Thu 10 Aug 2017 - Tech

What Testing Has Taught Us

By the end of this summer, Hyperloop One will have spent more time testing a full-scale Hyperloop system than any other group in the world. In July, we shared the results of our first, full systems test flight – Hyperloop One's Kitty Hawk Moment. This was the first time in the world a full system Hyperloop was tested as a single integrated unit in the vacuum environment of our DevLoop tube. Last week, we shared the results of our second phase of trials, which deployed the complete XP-1 vehicle in the tube. XP-1 is comprised of a carbon fiber aeroshell atop our levitating chassis, which includes the components for propulsion, levitation and guidance. During phase two testing we also reached the fastest recorded speed of any Hyperloop test pod, reaching a top speed of 310 kilometers per hour, or 192 mph.



Since our ‘first flight’ was announced we’ve had a lot of interest globally in what we are building. We’ve culled our intelligence to address some of the top questions we’re getting about how Hyperloop works and share what we are learning during our tests.


How does the motor and propulsion system work?


Hyperloop One vehicles are propelled using a linear electric motor, which is a straightened-out version of a conventional rotary motor. A conventional electric motor has two primary parts: a stator (the part that stays still) and a rotor (the part that moves or rotates). When voltage is applied to the stator it makes the rotor spin and do the work of, say, spinning a power drill. A linear electric motor has the same two main parts, however, the rotor doesn’t rotate but instead moves in a straight line along the length of the stator. In the Hyperloop One system, the stators are mounted to the tube, the rotor is mounted to the pod, and the pod straddles the stators as it accelerates down the tube.


Our explainer video does a great job of bringing this to life.



Do Hyperloop systems need a complete vacuum to operate?


Hyperloop One systems are designed to work in a low-pressure vacuum, not a perfect vacuum. You don’t need a perfect vacuum to get substantial benefits from reduced aerodynamic friction. We’re aiming to function at or below 100 Pascals. A Pascal (Pa) is a measure of atmospheric pressure. The air at sea level is 101,325 Pa, so 100 Pa is roughly equivalent to the pressure exerted by a quarter laying flat on a table. During our recent testing we pulled a much lower vacuum than 100 Pa.


What would happen if there was a vacuum breach in the tube?


Our tubes are constructed out of thick, strong steel and are very difficult to puncture. However, it is reasonable to expect leaks and even the occasional breach in routes that stretch 100 miles or more. We’re designing and constructing the tube and pods explicitly to handle extremely low pressures and sudden changes in air pressure. They’ll be able to tolerate small leaks, holes, and even breaches without suffering from a vacuum collapse.


If there was a leak or breach in an operational Hyperloop system, the incoming air pressure would slow vehicles down, and we might need a power boost to get them to the next station. We will also have the ability to section off parts of the route and re-pressurize sections in the case of a significant emergency. Every pod will have emergency exits if needed, but mostly pods will glide safely to the next portal (station) or egress point in the event of an emergency. Additionally, we are building sensors throughout the pods, tubes, and system to notify of any leaks or breaches and we would be able to identify and perform maintenance to resolve any leaks quickly.


How many people will be able to travel in the pod that you shared photos of?


We recently shared images and video of our prototype levitating chassis and aeroshell that sits on top of the chassis. This upper section of the vehicle was built for aerodynamic testing and does not hold people or cargo, although it is large enough and strong enough for people to stand inside. The capacity of our production system pods will depend on the specific needs of future customers.


Why is your pod aerodynamically designed? That type of design won’t be needed in a vacuum, right?


We still have some air to deal with in the tube. The aerodynamic design will help us to understand airflow principles inside the tube, and reduce energy consumption in the low-pressure vacuum environment.


What controls the test vehicle inside of the tube?


The test vehicle departure is scheduled by our control software systems and we have sensors throughout the system, on the pod, and in the tube that provides real-time positioning and location information at all times. A set of conductive guidance rails provide electromagnetic stability during flight.


How are you going to make the technical leap from a shorter test track and slower speeds to a longer track capable of speeds upwards of 600 miles per hour?


Our current Hyperloop tests are slower than the maximum speed of a Hyperloop as the test tubes are not long (only 500 meters). Speed is a function of track length. With another 2,000 meters added, we could easily reach speeds of up to 700 mph. We are actively engaged with customers who want to build the first proof of operation facilities at lengths of 10 to 20 miles and hope to have three operational systems by 2021. We will also work in parallel to certify the control systems required to operate safely at these high speeds.


How fast will Hyperloop accelerate and decelerate? Could I get sick?


Hyperloop One pods will be designed to accelerate and decelerate gradually, no different than you’d feel on a commercial airline. During our recent phase two testing, the pod accelerated much faster, about the equivalent of going 0 to 60 mph in 1.85 seconds. However, this was a short test track and thus we needed to accelerate more quickly for testing purposes. Passenger systems would be designed with passenger comfort in mind and will achieve the kinds of speeds we’re aiming for with lower acceleration rates over longer propulsion segments.


