Startup launches quiet electric duct engines for commercial drones

Startup launches quiet electric duct engines for commercial drones

Business news |
By Nick Flaherty

Greenjets in the UK has developed a quiet, tiny ducted electric propulsor, or ‘jet engine’, for commercial drones.

The startup is a spinout of consultancy Blue Bears and has been developing the scalable engine design for the last two years. It weighs 750g and provides a maximum thrust of 5kgf at an efficiency of 360W/kgf.

The first engine, the IPM5, is engineered around a ducted fan architecture, which offers both a reduction in noise and an increase in safety over open bladed propellers. Greenjets has also patented several features that overcome weight and efficiency challenges traditionally faced by ducted fans. Other variants with 10 or 15 kgf of thrust can be quickly and easily developed.

‘‘Our team combines decades of knowledge in traditional jet engines from Rolls-Royce, expertise in volume production of automotive engines from Cosworth and expertise in electrification from the UK Motorsport Valley, so Greenjets is uniquely positioned to be a world leader in this space with ultra-quiet and ultra-efficient engines,’ said Anmol Manohar, CEO of Greenjets.

Alongside the development of IPM5, Greenjets is using this technology to produce propulsors for eVTOL and regional aircraft.

‘‘Moving forwards, we have a very different business model. Unlike our rivals who only offer off-the-shelf products, Greenjets can offer product as well as quickly create bespoke engines that match customers’ precise requirements for weight and thrust, thanks to our proprietary design systems and manufacturing methods,” said Guido Monterzino, Greenjets’ CTO, said

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