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Sky Power Introduces New Two-Stroke Engine for Small UAS

By Mike Ball / 03 Mar 2020
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Sky Power SP-56 UAS engineSky Power, a manufacturer of internal combustion engines for UAS (unmanned aerial systems), has announced the launch of the SP-56 series of twin-cylinder engines. The new family of UAS propulsion systems is Sky Power’s smallest two-cylinder development yet, and is built on the same modular concept as all of the company’s other systems.

The SP-56 series fills the gap between Sky Power’s small SP-28 or SP-55 single-cylinder engine series and and the SP-110 series of larger twin-cylinder engines. It provides 3.35 KW of power at 7000 rpm, with the carburetor version weighing only 2.6 kg. It can be equipped with a generator or starter-generator on the rear output shaft, which allows hybrid solutions in which the engines only generate electricity.

The SP-56 series is based on the updated single-cylinder engines from Sky Power’s SP-28 family. As a result, the SP-56 series has the same improved cylinder design as the SP-28 series, which gives the engine better thermal stability. Like all other Sky Power engines, the SP-56 series engines are available in different versions and in the near future fuel injection system and heavy fuel versions are planned.

Karsten Schudt, Managing Partner of Sky Power GmbH, commented: “It became increasingly clear that we lacked a solution for our customers in the field of small two-cylinder engines. That is why we decided to develop this engine family in 2019. This type of engine was particularly lacking for integration into small helicopters, as single-cylinder engines often do not run smooth enough for these applications, and the SP-110 series is already too big for many of these aircraft.”

To learn more, contact Sky Power International: Visit Website Send Message View Supplier Profile
Posted by Mike Ball Mike Ball is our resident technical editor here at Unmanned Systems Technology. Combining his passion for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years. Connect & Contact