[go: up one dir, main page]

DE89075C - - Google Patents

Info

Publication number
DE89075C
DE89075C DENDAT89075D DE89075DA DE89075C DE 89075 C DE89075 C DE 89075C DE NDAT89075 D DENDAT89075 D DE NDAT89075D DE 89075D A DE89075D A DE 89075DA DE 89075 C DE89075 C DE 89075C
Authority
DE
Germany
Prior art keywords
propeller
water
blades
housing
screw
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.)
Active
Application number
DENDAT89075D
Other languages
German (de)
Publication of DE89075C publication Critical patent/DE89075C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H11/00Marine propulsion by water jets
    • B63H11/02Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/16Propellers 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)
  • Sliding-Contact Bearings (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Vorliegende Erfindung betrifft Verbesserungen an der unter Nr. 86469 patentirten Propeller-Anordnung und wird auf der beiliegenden Zeichnung durch Fig. 1 im Längsschnitt und durch Fig. 2 im Querschnitt nach Linie A-B der Fig. 1 zur Anschauung gebracht.The present invention relates to improvements to the propeller arrangement patented under No. 86469 and is illustrated in the accompanying drawing by FIG. 1 in longitudinal section and by FIG. 2 in cross section along line AB of FIG.

Das rohrartige Gehäuse C, welches dem Propeller das Wasser vom Bug her zuführt, soll nach der vorliegenden Erfindung mit seinem Ausflufs nicht mehr aus dem Heck herausragen, sondern mit dem Heck glatt abschneiden. Das Gehäuse C trägt am Heckende auf drei Stutzen s ein Lager D, welches der in ihm untergebrachten Schraubenwelle G eine vibrationsfreie Führung sichert. Der Propeller E ist mit dem ihn umgebenden Rohrstutzen Funwandelbar verbunden, schliefst direct an das Gehäuse C an und liegt mit der Welle G in einer Achse, so dafs Propeller E und sein Rohrmantel F gemeinschaftlich rotiren.The tubular housing C, which feeds the water to the propeller from the bow, should, according to the present invention, no longer protrude with its outflow from the stern, but should cut off smoothly with the stern. The housing C carries a bearing D on three nozzles s at the rear end, which ensures a vibration-free guidance for the screw shaft G housed in it. The propeller E is connected to the surrounding pipe socket in a non-changeable manner, is directly connected to the housing C and lies with the shaft G in one axis, so that the propeller E and its pipe casing F rotate together.

Diese Anordnung bietet gegenüber der in dem Patent Nr. 86469 gekennzeichneten die folgenden Vortheile:This arrangement provides over that identified in Patent No. 86469 the following advantages:

Die Schraubenflügel werden bis zur äufsersten Peripherie ausgenutzt, so dafs der schädliche Raum, welcher zwischen dem äufseren Kreise der Flügel und dem inneren Kreise des Mantels erforderlich ist, ganz fortfällt, also der Durchmesser des Propellers vergröfsert und jede centrifugale Wasserverschleuderung nebst damit verbundener Reibung vermieden ist. Ferner brauchen die Flügel der Schraube weder an der Nabe noch im allgemeinen so kräftig construirt zu sein, wie bisher,, ohne dafs ein ,Bruch der Flügel zu befürchten ist, weil die Widerstandsmomente, die an der Flügelperipherie am stärksten sind, von der Befestigung am Rohrstutzen F aufgefangen werden; auch die Wasserverdrängung durch die Flügel wird bedeutend geringer; hierzu kommt noch, dafs der Wasserstrom innerhalb des Mantels F ohne jede Drehung bleibt und auf die ganze Länge des Mantels F in gerader Linie nur mit gleitender Reibung hinausgedrückt wird. Aufserdem kann für Schiffe mit normalen Geschwindigkeiten die Zwei-, Drei- und Viertheiligkeit des' Wasserstromes entsprechend der Anzahl der Schraubenflügel vermieden werden, indem man der Schraube einen ungetheilten Gewindegang giebt.The propeller blades are used up to the outermost periphery, so that the harmful space which is required between the outer circle of the blades and the inner circle of the mantle is completely eliminated, i.e. the diameter of the propeller is increased and any centrifugal flinging of water and associated friction is avoided . Furthermore, the wings of the screw do not need to be constructed as strong as before, neither at the hub nor in general, without fear of breaking the wing, because the moments of resistance, which are strongest at the wing periphery, come from the attachment to the Pipe socket F are collected; The displacement of water by the wings is also significantly less; In addition, the stream of water within the jacket F remains without any rotation and is pushed out over the entire length of the jacket F in a straight line only with sliding friction. Furthermore, for ships with normal speeds, the two-, three-, and four-divisional nature of the water flow, corresponding to the number of propeller blades, can be avoided by giving the propeller an undivided thread.

Claims (1)

Patent-Anspruch:Patent claim: Eine Ausführungsform der Schiffsschraube nach Patent Nr. .86469, bei welcher die Schraube (E) von einem starr mit ihr verbundenen Mantel (F) umgeben ist, der die Verlängerung des Gehäuses (C) nach hinten bildet.An embodiment of the propeller according to Patent no. .86469, wherein the screw (E) is surrounded by a rigidly connected thereto sheath (F), which forms the extension of the casing (C) to the rear. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT89075D Active DE89075C (en)

Publications (1)

Publication Number Publication Date
DE89075C true DE89075C (en)

Family

ID=360921

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT89075D Active DE89075C (en)

Country Status (1)

Country Link
DE (1) DE89075C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015556A (en) * 1973-06-04 1977-04-05 Bordiga Alejandro Lorenzo Carl Device for propelling boats

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015556A (en) * 1973-06-04 1977-04-05 Bordiga Alejandro Lorenzo Carl Device for propelling boats

Similar Documents

Publication Publication Date Title
DE2156319C3 (en)
DE2622235C2 (en)
DE1556505C3 (en) Two-stage hydraulic jet propulsion for watercraft
DE3347679C2 (en) Double propeller
DE1238340B (en) Vertical take off aircraft with two turbine blowers on the side of the fuselage
EP0935553A1 (en) Dual propeller propulsion system for a water craft
DE3713993C2 (en)
DE2403016A1 (en) GEAR FOR A SPEED BLOWER WITH VARIABLE BLADE PITCH
DE89075C (en)
EP1445193A1 (en) Turboprop power plant with two corotating and axially displaced propellers
DE3519599A1 (en) Boat drive
EP0452538B1 (en) Jet drive for ships and airplanes and also pumps
DE60121780T2 (en) Buoyancy generating device with a continuously rotating impeller
DE3901672A1 (en) Controllable-pitch marine propeller with adjustable stops
EP0154954B1 (en) Marine propeller blade pitch changing mechanism
DE932593C (en) Nacelle containing propellers and motors for propelling ships
DE1756889A1 (en) Propeller arrangement
DE10158320A1 (en) Drive system for ship has pod outside hull with central body held on flow straightening vanes and containing electric motor driving ducted propeller to produce water jet
WO2002020347A2 (en) Driving mechanism disposed on the outside of the hull of a watercraft
DE241203C (en) Bolt with fixed, axially curved counter-blades without a jacket.
DE344283C (en)
DE1997210U (en) Propulsion system for ships and airplanes.
DE258743C (en)
DE293611C (en)
DE1808637A1 (en) Propeller system