1331975 . ___ 竹年6月//日修(更)正替換頁 九、發明說明： ---- 【發明所屬之技術領域】 本發明關於依據專利範圍第1項之一種船蛇。 【先前技術】 近來具有一螺旋槳驅動之船舵通常具有一所謂 達球狀部（Costa bulb)。此所謂的哥斯達球狀部或 (propulsion bulb)之目的在於：被設計成球狀或飛 (zeppelin-shaped)且形成流動體的凸出部，係可在該 片的區域中而被構成該推進軸的一延伸》此流動體 * 在於，該轂部（hub)的整體外型係延伸至僅具有最小 4 紊流之點。 此種類的球狀部可從如德國第1 98 44 3 53 A1 818 U和82 24 238 U號專利案而得之。 該球狀部的效果係取決於其串珠形結構，該結 該船舵或各個.船舵葉片所區別，而產生適合的流動 然而，該球狀部因此相對該船舵葉片而側向地 而在衝擊、打擊或壓力影響之情形中，在該實際的 片受到危險之前，其已處於瀕危範圍（immediate ζ〇ne)中 ° 但在該球狀部上受到衝擊、打擊或壓力之影響 中，該船舵葉片也會受到影響，因爲在一無哥斯達 之船舵葉片將受到危險之前，該球狀部會將作用於 力傳送至該船舵葉片，因而對該船舵葉片造成額外 風險。 的哥斯 整流轂 艇形狀 船舵葉 的目的 之尾波 >84 23 構係由 〇 突出， 船舵葉 danger 的情形 球狀部 其上之 的損害 1331975 %年 < 月"曰修(更)正替換μ j 【發明內容】 本發明的課題在於提供一船舵葉片，其不管相對於由 衝擊、打擊或壓力所產生之外在影響的合適流動，較不易 受到由於損壞或破壞的影響，且該流動體會在壓力或衝擊 的情形中毀壞而不造成其他影響。 於此時，如果由高度方向來看，該流動體分割該船舵 葉片成兩個區域（A，B)，藉此兩個區域被設計成在外觀上 完全相同地或不完全相同。在此觀點中，如果該船舵葉片 區域的縱向中間線不與該流動體的中間線相符而形成一角 度α係有影響的。 如果介於該船舵葉片之一區域的縱向中間線之角度α 和用於兩區域（Α，Β)之該流動體的中間線係不同的也有影 響。 就本發明而言，如果該流動體具有預定的斷裂區，其 在外力、打擊、衝擊或壓力的影響增加之情形中導致該流 動體的破壞係有利的。於此時，如果該預定的斷裂區被設 計作預定的斷裂線，則更加地有利。同樣地，將該預定的 斷裂線被設計爲在該流動體之縱向及/或橫向方向上蜿.蜒 是有功效的。且若將該預定的斷裂線配置成網狀而遍布於 該流動體上’亦爲有利的。 就本發明而言’如果該預定的斷裂區或預定的斷裂線 被設計爲材料弱化、材料減少及/或剪斷線爲有功效的。 在一有利的實施例中，如果該流動體包括金屬或非金 屬材料或金屬材料與非金屬材料的混合物係爲有功效的。 1331.97.5 . "p 1 1 "* 1 竹年，孙/日修(更)正替換買 在另一有利的實施例中，如果該流動體包括碳纖維合 成材料係爲有功效的^ * 在另—有利的實施例中，如果該材料具有埋入有碳纖 • 維、石墨纖維及/或玻璃纖維的材料係爲有功效的。 在另一有利的實施例中’如果該流動體包括一合成材 料或複數個合成材料係爲有功效的。 在另一有利的實施例中，如果該流動體包括P〇M合成 材料’如聚甲醛（polyoxymethylene)、 聚甲醛 (polyformaldehyde)或聚乙酯係爲有功效的。 更有利之發展被描述於申請專利範圍獨立項中。 該流動體一特別有利之結構爲一如下所述之結構，包 , 括兩個單獨的碗狀長型本體，循著該流動體之外型，其藉 由於該船舵葉片之外側壁面上預定的斷裂線而被保持於其 縱向邊緣的區域中，藉此面對該螺旋槳之兩個碗狀長型本 體的邊緣區域係藉由預定的斷裂線而被連接至一球蓋形組 件，牢固地或可分開地依次連接至該船舵葉片。 船舵葉片流動體的創新結構之優點爲··由於該流動體 可能被破壞，所以在壓力、打擊或衝擊影響的情形中不會 傷害到該葉片。 【實施方式】 第1圖顯示具有一驅動螺旋槳12和一船蛇13之船10 的桿柱部（stem )11，於其中該船舵葉片15安裝有一球狀或 飛艇形狀之流動體20，其較佳地設計爲一中空本體且可被 結合進該船舵葉片15及可包括兩個以上的零件（未圖 1331.97.5 Θ年/月/ /日修<更)正替換頁 示）1可附加至該船舵葉片15之外側壁面15a、15b»該 流動體20也可被設計成一整體。在該推進軸的延伸中，一 形成該流動體20之凸出部（如已知的整流轂或哥斯達球狀 部）被設計於該船舵葉片15的區域中。 該流動被體20被設計成在壓力、打擊或衝擊影響的情 形中可自我毀壞。 爲了達到自毀的可能，該流動體20之壁25包括個別 的壁區3 0，其以材料弱化或剪斷線（第6圖）的形式經由預 設的斷裂線40而互相連接。在該流動體20的壁25中，該 預設之斷裂線被設計爲在縱長方向上及/或以橫切該流動 體20之縱長方向的方式而延伸，藉此該預定的斷裂線40 也可爲不規則的。該預設之斷裂線40也可被配置成網狀遍 布於該流動體2 0上。 該預設之斷裂線40被設計且配置成使得在該流動體 20的外側壁面中，不具有皴紋、下陷、溝槽等等且因此該 平滑之外側壁面保持完整無缺的。 該船舵葉片15的創新設計之一重要因素係該流動體 20在衝擊、打擊或壓力影響的情形下會自我毀壞或脫離。 此確保沒有過度之力被傳送至該船舵葉片自身上，所以可 避免對於該船舵葉片造成任何損壞而導致實質損傷或破 壞。 第2圖顯示具有流動體20之船舵葉片15之圖，係由 三個個別的零件所組成，包含碗狀長型本體50、51及組件 55。在此，該碗狀長型本體50、51在該船舵葉片15之側 133197.5 月//日修(更)正替換頁 邊上形成該流動體2 0的側邊，而該組件5 5則形 部，換言之，實質上爲面對該螺旋槳12的略半球 箭頭X、XI、X2指出該碗狀長型本體50、51及II 該船舵葉片15處朝這些方向拆卸。特別地，該艺 的碗狀長型本體50、51及組件55爲碗形且較佳 實心本體，相當於形成在組裝完成狀態中建立於 片15上之一中空本體。 接著，該流動體20包括兩個單獨的碗狀長型 51，循著該流動體之外型，其在該船舵葉片15之 15a、15b上透過預定的斷裂線40而被保持於其 50a、51a的區域中，藉此，面對該螺旋槳12之兩 型本體50、51的邊緣區域50b、51b透過預定的丨 而被連接至一球蓋形構件，而牢固地或可分開地 船舵葉片15(第2和3圖p 從第2圖可更清楚地顯示該船舵葉片15並非 構件，而是由一上方區域A和一下方區域B所形 方區域A在其前側具有至少一曲面，其較偏向左 且該下方區域B具有至少一曲面，其較偏向右側 兩區域A和B的交界處，因區域A和B的前側區 成彼此偏移的「舌狀部」，從上視圖觀看爲近似 使得其差異變得明顯。換言之，將其中一個前側 右側，而將另一個前側區域彎向左側’其中朝向 片之中間部，該等區域A和B兩者被合倂成一個 另外，該等區域A和B之縱向中間線LM1不與 成該前端 狀端部。 巨件5 5從 乾動體20 地形成非 該船舵葉 本體50、 外側壁面 縱向邊緣 個碗狀長 斷裂線40 連接至該 一種同質 成。該上 側彎曲， 彎曲。在 域被設計 Y形，而 區域彎向 該船舵葉 重疊部。 該流動體 1331-97.5 . ___ 巧年4月//日修(更)正替換頁 20的中間線ML重疊’且兩者的縱向中間線LM1係彼 移。 