Skip to main content
×
×
Home

Progress towards an optically powered cryobot

  • W.C. Stone (a1), B. Hogan (a1), V. Siegel (a1), S. Lelievre (a1) and C. Flesher (a1)...
Abstract

VALKYRIE (Very-deep Autonomous Laser-powered Kilowatt-class Yo-yoing Robotic Ice Explorer) is a NASA-funded project to develop key technologies for an autonomous ice penetrator, or cryobot, capable of delivering science payloads through outer planet ice caps and terrestrial glaciers. This 4 year effort will produce a cylindrical cryobot prototype 280 cm in length and 25 cm in diameter. One novel element of VALKYRIE’s design is the use of a high-energy laser as the primary power source. 1070 nm laser light is transmitted at 5 kW from a surface-based laser and injected into a custom-designed optical waveguide that is spooled out from the descending cryobot. Light exits the downstream end of the fiber, travels through diverging optics, and strikes an anodized aluminum beam dump, which channels thermal power to hot-water jets that melt the descent hole. Some beam energy is converted to electricity via photovoltaic cells, for running on-board electronics and jet pumps. Since the vehicle can be sterilized prior to deployment, and forward contamination is minimized as the melt path refreezes behind the cryobot, expansions on VALKYRIE concepts may enable cleaner access to deep subglacial lakes. This paper focuses on laser delivery and beam dump thermal design.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Progress towards an optically powered cryobot
      Available formats
      ×
      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Progress towards an optically powered cryobot
      Available formats
      ×
      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Progress towards an optically powered cryobot
      Available formats
      ×
Copyright
References
Hide All
Boechat, AAP, Su, D, Hall, DR and Jones, JD (1991) Bend loss in large core multimode optical fiber beam delivery systems. Appl. Opt., 30(3), 321327 (doi: 10.1364/AO.30.000321)
Engelhardt, H, Kamb, B and Bolsey, R (2000) A hot-water ice-coring drill. J. Glaciol., 46(153), 341345 (doi: 10.3189/ 172756500781832873)
Farrow, RL, Kliner, DAV, Hadley, GR and Smith, AV (2006) Peak-power limits on fiber amplifiers imposed by self-focusing. Opt. Lett., 31(23), 34233425 (doi: 10.1364/OL.31.003423)
Ghatak, AK and Thyagarajan, K (1998) Introduction to fiber optics. Cambridge University Press, Cambridge
Gulati, S and 8 others (2010) Toward autonomous scientific exploration of ice-covered lakes – field experiments with the ENDURANCE AUV in an Antarctic dry valley. In Proceedings of 2010 IEEE Conference on Robotics and Automation (ICRA), 3–7 May 2010, Anchorage, Alaska, USA. Institute of Electrical and Electronics Engineers, Piscataway, NJ, 308315
Philberth, K (1962) Une méthode pour mesurer les températures à l’intérieur d'un Inlandsis. C. R. Séances Acad. Sci. (Paris), 254(22), 38813883
Stone, W, Fairfield, N and Kantor, GA (2007) Masterclass in AUV technology for polar science: collaborative Autosub science in extreme environments. In Proceedings of the International Masterclass, 28–30 March 2006, Southampton, UK. National Oceanography Centre, Southampton
Stone, W and 11 others (2010) Design and deployment of a four-degrees-of-freedom hovering autonomous underwater vehicle for sub-ice exploration and mapping. J. Eng. Marit. Environ. 224(4), 341361 (doi: 10.1243/14750902JEME214)
Zimmerman, W, Bonitz, R and Feldman, J (2001) Cryobot: an ice-penetrating robotic vehicle for Mars and Europa. In Proceedings of the 2001 IEEE Aerospace Conference, 8–15 March 2001, Big Sky, MT, USA. Institute of Electrical and Electronics Engineers, Big Sky, MT. CD-ROM
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Annals of Glaciology
  • ISSN: 0260-3055
  • EISSN: 1727-5644
  • URL: /core/journals/annals-of-glaciology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 80
Total number of PDF views: 147 *
Loading metrics...

Abstract views

Total abstract views: 100 *
Loading metrics...

* Views captured on Cambridge Core between 26th July 2017 - 26th September 2018. This data will be updated every 24 hours.