Earticle

초록

영어

This study investigates the effects of offset distance and rotational speed differences between the upper and lower rotors on the aerodynamic performance of coaxial co‑rotating propellers. The test propeller is an 18‑inch diameter, pitch‑6.5‑inch, two‑bladed tapered configuration. Numerical simulations were performed using ANSYS Fluent V2023R1 by solving the incompressible Reynolds‑Averaged Navier–Stokes equations with the Shear Stress Transport (SST) k–ω turbulence model and the Multiple Reference Frame (MRF) approach based on steady-state assumption. The results show that, regardless of rotational speed configuration, increasing the offset distance between the propellers consistently improves the Figure of Merit (FoM). For different speed combinations, increasing the upper rotor speed led to higher inflow velocity into the lower rotor, reducing its thrust and increasing its torque, which in turn decreased the overall FoM. Conversely, when the lower rotor rotated faster, interference effects were mitigated, resulting in improved thrust and torque distribution and a higher FoM. These findings confirm the existence of an optimal rotational speed ratio that balances thrust and efficiency, providing valuable insights for performance optimization in unmanned aerial vehicles (UAVs) and rotorcraft systems.

목차

Abstract
1. 서론
2. 수치해석기법
2.1 모델링
2.2 전산해석 방법
3. 결과 및 분석
후기
References

키워드

저자

• 전수원 [ Su Won Jeon | Dept. Mechanical Engineering, Graduate school of Wonkwang Univ. ]
• 이상욱 [ Sang Wook LEE | Member, Professor, Dept. Mechanical Engineering, Wonkwang Univ. ] Corresponding Author
• 김완진 [ Wan-Chin KIM | Dept. Mechanical Materials Convergence Systems Engineering, Hanbat National Univ. ]
• 백수황 [ Soo-Whang BAEK | Dept. Human Intelligence and Robot Engineering, Sangmyung Univ. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회 학술대회논문집(구 한국기계기술학회 학술대회논문집) [Proceedings of KSMT Annual Meeting]

• 간기

  부정기

• 수록기간

  2000~2026

• 십진분류

  KDC 550 DDC 620