第3圖顯不具有碗狀長型本體5〇、51及組件55 動體20的一船舵葉片丨5之圖。應注意到在一實施例 該區域A和B可爲不同，使得該縱向中間線LM1在 處使該前緣分開且因而設在該流動體2〇之中間線ML 之處。在本發明未於此說明的另一實施例中，該上方 A也可與該下方區域B相同，使得該縱向中間線LM1 該流動體20的中間線ML偏差係以一 〇度角或等於〇 爲相同及不同的。 第8圖和第9圖分別顯示從該船舵葉片15之下面 '面觀察之圖。在每個情形中，很明顯的該角度α介於 舵葉片15的縱向中間線LM1和該流動體20的中間鑛 之間。 第4圖顯示具有一流動體20之一船舵葉片15從 方觀察的一側視圖。於此，該等區域Α和Β係明顯的 該後側區域中，該等區域A和B係相等的，然而在該 區域中，其被設計爲不同的（同時可見於第2圖中）。 第5圖顯示該船舵葉片15從後面所觀察之一圖且 圖顯示一前視圖。在各種情況下都能清楚地觀察該流 20 « 第6圖顯示具有該流動體20之創新的船舵葉片 藉此該流動體具有在衝擊、打擊或壓力影響的情形中 易自毀之預設斷裂區°該預設斷裂區較佳爲設置成胃 此偏 之流 中， LM 1 以外 區域 對於 度而 或上 該船 [ML 左後 。在 前側 .第7 動體 15, 可較 裂線 -10 - 1331-97.5 0年g月"日修⑻正替換，、1 4〇，且遍布該流動體的表面。且較佳爲在該流動體20之縱 向及/或橫向方向中定向。如果該預設之斷裂區藉由材料減 少或由剪斷線之凹口而形成，其在此係特別有利的。該預 設斷裂線40被有利地配置成網狀遍布於該流動體20之表 面上。 分別在第8圖和第9圖中，該船舵葉片15具有一截面 區域16,其縱向中心線LM1相對該流動體20之中心線ML 而被偏移一角度（X，使得面對該驅動螺旋槳12之船舵葉片 Μ的前緣縱條（stringer strip)70變成位於該流動體20之中 心線ML以外之處。 該流動體20有利地包括金屬。雖然在其他實施例中， 其也可以非金屬材料形成，諸如一較佳地埋入有碳纖維、 石墨纖維及/或玻璃纖維之碳纖維合成材料。亦可採用金屬 材料與非金屬材料的混合物。 在其他實施例中，該流動體20也可由合成材料或複數 個合成材料所製成。POM合成材料也可被使用於此例中，諸 如聚甲醛（polyoxymethylene) ' 聚甲醒（p〇lyformaldehyde)或 聚乙酯。這些材料通常具有一高滑動品質，其有利於在水 中的摩擦。 具有流動體20之創新的船舵葉片15被有利地使用於 完全懸浮之葉片中。 如果該流動體20被整合於該船舵葉片15中或該流動 體20被各半地附加至例如該船舵葉片1 5之兩側時，其也 係有效的》 -11- 133197.5 ff年/月，ί曰修(更)正替換 如可明顯地在第2圖、第3圖和第4圖中所見，面對 該螺旋槳12之兩個懸浮船舵葉片區域A和B的前緣縱條 70、71彼此偏移一角度，使得該上船舵葉片區域A的前緣 縱條70偏移至左舷側P且該前緣縱條71偏移至右舷側S， 因此相反之偏移也係可能的。該船舵葉片1 5之外側壁面 15a、15b在背離該螺旋槳12 (扭曲船舵）之一端線75接合 在一起。 藉由該兩個船舵葉片區域A和B的前緣縱條70、71 彼此偏移，使得該上船舵葉片區域的.前緣縱條偏移至左舷 側而該下船舵葉片區域的前緣縱條偏移至右舷側，或該上 船舵葉片區域的前緣縱條偏移至右舷側而該下船舵葉片區 域的前緣縱條偏移至左舷側，在每個例子中，導致該兩個 船舵葉片區域之兩個鏡向反轉的截面外觀。 依據本發明所設計之具有兩個鏡向反轉的截面外觀之 船舵葉片15的優點，首先爲其防止氣鎖且其也防止經由具 有高荷載螺旋槳之快速船中的空化（〇^“&^0 11)所產生在船 舵上之腐蝕現象。該船舵葉片的特別結構促成燃料消耗的 減少。此改善了效率，還考慮到防止空化。也實際節省了 重量。 【圖式簡單說明】 本發明將藉由圖式於一實施例的基礎上在之後作詳細 的說明，其中： 第1圖爲具有一驅動螺旋槳、一船舵葉片，藉此船舵 葉片與所發明之球狀流動體相配合之—船的球狀部之一槪 -12- 1331975 Θ年6月/丨曰修(更)正替換頁 略圖； 第2圖爲在一爆炸圖一破壞狀態中具有一流動體之該 船舵葉片之—槪略圖’該流動體包括有三零件； 第3圖爲在一破壞狀態中具有該流動體之船舵葉片的 —前視圖； 第4圖爲具有該流動體之船舵葉片的一槪略圖； 第5圖爲具有該流動體之船舵葉片的一後視圖； 第6圖爲具有該流動體之船舵葉片的一側視圖； 第7圖爲具有該流動體之船舵葉片的—前視圖； 第8圖爲具有該流動體之船舵葉片從上方俯看的一平 面圖； 第9圖爲具有該流動體之船舵葉片從下方上看的一平 面圖； [主要元件符號說明】 10 船 11 桿柱部 12 螺旋槳 13 船舵 15 船舵葉片 I5a 外側壁面 15b 外側壁面 16 截面區域 20 流動體 25 壁 -13- 133197.5 $年t月"日修(更)正替换貞 3 0 壁 1m 40 斷 裂 線 5 0 碗 狀 長 型 本 體 5 0a 縱 向 邊 緣 5 0b 邊 緣 區 域 5 1 碗 狀 長 型 本 體 Π37. 5 1 a 縱 向 邊 緣 5 1b 邊 緣 1品. 域 55 組 件 70 刖 緣 縱 條 7 1 ^ r- 刖 緣 縱 條 75 端 線 -14-1331975 . ___ June of the Year of the Bamboo / / Repair of the Japanese (more) replacement page IX. Description of the invention: ---- Technical Field of the Invention The present invention relates to a ship snake according to item 1 of the patent scope. [Prior Art] Recently, a rudder having a propeller drive usually has a so-called Costa bulb. The purpose of this so-called propulsion bulb is to design a spherical or zeppelin-shaped projection that forms a flow body that can be constructed in the area of the sheet. An extension of the propulsion shaft is that the overall shape of the hub extends to a point having only a minimum of 4 turbulence. Balls of this type are available, for example, from German Patent Nos. 1 98 44 3 53 A1 818 U and 82 24 238 U. The effect of the spheroid is dependent on its beaded configuration, which is distinguished