• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A racing eight according to the invention as a men's eight has an elongated hull which ends in a pointed bow and in a pointed stern. The waterline is 17211 mm with a total weight of 938 kg. When divided into 15 segments of equal length, the following values are also available in the case of a total weight of 938 kg: A racing eight according to the invention as a women’s eight is designed with similar lines for a total weight of 858 kg.
    公开号:CH717643A2
    申请号:CH00459/21
    申请日:2021-04-28
    公开日:2022-01-31
    发明作者:Empacher Helmut
    申请人:Empacher Verwaltungs Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a racing eight with an elongated hull, which ends in a pointed bow and in a pointed stern.
    A men's eight developed by the applicant and used very successfully since 1996 is known in the art under the designation R86. With a total weight of 938kg, it has the following data: The waterline is 17131mm and when divided into 15 segments of equal length, the respective cross-sectional area is below the waterline, the respective circumference is below the waterline, the respective width at the waterline and the respective width ratio based on the middle segment 7 the values given in the following table: 1 166.3 294.5 204.7 0.365 2 323.9 456.7 332.2 0.593 3 506.9 572.3 420.2 0.750 4 654, 0 651.6 482.9 0.862 5 756.5 702.0 522.8 0.933 6 824.0 734.0 548.3 0.979 7 856.6 749.0 559.9 1 8 859.2 750.4 561, 4 1.003 9 828.5 736.6 552.2 0.986 10 763.4 705.7 526.9 0.941 11 659.3 653.7 483.2 0.863 12 516.6 575.7 414.4 0.740 13 350.2 412.1 318.3 0.568 14 164.1 328.6 189.9 0.339
    The associated women's eight was developed from the men's eight by shortening the upper collar by 3 cm and installing the decks 2 cm deeper into the boat. For the women's eight, which is also known to experts under the designation R86, with a total weight of 858 kg and a waterline of 17071, the following values resulted for the respective cross-sectional area below the waterline, the respective circumference below the waterline, the respective width of the waterline and the respective width ratio in relation to the central segment 7: 1,115.4,272.9,199.2 0.358 2,207.8,433.5 324.7 0.583 3,459.8,548.4 412.2 0.741 4,598.9,627 .4 475.5 0.855 5 696.3 677.9 516.2 0.928 6 760.5 709.9 542.3 0.975 7 791.7 725.1 556.1 1 8 794.3 726.5 554.5 0.997 9 764.3 712.8 546.1 0.982 10 703.7 682.1 520.8 0.936 11 605.7 650.5 477.0 0.857 12 472.1 553.1 408.2 0.734 13 317.6 450, 5 313.2 0.563 14 147.4 309.4 187.5 0.337
    The two eights with the designation R86 are after 24 years the most successful eighth design of all time. Nevertheless, the applicant has set itself the task of further significantly reducing the overall resistance resulting from shape, friction, wave and pitch resistance.
    According to the invention, this object is achieved by the features of claims 1 and 6.
    The men's eight according to the invention has an elongated hull that ends in a pointed bow and in a pointed stern. With a total weight of 938 kg, the water line is 17211 mm ± 5%, preferably ± 3% and most preferably ± 2%. When divided into 15 segments of equal length and in the case of a total weight of 938 kg, the following values also apply for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the middle segment 7, each with a tolerance of ±5%, preferably ±3% and most preferably ±2%: 1 152.89 311.7 214.4 0.387 2 366.23 485.3 350.6 0.633 3 540.49 592.2 434.6 0.785 4 662.88 658.84 489.7 0.885 5 742.86 700.05 525.5 0.950 6 787.55 722.55 545.7 0.986 7 807.05 731.99 553.0 1 8 807.88 731.68 550.1 0.995 9 789.97 721.86 538.6 0.973 10 748.12 699.51 514.7 0.930 11 673.43 659.48 472.0 0.853 12 5910.3 .83 404.6 0.731 13 373.62 485.75 308.1 0.557 14 163.19 325.82 179.7 0.324
    With a total weight of 938kg, an average weight per rower of 95kg is taken as a basis.
