| 摘要 |
A water sports device for supporting a seated human rider while the rider and the device are towed behind a powered water craft, the device including an elongated board having a front end and a back end to which is secured a seat for supporting the buttocks of the rider in a position spaced from and roughly centered above the back one-third of the board, a holder for securing the feet of the rider over the top of the board secured to the board spaced at least about two feet toward the front end of the board from the seat. An elongated hydrofoil extends downward from the board and front and rear planing blades carried by an arm which is generally parallel to the board. The arm is secured to the hydrofoil and spaced from the board, so that the blades are generally parallel to the board. The planing blades provide essentially no lift when the board is horizontal, The improvement resides in the front planing blade being carried lower on the arm than the rear planing blade such that the flow of water over the front planing blade produces less turbulence over the rear planing blade. In a water sports device for supporting a standing human rider while the rider and the device are towed behind a powered water craft, the device including an elongated board having a front end and a back end, an elongated hydrofoil extends downward from the board, front and rear planing blades carried by an arm which is generally parallel to the board, said arm being secured to the hydrofoil and spaced from the board, so that the blades are generally parallel to the board, the planing blades provide essentially no lift when the board is horizontal, the improvement wherein the front planing blade is carried lower on said arm than the rear planing blade such that the flow of water over the front planing blade produces less turbulence over the rear planing blade.
|
