گروه خدمات فنی مهندسی رهگشافن

PropExpert is a software tool for the sizing and analysis of propellers for work boats and pleasure craft. It provides the tools needed for the proper selection of propulsion system components - engine, gear and propeller - and has been selected as the principal propeller sizing tool of many of the best known manufacturers and distributors of marine engines and propellers.
 

• Propeller sizing
• Optimum D, P, BAR
• Finds best gear ratio
• Propeller system analysis
• Proper material selection
• Existing performance analysis

• Propeller shops and vendors
• Propeller builders
• Engine and gear companies
• Boat builders and designers
• Marine surveyors
• Propulsion system consultants

• Inboard propellers
• From 450 to 2500 mm (18" to 100")
• Open props in flat-face and foil styles
• Kaplan ducted (nozzle) styles
• Supports high BAR and cupping

• Motor yachts
• Auxiliary-powered sailboats
• Tugs and trawlers
• Patrol and sport fishing boats
• Inland river craft

• Camber analysis - A performance correction is in development for the effect of camber (progressive pitch).
• Speed prediction - New speed prediction options are being developed to insure accurate prediction of real speed and power. Select from additional "Average hull" prediction methods to better reflect known performance for a particular vessel type, such as for long slender river boats.
• Additional vessel types - In addition to the standard "Displacement", "Planing" and other vessel types, a number of new types (e.g., Planing catamaran, Tug/barge) will allow for improved prediction of associated Vessel parameters and speed prediction.
• Prior trial correlation - Using an "overload test", PropExpert will be able to help correlate the analysis of a Prior trial to known values. This information will aid in describing the true performance of the boat as accurately as possible.

• New report viewer - A new integrated report viewer provides enhanced reporting options, including direct to PDF. (Legacy HTML reports are still supported.)
• Effect of shaft angle
• - High shaft angle can greatly affect a propeller"s thrust and torque. Avoid unexpected overload and peak cavitation surprises with a new "inclined flow" algorithm. 
• Blade scan analysis - Enter local pitch and chord length at a few radii as measured from a blade scanning device, and this utility will help you determine the propeller"s EAR and hydrodynamic mean pitch.
• New cupping analysis - A new prediction method for the effect of cupping was developed based on a re-analysis of cupped propeller data, and is now available in PropExpert.
• Cavitation analysis - An improved analysis for trans-cavitating propellers, such as for 3-bladed propellers under heavy load at high speed.
• Loading checks - Supplemental propeller Power Loading check to indicate potential cavitation and thrust breakdown before sizing.
• Supplemental calculations - Improved shaft diameter calculation. 
• Library data - New propeller models added to the library. 
• Speed validations - Additional speed prediction validation checks using predicted Transport Efficiency