DE925540C - Screw propeller with flapping wing drive - Google Patents

Screw propeller with flapping wing drive

Info

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
Application number
DEW6435A
Other languages
German (de)
Inventor
Hans Dipl-Ing Wiegmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEW6435A priority Critical patent/DE925540C/en
Application granted granted Critical
Publication of DE925540C publication Critical patent/DE925540C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/30Propulsive elements directly acting on water of non-rotary type
    • B63H1/36Propulsive 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)

PATENTANSPRÜCHE: I. Schraubenpropeller, dadurch gekennzeichnet, daß er durch Schwingbewegungen seiner Flügel oder von schwingenden Schlagflügeln oder Schwinglappen angetrieben wird, die an seine Schraubenflügel angelenkt sind. PATENT CLAIMS: I. Screw propeller, characterized in that it is driven by oscillating movements of its wings or by oscillating flapping wings or swinging tabs which are hinged to its screw wings. 2. Schraubenpropeller nach Anspruch i, dadurch gekennzeichnet, daß die antreibenden Schwingbewegungen seiner Flügel oder der Schwinglappen durch Resonanz erzeugt werden von einer elektrisch erregten Schwingmembran oder von einem Wagnerschen Hammer oder auch von einer umlaufenden Unwucht, die in seiner Nabe oder an seinem Stativ angebracht sind. 2. Screw propeller according to claim i, characterized in that the driving Swinging movements of its wings or the swinging lobes are generated by resonance from an electrically excited vibrating membrane or from a Wagner hammer or also from a circumferential imbalance that is attached to its hub or to its tripod are. 3. Schraubenpropeller nach Anspruch i und 2, dadurch gekennzeichnet, daß die Zentrifugalkräfte zweier gegenüberliegenden, schwingenden Flügel von einer radial durchgehenden Speiche aufgenommen werden, die gleichzeitig bei der Schwingbewegung als Torsionsfeder mitwirkt.3. Screw propeller according to claim i and 2, characterized in that the Centrifugal forces of two opposing, swinging blades from one radial continuous spoke can be added simultaneously with the swinging movement acts as a torsion spring.
DEW6435A 1951-08-03 1951-08-03 Screw propeller with flapping wing drive Expired DE925540C (en)

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)

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