[HTML][HTML] Progress in helicopter infrared signature suppression

J Zhang, C Pan, Y Shan - Chinese Journal of Aeronautics, 2014 - Elsevier
Due to their low-attitude and relatively low-speed fight profiles, helicopters are subjected to
serious threats from radio, infrared (IR), visual, and aural detection and tracking. Among …

Experimental study on flow field characteristics of TBCC multibypass combustor

W Zhao, W Fan, R Zhang - Aerospace Science and Technology, 2023 - Elsevier
The turbine-based combined cycle (TBCC) engine, as a hypersonic air-breathing propulsion
system, involves the transition between multiple bypasses during flight. During the transition …

Time-resolved stereoscopic particle image velocimetry investigation of the entrainment in the near field of circular and daisy-shaped orifice jets

M El Hassan, A Meslem - Physics of Fluids, 2010 - pubs.aip.org
The flow in the initial region of two jets, namely, a circular orifice jet and a lobed orifice jet, is
considered in the present paper. The role played by the Kelvin–Helmholtz (KH) azimuthal …

Mechanisms of lobed jet mixing: About circularly alternating-lobe mixers

Z Sheng, J Liu, Y Yao, Y Xu - Aerospace Science and Technology, 2020 - Elsevier
Two configurations of circularly arranged alternating-lobe nozzles were adopted to form
lobed mixers with/without a mixing duct. The jet mixing of each mixer was numerically …

Study of the mixing characteristics of a multibypass combustor of a turbine-based combined cycle

W Zhao, W Fan, R Zhang - Applied Thermal Engineering, 2023 - Elsevier
When the multimode and multibypass turbine-based combined cycle (TBCC) engine
performs mode transition, it involves switching between multiple bypasses. During the …

Mixing and combustion augmentation of the RBCC with different mixer configurations in ejector mode

H Chao, Y Huanli, D Jian - Acta Astronautica, 2020 - Elsevier
Achieving mixing and combustion augmentation of air and rocket exhaust gases become a
crucial issue in RBCC ejector mode, in which the mixer is an effective way to improve mixing …

The influence of the lobed ejector on the horizontal axial tidal turbine and flow characteristic analysis

Y Wang, P Wang, L Wang, Y Gong, B Huang - Ocean Engineering, 2023 - Elsevier
The power coefficient of the horizontal axis tidal turbine (HATT) is limited to 0.593 by the
Betz limitation, however, the turbine's efficiency can be improved by incorporating a diffuser …

Evolution characteristics of subsonic-supersonic mixing layer impinged by shock waves

K Ma, J Li, Q Li, Y Liu, X Li, D Ma, W Ao - Aerospace Science and …, 2020 - Elsevier
The study of interaction between shock wave and mixing layer commonly existed in rocket
based combined cycle engine is of profound significance for mixing enhancement in …

Influence of a double-mixer configuration on the mixing and combustion characteristics of a multibypass combustor for a turbine-based combined cycle engine

W Zhao, W Fan, R Zhang - Energy, 2024 - Elsevier
The changes in the flow field and combustion characteristics induced by the mode transition
process of a turbine-based combined cycle (TBCC) engine may lead to failure of the mode …

Numerical investigation of scalloping effect on lobed nozzle flow features and thermal mixing performance

R Hou, Y Hong - Aerospace Science and Technology, 2023 - Elsevier
The lobed nozzle is usually used in the exhaust system of military helicopters to improve
survivability. The thermal and flow characteristics of the lobed mixer with and without the …