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High powered,low weight,direct drive ELECTRIC MOTORS up to 60 kW, liquid or air cooled High powered,low weight,direct drive ELECTRIC MOTORS up to 60 kW, liquid or air cooled
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FLY in the future with an electric self-launch sailplane Electro Apis EA1


We are developing and producing an electric propulsion systems for FUTURE VEHICLES
Our main product now are
low weight, low RPM, high powered (up to 50kWp), direct drive BLDC EMRAX motors and controllers SAC41 up to 80 kVA




Controller tech. data SAC41
http://www.piktronik.com/index.php?option=com_content&view=article&id=80&Itemid=163⟨=en

In 90 seconds climb up to 350m - included take off. Temperature on copper EMRAX prototype 30kW (41HP) Air cooling motor windings was only 70 deg C. Max altitude is 3000m at one charging the batteries
Take Off and retroact the propeller in to the fuselage EA1:
http://www.youtube.com/watch?v=pt8ISQC7aVY
NEW: Take off on asphalt running way: http://www.youtube.com/watch?v=Y1N0CN2TQUg

http://www.youtube.com/watch?v=jPGeDAZHxMo
http://www.youtube.com/watch?v=fm3mliPyeeM



ELECTRIC APIS EA1 is one of the first sailplanes in the world and the first one in my country - Slovenia EU (the first flight was 18. April 2005), which can take off with an electromotor and climb up to altitude 1800m at 50%DOD, even to altitude 3000m at 90%DOD. The altitude depends on the percentage of the discharging of the Li-Poly batteries. The best recomended discharging of the batteries is about 50%DOD. In this case the altitude is app 1800m and the batteries can give 1500 cycles http://kokam.com/english/product/kokam_Lipo_01.html

I did't find any suitable electric motor in the word for direct drive propeller - so I made it by myself. The high powered - BLDC electric motor EMRAX 30 kW continious power is reliable for each altitude. It operates with minimum noise and gives high power and excellent torque at low RPM (direct drive prop) for best climbing up to 6,0 m/s.

In the future solar cells on the wings will give enough nature energy for many take offs next day and to climb much over than 3000 metresof the altitude.

AMS flight used to produce APIS sail planes in many versions. I developed an electric propulsion system in my firm called ENSTROJ. In that time (in Y 2004) AMS made kit parts for my Apis e.e.

The firm PIPISTREL is a new owner of APIS gliders project now. http://www.pipistrel.si/planes/721

Apis EA1 has a newely designed canopy, an more efective inner ventialation, it has a retractable wheel with shock-absorber and many new designs for electro power system. The retractable wheel improve L/D = 41:1 and it also visually improves the stream line of the plane.The doors on the body are close when the motor with the propeller is outside or inside the fuselage. The electric system does not produce noise, it is clean, safe, reliable and virtually maintenance free.

Tehnical data and performance using the NEW tailor-made brushless electric motor named EMRAX 2

The last tests on the new EMRAX 2 air cooled prototype electric motor (Dec 2009) mounted on EA1 - show us the excellent results:

El motor -------------------------------------------------- brushless EMRAX 2 (produced by ENSTROJ)

Electric motor weight -------------------------------- 11,5 kg
Controller DC/AC - Piktronik ---------------------- SAC - 40 (aircooling)
Engine peak power (1min) ------------------------- 50 kW - 68 HP (aircooling 20 m/sec) at 200V DC/2000 RPM
Torque continious/peak ----------------------------- 150 Nm/ 250 Nm
Engine speed EA1------------------------------------ 1900 RPM
at 200V DC ( direct prop drive)
Propeller diameter EA1------------------------------ 1,7m (new one on EA2 will be 1,8m)
Static prop thrust (prop 1,7m)--------------------- 1150 N
Batteries Li-poly - power capacity --------------- 8,0KWh
Capacity current -------------------------------------- 40 Ah

Voltage DC --------------------------------------------- 200 V

Batteries weight---------------------------------------- 54 kg

Charging time - depend of DOD ----------------- 4 - 6 hours/230V

Take off distance on grass/ time ---------------- 80 m ( in 8 seconds)

Take off distance on asphalt/ time ------------- 50 m ( in 5 seconds) http://www.youtube.com/watch?v=Y1N0CN2TQUg
Max climb rate ---------------------------------------- 6,0 m/s
Max altitude 50/90% discharging -------------- 1600m (3000m)

Best glide ----------------------------------------------- 41 : 1 at 95 km/h

Empty weight ----------------------------------------- 240 kg

Max take off mass ----------------------------------- 350 kg

Max horizontal flight distance -------------------- 200 km

options:

Engine peak power (30 sec) ------------------------ 75 kW - (100 HP) aircooling 20 m/sec at 300V DC/ 3000 RPM (it is possible - not tested yet)
EMRAX as Duplex ----------------------------------------- an option (one after another) - the power and torque is doubled

More tehnical data about the EMRAX motors can find on the MOTOR SITE



We are in favour to make reliable innovations, which are the most important for comfortable in enjoyable flying.

High efficienty, high-powered, low weight, direct drive electric motors - generators will run the future machines, EV, boats, planes.





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Enstroj l Sušnik Roman, s.p. l Pod hribom 4 l 1235 Radomlje l Slovenija l Europa