Emrax 228
The Emrax 228 is a Slovenian electric motor for powering electric aircraft and other applications, designed and produced by Emrax d.o.o of Kamnik. The company was formerly called Enstroj and based in Radomlje.[1]
| Emrax 228 | |
|---|---|
| Type | Electric aircraft engine |
| National origin | Slovenia |
| Manufacturer | Emrax |
| Unit cost | €2,790 (2015) |
Design and development
The Emrax 228 is a brushless 130 volt design producing a peak of 100 kW (134 hp), 55 kW (74 hp) continuous, with an outrunner coil. It has a 98% efficiency. The low working rpm of the engine means that it can turn a propeller at efficient speeds without the need for a reduction drive.[1][2]
Specifications (Emrax 228)
Data from Tacke and manufacturer[1][2]
General characteristics
- Type: Brushless electric aircraft engine
- Length: 86 mm (3.4 in)
- Diameter: 228 mm (9.0 in)
- Dry weight: 12 kg (26.5 lb)
Components
- Coil type: Outrunner
- Cooling system: air and/or liquid
- Reduction gear: none
Performance
- Power output: 100 kW (134 hp) peak, 55 kW (74 hp) continuous
- Voltage: 130V nominal
- Best efficiency: 98%
- Power-to-weight ratio: 8.3 kW/kg
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gollark: Yes, but polynomial *good*.
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gollark: * NP-hard
gollark: By reducing it to an NP-complete problem.
References
- Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262–263. Flying Pages Europe SARL, 2015. ISSN 1368-485X
- Emrax. "Emrax 228". emrax.com. Retrieved 29 April 2018.
External links
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