    The women's eight according to the invention has an elongated hull that ends in a pointed bow and in a pointed stern. With a total weight of 858 kg, the waterline is 16793 mm ± 5%, preferably ± 3% and most preferably ± 2%. When divided into 15 segments of equal length and with a total weight of 858 kg, the following values also apply for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the middle segment 7, each with a tolerance of ±5%, preferably ±3% and most preferably ±2%: 1140.5 299.6 211.5 0.387 2345.7 472.8 346.3 0.634 3488.1 576.6 429.3 0.786 4 623.0 641.6 483.7 0.885 5 698.0 681.8 519.0 0.950 6 739.9 704.0 539.9 0.988 7 758.1 713.2 546.1 1 8 758.9 712.8 523.2 0.994 9 741.9 703.0 531.8 0.973 10 702.8 681.0 508.3 0.933 11 632.5 641.4 466.0 0.853 12 516.8 574 .8 399.5 0.731 13 351.1 470.8 304.0 0.556 14 151.9 313.0 177.3 0.324
    With a total weight of 858kg, an average weight per rower of 85kg is taken as a basis.
    [0010] To reduce the resistance, the cross-section in the middle of the boat was first reduced by reducing the area below the waterline on frame 7 in the man's eight from 856.6 cm 2 to 807.05 cm 2 . On the women's aft, the area below the waterline on frame 7 was reduced from 791.7 cm<2> to 758.1. This means an effective cross-section reduction in the middle of the boat by 5.8% or 4.2%.
    [0011] However, a cross-sectional reduction also means that the boat becomes more sensitive and unstable. According to the invention, this was compensated for by a different shape of the frame cross-sections and the distribution of the displacement volume over the length.
    The modified or flattened frame or cross-sectional profiles in the bow and midship area cause there more dynamic lift and lateral stability from a certain driving speed compared to the frame cross-sections of the R86 racing eight.
    Thus, at racing speed, the missing cross-section in the middle of the boat is replaced by a different profile and distribution by shifting the missing displacement from the middle of the boat to the ends of the boat. However, with the new lines at the ends of the boat, care had to be taken to ensure that the gain in resistance from the middle was not canceled out by thick boat ends that braked the boat.
    [0014] In addition, the latest findings on the oar stroke have been incorporated into the design of the hull. It had to be taken into account that it is not possible to generate dynamic buoyancy in the stern to stabilize the boat at the beginning of the impact when the athlete's mass is shifted to the stern. This problem was solved by increasing the longitudinal inertia, i.e. the resistance of the boat shape to shifting the crew’s weight through the oar stroke. This was achieved by providing more voluminous boat ends, especially in the rear area. This has the effect that more buoyancy volume is generated when the tail dives deeper at the start of the stroke. For this reason, the new men's eight is 14.4 mm wider in the stern at frame 3 than the predecessor boat R86, which means that the longitudinal moment of inertia of the waterline area has increased by 1.21% compared to the predecessor boat R86.
    The resistance of the new men's eight could be reduced in simulation calculations in various swimming and speed states by 3.1 to 3.5% compared to the predecessor boat R86, while at the same time the rowing properties were improved.
    The women's eight according to the invention was developed from the new men's eight, with the line shape and thus the rowing characteristics being retained. In doing so, the men's eight of the invention was scaled down to the lower displacement of 858kg and less strong physique of the women's team. The tear of the men's aft had to be reduced differently in length, width and depth in order to ultimately get a smaller aft that has the same lines, which is characterized in particular by a reduced cross-section in the middle of the boat and a wider stern.
    The gain in resistance in the simulation of the women's eight according to the invention compared to the predecessor model R88, which weighs only 858 kg, is a sensational 5.1-5.3%.
    Further configurations and advantages of the invention are explained in more detail below with reference to the drawing and the description.
    In the drawing, Fig. 1 shows a schematic representation of the racing eight in a side view and in a plan view, Fig. 2 shows a representation of the boat plans of the racing eight, from which the individual segment cuts and the width ratios along the waterline can be seen, Fig. 3 shows a representation of the nose profile and the stern profile and FIG. 4 shows the leading angles of the stern and nose.
    From Fig. 1 shows the basic structure of the men's or women's eights according to the invention, namely the arrangement of the rolling seats 1 and the foot stretchers 2 and the bow 3 and the stern 4. From this figure, the particularly narrow design, ie especially the very small ratio of overall width to overall length.
    The shape of the braces can be seen in FIG. The length of the waterline WL for a man's eight with a total weight of 938 kg is 17211 mm ± 5%, preferably ± 3%, most preferably ± 2%. The overall length of the men's eight according to the invention is 17320 mm. The length of the waterline WL in the women's eight according to the invention with a total weight of 858 kg is 16793 mm ± 5%, preferably ± 3%, most preferably ± 2%. The total length of the women's eight according to the invention is 16890 mm.
