Analisis Pengaruh Penambahan Inclined Serration Flat-Plate Pada Trailing Edge Propeller Terhadap Tingkat Kebisingan dan Nilai Thrust

Firliandini Pralinda Sundari, Elisabeth Anna Prattiwi, Bangga Dirgantara Adiputra, Eli Kumolosari, Okto Dinaryanto

Submitted : 2025-09-19, Published : 2026-02-20.

Abstract

The increasing use of drones in Indonesia has the potential to cause noise pollution due to propeller-generated sound. One widely studied approach to reducing propeller noise is by modifying the trailing edge. This study investigates the effect of adding an inclined serration flat-plate on the noise and thrust of a propeller. Numerical simulations were conducted using the frozen rotor method with the k-ω SST turbulence model and the Ffwocs-William and Hawking acoustic analogy. The results show that the serration increased thrust across all tested speeds, with a maximum increase of 41.707% at 10,000 RPM. In contrast, the trend of Sound Pressure Level (SPL) towards frequency was predominantly increasing, leading to a rise in Overall SPL (OASPL) up to 3.4 dB at 10,000 RPM.

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