Fuck Yeah Fluid Dynamics

Celebrating the physics of all that flows. Ask a question, submit a post idea or send an email. You can also follow FYFD on Twitter and Google+. FYFD is written by Nicole Sharp, PhD.

Recent Tweets @

The forces on an object in flight come from the distribution of pressure on the surface. To alter an object’s trajectory, one has to shift the pressure distribution. On subsonic and transonic aircraft, this is usually done with control surfaces like an aileron, but at supersonic speeds this can require a lot of force. The schlieren images above show an alternative approach in which a plasma actuator near the nosetip generates asymmetric forces on the cone. The actuator discharges plasma at t=0, and flow is from left to right. In the first image, the bubble of plasma is expanding on the upper side of the cone, disrupting the nearby shock wave. Over time, it moves downstream, carrying its disruption with it. The asymmetric effect of the plasma causes uneven pressures on either side of the cone that can be triggered in order to turn it in flight.  (Photo credit: P. Gnemmi and C. Rey)

  1. 3ambox reblogged this from fuckyeahfluiddynamics
  2. mc-reg reblogged this from fuckyeahfluiddynamics
  3. sirwilliamii reblogged this from fuckyeahfluiddynamics
  4. fennetic reblogged this from fuckyeahfluiddynamics and added:
    coming soon to a theater of war near you! seriously though, that could be a solid state smart bullet or kinetic...
  5. ev-the-waepenwif reblogged this from fuckyeahfluiddynamics
  6. zaledin reblogged this from fuckyeahfluiddynamics
  7. truthinengineering reblogged this from mekapaedia
  8. mekapaedia reblogged this from fuckyeahfluiddynamics
  9. carelesslycareful reblogged this from fuckyeahfluiddynamics
  10. al33n51 reblogged this from fuckyeahfluiddynamics and added:
    SO COOL :D
  11. mosilion reblogged this from fuckyeahfluiddynamics
  12. parametricworld reblogged this from fuckyeahfluiddynamics
  13. ixoyelee reblogged this from fuckyeahfluiddynamics
  14. hrothgar22 reblogged this from fuckyeahfluiddynamics
  15. losttimecannotbefound reblogged this from bythetaillights
  16. bythetaillights reblogged this from fuckyeahfluiddynamics
  17. livinginchaosbeauty reblogged this from somuchscience
  18. candid-yams reblogged this from fuckyeahfluiddynamics
  19. somuchscience reblogged this from fuckyeahfluiddynamics
  20. flamshed reblogged this from fuckyeahfluiddynamics
  21. sophrosynic reblogged this from fuckyeahfluiddynamics
  22. johnstark3 reblogged this from fuckyeahfluiddynamics
  23. eloace reblogged this from fuckyeahfluiddynamics
  24. mudshark58 reblogged this from fuckyeahfluiddynamics
  25. nfornihilism reblogged this from fuckyeahfluiddynamics
  26. skcirthinquememen reblogged this from fuckyeahfluiddynamics
  27. kiyoshisaito reblogged this from fuckyeahfluiddynamics
  28. opportunechicanery reblogged this from fuckyeahfluiddynamics