A space elevator is a theoretical system using a super-strong ribbon going from the surface of the Earth to a point beyond Geosynchronous orbit. The center of gravity of the ribbon would be exactly in geosynchronous orbit, so that the ribbon would always stay above the anchor point. Vehicles would climb the ribbon powered by a beam of energy projected from the surface of the Earth. Building a space elevator requires materials and techniques that do not currently exist. A variety of Space Elevator competitions have been held in order to stimulate the development of such materials and techniques.

Space elevators were first conceived in 1895, but until the discovery of carbon nanotubes, no technology was envisioned that could make them possible. Building an actual elevator is still out of reach, but the directions for research are clear. This makes the area ripe for incentive prizes like the X Prize, and prizes and competitions have been set up since 2005[1] to encourage the development of relevant technologies. There are two main areas of research remaining, and these are where the competitions focus: building cables ("a Tether challenge"), and climbing and descending cables ("a Power Beam challenge").

In a Power Beam Challenge, each team designs and builds a climber (a machine capable of traveling up and down a tether ribbon). In a Tether challenge, each team attempts to build the longest and strongest cable. In the Power Beam challenge climber carry a payload. Power is beamed from a transmitter to a receiver on the climber. With each competition, the tethers reach higher altitudes, and the climbers are expected to climb further. Each competition can have minimum lengths and maximum weight per meter for cables, and minimum speed and distance goals for climbers.

Space elevator challenge results

Like many competitions modeled after the X prize, competitors have to meet a minimum baseline, and then prizes are awarded to the best entry that exceed that target. In 2005, there was only a climbing challenge, and none of the entrants met the minimum speed requirement of 1 m/s. Starting in 2006, Elevator:2010, sponsored by spaceward.org[2] and NASA conducted a series of competitions. For 2006, the prize was increased, and the speed requirement dropped slightly to 50 meters in under a minute. 13 teams entered, and one was able to climb the 50 meters in 58 seconds. In 2009 at Edwards Air Force Base, the challenge was climbing a 900 m tether, and one entry managed the feat several times, with a top speed of 3.5 m/s. NASA didn't renew their sponsorship after 2009,[3][4] pending "further advancements in material science".

The International Space Elevator Consortium was formed in 2008,[5] and has held annual conferences. They announced a $10,000 Strong Tether Challenge competition for 2013. The Challenge was canceled for lack of competitors.[6] The 2011, 2012, and 2013 ISEC conferences also featured FIRST-style High School robotics competitions for climbers.[7][8] and occasional competitions.

The Japan Space Elevator Association held a climbing competition in August 2013.[9] Hot air balloons were used to hoist a tether, and Team Okusawa's entry[10] succeeded in climbing to 1100 meters,[11] and a team from Nihon University reached 1200 meters. (The sources are in Japanese.)

The Japan Space Elevator Association held a climbing competition in August 2014.[12] Hot air balloons were used to hoist both rope (11 mm) and ribbon (35 mm x 2 mm) to 200 m and 1200 m. Team Okusawa climbed to 1200 m and descended twice. Kanagawa University carried a 100 kg payload to 123 m on the 200 m ribbon. Kanagawa University's three teams climbed respectively to 1200 m (rope), 1150 m (rope) and 1100 m (ribbon). Munich University of Technology reached 1000 m (rope).

CompetitionTypePrizeTargetDateLocationEntriesWinner?RecordsComments
X Prize Cup[13]ClimberAug 2005NASA AMES, Mtn Vw, CA, USAno
TetherAug 2005NASA AMES, Mtn Vw, CA, USAnoCentaurus: 1300 Lbs (2 gr, 2 m)
2nd Annual X Prize Cup[14] Climber$200K50 m, 1 m/s (climb + descend)Oct 2006Las Cruces, NM, USA6 (USST, LiteWon, TurboCrawler, Climber 1, KC Space Pirates, Snowstar)noUSST: 1 m/s climbing10 cm ribbon, searchlights for power
Lander ???take off, hover, landOct 2006Las Cruces, NM, USAnoneno
Tether$200KMax Strength (min len 2 m, max wt 2 g)Oct 2006Las Cruces, NM, USA4 (UBC, Astroaraneae, Centaurus Aerospace, Bryan Laubscher)noAstroaraneae: 1335 Lbs (2 gr, 2m)
Space Elevator Games[15]Climber$500K100 m, 2 m/sOct 2007Salt Lake City, UT, USA(USST, KC Space Pirates, LaserMotive)noUSST: First laser powered climb; 1.8 m/s climbingFirst lasers for power
Tether$500KOct 2007Salt Lake City, UT, USAAstroaraneae, Delta x (MIT)noAstroaraneae: ???
2009 Space Elevator Challenge[16] Climber$1.1M 5 m/s $.9M 2 m/s900 m, 5 m/s or 2 m/sOct 2009NASA Dryden FRC, Edwards Air Force Base, California, U.S.6 (USST, KC Space Pirates, LaserMotive, Umich, McGill, NSS)yesLaserMotive won 900K for their climber, which reached speeds of 3.6 m/s[17]
Tether$2 MOct 2009NASA Dryden FRC, Edwards Air Force Base, California, U.S.noFirst carbon nanotube
JSETEC 2010[18][19]Climber300 mAug 2010Mt. Fuji, Shizuoka-ken, Japan15 teams (USST, Kanagawa U., Nihon U., Shizuoka U.)[20]yesKanagawa University was top finisher; USST reached 18.3 m/s (battery-powered) before crashing
2011 Strong Tether Centennial Challenge[21] Tether5 MYuris12 August 2011Redmond, WA, USAno
JSETEC 2011ClimberAug 2011Mt. Fuji, Shizuoka-ken, Japan16530 m in 39 s, 450 m in 27 s
EUSPEC 2011[22]Climber25 mAug 2011TU Munich, Germany6yesEfficiency: 43.85%Either rope or belt tethers
JSETEC 2012Climber1200 mAug 2012Mt. Fuji, Shizuoka-ken, Japan16noNo one climbed 1200 mEither rope or belt tethers
EUSPEC 2012Climber50 mOct 2012TU Munich, Germany6yesEither rope or belt tethers
JSEA 2013Climber1200 mAug 2013Mt. Fuji, Shizuoka-ken, JapanOkusawa,[23] Nihon U1200 m
TechnoBrain 2014Climber10,000 NIS25 mJune 2014Technion, IsraelIshai Zimerman and Ronen Atzil[24]yesYuri Artsutanov, who developed the concept of the "space elevator", was the guest of honor and one of the judges of the competition
SPEC 2014Climber1200 m and 200 mAugust 2014JapanTeam Keio & Manten Project, Team Okuzawa, Kanagawa University Egami Ken, Technical University Munich[25]noTeam Okusawa climbed two round trips to 1200 m ; Kanagawa University climbed 123 m on the 200 m rope with a 100 kg payloadBoth rope (11 mm) and ribbons (35 mm x 2 mm) were available at each altitude, held aloft by balloons.
EUSPEC 2016Climber100 m and 50 mSeptember 2016GermanyAoki Lab (Nihon University); Last.minute (TUM); Space Group Hof (Schiller Gymnasium); Meier's Eleven (Gutenbergschule Wiesbaden); [26]Both rope (10 mm) and belt (30-40 mm x 2 mm) were available, held aloft by balloons.
BASPEC 2019Climber20 mSeptember 2019Germany, Hof a.d. SaaleChip-Chap; Insert Name; Schiller-Space Blocks; SGH-Space Team; Sky Runner; Viersteinyes

