Year: 2024
Type: article
Abstract: A three-component stress-wave force balance system for thrust measurement of scramjet model in a shock tunnel was designed.To isolate the system from external disturbances, an aerodynamic shield and vibration isolation mounts were used.Stress bars containing strain gauges were installed between the model and vibration isolation mounts.The system was calibrated and applied for shock tunnel tests under Mach 6 flow condition to verify the feasibility of thrust measurement.To simulate the thrust environment, nitrogen was injected at a 6-degree angle relative to the freestream direction.Test results showed that, when nitrogen was injected compared to when it was not, the lift and moment increased by 1.9 N and 1.3 N•m, respectively, and drag decreased by 19.2 N. Consequently, the nitrogen injection angle was measured at 5.7 degrees, and the thrust was calculated to be 19.3N. 초 록 충격파 터널에서 스크램제트 모델의 추력을 측정하기 위한 삼분력 응력파 힘 평형 기법이 적용된 시스템을 설 계하였다.외부 교란으로부터 시스템을 차단하기 위해 공력 실드와 방진 마운트를 사용하였고, 모델과 방진 마운 트 사이에 스트레인 게이지를 포함하는 응력 막대를 설치하였다.시스템을 교정한 이후, 마하수 6
Authors: Byeongjae Jeong, Keunyeong Kim, Gisu Park
Institution: Korea Advanced Institute of Science and Technology
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4404194032