The Lange EA 42 is an electrical aero engine designed for self launching gliders.^[1] It is produced in Germany by Lange Aviation for their Antares 20E glider.

Development

The EA 42 combines an EM 42 brushless 42 kW electric external rotor motor with a related engine control system and power electronics.^[1] The motor drives a two-bladed composite fixed pitch propeller with a diameter of 2 m (7 ft). It is powered by a battery pack.

Applications

• Lange Antares 20E
• Lange Antares 23E
• Schempp-Hirth Arcus E

Specifications (EA 42)

EM42 electrical engine

Data from TCDS^[1]

General characteristics

• Type: Brushless electric aircraft engine
• Length: 272 mm (10.7 in)
• Diameter: 250 mm (9.8 in)
• Dry weight: 29.12 kg (64.2 lb)

Components

• Coil type: Outrunner
• Cooling system: air
• Reduction gear: none

Performance

• Power output: 38.5 kW (52 hp)
• Voltage: V nominal
• Power-to-weight ratio: 1.3 kW/kg

LE 42 power electronics

• Length: 422 mm (16.6 in)
• Width: 169 mm (6.7 in)
• Height: 208 mm (8.2 in)
• Mass: 9.58 kg (21.12 lb)