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Hyperloop pod competition

The Hyperloop Pod Competition is a competition sponsored by SpaceX in 2015–2018 where a number of student and non-student teams are participating to design—and for some, build—a subscale prototype transport vehicle to demonstrate technical feasibility of various aspects of the Hyperloop concept. The competitions have been open to participants globally, although all competitions and judging has occurred in the United States.

For the 2017 competition, a Bloomberg journalist reported that entrants were required to hand over rights for SpaceX to use any of their technology in the future without compensation,[1] but no requirement to this effect is found in the competition rules.[2][3]

A fourth year of competition has been announced for summer 2019.[4]

Overview

There were three judging phases in the 2015–2017 competition: a design competition that was held in January 2016, and two on-track competitions—27–29 January 2017,[5][6] and, Competition Weekend II, 25–27 August 2017.[7] The on-track portion of the competition is run on the SpaceX Hyperloop test track—or Hypertube—a mile-long, partial-vacuum, 1.83-meter (72.0 in)-diameter steel tube purpose-built in Hawthorne, California for the competition.[8]

30 of the 115 teams that submitted designs in January 2016 were selected to build hardware to compete on a sponsored Hyperloop test track in January 2017.[9][10] There were more than 1,000 applicants at earlier stages of the competition.[11] The first competition completed in January 2017. Delft Hyperloop from the Technical University of Delft won the first overall prize. WARR Hyperloop, from the Technical University of Munich won top honors. In April 2017, 24 teams were selected to compete in Competition Weekend II held in August; WARR Hyperloop won top honors with a 323 kilometres per hour (201 mph) top speed in the mile-long test track.[7]

In August 2018, 18 teams competed in the main competition with top speed as the only judged criteria; two additional teams competed in the levitation sub-competition. WARR Hyperloop again won to honors in the main competition, beating its own record with a 467 km/h (290 mph) run; UCSB Hyperloop was the only team to be able to compete in the levitation sub-competition, thus automatically winning. [12]

It was announced during Competition III that Competition IV was confirmed to take place in summer 2019.

History

The outline of the original Hyperloop concept was made public in August 2013 by the release of a preliminary—or alpha level—design document by Elon Musk, with substantial design assistance from an informal group of engineers at both Tesla Motors and SpaceX who worked on the conceptual foundation and modelling of Hyperloop. The preliminary design called for a 2.3–3.4-meter-diameter (90–132 in) steel tube, operating in partial vacuum (nearly airless), utilizing pressurized vehicle "pods" to carry passengers or cargo that would ride on an air cushion driven by linear induction motors and air compressors.[13] The alpha design included a notional route running from the Los Angeles region to the San Francisco Bay Area, paralleling the Interstate 5 corridor for most of its length, so that preliminary economic analysis might be done on the concept.[14] Responses to the design paper release included: "a flash of brilliance" and "hypercool"[15] to "nothing new here"[13] to "hype", "another science-fiction dream," and "completely impractical."[16]

Within days of the 2013 announcement, discussions concluded that building a successful Hyperloop subscale demonstration project could reduce the political impediments while improving cost estimates; Musk suggested that he could choose to become personally involved in building a demonstration prototype of the Hyperloop concept, including funding the development effort.[17][18]

On 15 June 2015, SpaceX announced that they would sponsor a Hyperloop pod design competition, and would build a 1-mile-long (1.6 km) subscale test track near SpaceX's headquarters in Hawthorne, California, for the competitive event. The competition could be held as early as June 2016.[19][20] SpaceX stated in their announcement, "Neither SpaceX nor Elon Musk is affiliated with any Hyperloop companies. While we are not developing a commercial Hyperloop ourselves, we are interested in helping to accelerate development of a functional Hyperloop prototype."[21] More than 700 teams had submitted preliminary applications by July.[22]

Detailed competition rules were released for the first competition in August 2015, with revisions in October.[23] Formal Intent to Compete submissions were due 15 September 2015 with SpaceX intending to release the detailed tube and technical specification by October 2015[24] but became available somewhat later.[8] A preliminary design briefing was held in November 2015,[25] and as of October 2015, Final Design Packages were due on 13 January 2016. A Design Weekend was held at Texas A&M University on 29–30 January 2016 for all invited entrants. The selected pods will compete at the SpaceX Hyperloop Test Track in January 2017.[24]

More than 120 student engineering teams were selected from the preliminary design briefing presentations in November to submit final design packages in January 2016. The designs were released to public view prior to the end of January 2016, and selected teams were invited to build hardware and compete in time trials, planned for mid-2016 at the time.[25]

