US1861065A - Screw-propeller for flying machines and other aerodynamics apparatus - Google Patents
Screw-propeller for flying machines and other aerodynamics apparatus Download PDFInfo
- Publication number
- US1861065A US1861065A US545509A US54550931A US1861065A US 1861065 A US1861065 A US 1861065A US 545509 A US545509 A US 545509A US 54550931 A US54550931 A US 54550931A US 1861065 A US1861065 A US 1861065A
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- US
- United States
- Prior art keywords
- propeller
- screw
- aerodynamics
- flying machines
- wing
- 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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- 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
- My present invention relates to screw-pro- 5 pellers for flying machines and other aerodynamics apparatus and it has for its object to provide an improved screw-propeller of this type, that is one in which the wings are undulated or waved in. the plane parallel to the axis of the propeller as well as at right angles to said axis.
- a further object of my invention is to provide a screw-propeller of the type described, in which the axes of the wave troughs for the inner waves or undulations coincide with a circumference the center of which is located on the hub member of the propeller on the extension of the base line of the Wave troughs, whilst for the outer wave troughs the axes of 29 the troughs coincide with a circumference the centre of which is located on the extension of the front edge line of the propeller wing.
- Fig. 1 is a front elevation of a screw-propeller having two alined wings.
- Fig. 2 is a diagrammatica'l cross section thereof, showing the different pitches of the screw threads.
- my improved screw-propeller is constructed with two or more combined pitches.
- Each wing of the screw-propeller is limited on the side turned towards the wind by a straight line 1 el, whilst the rear edge 2-3 thereof is undulated or waved in the plane parallel to the axis 11 as well as at right angles thereto.
- the peaks or crests are designated by the numeral 2 and the troughs by the numeral 3.
- the wave troughs 3 are made of conical shape and the apexes thereof are turned towards the straight edge 1-4, that is towards the wind.
- the axes of these wave troughs correspond: for the inner waves or undulations to a circumference 6 the centre 9 of which is located on the cen- 545,509, and in Belgium August 18, 1930.
- section line l2 representwill be saved and on the other hand the energy driving the screw wings forwardly will be reduced.
- a screw-propeller for flying machines and other aerodynamics apparatus having a plurality of wings
- the combination with each wing body, of undulations or waves formed in said body parallel to the axis of the screw-propeller as well as at right angles thereto the axes of the inner wave troughs coinciding with a circumferencethe centre of which is located on the central portion or hub member of the screw-propeller on the extension of the base line of said troughs, Whilst the axes of the outer wave troughs coincide with a circumference the centre of which is located on the extension of the front straight edge line of the wing body, substantially as set forth.
Description
P. FOOT I May 31 1932.
SCREW PROPELLER FOR FLYING MACHINES AND OTHER AERODYNMIICS APPARATUS Filed June 19. 1931 Patented May 31, 1932 UNITED STATES PATENT OFFICE PHILIPPE PO01, OF SAVENTHEM, BELGIUM.
Application filed June 19, 1931, Serial No.
I have made foreign applications as fol-' lows: in Belgium, on August 18th, 1930, No. 37 2,767; in Germany, on April 20th, 1931.
My present invention relates to screw-pro- 5 pellers for flying machines and other aerodynamics apparatus and it has for its object to provide an improved screw-propeller of this type, that is one in which the wings are undulated or waved in. the plane parallel to the axis of the propeller as well as at right angles to said axis.
A further object of my invention is to provide a screw-propeller of the type described, in which the axes of the wave troughs for the inner waves or undulations coincide with a circumference the center of which is located on the hub member of the propeller on the extension of the base line of the Wave troughs, whilst for the outer wave troughs the axes of 29 the troughs coincide with a circumference the centre of which is located on the extension of the front edge line of the propeller wing.
Other objects and advantages of my invention will appear from the following disclosure taken in connection with the accompanying drawings showing by way of example one preferred embodiment of my invention and in which:
Fig. 1 is a front elevation of a screw-propeller having two alined wings.
Fig. 2 is a diagrammatica'l cross section thereof, showing the different pitches of the screw threads.