What lessons did you learn from your testing this summer and how will those insights be applied to future tests of the system?


With every test we learn how we can become faster, more efficient, and how to make changes to improve upon systems that we will eventually build for customers in proof of operations sites. These tests helped us better integrate subsystems, improve our control systems, power electronics, and braking. Designing a system teaches you a lot, building one even more and testing it teaches you volumes – the quicker you can do this the more you learn and the faster you can take Hyperloop to the world


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FAQ

  • Q. What is Virgin Hyperloop?

    We're a privately-held company on a mission to create fast, effortless journeys that expand possibilities and eliminate the barriers of distance and time.

  • Q. Why are you building a hyperloop?

    There are too many people caught bumper-to-bumper in traffic, who have to make a hard choice with their family on where to live and work, and who are limited in their access to experiences and opportunities. We're building a system that will give back time and deliver the travel experience of the future.

  • Q. Why do we need hyperloop now?

    The number of cars is set to double worldwide by 2040, same with air and trucking. We are already dealing with the effects of pollution, lack of access, and congestion. If we only invest in the same technologies we’ve had for more than a century, tomorrow will look like today, only much worse. It’s been over a century since the Wright Brothers first showed us human flight was possible. It’s time for a new era in transportation capable of carrying us forward for the next 100 years.

  • Q. How much funding has Virgin Hyperloop received?

    To date, we have received over $400 million.

  • Q. Who are the key investors in Virgin Hyperloop?

    A major investor of ours is DP World, a leading enabler of global trade who sees the potential of sustainable hyperloop-enabled cargo systems. Additionally, we are backed by the Virgin Group, an industry leader across rail, aviation, ships, and even spacecrafts. For more on our investors, visit the company page.

  • Q. Does Virgin Hyperloop have any partners?

    Virgin Hyperloop One is the only hyperloop company that has a strategic partnership with a mass transportation company, the Virgin Group, an industry leader across rail, aviation, ships, and even spacecrafts. Another key partner of ours is DP World, a leading enabler of global trade who sees the potential of sustainable hyperloop-enabled cargo systems. Other industry-leading partners include KPMG, Foster + Partners, Systra, BIG, SNCF, GE, Deutsche Bahn, Black & Veatch, McKinsey, Deloitte, Jacobs, Turner & Townsend, ARUP, and Steer, among others.

  • Q. Is Elon Musk an investor or affiliated with Virgin Hyperloop?

    No, there’s no connection with Elon Musk.

  • Q. How do you plan to scale up operations around the world?

    We aren't just building a hyperloop; we're building a network of public and private partners to scale an integrated supply chain ecosystem. Our business model is based on partnerships that create local jobs and opportunities for those who choose to invest in this technology. We are working at the highest level of governments around the globe to put in place commercial agreements to make hyperloop a reality.

  • Q. What is hyperloop?

    Hyperloop is a new mode of transportation designed to eliminate the barriers of distance and time for both people and freight. It can travel at speeds approaching 700mph, connecting cities like metro stops - and it has zero direct emissions. The journeys can be booked on demand so there’s no wait time or delays.

  • Q. How does hyperloop work?

    With hyperloop, vehicles, called pods, accelerate gradually via electric propulsion through a low-pressure tube. The pod floats along the track using magnetic levitation and glides at airline speeds for long distances due to ultra-low aerodynamic drag.

  • Q. Has hyperloop technology been proven?

    On May 12th, 2017, we made history two minutes after midnight when we successfully launched our vehicle using electromagnetic propulsion and levitation under near-vacuum conditions at our full-scale test site in the Nevada Desert. We've since run hundreds of tests, acquiring validated knowledge that only comes from real-world testing. For more info on DevLoop, our 500 m test track, visit our progress page.

  • Q. How fast can hyperloop go?

    We estimate that the top speed for a passenger vehicle or light cargo will be 670 miles per hour or 1080 kilometers per hour. That is about 3 times faster than high-speed rail and 10-15 times faster than traditional rail. The average speed vehicles travel will vary based on the route and customer requirements.

  • Q. Why keep the tube at low-pressure and not at a perfect vacuum?

    A perfect vacuum would decrease the drag on the vehicle even more, but not significantly. We have already gotten rid of 99.9% of the air in the tube. Lower levels of vacuum than this are important if you are performing scientific experiments, but the cost would not be worthwhile.

  • Q. How is hyperloop different from high-speed trains?

    Hyperloop is an entirely new mode - think the best of trains, planes, and the metro. Hyperloop is on-demand, offering flexible travel schedules with no stops, no transfers, and no weather delays – all at speeds about 3 times faster than high-speed-rail and less cost. Hyperloop is highly efficient, with a smaller environmental impact than high-speed rail because the closed system can be tunneled below or elevated above ground, avoiding dangerous at-grade crossings. The VHO system is 100% electric and can reach higher speeds than high-speed rail for less energy due to our proprietary electric motor and low-drag environment.

