Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Chang-Soo Jeon"'
Publikováno v:
International Journal of Precision Engineering and Manufacturing. 16:2395-2401
In this paper both the volumetric displacement and the shaft speed of a variable displacement swash-plate type piston pump were varied in order to minimize power consumption in supplying constant-pressure oil to a valve-controlled hydraulic cylinder,
Autor:
Dae-Seong Jeong, Suk Woo Nam, Chang-Soo Jeon, Hyeon-Jin Kim, Min Jae Lee, Seock-Jae Shin, Ji-Seok Hong, Won-Chul Jung, Hong-Gye Sung
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 41:226-232
A compact hydrogen generation device of fuel cell system using chemical hydride storage technique was designed to fit the propulsion device requirement of a small unmanned aerial vehicle(SUAV). For high efficient, compact, and lightweight hydrogen ge
Autor:
Seock-Jae Shin, Suk Woo Nam, Hong-Gye Sung, Myeong-Hun Sung, Chang-Soo Jeon, Ji-Seok Hong, Jin-Gu Park
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 41:233-239
A 100 W fuel cell system using chemical storage method has been applied for a propulsion system of the SUAV(Small Unmanned Aerial Vehicle). A fuel cell and battery have been combined for both the small/light hydrogen generation control system and the
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 40:662-669
The effect of aspect ratio (AR) on the aerodynamic characteristics of a flapping wing was examined to analyze the design parameters of an insect-based MAV. The experimental model constructed with 4-bar linkages was operated in a water tank with the c
Publikováno v:
Journal of Fluid Machinery. 14:76-84
The effect of inlet velocity profile on the heat transfer coefficient in a rotating smooth channel was investigated experimentally. Three simulated inlet flow conditions of fully developed, uniform, and distorted inlet conditions were tested. The Rey
Publikováno v:
Journal of Fluid Machinery. 14:5-11
In this study, the effect of cone angle of seven-hole probe on the accuracy of measured flow angle and velocity has been investigated. The seven-hole probe consisted of seven 1mm OD stainless inner tubes and one 3mm ID stainless tube. Six cone angles
Publikováno v:
Journal of Fluid Machinery. 13:30-36
The detailed heat transfer coefficients on a rotating dimpled channel were measured by the hue detection based the transient liquid crystal technique. The dimples were fabricated on the one side of the channel and the tested channel aspect ratio was
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 38:586-595
In order to investigate the operating conditions and major design parameters of a dual ramjet propulsion system, an theoretical analysis of ramjet and scramjet propulsion systems was performed. The performance characteristics of each engine are deliv
Publikováno v:
Journal of Fluid Machinery. 12:51-56
The detailed heat transfer coefficient on a rotating dimpled channel were measured using the transient liquid crystal technique. The channel height to dimple diameter was 2, dimple center distance to dimple diameter was 1.5 and channel aspect ratio w
Publikováno v:
Journal of the Korean Society for Aeronautical & Space Sciences. 36:137-145
An experimental study was performed in order to investigate the influence of Reynolds number on the drag coefficient variations of an oscillating airfoil. A NACA 0012 airfoil was sinusoidally pitched at the quarter chord point with an oscillating amp