Engine with Integrated Generator
The A33H engine is a purpose designed UAS engine. It features a 3D-printed cylinder and exhaust and a high quality machined crankcase with integrated generator system. The 3D printed cylinder head minimizes engine-to-engine variability. This simplifies fleet management, allowing a ‘tighter’ fleet ECU calibration for improved performance and fuel economy.
Maxon Generator
The A33H engine is equipped with a 3-phase Maxon brushless motor used as a generator. The generator is driven by a toothed belt from the engine output shaft and produces 250 watts (500 watts intermittent) of electrical power. The generator includes sensors which allow it to be used to start the engine from a 24V supply (Power conditioning and starting electronics are a separate package).
Exhaust System
The exhaust system on the A33H reduces the acoustic signature of the engine as compared to conventional side-mount exhaust; and is designed to fit within an engine cowling to reduce airframe drag.
- High power to weight
- Low acoustic signature
- 3D-printed aluminum head and cylinder improves engine repeatability
- Hardware, electronics, and software all designed specifically for UAS applications
- Machined crankcase with integrated belt driven starter/generator
- Integrated isolation mount
| Engine Type: | Air-cooled 2-stroke single |
| Displacement: | 33 cc (2.0 ci) |
| Mass: | 3.15 kg (6.94 lbs) (Includes core engine, exhaust, ECU, fuel pump, injector, ignition, generator, harnesses) |
| Power Output: | 2.0 kW (2.7 HP) at 8200 RPM |
| PreHeat: | 10 minutes @ 110 Watts |
| Fuel Consumption: | 500 g/kW-hr (0.83 lbs/HP-hr) at cruise |
| Generator output: | 200W (400W intermittent duty cycle) |
| Fuel Type: | VP P4F heavy fuel 50:1 premix |
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