A5102882005- Rocket and propulsion systems research
- Energetic Materials and Combustion
- Combustion and Detonation Processes
- Computational Fluid Dynamics and Aerodynamics
- Nuclear Engineering Thermal-Hydraulics
- Metal and Thin Film Mechanics
- Thermal and Kinetic Analysis
- Spacecraft and Cryogenic Technologies
- Tribology and Lubrication Engineering
- Advanced materials and composites
- Aerospace Engineering and Control Systems
- Fluid Dynamics and Heat Transfer
- Advanced machining processes and optimization
- Tribology and Wear Analysis
- Radiative Heat Transfer Studies
- Fluid Dynamics Simulations and Interactions
- GNSS positioning and interference
- Underwater Vehicles and Communication Systems
- Powder Metallurgy Techniques and Materials
- High-Velocity Impact and Material Behavior
- Diamond and Carbon-based Materials Research
- Adhesion, Friction, and Surface Interactions
- Optical Systems and Laser Technology
- Metal Alloys Wear and Properties
- Aerodynamics and Acoustics in Jet Flows
Beijing Institute of Technology
2015-2024
Tianjin University
2019-2024
Aerospace Technology Institute
2022
China Earthquake Administration
2012-2014
Shandong University
2012-2014
Shanghai Jiao Tong University
2011
Wuhan University
2009-2010
Central South University
2006
The evolution of interfaces for underwater gas jets is the main morphological manifestation two-phase unstable interaction. high-speed transient photographic recording and image post-processing methods are used to obtain interfacial change in a submerged gaseous jet at different stages after its ejection from Laval nozzle exit. relationship between pressure pulsation wake flow field further analyzed by combining experimental results with computational results. A theoretical model employed...
This study delves into the machining defects encountered during milling of Carbon Fiber Reinforced Plastics (CFRP), with a special focus on fishbone-like cracks machined surface, which have never been focused before. Through series experiments, models for post-machining fiber burrs and matrix were developed analyzed, uncovering causes fishbone crack formation. The research reveals that formation mechanisms vary orientation, are not only from bending under tool pressure but also buckling....
The infrared radiation signature of the plume from solid propellants with different energy characteristics is not same. Three kinds double-base are chosen to measure spectral radiance 1000 cm−1 4500 their plumes. radiative spectrum obtained in tests. experimental results indicate that determined by propellant. transfer calculation models exhaust for established. By including chemical reaction source term and into equation, field solved a coupled way. calculated consistent data, so...
To improve understanding of the combustion properties agglomerate-reduced propellants under solid rocket motor conditions and to compare their between combustor conditions, have been subjected a series contrastive experiments. The burning agglomerate particle size, ablation, composition residue, efficiency studied compared with data obtained high-pressure conditions. results indicate that, both in chamber, propellant efficiently reduced size ablation insulation material, it promoted higher...
Gaseous jet injected into liquid typically occurs in underwater propulsion. The flow is unsteady and turbulent; the high density ratio between water gas can induce many complicated phenomena. To investigate propulsion performance, analytical bubble model which has been widely used to predict thrust of engine summarized. In this model, assumed form a conservative system, so that work done on by equal sum kinetic potential energies stored water. assess validity approximate detailed...
Abstract To verify a hypothetical failure cause of gun‐launched missile's solid rocket motor (SRM) under conditions high environmental temperatures and overloaded forces up to 6000∼12000 g, experiments simulations were conducted new criterion variable was proposed. Uniaxial compression tests the composite modified double base (CMDB) propellant used in missile carried out at low intermediate strain rates 50 °C characterize CMDB propellant's dynamic properties. The Schapery nonlinear...
Vertical ionograms suffer from artifacts and distortion due to other users of the high-frequency channel ionosphere. The traces each layer have variable shapes, so automatic scaling vertical is rather complicated. New algorithms for signal identification trace extraction are developed support scaling. Different features signals, such as signal-to-noise ratio, Doppler shift, virtual height, converted certainty factors combined identify signals. Kalman filtering, which widely used in...