JPH03217394A - Hull form in high speed vessel - Google Patents

Hull form in high speed vessel

Info

Publication number
JPH03217394A
JPH03217394A JP2011913A JP1191390A JPH03217394A JP H03217394 A JPH03217394 A JP H03217394A JP 2011913 A JP2011913 A JP 2011913A JP 1191390 A JP1191390 A JP 1191390A JP H03217394 A JPH03217394 A JP H03217394A
Authority
JP
Japan
Prior art keywords
aerofoil
deck
propeller
hull
high speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2011913A
Other languages
Japanese (ja)
Other versions
JP2718016B2 (en
Inventor
Noriyuki Sasaki
紀幸 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP2011913A priority Critical patent/JP2718016B2/en
Publication of JPH03217394A publication Critical patent/JPH03217394A/en
Application granted granted Critical
Publication of JP2718016B2 publication Critical patent/JP2718016B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/322—Other means for varying the inherent hydrodynamic characteristics of hulls using aerodynamic elements, e.g. aerofoils producing a lifting force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

PURPOSE:To secure a surface effect, generating a large lift in an aerofoil, and thereby reduce the extent of displacement in the hull during navigation by forming the side form of a deck into an aerofoil shape, in a half-sinking ship. CONSTITUTION:A high speed vessel is made up by supporting an aerofoil-form deck (aerofoil deck) 3 in the upper part of an ovoid submerged body 1, by way of example, via a narrow slat 2. A propeller 4 is installed in a rear part of the submerged body 1. According to this method, a large lift is produced in an aerofoil owing to a surface effect, namely, a hydrodynamic effect as another one more of the same aerofoil is opposed in border of a water surface, thereby floating the hull, so that displacement of the hull during navigation is reducible. In addition, a propeller tip 4' of a propeller 4 is made close to a rear end of the deck 3, so that any possible reduction in lift due to a separation phenomenon of the aerofoil back face is thus preventable.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は高速船の船体抵抗の軽減と推進効率の向上を可
能とする船体形状に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a hull shape that makes it possible to reduce hull resistance and improve propulsion efficiency of a high-speed boat.

（従来技術） 高速船の船体抵抗は、造波抵抗と粘性抵抗がほぼ同等の
割合で占められている．造波抵抗を軽減するには、水面
貫通部を出来る丈細長くすれば良い。一方、そうするた
めには船体を浮かせるための浮力分担部分（例えばオボ
イド，フーティング、その他）が必要となり、逆に浸水
面積の増加による粘性抵抗の増加が問題になっている。(Prior art) The hull resistance of a high-speed ship is composed of approximately equal proportions of wave resistance and viscous resistance. In order to reduce wave resistance, the water surface penetrating portion should be made as long and thin as possible. On the other hand, in order to do so, a buoyancy sharing part (such as an ovoid, footing, etc.) is required to keep the hull afloat, and conversely, an increase in viscous resistance due to an increase in the flooded area has become a problem.

（発明が解決しようとする課題） 高速船の上記問題点に鑑み、造波抵抗を軽減する為の水
面貫通部を出来る丈細長くシ，かつ浸水面積が少くてし
かも船体を浮かせることができる船体を提供することを
目的とする。(Problems to be Solved by the Invention) In view of the above-mentioned problems of high-speed ships, the aim is to create a hull that has a long and narrow water surface penetration part to reduce wave-making resistance, has a small flooded area, and can float the hull. The purpose is to provide.

（課題を解決するための手段） 半没水船においてデッキの側面形状をエーロフオイル形
にして揚力を発生し易いようにした．又、エーロフオイ
ル形デッキの後端にサーフェイスプロペラを備えて剥離
現象をなくすようにした。(Means for solving the problem) In a semi-submerged ship, the side shape of the deck was made into an airflow oil type to facilitate the generation of lift. Additionally, a surface propeller was installed at the rear end of the Aerofoil type deck to eliminate the separation phenomenon.