by the rudder or each rudder blade to produce a suitable flow. However, the spheroid is thus laterally opposed to the rudder blade. In the case of impact, blow or pressure, before the actual piece is in danger, it is already in the immediate °ne range but is affected by impact, blow or pressure on the spheroid. The rudder blade is also affected because the ball will transmit force to the rudder blade before a rudder blade without Costa has a risk, thus posing additional risk to the rudder blade . The shape of the Goss revolving hub boat shape of the rudder blade of the tail wave > 84 23 The structure is highlighted by the stern, the rudder leaf danger case the damage on the globular part 1331975 % years < month " 曰修More] positive replacement μ j [Disclosed] The object of the present invention is to provide a rudder blade that is less susceptible to damage or damage, regardless of the appropriate flow affected by impact, blow or pressure. And the fluid will be destroyed in the event of pressure or shock without causing other effects. At this time, if viewed from the height direction, the flow body divides the rudder blade into two regions (A, B), whereby the two regions are designed to be identical or not identical in appearance. In this view, if the longitudinal intermediate line of the rudder blade region does not coincide with the intermediate line of the flow body, an angle α is formed which is influential. If the angle α between the longitudinal intermediate line of one of the rudder blades is different from the intermediate line of the flow for the two regions (Α, Β), there is also an influence. In the case of the present invention, if the fluid body has a predetermined fracture zone, it is advantageous in the case where the influence of external force, blow, impact or pressure is increased to cause the destruction of the fluid body. At this time, it is more advantageous if the predetermined fracture zone is designed as a predetermined fracture line. Similarly, the predetermined breaking line is designed to be effective in the longitudinal and/or lateral direction of the flowing body. It is also advantageous if the predetermined breaking line is arranged in a mesh shape and spread over the flowing body. For the purposes of the present invention, 'if the predetermined fracture zone or predetermined fracture line is designed to be material weakened, material reduced and/or shear lines are effective. In an advantageous embodiment, the fluid body comprises a metallic or non-metallic material or a mixture of a metallic material and a non-metallic material is effective. 