The SP-275 FI TS ROS is a fuel injected two-stroke engine with twin spark and 275 ccm rear output shaft for a variety of UAV and UAS applications.
The SP-275 2-stroke dual cylinder with 275ccm is the largest and most powerful dual cylinder, making it the most versatile two stroke engine in our portfolio. This power dense propulsion system is most suited to programs from 100-150kg MTOW due to its dimensions and power output.
This engine size has been manufactured for over a decade and accrued more than 10,000 operational hours. Internal development and testing has accumulated over 800hrs on dynamometer simulating various mission profiles and conditions. With over 1000 engine systems produced to date, the robustness and durability of the SP-275 TS ROS has been proven in all global scenarios, from extreme cold to heat, humid and salty conditions to dust.
Many customers fly over 12 hours continuously and BVLOS, due to this engines target market system. With the starter generator mounted on the ROS, the SP-275 is a dynamic propulsion system capable of several different configurations.
The following additional configurations can be offered:
- Generator and Controller
- Starter Generator and Controller
| Type | 2-Cylinder Gas Engine |
| Capacity | 275 ccm / 16.78 cu in |
| Power | 21.5 HP / 15.8 KW @ 6000 RPM |
| Speed Range | 1500 – 8000 RPM |
| Weight | without subcomponents 20.35 lbs (9.25kg) |
| Crankshaft | 4 ball bearings |
| Oil/Gasoline ratio | 1:50 / 2% mix |
| Operating Voltage | 12 – 15 V DC |
| Bore diameter | 2.32 inch (59.00 mm) |
| Stroke | 1.97 inch (50.00 mm) |
| Torque | 28.3 Nm @ 3250 RPM |
