GWJ Technology GmbH
Celler Straße 67 - 69
38114 Braunschweig
Fon: +49 (0) 531-129 399 0
Fax: +49 (0) 531-129 399 29


09.09.14: Use of GWJ Software Solutions for Development of Helicopters

Starting as far back as 2008, Dreiling Maschinenbau GmbH has been developing ultralight aircrafts. On 4th September 2014, the new prototype "CoAX", as the new helicopter is named, was presented to the public for the first time.

"CoAX" weighs just 280 kilograms and a range of 800 kilometers should be possible. With more than 100 flight hours and best flight results, the chances are very good to get the official flight permission from the Federal Ministry of Transport. The helicopter is currently in a testing phase which should last until April 2015.

One aspect that makes us especially proud is the fact that the gearing was calculated with GWJ software tools. GWJ´s eAssistant SystemManager software was used for the calculation of the rotor shaft and rotor gearing. Furthermore, our special gearing software GearEngineer was used to calculate and optimize the spiral bevel gear pairs. The spiral bevel gears within the two current prototypes were manufactured on a multi-axis universal machining center. The necessary data were generated by means of a mathematical simulation of the manufacturing process analog to traditional manufacturing on bevel gear machines. The mathematical simulation is integrated into the GearEngineer software. The bevel gears were determined in a way that makes it possible to manufacture the gears by 5-axis milling and by traditional series production on bevel gear machines. Please visit the following link to get detailed information on Dreiling Maschinenbau GmbH:

Please click

to find further information on eAssistant SystemManager. Visit

to get information on GearEngineer.