さらにエーロフオイル形デッキの船首部内にブロワーを
設けて、造波抵抗を少くしうるようにした． （第１実施例） 第１図〜第３図に基いて説明する。第１図で１はオボイ
ド形をした没水体である。没水体１上には巾の狭いスラ
ット２を介しエーロフオイル形デッキ（翼形デッキ）３
が支持されている。４は没水体１後部のプロペラである
。エーロフオイル形デッキ３は第３図に示すごとく、側
断面形状が翼形をなしている。Additionally, a blower was installed in the bow of the Aerofoil type deck to reduce wave-making resistance. (First Example) This will be explained based on FIGS. 1 to 3. In Figure 1, 1 is an ovoid-shaped submerged body. An airfoil type deck (airfoil type deck) 3 is installed on the submerged body 1 through narrow slats 2.
is supported. 4 is a propeller at the rear of the submerged body 1. As shown in FIG. 3, the airfoil type deck 3 has an airfoil-shaped side cross section.

（作用） 船体特にデッキをエーロフオイル形にしたので、高速で
航走すると、 １）水面効果、即ち第４図の様に、丁度水面を境にして
もうひとつ同じ翼が向き合うような流体力学的効果によ
り翼に大きい揚力Ｆが発生し浮上させるので，航走中船
体の排水量を減少させることができる。(Function) Since the hull, especially the deck, is shaped like an airfoil, when sailing at high speed, 1) Water surface effect, that is, a hydrodynamic effect where two identical wings face each other just at the water surface, as shown in Figure 4. This generates a large lift force F on the wings, causing them to float, thereby reducing the amount of displacement of the hull during navigation.

２）又プロペラ４のプロペラチップ４′をデツキ３の後
面に近づけることにより、翼背面のはく離即ち第５図の
様にデッキ３の背面で剥離が起こると、背面の圧力が上
昇し揚力が減少するが，第６図の如く後端にプロペラチ
ップ４′を近づけると吸い込み作用により剥離が防止さ
れ、理想的な流れが達成される。2) Also, by bringing the propeller tip 4' of the propeller 4 close to the rear surface of the deck 3, if separation occurs on the back surface of the deck 3 as shown in Figure 5, the pressure on the back surface will increase and the lift will decrease. However, when the propeller tip 4' is brought close to the rear end as shown in FIG. 6, separation is prevented by the suction action and an ideal flow is achieved.

（第２実施例） 第７図〜第９図はエーロフオイル形デッキ３については
第１実施例と同じであるが、サーフェイスプロペラ４′
を組み合わせてデッキ３の下部により高い水面効果を発
揮させるようにしたものである． （第３実施例） 第１０図はこれ又エーロフオイル形デッキ３については
前記第１及び第２実施例と同じであるが、造波抵抗軽減
の為のブロワー５を船首のエーロフオイル形デッキ３内
に設け、造波抵抗を軽減すると同時に船体浮力も補うよ
うにしたものである．船首エーロフオイル形デッキ３内
に設けたブロワー５よりエーロフオイル形デッキの上面
から下面に向う空気流を発生させ、この空気流により船
首波６を第１０図の実線Ａから点線Ｂの如く変形させ造
波抵抗を軽減させ、同時に船体浮力もこのブロワー５の
反力で補うようにしたものである．（効果） 没水体の上部にスラットを介しエーロフオイル形デッキ
を支持させたので、水面効果により翼に対し大きな揚力
を発生させることができる。大きな揚力により細巾のス
ラット部が水面部に来るようにして水面貫通部の面積を
小にし、造波抵抗を減少できる． さらに又プロペラをエーロフオイル形デッキの後端に近
付けたので、デッキを構成する翼背面の剥離現象による
揚力の減少を防止できる．又デッキの船首部内にブロワ
ーを設けたので，これによって導入された空気を波面に
ぶつけることによって造波抵抗を軽減することが可能と
なった。(Second Embodiment) In FIGS. 7 to 9, the airflow oil type deck 3 is the same as the first embodiment, but the surface propeller 4'
By combining these, the lower part of deck 3 has a higher water surface effect. (Third Embodiment) FIG. 10 shows that the Aerofoil deck 3 is the same as the first and second embodiments, but the blower 5 for reducing wave resistance is installed in the Aerofoil deck 3 at the bow. This system is designed to reduce wave-making resistance and at the same time compensate for the buoyancy of the ship. A blower 5 installed in the bow Aerofoil deck 3 generates an airflow from the upper surface to the lower surface of the Aerofoil deck, and this airflow deforms the bow wave 6 from the solid line A to the dotted line B in Figure 10, creating waves. This reduces the resistance and at the same time compensates for the hull buoyancy with the reaction force of the blower 5. (Effects) Since the airfoil type deck is supported on the upper part of the submerged body through slats, it is possible to generate a large lift force on the wing due to the water surface effect. The large lifting force brings the narrow slats closer to the water surface, reducing the area of the water surface penetration and reducing wave-making resistance. Furthermore, since the propeller is placed close to the rear end of the air-oil type deck, it is possible to prevent a reduction in lift due to separation of the back surface of the blades that make up the deck. Additionally, a blower was installed in the bow of the deck, which made it possible to reduce wave-making resistance by hitting the wave surface with the introduced air.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明第１実施例の側面図を示し、第２図は同
じく正面図。 第３図は第２図のｍ−ｍ断面図。 第４図は水面効果の説明図。 第５図は剥離現象の説明図． 第６図はプロペラチップをデッキ後端に近付けた場合の
気流の状態の説明図。 第７図は本発明の第２実施例側面図。 第８図は第７図の■一■断面図。 第９図は第７図のＩＸ−ＩＫ矢視図． 第１０図は本発明の第３実施例側面図．図において； １　没水体　　　　　　２　スラット ３　エーロフオイル形デッキ ４　プロペラ　　　　４′　プロペラチップ４′　サー
フェイスプロペラ ５　ブロワー　　　　　６　船首波 以上FIG. 1 shows a side view of the first embodiment of the present invention, and FIG. 2 is a front view of the same. FIG. 3 is a sectional view taken along the line mm in FIG. 2. Figure 4 is an explanatory diagram of the water surface effect. Figure 5 is an illustration of the peeling phenomenon. FIG. 6 is an explanatory diagram of the state of airflow when the propeller tip is brought close to the rear end of the deck. FIG. 7 is a side view of a second embodiment of the present invention. Figure 8 is a cross-sectional view of Figure 7. Figure 9 is a view taken along the IX-IK arrow in Figure 7. FIG. 10 is a side view of the third embodiment of the present invention. In the figure: 1 Submerged body 2 Slat 3 Aerofoil type deck 4 Propeller 4' Propeller tip 4' Surface propeller 5 Blower 6 Above the bow wave

