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This spring, HydroComp is hosting weekly webinars to help our customers get the most out of their work from home experiences! View our recent webinars here!

Tunnel thrusters: function, sizing, and design

Tunnel thrusters are an invaluable asset for maneuvering and docking. But how do they really function? Did you know that inlet and discharge geometry can be as important as the thruster propeller itself for a successful installation? What about thruster noise? This half-hour webinar will introduce the hydrodynamic function of a tunnel thruster, as well as practices for sizing and design. Spend a few minutes with Don MacPherson to review the thrust-making capabilities of a tunnel thruster, techniques for inlet and tunnel design, and tips for the sizing and design of thruster propellers.
Thursday 25 June, 2020
Recording: https://www.anymeeting.com/337-706-573/EA51D882844B3E


Propeller repitching: Maybe, maybe not…

Did you know that the pitch of a propeller can be modified? This process – half art form, half science – provides us some flexibility for correcting performance problems or even re-using propellers with different engines and gears after repowering. Join Adam Kaplan for this half hour webinar, where we will discuss how to identify a required pitch change, the practical limitations for repitching a propeller blade, and the physical geometric changes that occur during a propeller repitching. This webinar is appropriate for propeller repair shops, propulsion equipment vendors, naval architects, and boat builders.
Thursday 18 June, 2020
Recording: https://www.anymeeting.com/408-090-393/EA51D984854F3A


Designer-guided hull form optimization

Vessel hull form drag is the principal system load that ultimately determines engine power, fuel consumption, and emissions, and we know that reducing this hydrodynamic “cost” is an important design objective. But is there a “best” hydrodynamic shape to achieve least drag? Probably. Can I use that shape? Probably not, since the other design objectives of hydrostatics and safety, structure and layout, even producibility and capital cost, typically have priority over considerations of speed and power. This half-hour webinar will review how “designer-guided hull form optimization” in NavCad helps point to the hull characteristics that offer drag reduction for a vessel design. Designers will then use this knowledge to optimize hull shapes that are compatible with their other design priorities. Spend a few minutes with Don MacPherson to review objectives, workflow, and a case study that used these techniques for substantial savings in fuel consumption and emissions.
Thursday 11 June, 2020
Recording: https://www.anymeeting.com/207-715-730/EA51DA84894639


Waterjets in NavCad

We all know that waterjets are a very effective propulsor for high speed craft. But how do we model waterjet performance for speed-power calculations? What is the influence of hull form on their ability to drive a craft? How are waterjets different from propellers for key operational scenarios, such as acceleration or getting over the planing “hump”?This half-hour webinar will review how waterjet performance is defined and applied in NavCad, as well as provide special insights from a jet builder’s perspective. Spend a few minutes with Don MacPherson and special guest Jan Skorczewski of Alamarin-Jet to review how to properly model a waterjet-driven craft and achieve best outcomes for your clients and customers.
Thursday 4 June, 2020
Recording:  https://www.anymeeting.com/982-150-001/EA51DB82824C38

 


Pushboats and propellers

Pushboats are the industrial workers of commerce, moving barges from place-to-place on rivers across the globe. And we appreciate their tireless transport of goods and cargo now more than ever. But what makes a pushboat different from a merchant ship or motor yacht? How do we use our propulsion design tools to ensure we give them the right propellers? This half-hour webinar will review some of the important characteristics of pushboat propellers, and illustrate how HydroComp’s propulsion design tools can be used for this application.
Thursday 28 May, 2020

Sea trials are how we document and validate that a vessel conforms to its expected performance. But we can also extract knowledge from a sea trial for design purposes. Do you focus on a particular vessel type or style? Would it be useful to identify specific hull performance characteristics for future projects? This half-hour webinar will review different ways to utilize and validate historical trial data for prediction of performance during new design. 
Thursday 14 May, 2020

We start May with a webinar focused on the interaction between propeller hydrodynamics and shafting calculations. Many naval architects and propulsion equipment professionals know the basics of shafting vibration and alignment calculations, but what about the way propeller hydrodynamics affect these calculations? This half-hour webinar will review the main types of shaft vibration on a ship’s driveline, and will introduce how to set up a numerical model of a driveline considering the propeller hydrodynamic parameters.
Thursday 7 May, 2020

Rated power and RPM will put an engine into a general category, but it does not tell the whole story about an engine’s power delivery. How do differences in engine power curve affect towing capability? Bollard pull? Or vessel acceleration over the planing hump? This half-hour webinar will review how a full engine power curve is needed to properly evaluate vessel performance in off-design and dynamic conditions.
Thursday 30 April, 2020

We all know that rudders are a vital piece of our vessel’s operational equipment. But what determines the best type of rudder to use? How do we ensure that the rudder and propeller function well together? Can we use analytical tools to optimize a design? This half-hour webinar will review practical aspects of rudder type and function, as well as describe techniques for a deeper analytical understanding of rudder performance. Spend a few minutes with Don MacPherson (HydroComp) and Adrian Sarasquete (VICUSdt) to review the practical and analytical aspects of rudder design.
Thursday 23 April, 2020

We all know about planing hull drag prediction and typical hull form parameters – such as deadrise, LCG, chine beam. But what about the longitudinal and transverse variation in deadrise? Or how catamaran forms affect planing predictions? What is the influence of propulsors on stern lift, trim, and resistance? This half-hour webinar will review how planing craft geometry is described in NavCad, as well as recent updates to its prediction models.
Thursday 16 April, 2020

Nozzles can be an incredibly valuable partner for a propeller. When used appropriately, these non-moving devices can supplement a propeller’s thrust for some applications – but not all. How can a non-moving device generate thrust? And what nozzle type is best for our application? This half-hour webinar will introduce the hydrodynamics of propeller nozzles and the implications of different nozzle styles.
Thursday 9 April, 2020

3D CAD models are the standard for communicating propeller design data. These are used in various forms for visualization, performance simulation, and manufacturing/machining operations. In this half-hour webinar, we will review the basic concepts for preparing propeller CAD models. This webinar is an excellent introduction for all marine engineers, researchers, and manufacturers working with propeller data, drawings, and CAD models.
Thursday 2 April, 2020

As we analyze or design a vessel, we use NavCad for hydrodynamic and propulsion system simulation. The Vessel-Propulsor-Drive system model is built upon predictions for the various component pieces of the system – resistance, propeller performance, hull-propulsor system integration. But how do we know that these predictions are accurate? What confidence can we have in the outcomes? This half-hour webinar will review how to use specific features and steps to ensure confidence in the system model and results.
Thursday 26 March, 2020