Abstract:
Die Erfindung betrifft eine Vorrichtung zur Verstellung der Neigung von Rotorblättern (9) eines Rotors, insbesondere Rotoren, Propellern oder Turbinen von Land-, Luft- oder Wasserfahrzeugen sowie stationären Turbinen- oder Gebläseanordnungen, umfassend - einen Hauptantrieb (2) mit einem Hauptrotor (3) der um eine Hauptachse (1) des Hauptrotors (3) angetrieben rotierbar angeordnet ist, - eine Anzahl von an dem Hauptrotor (3) im rechten Winkel zur Hauptachse (1) angeordneter, insbesondere gleichmäßig verteilten, Rotorblättern (9), die jeweils in einem Lager (6) um ihre jeweilige Blattachse (7) drehbar gelagert sind, wobei die Blattachse (7) jeweils rechtwinklig zur Hauptachse (1) angeordnet ist, - einen Steuerantrieb (4) mit dem die Neigung zumindest eines der Rotorblätter (9) in der jeweiligen Blattachse (7) über ein Steuerelement (5) verstellbar ist, wobei insbesondere der Steuerantrieb (4) koaxial zur Hauptachse (1) und/oder zum Hauptantrieb (2) angeordnet ist, wobei das Steuerelement (5) mit dem Hauptrotor (3) um die Hauptachse (1) mitrotierbar ist, dass das Steuerelement (5) derart ausgestaltet und angeordnet ist, dass durch den Steuerantrieb (4) zwischen dem Hauptrotor (3) und dem Steuerelement (5) ein aufgebrachtes Differenzdrehmoment um die Hauptachse (1) aufbringbar ist, sodass die Blattneigung zumindest eines der Rotorblätter (9) in der Blattachse (7) bei Anliegen eines Differenzdrehmoments zwischen dem Hauptantrieb (1) und dem Steuerantrieb (4) über das Steuerelement (5) verstellbar ist, und dass die Vorrichtung eine Steuer- und Regeleinheit (10) aufweist, mit der der Steuerantrieb (4) ansteuerbar ist und mittels der ein positives oder negatives Differenzdrehmoment zwischen dem Hauptantrieb (1) und dem Steuerantrieb (4) an dem Steuerantrieb (4) vorgebbar ist.
Abstract:
본 발명은, 유체 흐름 방향의 변화에 따라 날개의 받음각이 자동으로 조절되어 항상 최적의 효율을 갖는 기준 받음각 상태를 유지하는 받음각 자동 조절 날개를 제공하는 것이며, 날개의 하방쪽 특정 지점에 날개 회전의 기준이 되는 받음각 조절축을 구비하고, 유체 흐름 방향의 변화에 의하여 날개의 받음각이 기준 받음각에서 달라졌을 때, 날개가 상기 받음각 조절축을 중심으로 자동으로 회전하여 기준 받음각으로 자동으로 복귀하는 것이다. 본 발명은 위 구성으로 인해 날개의 받음각을 항상 최적 효율의 상태로 유지할 수 있기 때문에 공기력 활용의 효과가 매우 증대되고, 날개 또는 프로펠러를 이용하여 양력 또는 추력을 발생시켜서 작동하는 모든 장치에 적용이 가능하며 이들 장치의 효율이 상승되는 효과를 발휘한다.
Abstract:
The present disclosure pertains to self-piloted, electric vertical takeoff and landing (VTOL) aircraft that are safe, low-noise, and cost-effective to operate for cargo-carrying and passenger-carrying applications over relatively long ranges. A VTOL aircraft has a tandem- wing configuration with one or more propellers mounted on each wing to provide propeller redundancy, allowing sufficient propulsion and control to be maintained in the event of a failure of any of the propellers or other flight control devices. The arrangement also allows the propellers to be electrically-powered, yet capable of providing sufficient thrust with a relatively low blade speed, which helps to reduce noise. In addition, each wing is designed to tilt, thereby rotating the propellers, as the aircraft transitions between forward flight and hover flight. While in the hover flight, the propellers may be offset from vertical so that horizontal thrust components of the propellers may be used to provide efficient yaw control.
Abstract:
Procédé de pilotage d'un propulseur d'un véhicule marin (1) au moins partiellement immergé dans un liquide comprenant un corps (2) et un propulseur (3) comprenant deux hélices (AV, AR), chaque hélice comprenant des pales destinées à tourner autour d'un axe de rotation de ladite hélice, le procédé comprenant une étape de pilotage de manœuvre à basse vitesse, lors de laquelle on pilote le propulseur de façon que chaque hélice (AV, AR) génère un flux dirigé vers le flux généré par l'autre hélice et atteignant le flux généré par l'autre hélice.
