pilot

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About pilot

  • Rank
    Anarchist

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  • Location
    Tallinn
  • Interests
    Sailing, gliding

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  1. pilot

    New Hugo Boss Spotted

    The last generation IMOCAs are a lot more unstable without keel than previous generations were. At least HB and Charal that share the same hull design. This is because foils start to work so early that it is wise to optimize the hull to have less wet surface in displacement mode. This means hulls are narrower and more round. This is pointed out in this video as well:
  2. pilot

    New Hugo Boss Spotted

    A new virtual tour is added into hub: https://www.alexthomsonracing.com/the-hub/internal-360-tour/
  3. pilot

    New Hugo Boss Spotted

    These pictures and a lot more is available here: https://www.alexthomsonracing.com/the-hub/gallery/
  4. pilot

    New Hugo Boss Spotted

    Yes, I mean what he is wearing on top of the sunglasses. Garmin does not seem to be among official suppliers. So it must be a useful kit - he does not war it just for advertisement.
  5. pilot

    New Hugo Boss Spotted

    I have no clue on what this claim is based on but I do hope so as well. At least Alex has confirmed that he'll be ready for TJV. So he either was mapping polars for such a case or he had spare foil waiting for it to happen. Another article is coming. Can anyone tell is Alex wearing a set of Garmin Nautix In-view Display in this teaser picture:
  6. pilot

    Why so nose up on foils - IMOCA

    I understand that there is a limit longitudinally by the rules, but i meant further out from the center line. The beam is nowhere close to the limit in case of new foilers. I see that rudders can be easily developed into something else like daggerboards were developed into foils. The vertical position of the rudder is not guaranteed anyway and they acting a bit like a stabilizer. The force it crates has a yaw component and a vertical component, like with T rudders. The attack-angle of the hull dictates how much average lift is generated. The pulling force of sails generates a yaw moment that forces the autopilot to turn downwind and this also makes the rudder to generate more lift. The angle of attack will depend a lot of the needed yaw moment but this can be corrected by changing foils angle of attack. It would be much easier to sustain flying if the rudder fin would be placed outside of hull and pointing more inside. The closer to the center line the more of it comes out of water during liftoff by the help of heeling.
  7. pilot

    New Hugo Boss Spotted

    This is more like long term measure that you cannot count on in case of sudden dynamic load. And at least with the broken foil you can limp to home. What they probably had to do today.
  8. pilot

    New Hugo Boss Spotted

    The best fuse is the foil itself. Probably they calculate the braking load to be just under the rig RM limit. You can sail with missing foil but not without the rig.
  9. pilot

    New Hugo Boss Spotted

    It looks like they broke the starboard foil. A stump looks to be still there but the rest of it is nowhere seen: Source - Plymouth Yacht Haven
  10. pilot

    Why so nose up on foils - IMOCA

    In what perspective yaw? Horizontally or in yacht perspective? Even if both rudders were vertical in yacht perspective they are affecting both yaw and pitch when heeled. Edit: And I think if rudders are canted inside (like V shape) you don't need to control both with autopilot. Only the windward one that is more vertical to control the yaw. Leeward rudder can be fixed instead of puled out and it is still stabilizing the boat and lifting the stern depending of the fixed angle. The vertical windward rudder is balancing out what ever yawing forces the leeward one is generating... I am curious, can rudders be placed outside of hull dimensions by rules?
  11. pilot

    New Hugo Boss Spotted

    I see it this way that for speed they need to induce greater heel angle. By heeling they can shift the center of sail pilling force over the center of resistance mainly generated by foil and the more it heels the less by keel. And actually the more it heels the more it creates turning force toward wind (sail force is more away than the center of resistance). To compensate this the rudder must turn also toward wind and in doing that it raises the stern. The more it heels the more has the rudder useful angle for lift. This explains also why the rudders have paced more vertical than it would be optimum according to the hull surface. So, we can see them flying if they manage to find the point of balance. I am not surprised if this requires some negative keel angle. And because everything has to be balanced by one surface it is highly unstable. While the stern is rising the angle of foils needs to be changed and this is not automated.
  12. pilot

    New Hugo Boss Spotted

    You can see all the telltales from the cockpit through the windows. Cameras are more like for keeping eye on from the bed. Or during the night because I don't see any integrated light on deck.
  13. pilot

    New Hugo Boss Spotted

    Understood. The only benefit now is to place it into more exotic place than the propeller shaft allows. Which turns out is practically the same where the engine was located.
  14. pilot

    New Hugo Boss Spotted

    So, if you have Watt and Sea hydro-generator, you are not allowed to take it off from transom? I remember that previous gen HB had Watt and Sea stored just in case but they never used it.