  • Q. Is hyperloop safe?

    Fast, effortless journeys go hand-in-hand with journeys where everything works reliably without interference, and where all passengers feel comfortable and safe. The Virgin Hyperloop is designed to be inherently safer than other modes, with multiple redundancies in place. Our system operates autonomously in an enclosed tube and is not susceptible to weather delays, accidents from at-grade crossings, human error, or power outages. Our proprietary high-speed switching architecture eliminates unsafe track configurations and moving trackside parts, a failure point of traditional rail with mechanical switches.

  • Q. How do you plan to get hyperloop certified?

    As new mode, we have to prove our safety case to regulators and work with them to develop a regulatory framework, so passengers can ride the hyperloop in years not decades. We are encouraged by the support we are seeing at the local and federal level around the world to support hyperloop certification based on the fundamentals of safe operating that are already standard practice. In March 2019, the U.S. Secretary of Transportation, Elaine Chao, created the Non-Traditional and Emerging Transportation Technology (NETT) Council to explore the regulation and permitting of hyperloop technology to bring this new form of mass transportation to the United States. This Council is an important step forward in recognizing hyperloop is a new transportation mode and that we need to shift our mindset and acknowledge that this technology does not fit into a regulatory structure that is over 100 years old. The European Commission’s Directorate-General for Mobility and Transport (DGMOVE) has also been leading discussions with hyperloop companies to advance regulatory standards and, in India, the Principal Scientific Advisor (PSA), Prof. Vijayraghavan, has set up an independent committee called the Consultative Group on Future of Transportation (CGFT) to explore the regulatory path for hyperloop. For more, visit our regulatory progress pages.

  • Q. What will it feel like to ride hyperloop?

    While flying through a tube at more than 1000km/h might seem like a thrill ride, the truth is we are able to mitigate any uncomfortable acceleration forces within our controlled environment. The journey will be so smooth, you could sip a coffee the whole time without spilling a single drop. Normal acceleration and deceleration of 0.20 Gs will feel similar to a train. As a comparison, flooring a typical sedan gives between 0.4-0.5 Gs and commercial airplanes see 0.3-0.5Gs depending on the plane and load.

  • Q. What happens if there's a sudden breach in the tube?

    Pods will continue to travel safely to the next portal even with a large breach. Our response to a breach would be to intentionally repressurize the tube with small valves places along the route length while engaging pod brakes to safely bringing all pods to rest before it is deemed safe to continue to the next portal. A sustained leak could impact performance (speed) but would not pose a safety issue due to vehicle and system architectural design choices. This assessment is based in solid understanding and analysis of the complex vehicle load behaviors during such an event.

  • Q. Is hyperloop sustainable?

    Without a massive leap forward, pollution from the transportation industry is expected to almost double by 2050 - well above the carbon budget. By combining an ultra-efficient electric motor, magnetic levitation, and a low-drag environment, the VHO system can reach airline speeds for 5-10x less energy (depends on route length) and can go faster than high-speed rail using less energy. In regions like the Middle East, we could power the system completely by solar panels which cover the tube. As fighting against climate change becomes an existential issue for cities across the globe, hyperloop will create a new, shared, electric mobility model for helping to permanently reform an industry with some of the world’s highest carbon emissions.

  • Q. How much energy does hyperloop use?

    We are designing Virgin Hyperloop to be more efficient than other modes of transportation. Modern jetliners use up to 10 times the energy we use per passenger-mile over the entire journey. We can cruise at 500 miles per hour for less energy (per passenger) than an electric car doing 60 miles per hour. At peak speed, the VHO system consumes approximately 75 watt hours per passenger kilometer (Wh/pax-km). To put this in perspective, the fastest conventional maglev train travels at about half our speed and consumes 33% more energy.

  • Q. Where will hyperloop get its power?

    Our system is 100% electric with zero direct emissions. We're energy-agnostic. Our system can draw power from whichever energy sources are available along the route and support a transition to a renewable energy-powered future. In regions like the Middle East, we can completely power the system with solar panels which cover the tube.

  • Q. How much noise does hyperloop make?

    It’s similar those new electric vehicles that are so quiet they need to create noise to indicate movement. With hyperloop, we eliminate sources of mechanical noise, like wheels on track, and we actually have a sound barrier inherent in our tube design

  • Q. Can hyperloop be used for cargo?

    DP World Cargospeed is a global brand for hyperloop-enabled cargo systems operated by DP World and enabled by Virgin Hyperloop technology. These systems will deliver freight at the speed of flight and closer to the cost of trucking for fast, sustainable, and efficient delivery of palletized cargo.

