Honda-Jet Engine Nacelle

In 2008 Marshall Aerospace (MA) was contracted to carry out the structural design and build of the engine nacelles for the new advanced light jet Honda-Jet. On this project Gediz conducted Random vibration analysis of the engine nacelle structure to determine stress response to the high energy vibroacoustic environment within the locality of the jet engine’s exhaust stream.

Analysis demonstrated that modification of the nacelle structure was required to eliminate some damaging vibration mode shapes that resulted in localised regions of high alternating stress – which inherently implied short fatigue lives. Gediz instructed the necessary design changes to eliminate localised high stress regions. A second analysis iteration, after modification of the nacelle design, showed that stress levels had been reduced and a significant increase in the predicted fatigue life was achieved for the life cycle of the aircraft. Gediz’s work on the project was crucial since it served to optimise the nacelle structure and eliminate failure modes including fatigue crack initiation.

Image Credits : HondaJet , Honda Aircraft Comapany