NAMJet’s newest innovation is the RaptorJet series. NAMJet is introducing the RaptorJet series with the RJ431 waterjet. NAMJet has combined the proven performance of the TJ431HH and relocated the steering and reverse components inside the hull. The RaptorJet is offered in two configurations, electric actuation or traditional hydraulic actuation of steering and reverse.
The NAMJet RJ431e RaptorJet is operated by balanced, electric actuators controlling steering and reverse. THE RJ431e is designed to be operated by NAMJet’s iNAV Intelligent Navigation and Control system, eliminating the need for hydraulic pumps, oil tanks, filters and potential oil leaks.
For those customers preferring conventional hydraulic operation, we offer the NAMJet RJ431h RaptorJet, with the hydraulic actuators for steering and reverse located inside the hull, eliminating external environmental oil pollution concerns. The RJ431h is designed to integrate with the NAMJet iNAV Intelligent Navigation Control, however, it will also integrate with other control systems as well.
– No more hydraulic system / maintenance
– Smooth adjustable ramping
– Fast response, quiet operation
– Fingertip control of lateral movement
– Improved Efficiency
– Greater Speed Capability
– iNAV Inboard Electronics
– Full Actuation Redundancy
– Fast Response, Quiet Operation
Greater speeds and larger power plants to drive larger jets is not necessarily the best possible solution for wind farm operations. NAMJet’s studies have found that a quad waterjet solution has many advantages over larger twin waterjet operations. Quad waterjets provide full redundancy and with NAMJet’s higher thrust capability and iNAV system, it is possible to power cycle the jets to maximize fuel economy and reduce wear and tear while connected to a wind farm tower.
NAMJet’s higher thrust capability and little to zero cavitation provides wind farm crew transfer vessel with a much higher transfer limit window. This means the CTVs can stay engaged longer with the wind farm towers in greater sea state conditions.
Yes, depending on the application and the resistance curve of the vessel versus the performance requirement. Generally NAMJet’s waterjets operate more efficiently and can produce significantly higher thrust than high speed jets allowing for the use of small power plants on some occasions.
Our waterjets are a mass axial flow design which relies on the volume of water passing through the intake. The impeller rotates at a very low speed between 700 – 1150 rpms which is highly efficient in producing enormous thrust and little to no cavitation from idle up to 35 knots.
Hydraulic systems can very reliable if well maintained but they do have a slight delay in the command signals from the steering and bucket control system. The electric actuation system is instantaneous which allows for smooth, quiet ramping.
The 10m demonstration boat was built by Birdon America, Inc in Denver and will be based at a NAMJet facility in the UK and used for various exhibitions around Europe.
By eliminating hydraulics, operators will no longer need to be concerned with ongoing maintenance of a hydraulic system. There is less weight and more room on board as there are no longer hydraulic tanks, hoses, filters, pumps and valves. It is also eco-friendly in that it eliminates the potential for any oil leaks.