NASA's ‘Son of Concorde' jet that will HALVE flight time from US to London step closer to take-off with runway test
The X-59 jet will even break the sound barrier when it flies - but won't produce a sonic boom, thanks to its unique design.
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When up and running, the aircraft will hurtle along at altitudes of at speeds of 937mph at 55,000 feet up.
Nasa revealed it struck another milestone in the plane's journey toward the skies with crucial low-speed taxiing tests.
The X-59 moved around purely under its own power for the first time at US Air Force Plant 42 on July 10.
Taxiing is the final stage of ground tests before Nasa can take it up into the skies - and the maiden voyage is chalked for later this year.
Over the coming weeks, pilots will gradually increase the speed on the runway - leading to high-speed manoeuvres when it will travel fast enough to take off.
Engineers tested key systems like steering and breaking during the low-speed run through.
Nasa said: "These checks help ensure the aircraft's stability and control across a range of conditions, giving pilots and engineers confidence that all systems are functioning as expected."
The X-59 is the crown jewel in Nasa's Quesst mission - which aims to prove supersonic flight is possible without a deafening sonic boom.
Instead, the X-59 will produce a much quieter sonic "thump".
Currently, commercial passenger planes are banned from going at such speeds – if they were able to – over land in the UK and US on account of the noise levels.
Near-supersonic jet that can fly London-New York at speeds 'not seen since Concorde' unveiled with luxury living spaces
The 30m-long and 9m-wide X-59 has a sharp, stiletto-style nose that engineers believe will reduce the noise
The space agency believes their new jet could fly from London to New York in three-and-a-half hours.
Lori Ozoroski, a project manager at Nasa, previously said: "We had a commercial supersonic aircraft, the Concorde.
"But it was limited during its flights that it could not fly, say into, you know, somewhere in the middle of the U.S.
"You were not allowed to fly supersonic over land.
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"So most of the flights were back and forth just over the ocean. And so again, that ban has been in place for 50 years, over 50 years in the US.
"A lot of international countries as well have similar bans.
"And so the whole goal of this research that we're doing right now is to lift that ban and set a speed limit for commercial supersonic aircraft rather than a speed limit."
Lori added: "The sound level is more like – we've done studies – it's more like a car door closing, you know, across the street at your neighbour's house rather than the very loud typical sonic boom."
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The Guardian
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An episode of Star Trek was playing on the giant drive-in movie screens, but the best entertainment available was watching tricked-out Cybertrucks arrive and depart. I counted at least six when I arrived, and more kept appearing: a neon orange Cybertruck with Texas plates, another floating on giant custom rims. I did not spot a single anti-Musk protester, though social media posts were advertising protests outside the diner later in the week. Musk's special projects have often unfolded with a degree of chaos. Most recently, his attempt to dismantle the large parts of the US government ended with him feuding with the president he had spent nearly $300m to elect. Serving high-end burgers to Tesla fans while they charge their electric cars should be much easier than launching space rockets, developing brain implants or running a social media platform that is not overrun with hate speech and harassment. And Musk's diner operation partners, the Los Angeles chef Eric Greenspan, who advised Mr Beast Burger, and restaurateur Bill Chait, of République and Tartine Bakery, have impressive food industry credentials. But the billionaire CEO tends to make big promises and not quite fulfill them. That appeared to be true even for a tiny burger joint. You don't have to own a Tesla to order a meal at the diner, and its appeal clearly reached far beyond Tesla drivers. There were many people in the walk-up line on Wednesday with babies and small children, some of whom were particularly excited to be visiting the Tesla Diner after seeing videos about it online. While we all waited and waited, employees in branded T-shirts brought us glasses of water and paper menus. Jake Hook, who runs a Los Angeles-focused 'Diner Theory' social media account, had described the Tesla Diner menu to me as 'all over the place', with a combination of 'very fast food shlocky' items combined with sandwiches made with 'bread from Tartine', the luxury California bakery. The diner also offers a mix of 'own the libs' and 'we are the libs' options: on the one hand, 'Epic Bacon', four strips of bacon are served with sauces as a meatfluencer alternative to french fries, and on the other, avocado toast and matcha lattes. There was a kale salad served in a cardboard Cybertruck: welcome to southern California. 'Diners are kind of a reflection of the community, and it doesn't seem to really be that,' Hook told me over the phone. 'It's like a diner-themed restaurant.' An employee gave the Wednesday walk-up line another update: they didn't have chicken, waffles or milkshakes, or any of the 'charged sodas', which came with boba and maraschino cherries and extra caffeine. 