US1890120A - Propeller - Google Patents
Propeller Download PDFInfo
- Publication number
- US1890120A US1890120A US608982A US60898232A US1890120A US 1890120 A US1890120 A US 1890120A US 608982 A US608982 A US 608982A US 60898232 A US60898232 A US 60898232A US 1890120 A US1890120 A US 1890120A
- Authority
- US
- United States
- Prior art keywords
- propeller
- blade
- curved
- air
- curve
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
Definitions
- This invention relates to a propeller for aeroplanes and the like, the general object of the invention being to form the blades of the propeller in such a manner that the propeller will have greater lifting power and more pull, therefore enabling the plane to take off faster than planes provided with the ordinary propellers.
- Fig. 2 is a section on line 22 of ig. 1.
- Fig. 3 is a section on line 33 of Fig. 1.
- each blade is of substantially elongated oval shape in cross section as shown at 2 and the major portion of the blade, or the outer part thereof, is formed with a slightly curved front edge 4 and a curved rear edge 5, which is curved to a greater extent in an opposite direction from the curved part 4, and the curved part 5 is of greater length than the curved part 4 as shown in Fig. 1.
- Each blade is also formed with the openings 6.
- the curved blade of my propeller will give more power and a greater pull per revolution for size than will the straightbladed propeller because the air currents do not slide off without being fully used.
- curve 5 deflects the currents and causes them to go outward and upward thereby causing superior pulling and lifting power.
- the air will be inclined to be thrown upward and away from the fuselage causing less resistance and enabling higher speeds.
- the currents will slide ofl more easily on the forward part of the blade curve to the resultant outer curve 5, and also the holes 6 will lessen the resistance, by allowing the air to pass 1932.
- This curve 5 is better than the sharply inclined propeller, it has approximately the deflection on the air, but turns it off without slowing down the propeller and so operates at much higher speed.
- a propeller of the class described comprisng a hub and elongated blades having their mner ends attached to the hub, each blade having its forward and rear edges forming elongated arcs merging at the tip of the blade, the forward or cutting edge of the blade having a slightly forwardly curved portlon, extending from a point adjacent the tip to a point slightly beyond the transverse center of the blade, the rear edge of the blade being rearwardly curved to a greater extent than the forward edge, the ends of thls rear curved portion extending beyond the ends of the forwardly curved portion and each blade having openings therein permitting air to pass through the blade and being acted on by the curve at the rear edge thereof.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Dcc. 6, 1932. R, KUNGER 1,890,120
PROPELLER Filed May 3, 1932 Inventor flag 17k 123512702" 4 fl Home y Patented Dec. 6, 1932 UNITED STATES PATENT OFFICE PROIPELLER Application filed. May 3,
This invention relates to a propeller for aeroplanes and the like, the general object of the invention being to form the blades of the propeller in such a manner that the propeller will have greater lifting power and more pull, therefore enabling the plane to take off faster than planes provided with the ordinary propellers.
This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.
In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a face view of the pro eller.
Fig. 2 is a section on line 22 of ig. 1.
Fig. 3 is a section on line 33 of Fig. 1.
In this drawing, the numeral 1 indicates the hub of the propeller and the letter A in- 5 dicates the blades thereof. The inner partof each blade is of substantially elongated oval shape in cross section as shown at 2 and the major portion of the blade, or the outer part thereof, is formed with a slightly curved front edge 4 and a curved rear edge 5, which is curved to a greater extent in an opposite direction from the curved part 4, and the curved part 5 is of greater length than the curved part 4 as shown in Fig. 1.
Each blade is also formed with the openings 6. The curved blade of my propeller will give more power and a greater pull per revolution for size than will the straightbladed propeller because the air currents do not slide off without being fully used. The
curve 5 deflects the currents and causes them to go outward and upward thereby causing superior pulling and lifting power. The air will be inclined to be thrown upward and away from the fuselage causing less resistance and enabling higher speeds. The currents will slide ofl more easily on the forward part of the blade curve to the resultant outer curve 5, and also the holes 6 will lessen the resistance, by allowing the air to pass 1932. Serial No. 608,982.
through and this air helps toward more power, because it is caught up by the curved edge 5 and utilized.