References

  1. ↑ "Space Elevator Competitions". International Space Elevator Competition. Archived from the original on 11 October 2013. Retrieved 25 August 2013.
  2. ↑ "The Space Elevator Challenge". The Spaceward Foundation. Archived from the original on 6 June 2014. Retrieved 25 August 2013.
  3. ↑ "NASA, the Space Elevator Challenges and the Kansas City Space Pirates". SpaceElevatorBlog. Retrieved 25 August 2013.
  4. ↑ "Strong Tether Challenge". Archived from the original on 12 September 2010. Retrieved 25 August 2013.
  5. ↑ "Leading Players in the Space Elevator Movement Join Together to Form New International Consortium" (PDF). Archived from the original (PDF) on 2 May 2016. Retrieved 25 August 2013.
  6. ↑ "ISEC Space Elevator Conference".
  7. ↑ "2013 Space Elevator Conference". International Space Elevator Consortium. Retrieved 25 August 2013.
  8. ↑ "2013 Space Elevator Conference – Day 2". Space Elevator Blog. Retrieved 25 August 2013.
  9. ↑ "On the implementation results of the SPEC2013". Japan Space Elevator Association. Archived from the original on 17 October 2014. Retrieved 25 August 2013.
  10. ↑ "Orbital elevator group". Retrieved 25 August 2013.
  11. ↑ "Team Okusawa 1,100 m elevation climber video". Japan Space Elevator Association. Archived from the original on 17 October 2014. Retrieved 25 August 2013.
  12. ↑ "On the implementation results of the SPEC2014". Japan Space Elevator Association. Archived from the original on 26 August 2014. Retrieved 25 November 2014.
  13. ↑ "2005 Power Beaming Archive". Archived from the original on 4 October 2013. Retrieved 25 August 2013.
  14. ↑ "Space Elevator Challenge Results". Retrieved 25 August 2013.
  15. ↑ "2007 Power Beaming Archive". Archived from the original on 4 October 2013. Retrieved 25 August 2013.
  16. ↑ "2009 Power Beaming Archive". Archived from the original on 15 November 2013. Retrieved 25 August 2013.
  17. ↑ "LaserMotive finally wins NASA's Elevator:2010 Beam Power Challenge, climbs at 3.9 meters/second (video)". engadget.com. Retrieved 14 September 2013.
  18. ↑ "Results from Japan's 2010 JSETEC Competition". Space Elevator Blog. Retrieved 14 September 2013.
  19. ↑ "2010-08-12-JSETECH2010" (PDF). JSEA. Retrieved 14 September 2013.
  20. ↑ "Japan holds space elevator competition". Telegraph UK. Archived from the original on 12 August 2010. Retrieved 14 September 2013.
  21. ↑ "Strong Tether Challenge". Retrieved 25 August 2013.
  22. ↑ "EuroSpaceward announces EuSEC – the first European Space Elevator Challenge!". The Space Elevator Blog. Retrieved 27 November 2013.
  23. ↑ "Team Okusawa 1100 m elevation climber video". JSEA. Archived from the original on 17 October 2014. Retrieved 14 September 2013.
  24. ↑ "Technobrain 2014: Screwdriver Power". Technion. 22 June 2014. Retrieved 25 November 2014.
  25. ↑ "SPEC 2014 results bulletin". JSEA. Archived from the original on 26 August 2014. Retrieved 23 August 2014.
  26. ↑ "Participating Teams". Archived from the original on 3 January 2017. Retrieved 2 January 2017.
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