지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.12 Number.2
- 발행연도
- 2011.6
- 수록면
- 156 - 162 (7page)
이용수
초록· 키워드
오류제보하기
The preliminary design stage of helicopters consists of various operations and in each operation design several detailed analysis tasks are needed. The analysis tasks include performance and the required power estimation. In helicopter design, those are usually carried out by adopting the momentum theory. In this paper, an explicit form of computational analysis based on the blade element theory and uniform/non-uniform inflow model is developed. The other motivation of the present development is to obtain trim and required power estimation for various helicopter configurations. Sectional and hub loads, power, trim, and flapping equations are derived by using a symbolic tool. Iterative computations are carried out till convergence is achieved in the blade response, inflow, and trim. The predictions regarding the trim and power estimation turn out to be correlated well with the experimental results. The effect of inflow is further investigated. It is found that the present prediction for the lateral cyclic pitch angle is improved with the non-uniform inflow model as compared to that by the uniform inflow model. The presently improved trim and power estimation will be useful for future helicopter sizing and performance analysis.
목차
Abstract
1. Introduction
2. Formulation
3. Results and Discussion
4. Conclusions
Acknowledgements
References
참고문헌 (12)
참고문헌 신청
1. [학위논문] - Datta, A / 2004 / Fundamental Understanding, Prediction and Validation of Rotor Vibratory Loads in Steady Level Flight / 박사 / University of Maryland
2. [단행본] - Davis, S. J. / 1979 / User's Manual for HESCOMP: The Helicopter Sizing and Performance Computer Program, Revision 2 / Boeing Vertol Company
3. [학술지(정기간행물)] - Ibrahim, A. A. S / 2008 / Power estimation for four seater helicopter / Jurnal Mekanikal 27 : 78 ~ 90
4. [단행본] - Johnson, W / 1980 / Helicopter Theory / Princeton University Press
5. [학술대회논문] - Johnson, W. / 2010 / NDARC-NASA design and analysis of rotorcraft validation and demonstration / American Helicopter Society Aeromechanics Specialist's Conference on Aeromechanics
2. [단행본] - Davis, S. J. / 1979 / User's Manual for HESCOMP: The Helicopter Sizing and Performance Computer Program, Revision 2 / Boeing Vertol Company
3. [학술지(정기간행물)] - Ibrahim, A. A. S / 2008 / Power estimation for four seater helicopter / Jurnal Mekanikal 27 : 78 ~ 90
4. [단행본] - Johnson, W / 1980 / Helicopter Theory / Princeton University Press
5. [학술대회논문] - Johnson, W. / 2010 / NDARC-NASA design and analysis of rotorcraft validation and demonstration / American Helicopter Society Aeromechanics Specialist's Conference on Aeromechanics
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