DE925540C - Screw propeller with flapping wing drive - Google Patents
Screw propeller with flapping wing driveInfo
- Publication number
- DE925540C DE925540C DEW6435A DEW0006435A DE925540C DE 925540 C DE925540 C DE 925540C DE W6435 A DEW6435 A DE W6435A DE W0006435 A DEW0006435 A DE W0006435A DE 925540 C DE925540 C DE 925540C
- Authority
- DE
- Germany
- Prior art keywords
- screw propeller
- swinging
- wings
- flapping wing
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/30—Propulsive elements directly acting on water of non-rotary type
- B63H1/36—Propulsive elements directly acting on water of non-rotary type swinging sideways, e.g. fishtail type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Es ist bekannt, einen Tragflügel dadurch unmittelbar anzutreiben, daß man ihn mit kleinen Ausschlägen um seine Anstellage pendeln läßt oder ihm einen starren oder elastischen Schlagflügel anfügt. Dies Prinzip soll nach der vorliegenden Erfindung auf alle oder einzelne Flügel eines Schraubenpropellers, z. B. eines größeren Lüfters, angewandt werden, um ihn anzutreiben.It is known to directly propel an airfoil by that one lets him or her commute around his position with small fluctuations rigid or elastic flapping wing. This principle is intended according to the present Invention on all or individual blades of a screw propeller, e.g. B. a larger one Fan, can be used to drive it.
Der Antrieb dieser Pendelbewegung geschieht am besten mit der Eigenfrequenz der pendelnden Masse und kann entweder mechanisch, z. B. aus der Nabe heraus, erfolgen, in der man dann z. B. eine Topfmagnetmembran oder einen Wagnerschen Hammer elektrisch betreibt, oder einfacher durch elastische Erregung nur mit Hilfe der Resonanz.This pendulum movement is best driven by the natural frequency the pendulum mass and can either be mechanical, e.g. B. out of the hub, in which you then z. B. a pot magnet membrane or a Wagner hammer electrically operates, or more simply by elastic excitation only with the help of resonance.
Die einfachste Ausführung besteht dann darin, daß die Schraubenflügel a mit der Nabe b aus einem Stück sind, aber nach der Abströmkante c zu, wie die eingezeichneten Querschnitte d zeigen, in elastische Lappen e auslaufen, die mit einer Eigenfrequenz (um die gestrichelt angedeutete Achse) schwingen können, die einer üblichen Wechselstromfrequenz entspricht, und daß am Stativ f des Lüfters oder wieder in der Nabe b des Schraubenpropellers ein Topfmagnet g mit Schwingmembran h mit Wechselstrom dieser Frequenz betrieben wird. Die Stromzuführung kann durch die Spitzen i erfolgen, zwischen denen die Nabe läuft.The simplest version is that the screw wings a are made of one piece with hub b, but towards the trailing edge c, like the The cross-sections d shown, expire in elastic flaps e, which are marked with a natural frequency (about the axis indicated by dashed lines) can oscillate, the corresponds to a normal alternating current frequency, and that on the stand f of the fan or again in the hub b of the screw propeller a pot magnet g with a vibrating membrane h is operated with alternating current of this frequency. The power supply can through the tips i take place, between which the hub runs.
Die Schwingung der Membran h überträgt sich dann ohne jeden Hebelmechanismus auf die Schwinglappen e der Flügel a, wodurch sich der Lüfter dreht und bläst. Anzahl der Flügel und Drehzahl bzw. Arbeitsbelastung können bei Befestigung des Topfmagneten am Stativ so gewählt werden, daß die Säulen, zwischen denen die Nabe gelagert ist, von den vorbeischlagenden Flügeln auch synchrone Schwingungsimpulse in der Antriebsfrequenz erfahren, wodurch der Wirkungsgrad dieser Antriebsart wächst.The vibration of the membrane h is then transmitted without any lever mechanism to the vibrating tabs e of the blades a, whereby the fan rotates and blows. The number of blades and speed or workload can be selected when the pot magnet is attached to the stand so that the columns between which the hub is mounted also experience synchronous oscillation pulses in the drive frequency from the blades passing by, which increases the efficiency of this type of drive.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW6435A DE925540C (en) | 1951-08-03 | 1951-08-03 | Screw propeller with flapping wing drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW6435A DE925540C (en) | 1951-08-03 | 1951-08-03 | Screw propeller with flapping wing drive |
Publications (1)
Publication Number | Publication Date |
---|---|
DE925540C true DE925540C (en) | 1955-03-24 |
Family
ID=7593143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW6435A Expired DE925540C (en) | 1951-08-03 | 1951-08-03 | Screw propeller with flapping wing drive |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE925540C (en) |
-
1951
- 1951-08-03 DE DEW6435A patent/DE925540C/en not_active Expired
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