 euros), it estimates.

    In early May, the company announced at its second annual Uber Elevate summit that it was partnering with none other than the U.S. National Aeronautics and Space Administration (NASA) to advance its goals.

    "Urban air mobility could revolutionize the way people and cargo move in our cities and fundamentally change our lifestyle much like smartphones have," Jaiwon Shin, an associate administrator at NASA, said after creating the agency's first ever agreement specifically focused on researching the technology.

    Uber isn't the only San Francisco native reaching for the sky. Sebastian Thrun, an artificial-intelligence expert and the father of the autonomous-car program that eventually became Waymo, is CEO of a startup backed by Google founder Larry Page that also aims to commercialize this idea.

    Thrun's company – called Kitty Hawk after the site where the Wright brothers took their maiden flight in 1903 – unveiled Cora in March.

    This experimental two-man aircraft uses one dozen vertical rotors to get airborne before a separate propeller in the rear takes over, helped by two wings spanning 11 meters to maintain lift. Cora, entirely powered by electricity and autonomously piloted, can reach speeds of 180 kph and has a range of about 100 km.

    For the moment, startups such as Kitty Hawk and Terrafugia are still working on concepts, and it is unclear which approach will win acceptance in the market.

    Some, like the Volocopter, rely only on rotors for lift and propulsion. Attaching wings to help maintain elevation can reduce a battery's power consumption, but it adds structure and weight, which pushes up the power requirement during liftoff and touchdown.

    "The key will be coming up with the best architecture to generate lift during forward flight, some of which would then come from harvesting the [air] velocity flowing over some static surfaces rather than only from the rotors," said Airbus' Cousin.

    He thinks that three main challenges must be addressed to bring the technology to market, only one of which is reducing the cost to a third or even a quarter of that needed to operate a twin-engine helicopter. Much like autonomous cars, other key factors are safety and social acceptance, including noise pollution.

    Typically, the rotor tips on a helicopter move at close to supersonic speed, with the blades constantly flying through each other's wake. That creates the characteristic loud chopping sound ill-suited to the needs of urban transport. "Noise reduction is one of our major targets," Cousin said. "The vehicles have to be much quieter than helicopters, which are too noisy to operate in cities today."

    The best way this could be achieved is by turning the rotor blades slower. While that sacrifices performance, it is much easier to do this with electric propulsion than gas turbines, Cousin said. Once the vehicle has created sufficient lift to take off, then noise becomes less of an issue because it can simply fly higher.

    "The vehicles also have to be fundamentally safer," Cousin said. "Helicopters are designed to achieve a certain level of safety, which only works when the number of hours you're flying is relatively small, as it is today. If you start flying millions of hours per year, then the statistical accident rate would just be unacceptable in a city."

    12-minutes to Heathrow

    The Pop.Up concept isn't just something exclusively for affluent clients of premium brands such as Audi, either. Rather, it has the potential to be a major disruptor to existing urban mobility models. Cousin uses the example of a 12-minute trip to Heathrow from London's city center versus 90 minutes in a self-driving car.

    "Even if it costs 10 times [more] to operate, if I can do 10 flights during the time that an autonomous car is stuck in traffic, the price of the journey is the same at the end, and then which one are you going to take?" Cousin said. "Who is going to want to sit in an autonomous car for that long?"

    There may be unintended benefits which could help with social acceptance, according to Munich-based Lilium, a startup that aims to achieve its first manned flight next year. The company thinks its prototype air taxi could reduce travel times by a factor of five, meaning more people could live in the countryside and still commute to work in the city. This could make downtown housing more affordable as proximity to one's employer becomes less of a factor for apartment hunters. "This technology has been a dream for the last 50 years," Airbus' Cousin said. "It's now much closer than any of us think."

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