    From Fig. 3 the views of the bow 3 and the stern 4 can be seen.
    Fig. 4 shows a shortened view in the longitudinal direction with a scale of 1:10, in which the angle of attack α of the bow 3 and the angle of attack β of the stern 4 are illustrated enlarged. The angles at the men's eight are α = 4.8° ± 5%, preferably ± 3%, most preferably ± 1% and β = 5.9° ± 5%, preferably ± 3%, most preferably ± 1%. The corresponding angles in the women's eight are α = 4.8° ± 5%, preferably ± 3%, most preferably ± 1% and β = 5.4° ± 5%, preferably ± 3%, most preferably ± 1%.
    In the case of the division into 15 segment cuts/frames with the same spacing as can be seen in Fig. 4, the values already given above for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the middle segment 7.
    权利要求:
    Claims (10)
    [1]
    1. Racing eight with an elongated hull, which ends in a pointed bow (3) and in a pointed stern (4), characterized in that the waterline (WL) with a total weight of 938kg is 17211 mm ± 5% and when divided into 15 segments of equal length in the case of a total weight of 938 kg, the following values for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio based on the middle segment 7 are available, specifically each with a tolerance of ±5%: 1 152.89 311.7 214.4 0.387 2 366.23 485.3 350.6 0.633 3 540.49 592.2 434.6 0.785 4 662.88 658.84 489 .7 0.885 5 742.86 700.05 525.5 0.950 6 787.55 722.55 545.7 0.986 7 807.05 731.99 553.0 1 8 807.88 731.68 550.1 0.995 9 789, 97 721.86 538.6 0.973 10 748.12 699.51 514.7 0.930 11 673.43 659.48 472.0 0.853 12 550.3 591.83 404.6 0.731 13 373.62 308.75 305.75 1 0.557 14 163.19 325.82 179.7 0.324
    [2]
    2. Racing eight according to claim 1, characterized in that the angle (a) of the bow (3) at the waterline (WL) is 4.8° ± 5%.
    [3]
    3. Racing eight according to claim 1 or 2, characterized in that the angle of attack (β) of the stern (4) at the waterline (WL) is 5.9° ± 5%.
    [4]
    4. Racing eight according to one or more of the preceding claims, characterized in that the waterline (WL) is 17211 mm ± 3% for a total weight of 938 kg.
    [5]
    5. Racing eight according to one or more of the preceding claims, characterized in that the values for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the middle segment 7 each with a tolerance of ±3%.
    [6]
    6. Racing eight with an elongated hull that ends in a pointed bow (3) and in a pointed stern (4), characterized in that the waterline (WL) with a total weight of 858 kg is 16793 mm ± 5% and with classification in 15 segments of equal length, in the case of a total weight of 858 kg, the following values are available for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the middle segment 7, and each with a tolerance of ±5%: 1 140.5 299.6 211.5 0.387 2 345.7 472.8 346.3 0.634 3 488.1 576.6 429.3 0.786 4 623.0 641.6 483.7 0.885 5 698.0 681.8 519.0 0.950 6 739.9 704.0 539.9 0.988 7 758.1 713.2 546.1 1 8 758.9 712.8 523.2 0.994 9 741 .9 703.0 531.8 0.973 10 702.8 681.0 508.3 0.933 11 632.5 641.4 466.0 0.853 12 516.8 574.8 399.5 0.731 13 351.1 470.8 304 .0 0.556 14 151.9 313.0 177.3 0.324
    [7]
    7. Racing eight according to claim 6, characterized in that the angle (α) of the bow (3) at the waterline (WL) is 4.8° ± 5%.
    [8]
    8. Racing eight according to claim 6 or 7, characterized in that the angle of attack (β) of the stern (4) at the waterline (WL) is 5.4° ± 5%.
    [9]
    9. Racing eight according to one or more of claims 6 to 8, characterized in that the waterline (WL) is 16793 mm ± 3% for a total weight of 858 kg.
    [10]
    10. Racing eight according to one or more of Claims 6 to 9, characterized in that the values for the respective cross-sectional area below the waterline WL, the respective circumference below the waterline WL, the respective width at the waterline WL and the respective width ratio in relation to the Middle segment 7 are each present with a tolerance of ±3%.
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    同族专利:
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    US20220033038A1|2022-02-03|
    DE102020120122A1|2022-02-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102020120122.2A|DE102020120122A1|2020-07-30|2020-07-30|racing eight|
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