DE4019935A1 - Rudder with three separate control surfaces - are interconnected by pivoted links, and when actuated rotate abut parallel vertical axes - Google Patents

Abstract

The rudder has three separate control surfaces (1, 2, 3). The three control surfaces are controlled by a single rudder shaft but are interconnected by pivoted links. When actuated, the three surfaces rotate about parallel vertical axes and at the same time separate one from another. Gaps appear between the separate surfaces, and the slip stream flows through these gaps with a consequent reduction in the water resistance to the vessel. USE - Can be used both on ocean-going vessels and on vessels used in inland navigation.

Description

This registration is based on the idea of maneuvering ability and degree of propulsion on ships improve.

The concept described below should enable the rudder surface, with comparable or better Effectiveness to reduce significantly. Resistance and the forces at the rudder should be reduced become the degree of propulsion.

An improvement in the flow conditions on Aft ship can be reached by looking at the big one Take single rudder from the propeller jet and through two much smaller, located on the side of the propeller, but replaced highly effective oars.

Until now, this was only with loss of rudder effectiveness possible because the conventional oars, with some off (active rudders, for example), essentially their effectiveness derive from the laws of the impulse theorem and so they rely on the propeller jet.

Especially with ocean-going ships, it is a disadvantage that the large rudder blade in the main stream for long crossings of the propeller and there are detectable faults in the Discharge behavior. It is also a Fact that the ones carried out during the cruise Course corrections by the lying in the propeller steel Rudder, represent measurable losses. (This goes so far that with poorly adjusted control systems, the Rowing activity on fluctuating exhaust gas temperature Main machine (s) noticeable.) The argument of the expected additional costs for the second rudder system, I would like to note invalidate that the design and cost at an asymmetrical rear is much higher. The advantages the better flow due to the guiding effect by the one lying in the twisting propeller jet Rudder blade reduced again.  

In contrast to conventional rowing machines the rudder presented here is effective mainly according to the laws of wing theory.

According to the invention, this is a positively controlled 3-surface rudder for sea and Inland navigation vessels of all kinds. The articulation of this, from three individual rudder surfaces existing system takes place, such as previously common, via a rudder stock. Through the Twisting of the elements fixed on the rudder shaft, the front and rear surfaces positively controlled.

The size of the rudder blades is different, from the front falling backwards. Are different when actuated Rudder also the angle of attack, measured for Longitudinal axis of the ship. So the front surface has the smallest angle of attack, it lies on the propeller jet next. The rear, smallest area has the largest Angle of attack.

The rudder surfaces are so "fanned out" that the 2nd and 3rd area each in the pressure zone of the surface in front of it. According to the wing theory can significantly improve this arrangement the lateral thrust can be achieved. Even with hard ones Rudder positions this effect remains longer because of the arrangement of the surfaces tearing off the flow is prevented for a long time. The rudder effect therefore remains comparatively, at much lower speeds and without running propeller, preserved longer.

As additional help can be used for maneuvering in the port (with the ship almost standing still) a differentiated one Rudder controls are provided.

The rudder is articulated in the usual way the rudder stock. With this is the middle rudder blade (Part 2) and the guide yoke (part 4) for the front Rudder blade firmly connected. Through one behind the Rudder posture, eccentric forced steering (Part 5) the rear rudder blade (part 3) is opposite the second rudder blade more articulated. Through a Connecting yoke (part 6) around the rudder shaft the front rudder blade (part 1) also steered, however, the angle of attack is reduced here.

The articulation forces of the two rudder surfaces (part 1 and 3) are opposite and support each other. With in other words: the twisting of the front rudder blade is supported by the current, these forces in turn support, through the connecting yoke (part 6), the Articulation of the rear rudder blade.

The changes in length that the connecting yoke (part 6) subject to twisting, one becomes dependent on Rudder size and stress from sliding elements or catch through elongated holes.

Claims (6)

1. Highly effective 3-surface rudder, suitable for controlling all types of water tools, is characterized in that the rudder consists of 3 surfaces. 2. Highly effective 3-surface rudder according to claim 1, is characterized in that the areas responsible for the rowing effect separate from each other when twisted or actuated, however in the sense of the effect a coordinated one Form a system. 3. Highly effective 3-surface rudder according to claim 1, is characterized in that the control or the operation as in conventional rowing, done by only one rudder post. 4. Highly effective 3-surface rudder according to claim 1, is characterized in that if the rudder shaft is twisted, a forced link for 2 areas. 5. Highly effective 3-surface rudder according to claim 1, is characterized in that depending on the direction of flow, one of the zwangsge steered surfaces that supported the articulation of others. 6. Highly effective 3-surface rudder according to claim 1, is characterized in that when driving ahead of the watercraft, one after the other switched surface system arises, each of which, in Direction of travel, subsequent area in the night current, or the pressure zone of the front surface.