AT137005B - Multi-wing propeller. - Google Patents

Multi-wing propeller.

Info

Publication number
AT137005B
AT137005B AT137005DA AT137005B AT 137005 B AT137005 B AT 137005B AT 137005D A AT137005D A AT 137005DA AT 137005 B AT137005 B AT 137005B
Authority
AT
Austria
Prior art keywords
wing
suction
curvature
pressure
desc
Prior art date
Application number
Other languages
German (de)
Inventor
Joseph Jeremiah Callahan
Original Assignee
Joseph Jeremiah Callahan
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 Joseph Jeremiah Callahan filed Critical Joseph Jeremiah Callahan
Application granted granted Critical
Publication of AT137005B publication Critical patent/AT137005B/en

Links

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Mehrflügelige   Treibschraimbp.   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 zu sichern. Fig. 7 zeigt einen Querschnitt durch einen solchen Flügel, wobei   die Treibfläche   mit   23,   der   Flügelhinterteil   oder Verdichtungsfläche mit   24   bezeichnet ist. 



   Die Verdichtungsfläche 15 soll im Verhältnis zur Länge der   Treibfläche. M nicht allzuhoch   werden, damit sie nicht übermässig grosse zentripetale Kräfte hervorruft. Beim Entwurf des Flügelquerschnittes soll daher die Regel eingehalten werden, dass die Verbindungslinie zwischen dem Schnittpunkt der Einschnittkante 16 und dem Schnittpunkt der Endkante 17 der Verdichtungsfläche mit der Querschnittebene unter einem weniger als 45Q betragenden Winkel zur Drehungsebene geneigt sein soll. 



   Die   Treibfläche   weist auch im Radialschnitt eine Krümmung auf, u. zw. sind ihre nahe dem Flügelende liegenden Teile mit Bezug auf die axiale Bewegungsrichtung der Schraube nach hinten gebogen, was weiters dazu beiträgt, radial nach abwärts gerichtete, durch die Fliehkraft hervorgerufene Bewegungen des hinter den Flügeln unter Druck gesetzten Mediums (Flüssigkeit oder Gas) zu verhindern. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Multi-wing drive sash.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 to secure. FIG. 7 shows a cross section through such a wing, the driving surface being designated by 23, the wing rear part or compression surface being designated by 24.



   The compression surface 15 should be in relation to the length of the driving surface. M do not become too high, so that it does not cause excessively large centripetal forces. When designing the wing cross-section, the rule should therefore be observed that the connecting line between the point of intersection of the incision edge 16 and the point of intersection of the end edge 17 of the compression surface with the cross-sectional plane should be inclined at an angle of less than 45 ° to the plane of rotation.



   The drive surface also has a curvature in radial section, u. between the parts near the wing tip are bent backwards in relation to the axial direction of movement of the screw, which further contributes to radially downward movements caused by centrifugal force of the medium (liquid or gas) placed under pressure behind the wings prevent.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRFCH : Mehrflügelige Treibschraube, deren Flügel je bei gegen das Aussenende hin abnehmendem Steigungswinkel und in einer queraxialen Ebene verlaufenden Hinterkante eine an dieser in die Achsrichtung übergehende, druck-und saugseitige Querwölbung haben, dadurch gekennzeichnet, dass der von der Vorderkante (16) bis mindestens zur Längsmittellinie reichende Flügelvorderteil (14, 18) in Form EMI2.2 EMI2.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT REQUIREMENT: Multi-wing propulsion screw, the wing of which has a pressure-side and suction-side curvature on the pressure-side and suction-side transverse curvature that merges into the axial direction, with the pitch angle decreasing towards the outer end and the rear edge running in a transverse axial plane, characterized in that the from the front edge (16) The wing front part (14, 18) in the form of at least the longitudinal center line EMI2.2 EMI2.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT137005D 1930-10-21 1930-10-21 Multi-wing propeller. AT137005B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT137005T 1930-10-21

Publications (1)

Publication Number Publication Date
AT137005B true AT137005B (en) 1934-04-10

Family

ID=3639498

Family Applications (1)

Application Number Title Priority Date Filing Date
AT137005D AT137005B (en) 1930-10-21 1930-10-21 Multi-wing propeller.

Country Status (1)

Country Link
AT (1) AT137005B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017114414B3 (en) 2017-06-28 2018-07-05 Hochschule Rhein-Waal Aerodynamic structure, method of making and using such

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017114414B3 (en) 2017-06-28 2018-07-05 Hochschule Rhein-Waal Aerodynamic structure, method of making and using such
EP3421783A1 (en) 2017-06-28 2019-01-02 Hochschule Rhein-Waal Aerodynamic structure

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