SpaceX announced in January 2016 that they had engaged a Los Angeles-based, Fortune-500, engineering design and construction firm AECOM to build the Hyperloop test track.[26]

At a 29–30 January 2016 meeting at Texas A&M University, hosted by the College of Engineering, the designs from the approximately 120 worldwide teams were reviewed and judged. 30 teams were selected to go forward and build prototype Hyperloop pods for the competition later in the year.[9][10]

On 30 January 2016, Musk announced that, due to the level of sophistication of the pod designs as well as design issues with economical design approaches to building the test track, "given this level of enthusiasm, there is no question we are going to have another Hyperloop competition."[27] Further information came in August 2016: the team sign-up deadline would be 30 September 2016 to compete in the second pod competition sometime in 2017.[28]

In the event, the mid-2016 competition schedule was delayed to January 2017. TechCrunch published a photograph of the pod competition test track still under construction in September 2016.[29] Competition teams visited the track for fit checks and vacuum/track tests during the first week of November, and a video was released.[6]

The on-track portion of the competition finally got underway on 27 January 2017.[5]. WARR Hyperloop, from the Technical University of Munich won top honors.

In April 2017, 24 teams were selected to compete in Competition Weekend II. Held in August 2017, WARR Hyperloop won top honors once again, this time with a 323 kilometres per hour (201 mph) top speed in the mile-long test track.[7]

In September 2017, SpaceX announced that they would sponsor another competition in the third quarter of 2018.[30] As with the Competition Weekend II in 2017, only student teams may enter the competition, and the "competition will be judged solely on one criteria: maximum speed with successful deceleration (i.e. without crashing)."[31] Unlike the two test track competitions in 2017 however, all pods must be self-propelled. SpaceX will not provide an external pusher-vehicle as they did provide to facilitate student team pod testing in both the January and August 2017 competitions. Ultra-small pods will not be allowed this time, with minimum pod length set at 1.5 metres (5 ft). There will be an additional sub-competition with up to three qualifying teams allowed to take part in a Levitation Sub-Competition that will require non-wheeled pod levitation and will be tested on an external (non-vacuum) test track. The pods will need to translate at least 75 feet (23 m) down the track, stop, reverse, and translate back to the original position, all while levitating the entire duration. Fastest full cycle wins the levitation sub-competition.[31] The 2018 competition will take place 22 July 2018.[32]

As of 2018, Steve Davis—who joined SpaceX as employee no. 9 in 2003,[33]: 43:40  and is current project leader for The Boring Company—has been the operations manager for the Hyperloop Pod Competition since inception.[33]: 26:50 

Technical overview

Each competition has taken place on a 1-kilometre-long (0.62 mi), 1.8-meter-diameter (6 ft) test track built in southern California.[19][26] Test pods may not carry any human or animal, and are to be used solely to develop new technologies and subsystems for effecting higher-velocity tube transport systems.[34] The track will facilitate pod test runs where each pod is accelerated, achieves a top measured speed that is reported in real-time, and then decelerates by braking, ostensibly before the end of the test track. There will be a crash pit after the end of the track to absorb the energy of any test pods that fail to come to a stop in the test track tube.[11][27]

Test track

The SpaceX Hyperloop test track — or Hypertube[8] — was designed in 2015 and was constructed in 2016, reaching its full length of one mile by October 2016.[35] The test track itself is also a prototype, where SpaceX anticipates learning from the design, build process and evaluates how to apply automated construction techniques to future Hyperloop tracks.[27]

Cross section of the Hypertube test track used in the Hyperloop pod competitions.

The design of the pod test track varies significantly from the Hyperloop tube design shown in the initial alpha-level Hyperloop design concept document released in 2013.[14] The Hypertube test track is designed to enable competitors who implement a wide array of designs and build pods that will test a variety of subsystem technologies that are important to new vehicle transport systems. This will include Hyperloop-specific pods—with air-bearing suspension and low-pressure compressor designs—as well as wheeled vehicle and magnetic levitation rail designs that will support a wide array of vehicle technologies to be tested. Some pods are expected to test only particular subsystems rather than a full Hyperloop-capable pod vehicle design; as well, many pods will have no on-pod compressor to prevent the high-speed choked-flow problem, very unlike the Hyperloop alpha design.[8]

