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101 frequencies, yet for most grades of electrical steel laminations, higher frequencies cause higher losses. The conflicting properties of electric steels and newer ESCs bear close study in order to determine an optimal alternative to the most severely affected laminations. That may be to remove the steel core entirely, or to use a different thickness or alloy of the steel. Conclusion The arrival of these new electric motor designs and recent advances has come at a critical time for the industry. With customers forever asking for more data, speed, range, options and so on from unmanned systems services, it is vital that better electric motors are available and that motor controllers, batteries and NVH engineering are improving as well. Acknowledgements The author would like to extend his thanks to Nabeel Shirazee at ePropelled, Bastian Greiner and Boris Imhoff at Plettenberg Elektromotoren, Jorgen Selnes at Alva Industries, Kynan Fletcher at Motion Robotics, and Sven Meise, Tomo Mitarai and Aki Watarai at Aichi Steel for their help with researching this article. Unmanned Systems Technology | February/March 2022 BELGIUM Xeryon +32 16 90 39 04 www.xeryon.com CHINA iFlight Innovation Technology +86 752 3866 695 www.iflight-rc.com T-Motor +86 791 8855 6889 www.tmotor.com CZECH REPUBLIC Model Motors +420 608 919 909 www.modelmotors.cz GERMANY Plettenberg Elektromotoren +49 5601 9796-0 www.plettenberg-motoren.net ISRAEL MTC Industries +972 4998 7772 www.mtcind.com JAPAN Aichi Steel Corporation +81 52 604 1111 www.aichi-steel.co.jp NORWAY Alva Industries +47 92 40 30 20 www.alvaindustries.com SPAIN Ever Elettronica +39 0371 412318 www.everelettronica.com SWITZERLAND Maxon Motor +41 41 666 1500 www.maxongroup.com Speedgoat +41 26 670 7550 www.speedgoat.com TURKEY Volt Electric Motors +90 232 877 1060 www.voltmotor.com.tr UK Avid Technology +44 1670 707 040 www.avidtp.com Electro Mechanical Systems +44 1202 716 887 www.ems-limited.co.uk Motion Robotics +44 2380 464 785 www.motion-robotics.co.uk USA Arnold Magnetic Technologies +1 585 385 9010 www.arnoldmagnetics.com Aveox +1 805 915 0200 www.aveox.com CR Flight +1 650 398 0721 www.crflight.com ElectroCraft +1 833 392 0390 www.electrocraft.com ePropelled +1 978 703 1350 www.epropelled.com Hacker Motor USA +1 913 214 6995 www.hackermotorusa.com Launchpoint Technologies +1 805 683 9659 www.launchpnt.com KDE Direct +1 360 818 4215 www.kdedirect.com MPI +1 847 438 2233 www.mpihobby.com Neumotors +1 858 674 2250 www.neumotors.com NWUAV +1 503 434 6845 www.nwuav.com Pegasus Aeronautics +1 604 812 7340 www.pegasusaero.ca Sullivan Products +1 410 732 3500 www.sullivanproducts.com Xoar International +1 626 679 1158 www.xoarintl.com Some examples of electric motors manufacturers and suppliers

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