DE838253C - Propeller for propulsion of ships with a ring penetrating the blades - Google Patents

Propeller for propulsion of ships with a ring penetrating the blades

Info

Publication number
DE838253C
DE838253C DESCH5723A DESC005723A DE838253C DE 838253 C DE838253 C DE 838253C DE SCH5723 A DESCH5723 A DE SCH5723A DE SC005723 A DESC005723 A DE SC005723A DE 838253 C DE838253 C DE 838253C
Authority
DE
Germany
Prior art keywords
ring
propeller
blades
ships
propulsion
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.)
Expired
Application number
DESCH5723A
Other languages
German (de)
Inventor
Luebbe Schnitger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DESCH5723A priority Critical patent/DE838253C/en
Application granted granted Critical
Publication of DE838253C publication Critical patent/DE838253C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/16—Propellers having a shrouding ring attached to blades

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung bezieht sich auf Schiffspropeller nach dem Patent 8i9 2o9 mit einem inneren Ring, der sich mit den Flügeln dreht und bei dem der Durchströmquerschnitt zwischen Ring und Nabe nach hydrodynamischen Grundsätzen als Ringdüse geringen Reibungswiderstandes gestaltet ist. Sie bezweckt eine weitere Verbesserung dieses Propellers.The invention relates to ship propellers according to patent 8i9 2o9 with an inner ring that rotates with the blades and with which the flow cross-section between ring and hub according to hydrodynamic principles as a ring nozzle with low frictional resistance is designed. Its purpose is to further improve this propeller.

Gemäß der Erfindung besteht die Mittellinie des Ringprofils in ihrem Eintrittsteil aus einer flachen konvexen Kurve und in ihrem Austrittsteil aus einer an die erstere tangierenden konkaven Kurve oder Geraden. Es wird so ein gleichmäßiger Übergang zwischen den äußeren und inneren den Ring verlassenden Wasserströmen erzielt, wodurch die Wirbelbildung im Nachstrom-hinter denn Propeller verringert wird.According to the invention, the center line of the ring profile consists in theirs Entry part from a flat convex curve and in its exit part from a to the former tangent concave curve or straight line. It's going to be a steady one Transition between the outer and inner streams of water leaving the ring is achieved, whereby the vortex formation in the wake behind the propeller is reduced.

Die Zeichnung zeigt ein Ausführungsbeispiel. Die Mittellinie des Ringprofils e verläuft in ihrem Eintrittsteil nach der flachen konvexen Kurve s, während die Mittellinie t des Ringprofils e in ihrem Austrittsteil nach der an die Kurve s tangierenden flachen konkaven Kurve t verläuft.The drawing shows an embodiment. The center line of the ring profile In its entry part, e follows the flat convex curve s, while the Center line t of the ring profile e in its exit part after that tangent to the curve s flat concave curve t.

Claims (1)

PATENTANSPRUCH: Propeller zum Antrieb von Schiffen mit einem .die Flügel durchdringenden inneren Ring und einem Durchströmquerschnitt zwischen Ring und Nabe, der nach hydrodynamischen Grundsätzen. als Ringdüse geringen Reibungswiderstandes gestaltet ist, nach Patent 8t9 2o9, dadurch gekennzeichnet, daß die Mittellinie (s) des Ringprofils (e) in ihrem Eintrittsteil aus einer flachen konvexen, in ihrem Austrittsteil aus einer an die erstere tangierenden flachet konkaven Kurve (t) oder Geraden besteht. PATENT CLAIM: Propeller for propelling ships with an inner ring that penetrates the blades and a flow cross-section between ring and hub, which is based on hydrodynamic principles. is designed as a ring nozzle with low frictional resistance, according to patent 8t9 2o9, characterized in that the center line (s) of the ring profile (e) in its inlet part consists of a flat convex curve (t) or a flat concave curve tangent to the former in its outlet part Straight line.
DESCH5723A 1951-01-23 1951-01-23 Propeller for propulsion of ships with a ring penetrating the blades Expired DE838253C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH5723A DE838253C (en) 1951-01-23 1951-01-23 Propeller for propulsion of ships with a ring penetrating the blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH5723A DE838253C (en) 1951-01-23 1951-01-23 Propeller for propulsion of ships with a ring penetrating the blades

Publications (1)

Publication Number Publication Date
DE838253C true DE838253C (en) 1952-05-05

Family

ID=7424608

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH5723A Expired DE838253C (en) 1951-01-23 1951-01-23 Propeller for propulsion of ships with a ring penetrating the blades

Country Status (1)

Country Link
DE (1) DE838253C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197057A (en) * 1975-12-17 1980-04-08 Aisin Seiki Kabushiki Kaisha Fan assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197057A (en) * 1975-12-17 1980-04-08 Aisin Seiki Kabushiki Kaisha Fan assembly

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