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Sky Power GmbH  

Bad Homburg,  Hessen 
Germany
https://skypower.online/
  • Booth: 2933


Welcome to propulsion units "Made in Germany"

Sky Power GmbH is the leading manufacturer of 2-stroke combustion and Wankel engines for UAS (Unmanned Aerial Systems) and hybrid applications. In addition to the development and manufacturing, Sky Power produces all engines in Germany. Custom adaptations, new developments and the capability expansion of the combustion engines are corporate objectives. All engines can be used in different configurations, according to customer needs. The engines can be configured application-specific, as a direct propulsion unit, as a range extender in a hybrid configuration or as a power unit and generator.


 Show Specials

  • The SP-55 single-cylinder engine is one of our longest standing engines and comes in different versions. The new version, the SP-55 FI TS hybrid is designed to generate electricity for unmanned aircraft systems. The engine has twin spark plugs and is equipped with a fuel injection system. With this new engine, we want to address users of solely electric propulsion technologies who are looking for an efficient generator solution not only for unmanned flight systems but also for other applications. Controllable via CAN (optional generator start input) Battery voltage 36-75V (nominal 48V) Max. power 2KW @ 48VDC (40A@MSL) Generator current sensor External load current sensor (via CAN) Temperature monitoring Overload derating Programmable battery charging current Standalone operation Automatic throttle regulation due to external load current sensor Advanced combustion engine start

 Press Releases

  • Propulsion systems in unmanned aerial vehicles (UAVs) must function reliably. Since the engines are the primary mission-critical component of a UAV, it is important to prove their reliability. This is increasingly demanded by the industry from engine manufacturers. Sky Power GmbH therefore tested its SP-55 TS carburetor engine to demonstrate its endurance and reliability using a high stress running profile per FAR33. "After a test period of 150 hours, as well as another 30 run-in hours prior to testing, the SP-55 TS successfully completed the test," Karsten Schudt, Managing Director of Sky Power GmbH, looks back on the test. Prior to starting, various objectives were defined that were to be achieved with the endurance test. These included load limit and endurance data. At the same time, the airworthiness of the engine was proven and documented by Sky Power qualifying reliability against defined FAA standards. "And, of course, we wanted to collect data to further assess product operating limits, maintenance schedules, and hourly operating costs as they relate to the product life cycle," says Schudt, describing the test objectives. The SP-55 TS is an air-cooled, 2-stroke, single-cylinder engine, with a displacement of 55 cc (10.37 cu in). The engine uses Sky Power electronic ignition and a Walbro HDA6A carburetor for fuel delivery. The fuel used in the test run was unleaded gasoline, in four different versions, at a 50:1 oil premix ratio. Engine power is 3.07 kW (4.18 hp) at 6500 rpm.The engine is designed for a direct-drive propeller in a thrust or tug configuration. The test setup was performed on Sky Power GmbH's stationary engine test stand. Testing was conducted according to a specified maximum temperature and speed profile for approximately 8 hours per day until a prescribed test duration of 150 hours was achieved. "In addition to component hours, engine telemetry, environmental conditions and fuel consumption, all test results were documented, evaluated and summarized in a test protocol," Schudt said. At the end of the daily test cycles, the engine was subjected to an inspection based on a checklist to detect changes at an early stage, document them and rectify them if necessary. After 150 hours, the engine was removed from the test stand and subjected to a full. "The engine demonstrated the reliability we expected in the test. Nevertheless, we also gained new insights, such as the use of different fuels. For example, blending Aspen two-stroke fuel mixture with Shell V Power or Total Super Plus achieved the best results in terms of reducing deposits on the piston and cylinder. The maintenance intervals we specified also proved to be optimal," explains Schudt.

 Products

  • SP-180 SRE Hybrid
    The Best Power to weight ratio rotary engine.<br />Power: 22 KW @ 6000 RPM<br />...

  • SP-55 FI TS GEN PUR Electric
    System features:<br />- Battery V 36 – 75V (nom. 48V)<br />- Max. power 2 kW @ 50VDC <br />- Generator current sensor<br />- Temp. monitoring<br />- Overload derating<br />- Programmable battery charging current<br />- Auto. throttle regulation due to external load current sensor<br />- Advanced combustion engine start<br />...

  • SP-275 FI TS
    The SP-275 FI TS ROS. The engine is designed with twin spark plugs and manual decompression and a Rear Out Shaft. The EFI-system communicates via CAN and can be also offered with hybrid and HF functionality. <br /><br />Power: 16.12 KW @ 5750 RPM<br />Torque: 28.93 Nm @ 4500 RPM...

  • SP-170 FI TS
    The SP-170 is a powerfull 2-cylinder engine with twin spark per cylinder and rear output shaft in the Sky Power portfolio. The engine is equipped with a FI system and an improved cylinder design for a higher thermal stability. The Engine Mount is flexible in order to adjust to different mounting positons as all engines do.<br />The Engine can be equipped with:<br />Generator incl. Controller<br />Startergenerator incl. Controller<br /><br />Power: 9.7 KW @ 6000 RPM<br />Torque: 17.2 Nm @ 4500 RPM<br />...


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