Presentation on theme: "The idea for tunnel thrusters came up in the 70´s and wasnt worked over since…concept is outdated ! EXTURN has been invented by an experienced group of."— Presentation transcript:
The idea for tunnel thrusters came up in the 70´s and wasnt worked over since…concept is outdated ! EXTURN has been invented by an experienced group of sailors and designed by highly qualified engineers in 2003/2004. After extensive tests of the entire system and all components in a sophisticated test channel and on test boats, EXTURN has been released for sale in Marinno is the only thruster company with in-house testing environment. Constructional Benefits: sealed unit, fully protected drive components great installation/operation convenience no explosion risk maintenance-free Benchmarking results
Best performance – ideal leverage, no cavitations Lowest electricity consumption – approx. 50% Shortest and easiest installation – no hull destruction No waiting and drying time – mountable during season Least interior space requirements Longest run-time – motor cooled by seawater Min. 80 % less noise emission Competitive system costs – lowest installation/running costs Completely maintenance-free – no anode and spare part changes EXTURN tunnel pivot point
Performance Benefits Most forward to the bow, better leverage Short transverse channel Deeper under the water line No ventilation of the propeller Minimum 40 % more efficiency as comparable tunnel-systems Considerable shorter reaction time EXTURN tunnel pivot point
Hydrodynamic Design The hydrodynamic shape of EXTURN results in minimal drag, it is comparable with a folding propeller! Experienced regatta sailors couldnt measure speed loss using GPS. Mathematically EXTURN results in a maximum speed loss of 0.2 knots at 10 knots cruising speed. EXTURN creates less drag then tunnel thrusters – Why? The flow speed at the tunnel´s position is Minimum twice as fast as at the bottom of the hull with EXTURN (see cross section of hull). This results in at least the fourfold retention force for a tunnel thruster which slows down the boat significantly.
System components Relays E-BOX BatteriesEXTURN Joystick Remote control & Receiver
Installation Scheme 12 V
The Innovation with quality Components from and assembling in Germany, Switzerland and Austria. Endurance approved for more then 200 hours… …20 years – lifetime. Maintenance-free ! EXTURN housing Extreme robust, special coated Aluminium housing. Seawater-resistant and redox-free. 3-Blade-Vector-Propeller purpose-designed by Marinno to ensure highest efficiency. Adapter Made of hard rubber, optimizing the flow characteristics and ensuring tight and simple mounting. Electric motor Marinno-designed and special built motors guarantee out- standing performance. Up to 5 minutes nonstop operating time. Hollow shaft with cable routing made of steel with neopren and rubber fittings to seal connection and perform as suspension.
E-BOX EXTURN is only system which comes with an E-BOX at no extra charge : Operation of up to 3 controls Easy Plug & Play connections Automatic command among different controls Automatic shut down of the controls in case of inactivity (10 min.) Temperature monitoring of motor (flashing LED on control panel) Gear protection – delay of redirecting (left / right) Compatible to non-EXTURN control panels
Relays Even with the relays EXTURN relies on quality : Waterproof capsuled special relays (IP 65) Maximum function warranty (200 A continuous current) No malfunctioning – installation in any position possible Design prevents sticking of contacts even at continous use Extreme high durability
Electricity Consumption & Supply Lower power consumption (- 50 %) at higher performance Longer operating time with less battery capacity Minimum self-discharging even after long breaks DC/DC-Converter for simple charging of 24-V-batterybanks Unique battery protection system prevents discharging of batteries Compact battery dimensions – easy transportation 24-V-Batterybank
Controls Joystick with safety button On/Off switch to prevent unintentional operation Overheating indication by flashing LED No viscous shifter mechanism Child-proof lock Safety class IP 67
Controls Remote Control & Receiver On/Off switch to prevent unintentional operation Waterproof and Floatable Within a short time connectable (Plug & Play) Integrated bracket No interaction with other RC equipment Automatic switch off for battery protection (after 90 sec.)
Maintenance & Operation EXTURNtunnel-system Propeller after breakage Circuit breaker after overload Anodes Carbon brushes (motor) Various gaskets
Installations on Sailing Boats EXTURN as bow thruster for sailing boats EXTURN as stern thruster for sailing boats With regard to the hull shape and materials, there are no restrictions with EXTURN!
Installations on Power Boats EXTURN integral as bow thruster for power boats EXTURN vertical as stern thruster for power boats EXTURN extension and hut as stern thruster for power boats With regard to the hull shape and materials, there are no restrictions with EXTURN!
Product information - SIMPLEX Length: 550 mm Weight: 19,5 kg Lateral cut: 165 mm
Product information - DUPLEX Length: 980 mm Weight: 35 kg Lateral cut: 165 mm
Product information - COMPACT Length: 440 mm Weight: 12 kg Lateral cut: 165 mm