雅思阅读 154: The Tube That Promised to Beat the Plane（承诺击败飞机的管道）

改编自 TU Delft / TUM Hyperloop（2023–2026年）。雅思阅读 Section 3 难度，约 1050 词。 素材来源：https://www.tudelft.nl/en/innovation-impact/pioneering-tech/articles/2026/ten-years-of-delft-hyperloop-towards-a-new-european-transport-system

Reading Passage

A. On a clear day in 2013, a long technical document landed on the internet and seized the imagination of engineers worldwide. Its author proposed a new way to travel: passengers sealed inside a streamlined pod, shooting through a sealed tube at close to the speed of sound. The name he gave the concept was the hyperloop, and the promise was breathtaking — a journey between two great cities that normally takes an hour by aeroplane could, in theory, be compressed to minutes. What made the idea more than science fiction was its elegant attack on the two physical enemies that limit how fast any ground vehicle can go. A conventional train, racing along steel rails, loses energy first to the friction of wheels on track and then, above all, to the air it must push aside. The hyperloop proposed to remove both obstacles at once: lift the vehicle so it touches nothing, and pump most of the air out of the tube so there is nothing to push against. With magnetic levitation and a near-vacuum corridor, a pod could in principle cruise at roughly a thousand kilometres an hour using remarkably little power. It was, in the words of one railway engineer, not a better train but a different species of transport altogether.

B. For a decade after that manifesto, the concept spread not through a single company but through a constellation of university teams, each competing to prove a piece of the puzzle. Student groups built scale models, raced them along test tracks, and set incremental speed records that crept upward year by year. The Technical University of Munich, later rebranded as TUM Hyperloop, emerged as one of the most persistent; its pod team drove a small vehicle past 460 kilometres an hour in competition, then moved on to construct Europe's first passenger test segment, a concrete tube long enough to test the idea at realistic scale. The milestone everyone had been waiting for arrived in July 2023, when TUM carried the first two passengers inside a tube under vacuum conditions, accelerating them to around 900 kilometres an hour. It was, the engineers emphasised, a run, not a service — a demonstration that people could sit inside the thing without the experience becoming alarming, rather than proof that tickets would go on sale next month. Universities in Delft, Toulouse and elsewhere ran parallel programmes, refining propulsion, sealing joints and designing pods light enough to levitate efficiently.

C. The physics, however, is kinder to the laboratory than to the real world, and the gap has proved stubborn. A tube that remains airtight over hundreds of kilometres is a structure of exceptional ambition. Even tiny leaks let atmospheric pressure seep back in; maintaining a near-vacuum across an entire network demands pumps, seals and monitoring equipment on a scale that has never been built for transport. A pod travelling faster than sound compresses the thin air ahead of it into a pressure wave — the so-called Kantrowitz limit — that can buffet the vehicle if the tube's cross-section is not carefully proportioned. Then there is the question of what happens when something fails. An aircraft at altitude and a train on open track both enjoy space to respond to a fault; a sealed capsule in a sealed tunnel offers none. Engineers must design for emergency evacuation, fire suppression and rapid repressurisation before any regulator will allow ordinary fare-paying passengers to board. None of these problems is unthinkable, but each multiplies cost and complexity, and no team has yet demonstrated a working route long enough to connect two cities.

D. A decade on, the mood among transport analysts has cooled from euphoria to scrutiny. The glittering market forecasts, which projected the global hyperloop industry growing into the tens of billions of dollars, still sit in consultancy reports, but the corporate consortia that once promised trans-national links have largely shrunk, pivoted or closed. One high-profile firm that had raised enormous sums to build commercial lines simply wound down its operations, leaving little behind beyond test tracks and patents. The reasons are partly financial and partly comparative. High-speed rail, for all its age, already works, and electric aircraft — though limited in range — may offer a cheaper path to faster regional travel than an entirely new infrastructure. As one Delft researcher put it, the electric airliner is still essentially an improvement on an existing mode, just as conventional rail continues to be optimised; whether a wholly new tube can outcompete both is an open question rather than a settled one. The future of the hyperloop, on this view, depends less on its top speed — which is undisputed — than on whether anyone can afford to build a tube long enough to matter.

E. None of this means the concept has been buried. Rather, it has been reinterpreted. Where a city-to-city passenger line looks daunting, a shorter, quieter use is gaining attention: moving freight through sealed tubes between ports, warehouses and industrial zones, where reliability and energy efficiency matter more than shaving minutes off a commute. The same physics — low resistance, electric propulsion, no moving contact — applies to cargo, and the safety case for unstaffed pods carrying boxes is far easier to make than for ones carrying people. Universities continue to publish, test tracks continue to run, and the underlying numbers have not changed: in a vacuum, at levitation, an electromagnetically propelled vehicle really can exceed a thousand kilometres an hour. The hyperloop is, in the end, a genuine physical possibility that has so far refused to become an economic one. Whether it graduates from demonstration to daily service may depend not on any breakthrough in speed, but on someone finding a problem — perhaps modest, perhaps local — at which the tube is simply the cheapest answer.

Questions 1-4

Choose the correct heading for paragraphs B, C, D and E from the list of headings below.

List of Headings i. How the original idea attacked the physics of speed ii. University teams turn the concept into real test runs iii. The engineering obstacles hidden behind the glamorous top speed iv. Why the supersonic airliner replaced the hyperloop entirely v. A cooler, more realistic assessment a decade later vi. The discovery of cheap vacuum pumps in 2023 vii. A quieter second life for the same technology

1. Paragraph B: ____
2. Paragraph C: ____
3. Paragraph D: ____
4. Paragraph E: ____

Questions 5-8

Choose the correct letter, A, B, C or D.

5. What two physical problems does the hyperloop design attempt to remove? A. Weather and noise pollution. B. Air resistance and mechanical friction. C. Ticket cost and driver shortage. D. Track vibration and passenger boredom.

6. What milestone did TUM Hyperloop achieve in July 2023? A. It sold the first commercial tickets. B. It carried the first passengers inside a tube under vacuum. C. It built a 500-kilometre intercity line. D. It beat the speed of sound by a wide margin.

7. Why is maintaining a near-vacuum over hundreds of kilometres difficult? A. Air keeps leaking back in through seals, demanding pumps and monitoring. B. Pods require too much fuel to pump the air out. C. Sound waves cannot travel in a vacuum. D. The tubes cannot withstand low pressure.

8. How have transport analysts' attitudes changed? A. They now regard the hyperloop as commercially proven. B. They have moved from enthusiasm to a more cautious, comparative view. C. They have abandoned all research on the topic. D. They believe tubes will replace all roads within ten years.

Questions 9-13

Do the following statements agree with the claims of the writer?

Write:

• TRUE if the statement agrees with the information
• FALSE if the statement contradicts the information
• NOT GIVEN if there is no information on this

9. The modern hyperloop concept was proposed in a document published in 2013.
10. TUM's 2023 passenger run reached around 900 kilometres an hour.
11. A commercial hyperloop line now connects two major European cities.
12. Analysts agree that electric aircraft will eventually make the hyperloop unnecessary.
13. Moving freight through sealed tubes is now seen as a more plausible near-term use.

Questions 14-15

Complete the summary below using NO MORE THAN TWO WORDS from the passage.

Lifting the vehicle and pumping air out of the tube removes the two limits to speed, while propulsion is entirely (14) __________; a more modest near-term role may instead be moving (15) __________ between industrial sites.

答案与解析

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