The Emrax 2 is a
Slovenia
Slovenia, officially the Republic of Slovenia, is a country in Central Europe. It borders Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the south and southeast, and a short (46.6 km) coastline within the Adriati ...
n
electric motor
An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a electromagnetic coil, wire winding to gene ...
for powering
electric aircraft
An electric aircraft is an aircraft powered by electricity.
Electric aircraft are seen as a way to reduce the environmental effects of aviation, providing zero emissions and quieter flights.
Electricity may be supplied by a variety of methods, ...
and other applications, designed and produced by
Emrax d.o.o of
Kamnik
Kamnik (; ''Leksikon občin kraljestev in dežel zastopanih v državnem zboru,'' vol. 6: ''Kranjsko''. 1906. Vienna: C. Kr. Dvorna in Državna Tiskarna, pp. 26–27. or ''Stein in Oberkrain'') is the ninth-largest town of Slovenia, located in t ...
. The company was formerly called Enstroj and based in
Radomlje
Radomlje (; ''Leksikon občin kraljestev in dežel zastopanih v državnem zboru,'' vol. 6: ''Kranjsko''. 1906. Vienna: C. Kr. Dvorna in Državna Tiskarna, p. 28.) is a settlement on the left bank of the Kamnik Bistrica River north of Domžale in t ...
.
[Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 242-243. WDLA UK, Lancaster UK, 2011. ]
By May 2018 the engine was no longer advertised on the company website and seems to be out of production.
Design and development
The Emrax 2 is a
brushless 200
Volt
The volt (symbol: V) is the unit of electric potential, Voltage#Galvani potential vs. electrochemical potential, electric potential difference (voltage), and electromotive force in the International System of Units, International System of Uni ...
design, producing , with an
outrunner
An outrunner is an electric motor having the rotor outside the stator, as though the motor were turned inside out. They are often used in radio-controlled model aircraft.
This type of motor spins its outer shell around its windings, much like ...
coil. It has a 94% 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
A reduction drive is a mechanical device to shift rotational speed. A planetary reduction drive is a small scale version using ball bearings in an epicyclic arrangement instead of toothed gears.
Reduction drives are used in engines of all kinds ...
.
Variants
;Emrax 2 AC
:Air-cooled version, producing at 3000 rpm.
;Emrax 2 LC
:Liquid-cooled version, producing at 3000 rpm.
Specifications (Emrax 2 AC)
See also
References
{{Emrax aircraft engines
Aircraft electric engines