Referring more particularly to the drawings, my improved screw-propeller is constructed with two or more combined pitches. Each wing of the screw-propeller is limited on the side turned towards the wind by a straight line 1 el, whilst the rear edge 2-3 thereof is undulated or waved in the plane parallel to the axis 11 as well as at right angles thereto. The peaks or crests are designated by the numeral 2 and the troughs by the numeral 3. The wave troughs 3 are made of conical shape and the apexes thereof are turned towards the straight edge 1-4, that is towards the wind. The axes of these wave troughs correspond: for the inner waves or undulations to a circumference 6 the centre 9 of which is located on the cen- 545,509, and in Belgium August 18, 1930.
tral portion or hub member 7 of the screw propeller on the extension of the base line 8, and for the outer Wave troughs to a circun1- ference 5 the centre 10 of which'is located a on the extension of the. front wing edge a. Owing to this particular arrangement the vacuum in front of the propeller Wing will be highly increased, whereby an increase of the action of the pressure existing at the rear of the wing will be obtained.
Referring more particularly to Fig. 2 of the drawings, the section line l2, representwill be saved and on the other hand the energy driving the screw wings forwardly will be reduced.
Minor details of the construction described and shown may be changed or modified as desired without departing from the scope of my invention.
I claim:
In a screw-propeller for flying machines and other aerodynamics apparatus having a plurality of wings, the combination with each wing body, of undulations or waves formed in said body parallel to the axis of the screw-propeller as well as at right angles thereto, the axes of the inner wave troughs coinciding with a circumferencethe centre of which is located on the central portion or hub member of the screw-propeller on the extension of the base line of said troughs, Whilst the axes of the outer wave troughs coincide with a circumference the centre of which is located on the extension of the front straight edge line of the wing body, substantially as set forth.
PHILIPPE POOT.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE1861065X | 1930-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1861065A true US1861065A (en) | 1932-05-31 |
Family
ID=3895260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US545509A Expired - Lifetime US1861065A (en) | 1930-08-18 | 1931-06-19 | Screw-propeller for flying machines and other aerodynamics apparatus |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1861065A (en) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899128A (en) * | 1959-08-11 | Vaghi | ||
| US2962101A (en) * | 1958-02-12 | 1960-11-29 | Vaghi Joseph | Water screw propeller |
| US4089618A (en) * | 1974-07-02 | 1978-05-16 | Rotron Incorporated | Fan with noise reduction |
| US4108573A (en) * | 1977-01-26 | 1978-08-22 | Westinghouse Electric Corp. | Vibratory tuning of rotatable blades for elastic fluid machines |
| US4872484A (en) * | 1988-12-12 | 1989-10-10 | John Hickey | System for controlling the flow of a fluid medium relative to an object |
| US4886421A (en) * | 1984-01-09 | 1989-12-12 | Wind Feather, United Science Asc. | Wind turbine air foil |
| US4974633A (en) * | 1989-12-19 | 1990-12-04 | Hickey John J | System for controlling the flow of a fluid medium relative to an object |
| US5075564A (en) * | 1989-12-19 | 1991-12-24 | Hickey John J | Combined solar and wind powered generator with spiral surface pattern |
| US5254876A (en) * | 1992-05-28 | 1993-10-19 | Hickey John J | Combined solar and wind powered generator with spiral blades |
| US5463257A (en) * | 1993-11-23 | 1995-10-31 | Yea; Ton A. | Wind power machine |
| US20070234419A1 (en) * | 2006-03-28 | 2007-10-04 | Canon Kabushiki Kaisha | Image forming apparatus, control method thereof, system, program, and storage medium |
| DE102006044332B3 (en) * | 2006-09-19 | 2008-01-03 | Karl Stern | Rotor vane especially for underwater power station, has vibrator sheath arranged externally on vane and lying in the plane of the blade |
| DE102006044330B4 (en) * | 2006-09-19 | 2010-11-11 | Karl Stern | vane rotor |
| US20110142666A1 (en) * | 2010-11-15 | 2011-06-16 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US20110142665A1 (en) * | 2010-11-10 | 2011-06-16 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US20110223030A1 (en) * | 2010-12-16 | 2011-09-15 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8414261B2 (en) | 2011-05-31 | 2013-04-09 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8430638B2 (en) | 2011-12-19 | 2013-04-30 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8834127B2 (en) | 2011-09-09 | 2014-09-16 | General Electric Company | Extension for rotor blade in wind turbine |
