Development Of The Adjustable Engine Mount For The Ultra-Light Helicopter

The purpose of this thesis is to design, analyze and fabricate an adjustable engine mount for an ultra-light helicopter. The engine mount must be able to support the load of ROTAX 582 UL DCDI engine and the engine gearbox system which in total is about 70 kg. The engine mount is designed so that it is capable of being shifted longitudinally and rotated circumferentially around the center post. The circumferential rotation indirectly have the effect of lateral displacements. This project uses the concept of Weight Shift Control (WSC) that is commonly use for a hang glider. However, instead of controlling the weight of the pilot, this WSC project is controlled by shifting the position of the engine. The analysis is done using the SOLIDWORK software. The analysis is performed to observe whether the structure of the engine mount can support the applied load or fail to perform as required. The analytical method are also calculated in this thesis to compare and verify the structure manually with the analysis result. When comparing the analytical and the analysis method, the stress of the engine mount have a percentage difference of 2.19%. In fabrication process, all the material and equipment in fabricating the model are available in the Aerospace workshop. This thesis provides detail method in developing the engine mount of an ultra-light helicopter starting from the conceptual design to the final fabrication of the engine mount structure