The midsize waterjet is the most complete waterjet package available in the market. For engine powers of up to 4500 kW, Wärtsilä has developed a compact, lightweight and easy to install waterjet package. To reduce shipyard installation work and costs, the waterjet is pre-assembled on a skid for direct ‘weld-in’ or ‘bolt-in’ connection to the hull.
Part of the book series: Lecture Notes in Mechanical Engineering ( (LNME)) Waterjet technology can cut soft, brittle, fibrous and difficult to cut materials without producing any heat-affected zone. This paper presents a vast review on recent applications, developments and challenges in waterjet technology.
Waterjets can operate in shallow draft conditions and are more efficient at high speeds. Since there is no equipment below the vessel, waterjet-driven vessels are also safer for swimmers and marine life. Waterjet propulsion is often chosen instead of conventional propellers for vessels that require high speeds with low noise and vibration.
The waterjets are equipped with high performance pump impellers, designed for high power density and good cavitation performance. For each vessel, a dedicated inlet duct design is determined. This allows the vessel’s operational profile to be aligned with the optimum waterjet working point.
The characteristics of a waterjet make it a good propulsor for numerous applications. High speed vessels; waterjets have better propulsion efficiency at ship speeds over 25-30 knots. Shallow draft vessels; the integrated steering function provides benefits for rescue vessels, inshore passenger ferries, landing crafts & special work boats.
Modular and midsize waterjets for ships of any size When deciding on the right waterjet solution there are many variables to consider – from size, weight and power to efficiency, reliability, support and ease of integration. But this doesn’t mean that choosing a waterjet has to be a complicated process.
This book reports on new advances in the rapidly growing field of high-speed water jet technology and covers research, development and applications related to cutting, machining, repair of structures and buildings, cleaning, removal of coatings and layers, mining and abrasive materials
mounted on the inner shaft rotates anti-clockwise viewed from incoming flow direction. The device consists of two impellers that rotate in the counter directions. ome efforts have been performed on S various contra-rotating turbomachines.
Water Jet Sweden UK are the Waterjet Cutting Specialists. Our water jet cutting machines are built to order and made to last. We customise our proven technology with a range of 100+ machine configurations to build your waterjet cutting machine to your specific requirements. Call 01937 845499 to discuss your particular needs.
Waterjet cutting is extensively used in the food industry because of the sanitation and productivity advantages it offers. The USDA also approves its usage as the process does not contaminate the food with bacteria or other contaminants.. The waterjet executes precise cutting and portioning of small and large food items such as candies, …
The waterjet has many advantages over a propeller. The very high efficiency of the waterjet pumps offer higher speeds for the same power or substantially lower fuel consumption at a constant speed with less power. Waterjets also give the …
Water-jet technology for rock-breaking is dust-free, non-polluting, and highly efficient [1, 2] cause of these advantages, it is widely used in mining, tunnelling, and oil drilling [3,4,5,6].The pulsed water jet acts on the target in the form of a pulse, which can cause the rock to produce tensile, shear, and fatigue damage under a low jet pressure and form macrocracks …