US2106928A - Air or water craft propulsion - Google Patents

Air or water craft propulsion Download PDF

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Publication number
US2106928A
US2106928A US151189A US15118937A US2106928A US 2106928 A US2106928 A US 2106928A US 151189 A US151189 A US 151189A US 15118937 A US15118937 A US 15118937A US 2106928 A US2106928 A US 2106928A
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air
propeller
blades
craft
end
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US151189A
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Charles M Lee
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Charles M Lee
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/005Spiral-shaped propellers

Description

Feb. 1, 1938. c. M. LEE

AIR OR WATER CRAFT PROPULSION I Filed June 50, 1957 Patented Feb. 1, 1938 UNITED STATES PATENT OFFICE Application June 30',

4 Claims.

The propeller construction herein disclosed is made for the purpose of driving air or water craft by means of static pressure of the sustaining medium in back of the craft. It thus, with airplanes, has the function of removing air from in advance of the driven object rather than driving the craft by a screw action through the air, which latter is the common practice of this day. In water it does not waste work in the manner of screw propulsion by building bow waves through sheer pressure.

A purpose of the invention is to decisively increase the speed of air craft or water craft over that which may be had by screw propulsion methods now in general use. A further purpose of the invention is to provide a propeller blade arrangement whereby the differences in pressures on opposite sides of rotating blades counteract centrifugal force and enable the use of a lighter 20. construction relative to the work performed than may be had by radial blades. In this case the blades are longitudinal or extend in the direction of flight, have a double curvature, and afford a highly streamlined propulsion means. With reference to this double curvature a further object of the invention is to strengthen the structure to resist centrifugal force and to give the blades a long leading edge and a large area with reference to the over all dimensions.

Another object of the invention is to provide a blunt nosed air craft giving a substantial effective area, athwart the direction of travel, with means for removing air from in advance of the blunt surface; thus making use of the static pres- 35 sure of air on other parts of the craft for driving it forward.

The purposes of the invention are accomplished by means of a construction diagrammed in the drawing to accentuate its principles without undue use of variable details.

In the drawing, Fig. 1 is a plan View of the propeller and its mounting and includes a fragment of a plane with the motor location in the fuselage indicated.

Fig. 2 is a perspective view of the propeller removed from its bearings.

Fig. 3 is a sectional view as indicated by the line: 3-3 on Fig. 1.

Fig. 4 is a fragmentary view of a modified end construction for the propeller.

This propeller construction is in the general form of a cylinder, except that the blades are given about a ten degree pitch with reference to tangents of the encompassing curve. The structure has an open front and a closed rear end 1937, Serial No. 151,189

and operates to draw air inwardly through the open front end and to drive the air outwardly through the spaces between the blades leaving a. Partial vacuum in advance of the closed end of the cylinder. This closed end forms a blunt nose for the bow of the craft and is shielded against inflow of air by a cylindrical reinforcing flange at its periphery. The blades preferably do not extend parallel with the axis of the cylinder in one sense, but have helical curves which add to the resistance of the structure against centrifugal force; increase the area of the blades, and increase the length of the effective air entering edge of the blades.

The propeller rotates in the direction indicated by the arrow in Fig. 2, and the outer face of each blade I 5 is the working face and the for- Ward edges of the blades are nearer the axis of rotation than the trailing edges for the purpose of throwing the liquid outward and rearward, and in this manner bring about the reaction that drives the craft forwardly.

The pitch of the blades with reference to the general cylindrical form is varied according to a predetermined diameter and its average rate of rotation, but for maximum efficiency in high speed work the pitch is in the neighborhood of ten or eleven degrees to avoid any approach to destructive vibration at high speeds. Proportions are varied according to the work performed, and load, with reference to maximum dimensions.

In the example illustrated the cylinder length is approximately three times its diameter. Many variants in construction or proportions are possible without departing from the main purposes or principles of the invention. Ordinarily with the use of screw propellers an increase in thrust of the propeller may be desired to increase the speed of the plane when overloaded and this is accomplished by pitch changing or by substituting a propeller of greater pitch. With the present suction producing propulsion means a greater thrust may be attained for the purposes of increasing speed by substituting a propeller of larger diameter and greater length without change in pitch.

The drawing indicates a rigid frame structure I providing bearings 2 and 3 for the propeller. The propeller shaft 4 is coupled with the crank shaft of a radial engine indicated by the dotted outline 5. 6 represents the fuselage of a plane and l the supporting wings thereof. The propeller construction rigid on shaft 4 includes the hubs 8, 9, and II) respectively connected with the cylindrical air evacuating means by spokes l l and I2, and a disc web I3. Spokes II at their outer ends are attached to an open ring M. The outer ends of spokes I2 are secured to the central part of the blades I 5 extending from ring M to a peripheral flange IS on web I 3.