'It gets better and better,' sighed a man behind me. Josh Bates and his son Phoenix were in town for the day from Orange county, where they lived. 'We are big Musk fans,' he said. Phoenix, age 10, had been excited to visit the diner. 'I never seen Elon Musk open a restaurant, so I just wanted to come here and see how the food is,' he explained. But after waiting in line for 20 minutes and not getting much closer to ordering, Bates decided it was time to find somewhere else for lunch. 'It's the grand opening – things happen,' the father said. 'It is what it is. They're doing the best they can.' Bates wasn't the only Musk fan with this attitude. Ivan Daza, 36, who lived in Los Angeles, later told me that he had waited two hours the day before, only to be told around 6 or 7pm that the Tesla Diner's kitchen was closed. He had brought his eight-year-old daughter back the next day to try again. She had seen the Tesla Diner on YouTube and was especially excited to see the Optimus robot. But it turned out that Optimus was not in operation. Daza said he was surprised by the various problems the kitchen seemed to be having – he thought they would have a 'plan B'. But he was pleased the diner offered an 'experience'. The prices, though expensive, weren't that bad for Los Angeles. The burger was $13.50, without french fries. Later, as Daza ate the meal that had taken him two days to get, he grinned: 'Delicious.' The interior design was certainly closer to Disneyland than In-N-Out: all sleek and shining chrome, futuristic 1950s white chairs and tables, and beautifully designed lighting. The curved staircase up to the Skypad was decorated with robots in display cases on the wall. Inside a curved chrome window was what looked like a pretty ordinary, low-tech restaurant kitchen. I had waited in line for a full hour before I could place my order. When I finally got to the register, I asked an employee to remind me what on the menu was actually available. She said I needed to check the screen in front of me – they had whatever was there. It turned out, contrary to what I had been told, that I could order both chicken and waffles. After the long wait outside, my food arrived in about 10 minutes – much less than the three-hour wait I feared, but absurdly long for any fast-casual restaurant. A waffle, branded with the Tesla lightning bolt, was cold. The fried chicken had a tasty coating but was also cold. The heap of kale and tomatoes was only partially dressed with an odd dill-flavored dressing. The generic-brand cola tasted cheap and was served with a woke bamboo straw. But the food did come in elaborate Cybertruck boxes – and they were, to be honest, delightful. While locals seemed to be forgiving of the new diner's glitches, some tourists were less impressed. Rick Yin, 32, who was visiting Los Angeles from China with his mother, had stopped by the diner on their way to the airport to 'grab a quick lunch' that had turned out not to be quick at all. Yin had also been excited to see the Optimus robot in action, and had hoped the diner would be 'more hi-tech'. What he had found was 'a regular restaurant'. 'It's all right,' he said, while still waiting for his food. After eating, he said he liked the Cybertruck boxes: 'That's the only thing that's worth it.' I took my meal upstairs , to the Skypad, an open-air balcony with a view of the charging Teslas. The Twilight Zone was now playing on two giant screens. I sat down next to a steady line of people buying Tesla Diner merch: a $95 retro diner hoodie, $65 Tesla salt and pepper shakers, a $175 'levitating Cybertruck' figurine. There was a large popcorn machine in front of me, which seemed to be where Optimus had been serving snacks on opening night. Musk had been posting on X earlier in the morning that 'Optimus will bring the food to your car next year' and suggesting the robot might be dressed in a 'cute' retro outfit. In reality, Optimus was nowhere in sight. The robot was 'out today', an employee told me later, as if the pricey piece of machinery were a human celebrity with a busy schedule. 'Maybe tomorrow.' 'Is it possible to get some popcorn regardless of the robot?' a woman asked. 'It's probably old popcorn,' an employee told her regretfully. A different employee warned me that I could not walk down the same staircase I had taken up to the Skypad because it was too crowded and that 'everyone's colliding with each other and trays and milkshakes'. I would have to go down another way: a bland flight of stairs without any hi-tech decoration. During a Tesla earnings call on Wednesday, as the company disclosed declining revenue and profits, Musk highlighted his new burger palace as a success: 'Diners don't typically get headline news around Earth,' he bragged. He also called the diner 'a shiny beacon of hope in an otherwise sort-of bleak urban landscape'. (It is located on Santa Monica Boulevard, in a neighborhood full of high-end art galleries.) I'd had plenty of time in the diner line to think about 'retro-futuristic' experiences, and how good a description that was, not so much for this very ordinary diner, but for the rightwing political project that Musk had joined. We were now moving into a future that offered tank-like electric cars and on-demand drone deliveries, and also a resurgence of measles outbreaks and women dying from preventable pregnancy-related complications. But continuing to function in the United States right now requires being very good at compartmentalization. I tucked away the cardboard Cybertruck lids to show my co-workers, threw away the Tesla waffles, and went on with my day. Nothing works properly here any more, but hey, it's an experience.