1331.97.5 . "p 1 1 "* 1 Year of the Bamboo, Sun/Rissue (more) is being replaced in another advantageous embodiment if the fluid comprises a carbon fiber composite material that is effective ^ * In another advantageous embodiment, the material is efficacious if it has a material in which carbon fibers, graphite fibers, and/or glass fibers are embedded. In another advantageous embodiment, 'if the fluid comprises a synthetic material or a plurality of synthetic materials is effective. In another advantageous embodiment, the fluid comprises a P〇M synthetic material such as polyoxymethylene, polyformaldehyde or polyethylene. A more advantageous development is described in the separate item of the scope of the patent application. A particularly advantageous structure of the fluid body is a structure as described below, comprising two separate bowl-shaped elongated bodies, following the shape of the flow body, which is predetermined by the outer side wall surface of the rudder blade The break line is held in the region of its longitudinal edge, whereby the edge regions of the two bowl-shaped elongated bodies facing the propeller are connected to a dome-shaped assembly by a predetermined breaking line, firmly Alternatively, it may be connected to the rudder blade in turn. The advantage of the innovative structure of the rudder blade flow body is that the flow body may be damaged, so that the blade will not be damaged in the case of pressure, shock or impact. [Embodiment] FIG. 1 shows a stem 11 having a ship 10 for driving a propeller 12 and a ship snake 13, wherein the rudder blade 15 is mounted with a spherical or airship-shaped flow body 20, It is preferably designed as a hollow body and can be incorporated into the rudder blade 15 and can include more than two parts (not shown in Figure 1331.97.5 Θ / / / / / / / / / / / It can be attached to the outer side wall faces 15a, 15b of the rudder blade 15 . The flow body 20 can also be designed as a whole. In the extension of the propulsion shaft, a projection forming the flow body 20 (such as a known rectifying hub or a Costa ball) is designed in the region of the rudder blade 15. The flow body 20 is designed to be self-destructive in the event of a pressure, blow or impact. In order to achieve the possibility of self-destruction, the wall 25 of the flow body 20 comprises individual wall regions 30 which are interconnected via a predetermined breaking line 40 in the form of a material weakening or shearing line (Fig. 6). In the wall 25 of the flow body 20, the predetermined breaking line is designed to extend in the longitudinal direction and/or in a manner transverse to the longitudinal direction of the flow body 20, whereby the predetermined breaking line 40 can also be irregular. The predetermined break line 40 can also be configured to be meshed over the flow body 20. The predetermined break line 40 is designed and configured such that in the outer sidewall faces of the flow body 20, there are no creases, depressions, grooves, etc. and thus the smooth outer sidewall faces remain intact. An important factor in the innovative design of the rudder blade 15 is that the fluid body 20 will self-destruct or disengage under the influence of impact, blow or pressure. This ensures that no excessive force is transmitted to the rudder blade itself, so that any damage to the rudder blade can be avoided resulting in substantial damage or damage. Figure 2 shows a diagram of a rudder blade 15 having a flow body 20 comprised of three individual