Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Jae-Sang Park"'
Autor:
Yu-Been Lee, Jae-Sang Park
Publikováno v:
Aerospace, Vol 10, Iss 2, p 187 (2023)
This present study investigates the effect of blade tip configurations, such as the sweepback angle and anhedral angle, on the performance and hub vibratory loads for the lift-offset coaxial rotor of a 30,000-pound-class high-speed long-range utility
Externí odkaz:
https://doaj.org/article/c89d68e54404427db22c4f44c4c936c8
Autor:
Yu-Been Lee, Jae-Sang Park
Publikováno v:
Aerospace, Vol 9, Iss 3, p 152 (2022)
Hover performance analyses of coaxial co-rotating rotors (or stacked rotors), which can be used as lifting rotors for electric VTOL (eVTOL) aircraft, are conducted here. In this study, the rotorcraft comprehensive analysis code, CAMRAD II, is used wi
Externí odkaz:
https://doaj.org/article/dc9a67c734a94936a03c00050c355ebe
Publikováno v:
International Journal of Aerospace Engineering, Vol 2020 (2020)
This study is aimed at providing a numerical derivation of the shell knockdown factors of isogrid-stiffened cylinders under axial compressive loads. The present work uses two different analysis models such as the detailed model with modeling of numer
Externí odkaz:
https://doaj.org/article/c7ec2cac04a44bbda453d46a5b0f3006
Publikováno v:
Aerospace, Vol 8, Iss 11, p 346 (2021)
The internal pressure of a thin-walled cylindrical structure under axial compression may improve the buckling stability by relieving loads and reducing initial imperfections. In this study, the effect of internal pressure on the buckling knockdown fa
Externí odkaz:
https://doaj.org/article/d5496758c65349229acf1cba7c47778f
Publikováno v:
International Journal of Aerospace Engineering, Vol 2019 (2019)
This work attempts to reduce the hub vibratory loads of a lift-offset rotor using IBC (individual blade pitch control) in high-speed forward flight. As a lift-offset rotor for the present study, the rigid coaxial rotor of a XH-59A compound helicopter
Externí odkaz:
https://doaj.org/article/30eb870cb5664e8f9ec0915c8d473e66
Publikováno v:
Shock and Vibration, Vol 2018 (2018)
The panel structures of flight vehicles at supersonic or hypersonic speeds are subjected to combined thermal, acoustic, and aerodynamic loads. Because of the combined thermal and acoustic loads, the panel structure may exhibit nonlinear random vibrat
Externí odkaz:
https://doaj.org/article/f4f916ebdc6b410baa04fdfef7cf4ebd
Publikováno v:
International Journal of Aerospace Engineering, Vol 2018 (2018)
In this research, modal tests and analyses are performed for a simplified and scaled first-stage model of a space launch vehicle using liquid propellant. This study aims to establish finite element modeling techniques for computational modal analyses
Externí odkaz:
https://doaj.org/article/405a4a01b3fc49488317d65875e15d00
Publikováno v:
International Journal of Aerospace Engineering, Vol 2017 (2017)
A validation study on the performance and vibration analyses of the XH-59A compound helicopter is conducted to establish techniques for the comprehensive analysis of lift-offset compound helicopters. This study considers the XH-59A lift-offset compou
Externí odkaz:
https://doaj.org/article/498ef8444b4f4b30b8ec70a3ee25d1e8
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 51:345-353
Autor:
Young-Jun Song, Seong-Do Kim, Chang-Il Roh, San Kim, Jong-Bum Won, Jae-Sang Park, Chul-Ki Song
Publikováno v:
Transactions of the Korean Society of Mechanical Engineers - A. 47:393-399