The slight curve on the cutting edge 4 pulls more air in, causing the maximum amount of air to be used. It will turn at approximately the revolutions the straight blades will, and has the added pull due to the deflection of the air.
This curve 5 is better than the sharply inclined propeller, it has approximately the deflection on the air, but turns it off without slowing down the propeller and so operates at much higher speed.
It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.
It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.
Having thus described my invention, what I claim as new is A propeller of the class described comprisng a hub and elongated blades having their mner ends attached to the hub, each blade having its forward and rear edges forming elongated arcs merging at the tip of the blade, the forward or cutting edge of the blade having a slightly forwardly curved portlon, extending from a point adjacent the tip to a point slightly beyond the transverse center of the blade, the rear edge of the blade being rearwardly curved to a greater extent than the forward edge, the ends of thls rear curved portion extending beyond the ends of the forwardly curved portion and each blade having openings therein permitting air to pass through the blade and being acted on by the curve at the rear edge thereof. In testimony whereof I afiix my signature.
RALPH IG'JINGER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US608982A US1890120A (en) | 1932-05-03 | 1932-05-03 | Propeller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US608982A US1890120A (en) | 1932-05-03 | 1932-05-03 | Propeller |
Publications (1)
Publication Number | Publication Date |
---|---|
US1890120A true US1890120A (en) | 1932-12-06 |
Family
ID=24438889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US608982A Expired - Lifetime US1890120A (en) | 1932-05-03 | 1932-05-03 | Propeller |
Country Status (1)
Country | Link |
---|---|
US (1) | US1890120A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3044559A (en) * | 1959-07-14 | 1962-07-17 | Chajmik Joseph | Propeller |
US4714408A (en) * | 1985-06-06 | 1987-12-22 | Nissan Motor Co., Ltd. | Radiator fan |
EP0975516A1 (en) * | 1997-04-14 | 2000-02-02 | Chi Keung Leung | Improved fluid displacing blade |
US20020168266A1 (en) * | 1999-05-21 | 2002-11-14 | David Reinfeld | Vortex attractor without a backplate |
US20060133930A1 (en) * | 2004-12-21 | 2006-06-22 | Aggarwala Andrew S | Turbine engine guide vane and arrays thereof |
EP2316729B1 (en) * | 2005-07-13 | 2015-03-11 | Jarilo Limited | An element for generating a fluid dynamic force |
-
1932
- 1932-05-03 US US608982A patent/US1890120A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3044559A (en) * | 1959-07-14 | 1962-07-17 | Chajmik Joseph | Propeller |
US4714408A (en) * | 1985-06-06 | 1987-12-22 | Nissan Motor Co., Ltd. | Radiator fan |
EP0975516A1 (en) * | 1997-04-14 | 2000-02-02 | Chi Keung Leung | Improved fluid displacing blade |
EP0975516A4 (en) * | 1997-04-14 | 2002-06-12 | Chi Keung Leung | Improved fluid displacing blade |
US20020168266A1 (en) * | 1999-05-21 | 2002-11-14 | David Reinfeld | Vortex attractor without a backplate |
US20020182077A1 (en) * | 1999-05-21 | 2002-12-05 | David Reinfeld | Vortex attractor with propellers |
US6960063B2 (en) * | 1999-05-21 | 2005-11-01 | Vortexhc, Llc | Vortex attractor without a backplate |
US20060133930A1 (en) * | 2004-12-21 | 2006-06-22 | Aggarwala Andrew S | Turbine engine guide vane and arrays thereof |
US7195456B2 (en) | 2004-12-21 | 2007-03-27 | United Technologies Corporation | Turbine engine guide vane and arrays thereof |
EP2316729B1 (en) * | 2005-07-13 | 2015-03-11 | Jarilo Limited | An element for generating a fluid dynamic force |
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