components, including a bowl-shaped elongated body 50, 51 and assembly 55. Here, the bowl-shaped elongated body 50, 51 forms the side of the flow body 20 on the side of the rudder blade 15 at 13319 7.5 months/day (replacement), and the assembly 5 5 The shape, in other words, substantially the hemispherical arrows X, XI, X2 facing the propeller 12 indicate that the bowl-shaped elongated bodies 50, 51 and II are detached in these directions. In particular, the bowl-shaped elongated body 50, 51 and assembly 55 of the art are bowl-shaped and preferably solid bodies, corresponding to a hollow body formed on the sheet 15 in an assembled state. Next, the flow body 20 comprises two separate bowl-shaped elongated shapes 51 which, following the shape of the flow body, are held at its 50a by a predetermined breaking line 40 on the 15a, 15b of the rudder blade 15. In the region of 51a, the edge regions 50b, 51b of the two-type bodies 50, 51 facing the propeller 12 are connected to a spherical cap member through a predetermined weir, and the rudder is firmly or detachably The blade 15 (Figs. 2 and 3) from Fig. 2 more clearly shows that the rudder blade 15 is not a member, but the square region A formed by an upper region A and a lower region B has at least one curved surface on the front side thereof. , the lower area B has at least one curved surface, which is more biased to the boundary between the two right areas A and B, because the front side areas of the areas A and B are offset from each other by a "tongue" from the top view. The viewing is approximated such that the difference becomes apparent. In other words, one of the front side right side is turned and the other front side area is bent to the left side 'where the middle part of the sheet is merged, and the areas A and B are merged into one another, The longitudinal intermediate line LM1 of the areas A and B does not coincide with the front end The upper end portion is formed by the trunk member 50 from the trunk body 50, and the longitudinal edge of the outer side wall surface is connected to the homogenous mass. The upper side is curved and curved. The Y-shape is designed, and the area is bent toward the overlapping portion of the rudder blade. The flow body is 1331-97.5. ___ The April//day repair (more) is replacing the middle line ML of the page 20 overlapping 'and the longitudinal middle of the two The line LM1 is moved. Fig. 3 shows a diagram of a rudder blade 丨5 of the bowl-shaped elongated body 5〇, 51 and the assembly 55 of the moving body 20. It should be noted that in an embodiment, the areas A and B can be The difference is such that the longitudinal intermediate line LM1 separates the leading edge and is thus located at the intermediate line ML of the flow body 2〇. In another embodiment of the invention not illustrated herein, the upper A is also The same as the lower region B, such that the longitudinal intermediate line LM1 has a middle line ML deviation of the flow body 20 which is the same and different at a twist angle or equal to 〇. Figures 8 and 9 respectively show the