Brunvoll Equipment
Retractable Azimuth Combi Thruster
Brunvoll retractable azimuth combi thruster (AR 63–AR 115, 500–3,500 kW) that works as an azimuth thruster for positioning, track keeping and take-home, and as a tunnel thruster for port manoeuvring.
Description
The Brunvoll Retractable Azimuth Combi Thruster is a retractable azimuth thruster that can also operate as a conventional tunnel thruster: azimuth mode for positioning, track keeping and redundant take-home propulsion, tunnel mode for port manoeuvring. A vertical top-mounted electric motor provides direct power transmission, eliminating special shafts, quick-release couplings and gearboxes.
Design
- Column-shaped unit installed vertically in the thruster compartment
- Lowered into operating position and retracted into the hull by hydraulically operated lifting equipment
- When retracted, mechanically locked by spring-loaded locking devices; the hull opening is closed by a flush-plate attached to the bottom of the propeller nozzle
- In operating position the unit is locked and pre-loaded by the hydraulic lifting/lowering actuators; azimuth movement is locked by mechanical brakes when not turning
- Stem housing moves through a combined sealing box and bearing housing mounted to the tank top/sea chest integration plate
- Delivered pre-assembled (azimuth arrangement, retracting arrangement and guiding column) on the tank top/sea chest integration plate for easy installation
Underwater unit
- Replaceable propeller blade bearing liners
- Propeller blades replaceable inside the duct
- Various propeller blade materials and designs
- Controllable pitch and fixed pitch propeller versions
- Advanced multiple sealing system for the propeller shaft
- Non-polluting sealing solutions for Environmentally Acceptable Lubricants (EAL); limited amounts of EAL required
- Design complies with US EPA Vessel General Permit (VGP)
Technical data
| Model | Propeller diameter (mm) | Power range (kW) |
|---|---|---|
| AR 63 | 1 750 | 500 – 800 |
| AR 80 | 2 100 | 1 000 – 1 500 |
| AR 100 | 2 600 | 1 800 – 2 500 |
| AR 115 | 2 900 | 2 500 – 3 500 |
Other sizes on request.
Options
- Electric motor starting options: direct on-line (DOL), star-delta (approx. 60% lower in-rush current than DOL), auto-transformer (typically 50–70% motor voltage at start), electronic soft starter, or frequency converter (6-pulse, 12/24-pulse or Active Front End); motor started with propeller in zero pitch position
Applications
Research ships, coast guard vessels, offshore supply vessels and shuttle tankers, including North Atlantic operation.
Specifications
| MODEL | PROPELLER DIAMETER MM | POWER RANGE KW |
|---|---|---|
| AR 63 | 1 750 | 500 - 800 |
| AR 80 | 2 100 | 1 000 - 1500 |
| AR 100 | 2 600 | 1 800 - 2 500 |
| AR 115 | 2 900 | 2 500 - 3 500 |
| *Other sizes on request |
More from Brunvoll
- Brunvoll 2-speed Gearboxes
- Brunvoll Azimuth Thruster with Push Ducted Propellers
- Brunvoll BruCon Condition Monitoring System
- Brunvoll BruCon DP & Joystick Control Systems
- Brunvoll Controllable Pitch Propellers
- Brunvoll CRP Contra Rotating Propellers
- Brunvoll Electric & Hybrid Propulsion System Integration
- Brunvoll Electric Azimuth Propulsion
- Brunvoll Electric CP-Propeller and Gearbox Propulsion System
- Brunvoll Hybrid CPP Propulsion Systems
- Brunvoll LowNoise Tunnel Thrusters
- Brunvoll Medium Speed CPP & Gearbox Propulsion System
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