LZ design - električni pogon jadralnih letal

This system is a unique application of electric power that is something really new on the scene. Besides being available on the LAK sailplanes, the system is also commercially available to other builders and is already featured on the Alisport Silent 2 Electro self-launching sailplane. The folding propeller is a novel design that enhances flying safety with “one button” instant power and very low drag when in the stowed position.

After evaluating available electric motors on the market, it was clear that there was no suitable electric motor which would fulfill our requirements. The weight of motor could be a maximum 7kg so that 27kg of batteries could compensate a nose-heavy moment. But its construction needed to be strong enough and suitable for instalation.

We decided to design our own electric motor. After two years of work, many tests and a few development versions, we have created a state of the art brushless DC electric motor. Our BLDC motor offers several advantages over brushed DC motors including higher efficiency and reliability, reduced noise, longer lifetime (no brush erosion), elimination of ionizing sparks from the commutator, more power, and an overall reduction of electromagnetic interference.