ship from the ship. The view of the underside of the rudder blade 15 is observed. In each case, it is obvious that the angle α is between the rudder Between the longitudinal intermediate line LM1 of the sheet 15 and the intermediate ore of the flow body 20. Figure 4 shows a side view of the rudder blade 15 having a flow body 20 as viewed from the side. Here, the areas are Α and Β In the apparent rear side region, the regions A and B are equal, however in this region they are designed to be different (also visible in Figure 2). Figure 5 shows the rudder blade 15 One of the figures is shown from the back and the figure shows a front view. The flow 20 can be clearly observed in each case « Figure 6 shows an innovative rudder blade with the flow body 20 whereby the flow body has an impact Pre-destruction zone that is easy to self-destruct in the case of impact or pressure. The pre-set fracture zone is preferably set to be in the flow of the stomach, and the area other than LM 1 is for the degree or the ship [ML left rear. On the front side. The 7th moving body 15, can be more than the crack line -10 - 1331-97.5 0 year g month " daily repair (8) is being replaced, 14 4, and spread over the surface of the flow body. Preferably, it is oriented in the longitudinal and/or transverse direction of the flow body 20. It is particularly advantageous here if the predetermined fracture zone is formed by a reduction in material or by a notch of the shear line. The predetermined breaking line 40 is advantageously configured to be meshed over the surface of the flow body 20. In Figures 8 and 9, respectively, the rudder blade 15 has a cross-sectional area 16 whose longitudinal centerline LM1 is offset by an angle (X against the centerline ML of the flow body 20 such that the drive is faced The leading edge strip 70 of the rudder blade of the propeller 12 becomes located outside of the centerline ML of the flow body 20. The flow body 20 advantageously comprises metal. Although in other embodiments it may The non-metallic material is formed, such as a carbon fiber composite material preferably embedded with carbon fibers, graphite fibers, and/or glass fibers. A mixture of a metal material and a non-metal material may also be used. In other embodiments, the flow body 20 is also It can be made of synthetic materials or a plurality of synthetic materials. POM synthetic materials can also be used in this case, such as polyoxymethylene 'p〇lyformaldehyde' or polyethyl ester. These materials usually have a high Sliding quality, which facilitates friction in water. The innovative rudder blade 15 with the flow body 20 is advantageously used in fully suspended blades. If the flow body 20 is integrated into the ship When the rudder blade 15 or the flow body 20 is attached to, for example, both sides of the rudder blade 15 by the respective halves, it is also effective -11- 133197.5 ff/month, and the repair is replaced. As can be clearly seen in Figures 2, 3 and 4, the leading edge longitudinal strips 70, 71 of the two suspended rudder blade regions A and B facing