  • Q. What type of cargo would a hyperloop system transport?

    The focus would be on high-priority, on-demand goods – fresh food, medical supplies, electronics, and more.

  • Q. How can hyperloop help transform logistics?

    With DP World Cargospeed, deliveries can be completed in hours versus days with greater reliability and fewer delays. It will expand freight transportation capacity by connecting with existing modes of road, rail, ports, and air transport, and will provide greater connectivity with manufacturing parks, economic zones, distribution centers, and regional urban centers. This can shrink inventory lead times, help reduce finished goods inventory, and cut required warehouse space and cost by 25%. DP World Cargospeed networks can also enable just-in-time, agile manufacturing practices.

  • Q. Will the first hyperloops be passenger or cargo systems?

    The Virgin Hyperloop is unique in that it doesn’t need to be passenger-only or cargo-only. We are designing a mixed-use system that fully utilizes system capacity while maximizing economic and social benefits. However, it is possible to run cargo commercial operations while certification and regulation are still ongoing for passenger use.

  • Q. When will hyperloop systems be ready for cargo and passengers?

    We are working with the most visionary governments around the world to make sure you can ride the hyperloop in years, not decades. Our goal is to have operational systems in the late 2020s. Our ability to meet that goal will depend on how fast the regulatory and statutory processes move.

  • Q. Where will the first hyperloop get built?

    We are working with visionary governments and partners around the world to make hyperloop a reality today. To learn more about our projects around the world, visit our progress page.

  • Q. How much will hyperloop cost to build and operate?

    Capital and operating costs will range widely based on the route. We recently released a study that showed our linear costs are 60-70% that of high-speed rail projects. In addition, we expect the operational costs to be significantly lower than existing forms of transportation.

  • Q. How much will hyperloop cost to ride?

    It’s simple – if it’s not affordable, people won't use it. We are looking to build something that will expand opportunities for the masses, so they can live in one city with their family and work in another. Currently, that kind of high-speed transport is not feasible for most people. The exact ticket price will vary for each route, but a recent study showed that riding a hyperloop in Missouri could cost less than the gas needed to drive.

  • Q. How are hyperloop routes selected?

    We are in the business of serving local needs, not the other way around. Public and private support is key. In some cases, we will respond to solicited bids with partners when we feel the technology matches the project’s objectives. In other cases, we will make an unsolicited bid for a project when we see that hyperloop could offer a unique solution to market needs.

  • Q. What is the process for getting a passenger route up and running?

    While the technology is different, the process for building a hyperloop is similar to that of building a highway, railway, or any other type of linear infrastructure. The first stage is project development. This phase includes feasibility studies, and then more detailed engineering reports and environmental impact studies. Once a project is approved to move forward, a consortium is formed to finance and deliver on the project.

  • Q. How much land does hyperloop require?

    Many infrastructure projects succeed or fail based on right-of-way issues. We are designing a system that requires only about half the right-of-way as high-speed rail and can more easily adapt to existing right-of-ways. At high speeds, the VHO system has a 4.5 times tighter turn radius compared to high-speed rail and can climb grades that are 6 times steeper, reducing the disturbance at crossings. Portals will be purposely integrated into and support existing communities and landscapes. Low noise levels will expand opportunities to build hyperloops closer to the city center.

  • Q. With the focus on connecting cities, how will hyperloop support rural communities?

    Hyperloop also holds enormous promise for rural communities. Virgin Hyperloop systems can be built below or above ground, which means no one’s farm needs to be cut in half. Our system enables rural areas to retain residents, who can now have more access to urban job centers, educational opportunities, and health care facilities. Additionally, hyperloop could enable freight distribution centers to be placed in rural areas, leading to job growth and industrial clusters. After a system is built, there is the opportunity to add additional on and off-ramps, supporting a greater number of people along the route.

  • Q. How will hyperloop projects be financed?

    Transportation infrastructure has traditionally relied on extensive government funding. This is because the benefits of clean, safe, and efficient transportation are enjoyed by the entire community, not just the user buying a ticket. However, most existing mass transportation modes are unprofitable and hindered by existing infrastructure built in the past century or by legacy systems. We want to change that and are focused on public-private partnerships. By developing a new mode of transportation from scratch, we're able to leverage technological developments that have occurred in the last century, especially the IT revolution. We're able to keep maintenance costs low, energy efficiency high, and transport tens of thousands of passengers per hour. This keeps margins and accessibility high, contributing to more financially attractive returns than if the corridor was served by existing modes. These benefits aren’t just hypothetical. While this is an exceptional case due to high demand, a third-party evaluation found that our Mumbai-Pune Hyperloop Project could be funded 100% by private capital. In the U.S. we see enormous potential to attract investment from the private sector, leveraging public investments. Involving government stakeholders as well as potential private investors early in the project development process is critical.

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