HexJet Propulsion Hub

Open-source DPV 3D engineering design files in PDF, SVG, and DXF formats across up to 5 sheets provide builders direct access to technical drawings for custom propulsion projects.

Cave diving DPVs demand aluminium or carbon-fibre builds, 100m+ ratings, and full field serviceability—plastic units fail overhead environments.

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William Hamilton's pioneering work in New Zealand established waterjet propulsion, later adopted across jet boats, military craft, and performance boats.

• Electric water jet propulsion enables near-silent running and sharply lower thermal signature versus diesel props, suiting covert shoreline ops.
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Research on hydrodynamic mechanisms and performance optimization delivers direct guidance for high-efficiency underwater propulsors. This informs design refinements in compact waterjets and ducted props for personal DPVs and scooters.

A hydrogen fuel cell-powered drone submarine prototype for the US Navy is designed to travel up to 3,100 miles underwater and stay submerged for 38...

IMASH RAS has patented a new propulsor for underwater vehicles, autonomous robots, and surface vessels, explicitly unlike classic jet engines and...

This open-source DPV delivers ~1.5 m/s speeds in an 8 lb package using dual T500 thrusters and a folded aluminum frame that costs under $100.

• Frame...

• Venturi-assisted design: Inner nozzle thrust creates suction in the tunnel between nozzles, pulling extra freestream fluid into the outer channel to...

Seacraft's shaftless magnetic motor operates directly in water, removing unreliable seals and transmissions for enhanced reliability.

• Post-swirl...

Toroidal propeller designs reduce tip vortices to lower noise and cavitation in water.

• Blue Robotics sees promise but flags patent licensing,...

Newer personal underwater scooters like the SUBLUE VAPOR Series are adopting enclosed pump-jet propulsion over the guarded propellers found in traditional designs. This marks a clear engineering evolution for compact DPVs.

A hobbyist seeks a Fusion 360 design for an underwater scooter shell built around the Maytech 13 kW water jet kit, emphasizing practical mounting,...

The M2 jet drive delivers high-performance propulsion via water jet, advancing boats forward unlike traditional propeller systems.

• Radially outgassing propeller routes pressurized gas through blades for direct rotation, creating a compact integrated system.
• Replaces electric...

• Oblique inflow significantly amplifies RDT vibration and radiated noise levels
• Journal bearing excitation transfers rotor forces and cannot be...

• Owner needs 48V solid-state brushed controller to replace fried mechanical speed board on lead-acid battery setup
• Community suggests reed-switch...

• Stress reduction at source: Dual ANPC inverters in inverse sync cut neutral-point voltage fluctuations 90% and capacitor current stress 43% without...

The X-TEAM 4155 delivers true IP68 waterproofing via dual-lip seals and potted windings, eliminating external housings for simpler thruster builds.

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Purpose-built underwater thrusters using brushless DC motors deliver critical reliability for ROVs and diver units through pressure-tolerant...