the propeller 12 are offset from each other by an angle such that The leading edge longitudinal strip 70 of the upper rudder blade area A is offset to the port side P and the leading edge longitudinal strip 71 is offset to the starboard side S, so that an offset is also possible. The rudder blade 15 The outer side wall faces 15a, 15b are joined together at an end line 75 facing away from the propeller 12 (twisted rudder). The front edge longitudinal strips 70, 71 of the two rudder blade areas A and B are offset from each other such that the upper side faces 15a, 15b The leading edge longitudinal strip of the rudder blade region is offset to the port side and the leading edge longitudinal strip of the lower rudder blade region is offset to the starboard side, or the leading edge longitudinal strip of the upper rudder blade region is offset to the starboard side The leading edge longitudinal strip of the lower rudder blade region is offset to the port side, in each case causing two mirror reversal of the two rudder blade regions Cross-sectional appearance. The advantage of the rudder blade 15 having a two-mirror reversed cross-sectional appearance designed in accordance with the present invention is firstly to prevent air lock and also to prevent cavitation in a fast ship via a high-loaded propeller ( 〇^“&^0 11) Corrosion phenomena generated on the rudder. The special structure of the rudder blade contributes to a reduction in fuel consumption. This improves efficiency and also prevents cavitation. It also saves weight. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in detail below on the basis of an embodiment, wherein: FIG. 1 has a driving propeller and a rudder blade, whereby the rudder blade and the rudder blade The spherical flow body of the invention is matched with one of the spherical parts of the ship 槪-12- 1331975. The following year is the replacement of the page thumbnail; the second picture is in the state of destruction of an explosion map. The rudder blade having a flow body has a three-part view; the third view is a front view of the rudder blade having the flow body in a broken state; and the fourth figure is the flow having the flow A sketch of the rudder blade of the body Figure 5 is a rear view of the rudder blade having the flow body; Figure 6 is a side view of the rudder blade having the flow body; Figure 7 is a front view of the rudder blade having the flow body Figure 8 is a plan view of the rudder blade having the flow body viewed from above; Figure 9 is a plan view of the rudder blade having the flow body viewed from below; [Main component symbol description] 10 11 pole part 12 propeller 13 rudder 15 rudder blade I5a outer side wall surface 15b outer side wall surface 16 section area 20 flow body 25 wall-13- 133197.5 $year tmonth "day repair (more) replacement 贞3 0 wall 1m 40 Breaking line 5 0 bowl-shaped long body 5 0a longitudinal edge 5 0b edge area 5 1 bowl-shaped long body Π 37. 5 1 a longitudinal edge 5 1b edge 1 product. Field 55 component 70 rim longitudinal strip 7 1 ^ r-刖缘纵条75 End line-14-