Multiple systems will be allowed for propulsion and for levitation/suspension of various team pods. Three explicit suspension types are called out: wheels, air bearings, and magnetic levitation. Pod propulsion may be On-pod—as envisioned in the alpha Hyperloop design—or for the Hypertube test track, may use a SpaceX-provided Pusher to accelerate pods up to speed in the first 15 percent of track length, or even be unique (team-specific) Off-pod propulsion systems that would need to be integrated into the Hypertube for that Pod's specific test run.[8]

Specifications

The test track specifications as of January 2016 include:[8]

  • Outer diameter: 1.83 meters (72.0 in)[8] (vs. approximately 2.3–3.4 m (90–132 in) for the tube in the initial alpha Hyperloop design document)[14]
  • Inner diameter: 1.79 meters (70.6 in)
  • Wall thickness: 18 millimeters (0.70 in)[8] (vs. 20–25 mm (0.80–1.0 in) for the tube in the initial alpha Hyperloop design)[14]
  • Length: 1.6 kilometers (1 mi) (approximate)
  • Materials
  • Subtrack thickness: 25 millimeters (1.0 in) for first and last 61 meters (200 ft); 13 millimeters (0.5 in) for remainder of tube
  • Internal pressure: 0.14–100 kilopascals (0.02–14.7 psi) (competitors may select tube operating pressure "in order to support various types of propulsion systems, compressors (if applicable), and outer mold lines"
  • Pumpdown time is expected to be as long as 30 minutes to reach the minimum pressure rating.
  • Thermal control system: none provided in the Hypertube. Tube temperature is expected to vary based on time of day and weather, and competitors will need to design their pods accordingly, mitigating thermal hotspots during pumpdown and test runs.
  • Braking system: the only Hypertube-provided braking is the emergency foam pit at the end of the mile-long tube. Pods are expected to provide their own pod-specific braking system, one that will react force to the Hypertube by one of four methods: either against the steel tube, or concrete base, or aluminum subtrack, or central rail. Tube requirements limit friction braking against the subtrack or rail to specified limits.
  • Power: none provided on the test track during testing; 240VAC/50A and 120VAC/15A power provided in the pod waiting area up through the pre-launch phase within the tube
  • Communications: SpaceX will provide a standard Network Access Panel (NAP) device (approximately 250 mm × 200 mm × 38 mm (10 in × 8 in × 1.5 in)) for mounting on each pod which will communicate to the in-tube network via two, redundant, 1–25 GHz, wave blade antennas. The NAP will also record temperature, acceleration, vibration and shock of each pod in real time during each test run.
  • Navigation aids: The tube will include a series of circumferential reflective stripes applied to the inner circumference of the tube, located on the top of the tube, to be used for optical pod navigation, and in particular, awareness of the last 300 meters (1,000 ft) of the tube so pod braking may be safely effected.

Vehicle pods

Three variations of exterior design are currently being explored for vehicle pods. One pod design uses air bearings; this design relies on a system to create a bed of air for the pod to glide upon and is the basis of Elon Musk’s original Hyperloop idea.[14] Another pod design uses magnetic levitation; this design was used by the winner of the “Best Overall Design Award” MIT.[37] The third design uses high speed wheels for speeds under 100 mph and air bearings for higher speeds.[38][39] This design was used by University of Colorado, Denver's Hyperlynx team.

The inside design of the pods vary by team. Some of the teams are solely building pods designed for cargo transport. Other teams designed pods to transport passengers, while other designs would allow adjustments to be made to the pod to allow both, while MIT's team's initial design did not have room for a passenger or cargo and solely relied on the engineering of the pod.[40] The University of Colorado, Denver's team incorporated a removable capsule that allows it to be exchanged for a cargo hold or passenger space.[38][39] New York University's team has created a vehicle that only allows cargo transportation.[41]

Competition I (January 2016 and January 2017)

Competing teams

Teams advancing to the prototype hardware build stage for 2016 include representatives from four continents and at least six countries. The selected teams include:

Phase 1: Design weekend (January 2016)

Five design awards were assigned following the January design weekend.[9]

MIT Hyperloop Team's design was awarded received the "Best Overall Design Award",[9] among the 23 designs selected to move to the prototype stage. The design proposes a 250 kg (551 lb) pod with a carbon fiber and polycarbonate sheet exterior. It is elevated by a passive magnetic levitation system comprising 20 neodymium magnets that will maintain a 15 mm (0.6 in) distance above the track.[37] The team says with air pressure at 140 Pascals, the pod could accelerate at 2.4 G and have 2 Newton aerodynamic drag when traveling at 110 m/s. The design includes a fail-safe braking system that automatically halts the pod should the actuators or computers fail, and low speed emergency drive wheels that can move the pod 1 m/s.[37]

