Results 21 to 30 of about 72,125 (260)

Numerical study on throttling characteristics of RBCC engines in ejector mode

Case Studies in Thermal Engineering
Investigating the throttling characteristics of Rocket-Based Combined Cycle (RBCC) engines in ejector mode is crucial for adapting to varied flight mission demands.
Jikai Chen, Peibo Li, Bin An, Mingbo Sun, Changhai Liang, Taiyu Wang, Jiaoru Wang, Menglei Li, Yu Xie, Yizhi Yao   +9 more
doaj   +1 more source

The spray characteristic of gas-liquid coaxial swirl injector by experiment

MATEC Web of Conferences, 2017
Using the laser phase Doppler particle analyzer (PDPA), the spray characteristics of gas-liquid coaxial swirl injector were studied. The Sauter mean diameter (SMD), axial velocity and size data rate were measured under different gas injecting pressure ...
Chen Chen, Zhihui Yan, Yang Yang, Hongli Gao, Shunhua Yang, Lei Zhang   +5 more
doaj   +1 more source

Light modulation in phoxonic nanocavities [PDF]

, 2011
We report on the occurrence of strong nonlinear acousto-optic interactions in phoxonic structures, that support, simultaneously, acoustic and optical localized resonant modes, under the influence of acoustic losses.
Bonello, Bernard, Djafari Rouhani, Bahram, Laude, Vincent, Papanikolaou, Nikos, Psarobas, IE, Stefanou, Nikos   +5 more
core   +1 more source

Coupled Fluid–Structure–Acoustic Analysis of Flow‐Induced Noise Control Using an Elastic Baffle in a Micro Channel

Energy Science &Engineering, EarlyView.
This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi, Seyed Esmail Razavi, Shams Forruque Ahmed, Khashayar Fardnia, Aydin Qheydarpoor, Hammad Alotaibi   +5 more
wiley   +1 more source

Parametric study of flow and heat transfer characteristics in a regenerative cooling channel with crescent-shaped ribs under non-uniform heat flux

Results in Engineering
Regenerative cooling technology is key for scramjets to cope with extreme thermal loads during operation. Non-uniform heat flux, as an important feature of the propulsive combustion system, poses a serious challenge to the optimization of regenerative ...
Zechuan Yi, Taiyu Wang, Yifeng Yao, Peibo Li, Mingbo Sun, Jikai Chen, Bin An, Changhai Liang, Jiaoru Wang, Menglei Li, Yu Xie, Decong Zhang, Kai Yang, Qi Liu   +13 more
doaj   +1 more source

A Review of Aerodynamic Design for Wide-Speed Range Waverider Vehicle [PDF]

Hangkong bingqi
As a hypersonic aerodynamic configuration that can break through the lift-drag ratio barrier, waverider configuration is an important candidate for wide-speed reusable aircraft. Therefore.
Wang Chenhang, Jin Liang, Zhao Zhentao, Xie Zan, Huang Wei
doaj   +1 more source

A Robust Control Method for the Trajectory Tracking of Hypersonic Unmanned Flight Vehicles Based on Model Predictive Control

Drones
Hypersonic unmanned flight vehicles have complex dynamic characteristics, such as nonlinearity, strong coupling, multiple constraints, and uncertainty.
Haixia Ding, Bowen Xu, Weiqi Yang, Yunfan Zhou, Xianyu Wu   +4 more
doaj   +1 more source

The Effect of Fuel Injection on the Combustion Characteristics of Gas-Solid Two-Phase Gas [PDF]

Hangkong bingqi
Fuel injection significantly affects the combustion characteristics of gas-solid two-phase gas in solid rocket scramjet. The effects of fuel equivalent ratio and fuel injection port arrangement on the combustion characteristics of gas-solid two-phase gas
Zhao Libei, Ma Likun, Xia Zhixun, Feng Yunchao, Chen Binbin, Liu Yandong
doaj   +1 more source

Variant wing scheme and aerodynamic characteristics analysis of hypersonic vehicle

Hangkong gongcheng jinzhan, 2023
The variant aircraft can change its shape to adapt to different flight states and improve aerodynamic properties of aircraft. Aiming at a new hypersonic vehicle concept machine, the applicability of the wing variable sweep design on this hypersonic ...
ZHANG Xin, JI Hongli, ZHOU Danjie, LIU Yi, HE Chengjun, QIU Jinhao   +5 more
doaj   +1 more source

Dynamic sound attenuation at hypersonic frequencies in silica glass

, 2006
In order to clarify the origin of the dominant processes responsible for the acoustic attenuation of phonons, which is a much debatted topic, we present Bril louin scattering experiments in various silica glasses of different OH impurities content.
C. Laermans, C. Levelut, H. J. Maris, J. Bucaro, J. Pelous, R. Le Parc, S. Hunklinger   +6 more
core   +2 more sources