Abstract translation:
处理程序; 驱动至少部分浸入水中的海上运载工具(1)的推进器 在包括主体(2)和包括两个加热器(AV,AR)的推进器(3)的液体中,每个堆包括用于使用的叶片 围绕所述主机的旋转轴线旋转的过程 包括操纵控制步骤> 低速,在此期间推进器被引导,以便每个驾驶员(AV,AR)产生定向流; 到主流o&rd; 由另一个主机并且达到通常的流程... ... ute ute et et et et et et et et et et et et et et et et et et et et et 由另一位客人。 p>
Abstract:
L'invention concerne un dispositif de propulsion et/ou de génération d'énergie (1) comprenant : - un hélice rotative; - un support annulaire (10); - des pales (20) comprenant une première extrémité formant une base et une deuxième extrémité formant un sommet, les pales étant montées pivotantes et libre en rotation sur la face intérieure du support annulaire au niveau de leur base, via une articulation agencée de manière à ce que les pales soient auto-ajustables
Abstract:
The present disclosure relates to a system and method for indicating a pitch angle of a variable marine propeller of a vessel. The pitch angle indication system (100) may comprise a first hydraulic cylinder (110) having a first inlet (116) configured to receive hydraulic fluid and a first outlet (118) configured to direct the hydraulic fluid out of the first hydraulic cylinder (110), a first piston (112) coupled to the at least one marine propeller blade and movable disposed within the first hydraulic cylinder (110), a first pressure detection device (138) configured to detect a first pressure upstream of the first inlet (116) and output a first pressure signal indicative of the first pressure, and a processing unit (160) connected to the first pressure detection device (138) and configured to, at least partially based on the first pressure signal, indicate the pitch angle of the at least one marine propeller blade (18, 22).
Abstract:
There is described a variable pitch propeller comprising one or more blades pivoted to the cylindrical propeller casing (3), a propeller hub assembly (10, 11) coupled to a propulsor and positioned coaxially inside the propeller casing, a kinematic mechanism for adjusting the rotary motion of the blades about their axis of pivoting to the propeller casing as a function of the relative motion of the propeller hub assembly with respect to the cylindrical propeller casing, and means (12, 15, 30, 31) for coupling in rotation the propeller hub assembly to the propeller casing, comprising at least one elastic element (8) interposed between the hub assembly and the propeller casing. The coupling means have at least one inoperative position i.e. a position in which motion is not transmitted from the hub assembly to the propeller casing, in which, between the hub assembly and the propeller casing, at least a first angular space (alpha) is present for counter-clockwise rotation of the hub assembly with respect to the propeller casing, or vice versa, and at least a second angular space (beta) is present for clockwise rotation of the hub assembly with respect to the propeller casing, or vice versa.
Abstract:
Mechanisch angetriebener nabenloser Schiffspropulsor mit hohem Wirkungsgrad, der zumindest einen Rotor mit Flügeln (10) in einem Ring aufweist, wobei der mit einem Zahnkranz ausgestattete Rotor mit der Schiffsmaschine über eine Welle (1) mit Ritzel (2) zur Übertragung einer Drehbewegung verbunden ist, und wobei der Rotor in einer Düse (8) angeordnet ist, und wobei rotierende Flügel (10) des Rotors einzeln winkelverstellbar ausgebildet sind und bei jeder Umdrehung eine ständige Anpassung ihrer Winkelstellung an die lokalen Strömungsbedingungen, insbesondere an die Zuströmbedingungen in der Düse (8 ), erlauben.
Abstract:
A toy aircraft that has concentric, counter-rotating upper and lower rotors. Each rotor is rotated by a corresponding drive shaft. The shafts are arranged concentrically with one another. A plane of reference is defined as a plane perpendicular to the shafts. Each rotor includes first and second pairs of rotor blades. Each rotor blade of the first pair has a proximal end with a first pitch being fixed with respect to the plane of reference, and a distal end with a second pitch being fixed with respect to a plane of rotation, the plane of rotation being defined by a path of travel of the distal end during rotation. Each rotor blade of the second pair has a proximal end with a first pitch being adjustable with respect to the plane of reference, and a distal end with a second pitch being adjustable with respect to the plane of reference.