Lange EA 42

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

Lange EA 42
Type	Electric aero-engine
National origin	Germany
Manufacturer	Lange Aviation
First run	1995
Major applications	Lange Antares 20E

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

Antares 20E

• 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)