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Aug 11, 2022
Published
Aug 1, 2022
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Abstract

Abstract -. This research was conducted based on data obtained during testing at LAPAN (Lembaga
Antariksa dan Penerbangan Nasional), where there was a case that became a concern. The test is
about the free fall test, which results in a deflection that is considered too large. From these results
it was decided to investigate further. This free fall test uses impact testing where a material is
measured for its shock load resistance. Impact testing simulates the operating conditions of a
material where the loading that occurs is not only in static conditions but also occurs in dynamic
conditions. In the free fall test, a test was carried out to measure and see the resistance of the landing
gear and crash box in receiving dynamic loads, when the aircraft landed. The main purpose of
simulating this tool is for research and development of the free fall test equipment itself, as well as
the design of the landing gear of the LSU (Lapan Survaillance UAV) drone in the future. The impact
platform on the free fall test equipment plays an important role in impact testing, where the
deformation of the plate holder will be converted by the load cell, into a signal received by the
acquisition system. So it is designed to fit the existing needs. In this test equipment, the test object
is given a load (50 kg and 200 kg), height (4.72 m and 1,204 m), so that it reaches a velocity (9,623
m/s and 4,861 m/s) with impactor crash box geometry and main landing gear as well as plate holder
design based tools in the field. Based from testing, impact, and analysis using the finite element
method in this study, it was found that the deflection value was 1.771 mm which reduced 94.61% for
the crash box case and the deflection value was 2.696 mm with a reduction value of 87.85 % for the
main landing gear case from the existing initial design.



Keywords: Free fall test equipment, impact platform, landing gear, plate mount, main
landing gear, crash box, finite element method, LSU.

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite
Maulana, I. ., A. Sitompul, S. ., Rabeta, B., Fitriansyah, R. ., & Nurrohmad, A. (2022). Desain Iterasi Dudukan Pelat Pengukur Gaya Pada RIG Alat Uji Jatuh Bebas Menggunakan Optimasi Topology. Jurnal Teknologi Kedirgantaraan, 7(2), 79 - 92. https://doi.org/10.35894/jtk.v7i2.56
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