Web 13 is shown extending at right angles to the axis of shaft 4 to afford a decisive illustration of an effective area in advance of which air is removed to cause the propulsion of the craft. In some cases this web is of conical form as indicated at I! in Fig. 4, thatis, insteadof extending from hub ID to the ring-shaped iiange l6, it forms a continuation of that flange and extends to the hub 9. Such cone form is illustrated because it has been used effectively and ispreferred in cases where the propeller is sometimes stationary while the craft is in flight, or in the case of sailing vessels equipped with an auxiliary.

In the operation of the propulsion means the effect of the rotating longitudinal blades is to throw the air'or water, through which the craft is traveling outwardly from'within the hollow cylindrical propeller. The blades also produce a rearward thrust on the air or water, because of their helical arrangement. The rear end of the propeller is closed or that space is otherwise blanked off'by the body of the craft when the propeller is mounted at the back end thereof. Due to the vacuum conditions produced within the cylinder, the air or water attains velocity in the direction of the axis of the cylinder, but is thrown outward, the result being a rearward flow outside of the periphery of the propeller in the general direction which would be caused by the operation of a screw propeller. Hence this flow of the air, in the case of an air craft, aids in producing a lift at the supporting surfaces supplemental to the lift caused by the forward movement of the plane through the air.

This method of propulsion provides a vacuum tube system operation in the open. With it the around the cylinder.

2. A propeller of the class described of general hollow cylindrical form and including end supports connected by pitched helical peripheral blades having their working faces on the outside and with their forward edges nearer theaxis of rotation than the rear edges, and closing means for one end of the propeller extending from the axis to the periphery of the cylinder.

3.-A propeller of the class described of general hollow cylindrical form and including end supports connected by pitched helical peripheral blades having their working faces on the outside and with their forward edges nearer the axis of rotation than the rear edges, a conical closing end means for one end of the propeller extending from the axis to the periphery of the cylinder.

4. A propeller of the class described of general hollow cylindrical form and including end supports connected by pitched helical peripheral blades having their working faces on the outside and with their forward edges nearer the axis of rotation than the rear edges, a closing end means for one end of the propeller extending from the axis to the periphery of the cylinder, and a peripheral flange or guard associated with said end closing means for preventing inward flow of air at that end of the propeller.

CHARLES M. LEE.

US151189A 1937-06-30 1937-06-30 Air or water craft propulsion Expired - Lifetime US2106928A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449531A (en) * 1942-06-02 1948-09-14 Lee Nixon Impeller
US3924966A (en) * 1974-09-25 1975-12-09 Robert J Taminini Wind driven power generator
US4130378A (en) * 1975-05-26 1978-12-19 Horst Eichler Side propellers for the propulsion of fast boats and aircraft
US6036443A (en) * 1994-01-11 2000-03-14 Northeastern University Helical turbine assembly operable under multidirectional gas and water flow for power and propulsion systems
US6201315B1 (en) * 1998-09-30 2001-03-13 Olle Larsson Construktion Ab Wind power motor
US20050106023A1 (en) * 2003-11-18 2005-05-19 Gck, Inc. Method of making complex twisted blades with hollow airfoil cross section and the turbines based on such
US20050201855A1 (en) * 2004-03-09 2005-09-15 Leon Fan Wind powered turbine in a tunnel
US20050249604A1 (en) * 2004-05-07 2005-11-10 Delta Electronics, Inc. Fan
WO2007111532A1 (en) * 2006-03-28 2007-10-04 Zakrytoe Aktzionernoe Obshcestvo 'aviastroitel'naya Korporatziya 'rusich' Shpadi propeller (variants) and the involute of the blades thereof
US20090175730A1 (en) * 2004-05-07 2009-07-09 Delta Electronics Inc. Fan and impeller
US20090309365A1 (en) * 2006-10-20 2009-12-17 Sauer Christopher R Submersible turbine-generator unit for ocean and tidal currents
US20100072752A1 (en) * 2006-11-28 2010-03-25 Korea Ocean Research And Development Institute Power generation system using helical turbine
US20100140947A1 (en) * 2009-03-30 2010-06-10 Mcentee Jarlath High efficiency turbine and method of generating power
US20120068467A1 (en) * 2007-02-13 2012-03-22 Ken Morgan Wind-driven electricity generation device with segmented rotor
US20120201687A1 (en) * 2009-09-18 2012-08-09 Urban Green Energy, Inc. Vertical axis wind turbine blade and its wind rotor
US8393853B2 (en) 2007-11-19 2013-03-12 Ocean Renewable Power Company, Llc High efficiency turbine and method of generating power
US20130183164A1 (en) * 2010-09-29 2013-07-18 Nenuphar Vertical axis wind turbine having one or more modular blades
US20140161615A1 (en) * 2012-12-07 2014-06-12 Richard Hayman Water Turbine Propeller
US9103321B1 (en) * 2012-09-13 2015-08-11 Jaime Mlguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonomous battlefield robot recharging and forward operating base horizontal axis wind turbine
US9528498B2 (en) 2012-09-13 2016-12-27 Jaime Miguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonoous battlefield robot recharging and forward operating base horizontal axis wind turbine
RU2670854C1 (en) * 2017-11-24 2018-10-25 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") Vertical rotor of wind and water engine

