메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
이학진 (KAIST) 이덕주 (KAIST)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제29권 제4호(통권 249호)
발행연도
2019.8
수록면
518 - 526 (9page)
DOI
10.5050/KSNVE.2019.29.4.518

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
The rotor interaction phenomenon occurs frequently in unmanned aerial vehicles (UAVs) with multi-rotor configuration. In this study, we investigated the rotor interaction effects of a small-size quadcopter UAV on the aerodynamic performance and acoustic characteristics. The numerical simulation of DJI Phantom 2 model in the hover flight condition was conducted using the nonlinear vortex lattice method (NVLM) with the vortex particle method (VPM) and acoustic analogy based on the Farassat-1A formula. NVLM can consider the nonlinear aerodynamic characteristics that are mainly associated with viscous and low Reynolds number effects by incorporating airfoil look-up table and vortex strength correction. VPM is well suitable for simulating complex wake structures of quadcopter UAV because maintaining the connectivity between adjacent vortex particles is not required. Calculations for an isolated rotor were compared against measurements to validate the predicted results, including thrust force and tonal noise at 1st blade passing frequency (BPF). The calculations for a quadcopter configuration show that the average thrust coefficient decreases and thrust coefficient begins to fluctuate dramatically due to severe rotor interaction. In addition, the sound pressure level of the quadcopter is much higher than that of the isolated rotor and a significant difference in noise directivity between the quadcopter and isolated rotor is clearly captured. It is observed that unsteady loading introduced by rotor interaction leads to a considerable increase in noise. This study is a preliminary study to the aeroacoustic problem in multicopter UAV. The discussion in this work gives scope for further research on noise reductions of multicopter UAV by controlling a separation distance between the rotors.

목차

ABSTRACT
1. 서론
2. 수치해석 방법
3. 해석 모델 및 조건
4. 결과 및 고찰
5. 결론
References

참고문헌 (8)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

이 논문과 함께 이용한 논문

최근 본 자료

전체보기

댓글(0)

0