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All Journal Angkasa: Jurnal Ilmiah Bidang Teknologi Vortex
Elisabeth Anna Prattiwi
Institut Teknologi Dirgantara Adisutjipto
Aerospace Engineering Computer Science & IT Earth & Planetary Sciences Energy Materials Science & Nanotechnology Mechanical Engineering

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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
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 18, No 2 (2026): Mei
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/angkasa.v18i1.3428

Abstract

The increasing use of drones in Indonesia potentially causes noise pollution due to propeller-generated sound. One widely studied approach to reducing propeller noise is trailing edge modification. Noda et al. (2019) showed that serrated gurney flaps can reduce noise at low RPM with minimal impact on thrust, although their effectiveness decreases at higher RPM. One factor that has not been considered is the serration’s installation angle. 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 up to 41.707% at 10,000 RPM. In contrast, the trend of Sound Pressure Level (SPL) towards frequency generally increased, leading to a rise in Overall SPL (OASPL) up to 3.497 dB at 10,000 RPM
Analisis Penggunaan Virtual Customer Assistant (VICA) Terhadap Efektivitas dan Efisiensi Layanan Penumpang di Yogyakarta International Airport (YIA) Sabdanti Dikatria Nofi Rizkia Sari; Gunawan Gunawan; Sri Mulyani; Buyung Junaidin; Elisabeth Anna Prattiwi
Vortex Vol 7, No 2 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v7i2.4009

Abstract

Virtual Customer Assistant (VICA) adalah salah satu layanan customer yang disediakan oleh PT Angkasa Pura I di Yogyakarta International Airport (YIA), dalam upaya untuk meningkatkan excellent services dan meminimalisir penularan virus Covid-19. Penelitian ini bertujuan untuk menganalisis penggunaan Virtual Customer Assistant (VICA) terhadap efektivitas dan efisiensi layanan penumpang.Hal yang dianalisis adalah respon penumpang terhadap tingkat efektivitas dan efisiensi dengan metode kuantitatif deskriptif. Pengambilan data dengan menyebarkan kuesioner kepada 100 responden (penumpang), wawancara dan rekomendasi peneliti. Hasil pengumpulan data diolah menggunakan IBM Statistics SPSS 25 dan perhitungan manual untuk mencari persentase skor. Hasil analisis semua instrumen dinyatakan valid dan reliabel, tiap aspek varibel masuk dalam kategori >81,25%-100% sehingga dinyatakan Sangat Efektif dan atau Efisien. Rekomendasi layanan dengan menambahkan tempat dan disediakan layanan customer yang dikembangkan dengan Artificial Inteligence (AI).
Co-Authors Bangga Dirgantara Adiputra Buyung Junaidin, Buyung Eli Kumolosari Firliandini Pralinda Sundari Gunawan Gunawan Okto Dinaryanto Sabdanti Dikatria Nofi Rizkia Sari Sri Mulyani