Delft Hyperloop received a "Pod Innovation Award",[9] while Badgerloop, Hyperloop at Virginia Tech, and HyperXite at UC Irvine each received a "Pod Technical Excellence Award". One award for "Best Non-Student Team" was awarded to rLoop, a team which formed on the SpaceX subreddit.[9]

In addition to the five pod awards above, nine subsystem awards and three "design only" awards were given to teams, most to teams that were not chosen to continue on to the on-track competition. Technical awards for outstanding technical merit in subsystem and design, based on "innovation and uniqueness of subsystem design, full Hyperloop system applicability and economics; level of design detail; strength of supporting analysis and tests; and quality of documentation and presentation." [91]

Best Overall Subsystem Award: Auburn University Hyperloop Team, Auburn University;[92][93] Safety Subsystem Technical Excellence Award: UWashington Hyperloop, University of Washington; Special Innovation Award in the Other Subsystem: RIT Imaging, Rochester Institute of Technology; :Levitation Subsystem Technical Excellence Award: TAMU Aerospace Hyperloop, Texas A&M; Braking Subsystem Technical Excellence Award: VicHyper, RMIT University; Propulsion/Compression Subsystem Technical Excellence Award: Makers UPV Team, Universitat Politècnica de València; Subsystem Technical Excellence Awards: Hyped,[94] University of Edinburgh; Conant Hyperloop Club, Conant High School;[95] Subsystem Innovation Award: Ryerson’s International Hyperloop Team, Ryerson University.[91] Top Design Concept Award: Makers UPV Team (see above); Design Concept Innovation Award: Nova Hyperloop Team, University of Cairo; Design Concept Innovation Award: Auburn University Hyperloop Team (see above).[91]

Phase 2: Test track runs (January 2017)

Phase 2 of the competition ran 27–29 January 2017[5][96][97][98][6] after previously being planned for as early as August 2016.[99] 27 teams competed in two overall categories and five subcategories. Each pod in the competition needed to progress through ten sequential tests, only the last of which would be a vacuum-environment speed run in the mile-long Hypertube. Problems with dust and misalignment of the track limited performance and caused widespread problems.[100] Just three of the competition pods successfully completed the nine tests that enabled them to make a vacuumized tube run on 29 January. The winning teams were:[101][102][103][104]

Overall
Subcategory awards

Competition II (August 2017)

The SpaceX "Hyperloop Pod Competition II" was held on 25–27 August 2017.[7] The rules for Competition II were released in August 2016. Unlike Competition I — where multiple judging criteria were used and multiple classes of vehicles and vehicle subsystems were judged — Competition II was judged by a single criterion: "maximum speed with successful deceleration (i.e. without crashing)."[2][105]

While approximately 24 teams competed, only the top three were selected to make test runs in the mile-long Hypertube test track. WARR Hyperloop won the competition with a test run clocked at 323 kilometres per hour (201 mph). Paradigm Hyperloop won second and Swissloop placed third.[7]

As of April 2017, 24 teams had been qualified to participate in the August 2017 competition.[106] It is unclear how many teams actually participated.

Competition III (July 2018)

The rules for Competition III were released in September 2017. One substantial change from Competition II was that "All Pods must be self-propelled. SpaceX [would] not provide an external Pusher" as they had on offer for teams during the first two pod competitions.[3]

Testing week

The competition began with the testing week prior to competition weekend where teams were required to pass a series of comprehensive safety tests in order to eligible for a run in the vacuum tube.

Several teams encountered difficulties during the week, including fried circuit boards and overheated batteries. However, six teams passed the final "open-air run" and were eligible for the final competition.[citation needed]

Three teams (Delft Hyperloop, WARR Hyperloop, and EPFLoop) were ultimately the only[why?] final competitors.[107]

Competition weekend

The final competition took place during the competition weekend on 22 July 2018. Each team demonstrated their respective pods while the "tube runs" took place for the final three competitors. Netherland's Delft Hyperloop was first to make an attempt with a top speed of 88 mph before stalling in the tube. Switzerland's EPFLoop was second, yet complications[clarification needed] led to a top speed of only 55 mph.[citation needed]

Germany's WARR Hyperloop were the defending champions, and beat their own record with a top speed of 290 mph during their run.[107][citation needed]

Three awards were later given out to WARR Hyperloop for their innovation in designing and building two pods; one for the main competition and the other for the levitation sub-competition. The other two awards went to the University of Washington Hyperloop team and Ireland's ÉirLoop.[107]

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