ultra- q u i e t e f f i c ie n ts a f e | propulsion
MISSION

Silently shaping purposeful propulsion

Drones are noisy, unsafe, and can't yet be deployed at scale. Our patented engine technology increases aircraft safety, reduces the certification burden on our customers and cuts noise by at least two thirds.

The rapid scalability of our proprietary technology has enabled the development of a wide array of engines, designed to propel hovercraft, airships, manned aircraft, multirotors + more.
Now
Drones
2028
Air Taxis
2030
Commuters
Committed to creating a greener future for flight: Our vision is to power all forms of electric aircraft, from drones to regional commuters. The scope of our development broadens as nascent industries become commercially viable.

Product Lineup

The products below are engines which we have already developed. If you can't find a propulsor that meets your requirements, please get in touch to discuss bespoke development.
All
Fixed Wing / EVTOL
Multirotor
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Sycamore 160

5kg Static Thrust
Efficient, compact propulsion for sub-25kg fixed wing / VTOL UAVs.
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Aspen 212

5kg Static Thrust
Multirotor propulsion for<12kg quadcopters or <18kg hexacopters.
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Hemlock 125

9-13kg Static Thrust
High speed propulsor for fixed wing drones. Up to 125m/s flight speed.

Alder 350

50kg Static Thrust
Made for large drones, or as an electric sustainer for manned aircraft.
At a glance:
Static Thrust
6kgf
5kgf
4kgf
3kgf
5kgf
50kgf
Mass
792g
750g
656g
591g
500g
8,000g
Flight Mode
Hover or cruise
Hover or cruise
Hover or cruise
Hover or cruise
Hover
Hover or cruise
Cruise Speed
26m/s
26m/s
26m/s
26m/s
0m/s
Please enquire
USE CASE

Proud to power StriekAir's CarryAir UAV

Our Sycamore 160-5 engines are being used by StriekAir's CarryAir UAV, which is set to be used by the German emergency services. Thomas Strieker, the company's founder, switched over to Greenjets engines for redundancy, efficiency, safety as well as a reduced sound signature.
Learn more about StriekAir
Bespoke engine development
200 years of deep domain knowledge
200 years of deep domain knowledge
Our team has over 200 years of industry expertise carried over from Rolls-Royce, BAE Systems & Formula 1 + more. Our team’s learnings from these experiences are reflected in our unique design & manufacturing methodology, which allow us to produce propulsion systems at an unrivalled pace.