| US9494134B2 (en) | 2013-11-20 | 2016-11-15 | General Electric Company | Noise reducing extension plate for rotor blade in wind turbine |
| EP2711558A3 (en) * | 2012-09-24 | 2017-12-13 | Samsung Electronics Co., Ltd | Propeller fan |
| US20180127086A1 (en) * | 2016-11-10 | 2018-05-10 | Coretronic Intelligent Robotics Corporation | Aerial Vehicle and Propeller Thereof |
| US10180125B2 (en) | 2015-04-20 | 2019-01-15 | General Electric Company | Airflow configuration for a wind turbine rotor blade |
| US10465652B2 (en) | 2017-01-26 | 2019-11-05 | General Electric Company | Vortex generators for wind turbine rotor blades having noise-reducing features |
| US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
| US20200277931A1 (en) * | 2015-12-17 | 2020-09-03 | Lm Wp Patent Holding A/S | Splitter plate arrangement for a serrated wind turbine blade |
| US10767623B2 (en) | 2018-04-13 | 2020-09-08 | General Electric Company | Serrated noise reducer for a wind turbine rotor blade |
-
1931
- 1931-06-19 US US545509A patent/US1861065A/en not_active Expired - Lifetime
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899128A (en) * | 1959-08-11 | Vaghi | ||
| US2962101A (en) * | 1958-02-12 | 1960-11-29 | Vaghi Joseph | Water screw propeller |
| US4089618A (en) * | 1974-07-02 | 1978-05-16 | Rotron Incorporated | Fan with noise reduction |
| US4108573A (en) * | 1977-01-26 | 1978-08-22 | Westinghouse Electric Corp. | Vibratory tuning of rotatable blades for elastic fluid machines |
| US4886421A (en) * | 1984-01-09 | 1989-12-12 | Wind Feather, United Science Asc. | Wind turbine air foil |
| US4872484A (en) * | 1988-12-12 | 1989-10-10 | John Hickey | System for controlling the flow of a fluid medium relative to an object |
| US4974633A (en) * | 1989-12-19 | 1990-12-04 | Hickey John J | System for controlling the flow of a fluid medium relative to an object |
| US5075564A (en) * | 1989-12-19 | 1991-12-24 | Hickey John J | Combined solar and wind powered generator with spiral surface pattern |
| US5254876A (en) * | 1992-05-28 | 1993-10-19 | Hickey John J | Combined solar and wind powered generator with spiral blades |
| US5463257A (en) * | 1993-11-23 | 1995-10-31 | Yea; Ton A. | Wind power machine |
| US20070234419A1 (en) * | 2006-03-28 | 2007-10-04 | Canon Kabushiki Kaisha | Image forming apparatus, control method thereof, system, program, and storage medium |
| DE102006044332B3 (en) * | 2006-09-19 | 2008-01-03 | Karl Stern | Rotor vane especially for underwater power station, has vibrator sheath arranged externally on vane and lying in the plane of the blade |
| DE102006044330B4 (en) * | 2006-09-19 | 2010-11-11 | Karl Stern | vane rotor |
| US20110142665A1 (en) * | 2010-11-10 | 2011-06-16 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US7976283B2 (en) * | 2010-11-10 | 2011-07-12 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8523515B2 (en) | 2010-11-15 | 2013-09-03 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US20110142666A1 (en) * | 2010-11-15 | 2011-06-16 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US20110223030A1 (en) * | 2010-12-16 | 2011-09-15 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8267657B2 (en) | 2010-12-16 | 2012-09-18 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8414261B2 (en) | 2011-05-31 | 2013-04-09 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| US8834127B2 (en) | 2011-09-09 | 2014-09-16 | General Electric Company | Extension for rotor blade in wind turbine |
| US8430638B2 (en) | 2011-12-19 | 2013-04-30 | General Electric Company | Noise reducer for rotor blade in wind turbine |
| EP2711558A3 (en) * | 2012-09-24 | 2017-12-13 | Samsung Electronics Co., Ltd | Propeller fan |
| US9494134B2 (en) | 2013-11-20 | 2016-11-15 | General Electric Company | Noise reducing extension plate for rotor blade in wind turbine |
| US10180125B2 (en) | 2015-04-20 | 2019-01-15 | General Electric Company | Airflow configuration for a wind turbine rotor blade |
| US20200277931A1 (en) * | 2015-12-17 | 2020-09-03 | Lm Wp Patent Holding A/S | Splitter plate arrangement for a serrated wind turbine blade |
| US11067057B2 (en) * | 2015-12-17 | 2021-07-20 | Lm Wp Patent Holding A/S | Splitter plate arrangement for a serrated wind turbine blade |
| US20180127086A1 (en) * | 2016-11-10 | 2018-05-10 | Coretronic Intelligent Robotics Corporation | Aerial Vehicle and Propeller Thereof |
| US10465652B2 (en) | 2017-01-26 | 2019-11-05 | General Electric Company | Vortex generators for wind turbine rotor blades having noise-reducing features |
| US10767623B2 (en) | 2018-04-13 | 2020-09-08 | General Electric Company | Serrated noise reducer for a wind turbine rotor blade |
| US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
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