Student-Built HydraJet Skims Water Using Recycled Parts and Air Power

A student-designed hydroplane called the HydraJet is turning heads with its unique air-powered propulsion and recycled carbon-fibre body.

Credit: CovaConcepts

Developed by startup CovaConcepts, the HydraJet is a remote-controlled watercraft that combines elements of a hydroplane and an airboat. It is powered by a top-mounted 70-mm Electric Ducted Fan (EDF), which pushes air to propel the boat across the water’s surface.

Inventor Tamara, an aerospace engineer, created the HydraJet while still a student. The decision to mount the motor on top was originally a cost-saving measure, avoiding the need for waterproofing underwater components.

The boat’s body is made from recycled carbon fibre, a lightweight yet strong material ideal for high-performance applications. The EDF system is powered by a 2,900-mAh battery, allowing the HydraJet to achieve high speeds and agile manoeuvrability.

Although the exact speed has not been disclosed, the HydraJet’s design allows it to skim across the water on a cushion of air. Unlike hydrofoils, which use underwater fins to lift the vessel above the water, hydroplanes like the HydraJet maintain contact with the surface, resulting in a more dynamic but potentially bumpier ride.

Currently, the HydraJet exists only as a small-scale model. Tamara has expressed interest in developing a larger version in the future, possibly incorporating a foiling design to improve ride smoothness.

The HydraJet’s innovative approach offers a fresh perspective on watercraft design and highlights the potential of sustainable materials and cost-effective engineering.

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• HydraJet is a student-built hydroplane powered by a top-mounted electric fan

• Made from recycled carbon fibre and uses a 2,900-mAh battery

• Designed by aerospace engineer Tamara during her student years

Source: INTERESTING ENGINEERING