Normal Modes Study on Half Wing Structure of N219 Aircraft Using Computational Method

Abstract:

This paper investigates the result of normal modes study on half wing structure of N219 aircraft. The analysis was completed using computational method with stick model for wing structure. A short mathematical review of the normal mode study is investigated in this paper. The study was completed for three cases of flight: zero fuel, minimum fuel and maximum fuel. The results of study, i.e., natural frequencies and mode shapes, are shown here. The results will be used for further dynamic study to analyze the flutter speed of N219 aircraft. The result comparison shows that for the same normal mode input parameters, each three cases have different number of mode shapes and different frequency value. The increments of natural frequencies between full fuel to minimum fuel is 2.5% and minimum fuel to zero fuel is 2.8%.

• Periodical: Advances in Science and Technology (Volume 125)
• Pages: 81-86
• DOI: https://doi.org/10.4028/p-pnp9pp
• Online since: March 2023
• Authors: Mirna Sari*, Harus Laksana Guntur, Mochammad Bayu Sakti Pratama
• Keywords: Half Wing of N219, Natural Frequencies, Normal Modes, Stick Model

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