Claims (3)

【特許請求の範囲】[Claims] （１）半没水船においてデッキの側面形状をエーロフオ
イル形にしたことを特徴とする高速船の船体形状。(1) A hull shape of a high-speed ship characterized by having a semi-submerged ship with an airfoil-shaped side surface of the deck. （２）エーロフオイル形デッキの後端にサーフェイスプ
ロペラを備えたことを特徴とする請求項（１）記載の高
速船の船体形状。(2) The hull shape of a high-speed boat according to claim (1), characterized in that a surface propeller is provided at the rear end of the Aerofoil type deck. （３）エーロフオイル形デッキの船首部内に水面に向っ
て吹出すブロワーを設けたことを特徴とする請求項（１
）又は（２）記載の高速船の船体形状。(3) Claim (1) characterized in that a blower that blows air toward the water surface is provided in the bow of the Aerofoil type deck.
) or the hull shape of the high-speed ship described in (2).
JP2011913A 1990-01-23 1990-01-23 Hull shape of high-speed ship Expired - Lifetime JP2718016B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011913A JP2718016B2 (en) 1990-01-23 1990-01-23 Hull shape of high-speed ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011913A JP2718016B2 (en) 1990-01-23 1990-01-23 Hull shape of high-speed ship

Publications (2)

Publication Number Publication Date
JPH03217394A true JPH03217394A (en) 1991-09-25
JP2718016B2 JP2718016B2 (en) 1998-02-25

Family

ID=11790952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011913A Expired - Lifetime JP2718016B2 (en) 1990-01-23 1990-01-23 Hull shape of high-speed ship

Country Status (1)

Country Link
JP (1) JP2718016B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646197U (en) * 1987-06-26 1989-01-13
JPH01244957A (en) * 1988-03-28 1989-09-29 Mitsubishi Heavy Ind Ltd Surface effect plane having end plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646197U (en) * 1987-06-26 1989-01-13
JPH01244957A (en) * 1988-03-28 1989-09-29 Mitsubishi Heavy Ind Ltd Surface effect plane having end plate

Also Published As

Publication number Publication date
JP2718016B2 (en) 1998-02-25

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