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449531A (en) * 1942-06-02 1948-09-14 Lee Nixon Impeller
US3924966A (en) * 1974-09-25 1975-12-09 Robert J Taminini Wind driven power generator
US4130378A (en) * 1975-05-26 1978-12-19 Horst Eichler Side propellers for the propulsion of fast boats and aircraft
US6036443A (en) * 1994-01-11 2000-03-14 Northeastern University Helical turbine assembly operable under multidirectional gas and water flow for power and propulsion systems
US6293835B2 (en) 1994-01-11 2001-09-25 Northeastern University System for providing wind propulsion of a marine vessel using a helical turbine assembly
US6201315B1 (en) * 1998-09-30 2001-03-13 Olle Larsson Construktion Ab Wind power motor
US20050106023A1 (en) * 2003-11-18 2005-05-19 Gck, Inc. Method of making complex twisted blades with hollow airfoil cross section and the turbines based on such
US7156609B2 (en) * 2003-11-18 2007-01-02 Gck, Inc. Method of making complex twisted blades with hollow airfoil cross section and the turbines based on such
US6981839B2 (en) 2004-03-09 2006-01-03 Leon Fan Wind powered turbine in a tunnel
US20050201855A1 (en) * 2004-03-09 2005-09-15 Leon Fan Wind powered turbine in a tunnel
US20050249604A1 (en) * 2004-05-07 2005-11-10 Delta Electronics, Inc. Fan
US20090175730A1 (en) * 2004-05-07 2009-07-09 Delta Electronics Inc. Fan and impeller
US8202055B2 (en) 2004-05-07 2012-06-19 Delta Electronics, Inc. Fan and impeller
WO2007111532A1 (en) * 2006-03-28 2007-10-04 Zakrytoe Aktzionernoe Obshcestvo 'aviastroitel'naya Korporatziya 'rusich' Shpadi propeller (variants) and the involute of the blades thereof
US20090309365A1 (en) * 2006-10-20 2009-12-17 Sauer Christopher R Submersible turbine-generator unit for ocean and tidal currents
US7902687B2 (en) 2006-10-20 2011-03-08 Ocean Renewable Power Company, Llc Submersible turbine-generator unit for ocean and tidal currents
US20100072752A1 (en) * 2006-11-28 2010-03-25 Korea Ocean Research And Development Institute Power generation system using helical turbine
US8308424B2 (en) * 2006-11-28 2012-11-13 Korea Ocean Research And Development Institute Power generation system using helical turbine
US20120068467A1 (en) * 2007-02-13 2012-03-22 Ken Morgan Wind-driven electricity generation device with segmented rotor
US8779616B2 (en) * 2007-02-13 2014-07-15 Ken Morgan Wind-driven electricity generation device with segmented rotor
US8393853B2 (en) 2007-11-19 2013-03-12 Ocean Renewable Power Company, Llc High efficiency turbine and method of generating power
US8096750B2 (en) 2009-03-30 2012-01-17 Ocean Renewable Power Company, Llc High efficiency turbine and method of generating power
US20100140947A1 (en) * 2009-03-30 2010-06-10 Mcentee Jarlath High efficiency turbine and method of generating power
US20120201687A1 (en) * 2009-09-18 2012-08-09 Urban Green Energy, Inc. Vertical axis wind turbine blade and its wind rotor
US9243611B2 (en) * 2009-09-18 2016-01-26 Hanjun Song Vertical axis wind turbine blade and its wind rotor
US20130183164A1 (en) * 2010-09-29 2013-07-18 Nenuphar Vertical axis wind turbine having one or more modular blades
US9528498B2 (en) 2012-09-13 2016-12-27 Jaime Miguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonoous battlefield robot recharging and forward operating base horizontal axis wind turbine
US9103321B1 (en) * 2012-09-13 2015-08-11 Jaime Mlguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonomous battlefield robot recharging and forward operating base horizontal axis wind turbine
US20140161615A1 (en) * 2012-12-07 2014-06-12 Richard Hayman Water Turbine Propeller
US10099761B2 (en) * 2012-12-07 2018-10-16 Richard Hayman Water turbine propeller
RU2670854C1 (en) * 2017-11-24 2018-10-25 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") Vertical rotor of wind and water engine
RU2670854C9 (en) * 2017-11-24 2018-11-30 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") Vertical rotor of wind and water engine

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