Article
Chemistry, Multidisciplinary
Bin Wu, Reza Hedayati, Zhehua Li, Mahsa Aghajanpour, Guichang Zhang, Junhong Zhang, Jiewei Lin
Summary: This study used an SPH mallard bird model to simulate bird impact to rotary aero-engine fan blades and investigated the effects of various impact and bearing parameters. The results showed that impact location and bird orientation significantly influence the bird strike outcomes, with bird impact to blade roots being the most dangerous scenario.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Bin Wu, Jiewei Lin, Reza Hedayati, Guichang Zhang, Junhong Zhang, Lipeng Zhang
Summary: The study investigated the impact of bird strikes on the rotor system of an aircraft engine, showing that bird strikes lead to transient shocks in the rotor system, resulting in sharp increases in displacement and vibration amplitude. The dynamics of the rotor system transition from stable periodic motion to irregular quasi-periodic motion after a bird strike, with resonance being a possible outcome that may damage the engine. The study also found that the impact force and effects on the rotor system increase with engine rotational speed, with higher speeds resulting in larger peak forces and more peaks in the force curve.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Aerospace
Bin Wu, Jiewei Lin, Anshun Xie, Ning Wang, Guichang Zhang, Junhong Zhang, Huwei Dai
Summary: This study investigates the impact of bird strikes on engine blades in aviation accidents using simulation methods. The results show that the severity of bird strikes is related to the impact location distribution, with blade-root impacts being the most dangerous. Small flocking bird strikes have minimal effect on the fan compared to medium flocking birds and large single birds.
Article
Materials Science, Characterization & Testing
Gobinath Velu Kaliyannan, Raja Gunasekaran, Meenakshipriya Balasubramaniam, Anand Ayyanvalasu Theivasamy, Krupha Shankar Karunakaran
Summary: Bird strike is one of the most hazardous accidents in jet engines, causing deformation and malfunction of blades and other components. Numerical calculations and software simulations are now used for bird strike analysis. This study focuses on developing W-Cr coated jet engine blades as an alternative to the existing Ti-Ni coated blades. HRTEM and FESEM were used to analyze the surface morphology, microstructure, and hardness of W-Cr.
Article
Engineering, Multidisciplinary
Sharis-Shazzali Shahimi, Nur Azam Abdullah, Meftah Hrairi, Ameen Topa, Ahmad Faris Ismail
Summary: This study numerically investigates the damage to a rotating engine blade caused by a bird strike impact. The numerical modelling reveals that the rotation of the blade generates initial stresses on the blade's root, which can cause severe damage. The researchers further investigate the damage assessment of engine blades with porosity due to the impact of bird strikes.
IIUM ENGINEERING JOURNAL
(2022)
Article
Engineering, Aerospace
Junjie Li, Yunfeng Lou, Xianghai Chai, Zhiqiang Ma, Xianlong Jin
Summary: This study developed a numerical model to analyze bird strikes on a jet engine, established substitute bird models validated with experimental and theoretical results, derived critical ingestion parameter, and investigated the impact of single-bird-ingestion requirements on the engine. Incorporating predictive modeling methodology into engine designs is of great significance for engine manufacturers.
JOURNAL OF AIRCRAFT
(2022)
Article
Engineering, Aerospace
Sunil K. Sinha
Summary: This paper presents a semiclosed-form physics-based rotordynamic analysis for determining bird-strike load in a rotating fan shaft, considering inertial effects and circulatory terms. The numerical simulation shows the impulsive load generated by bird-strike traveling through the entire engine support structure. The study provides nonlinear transient dynamic numerical results for relevant dynamical design parameters, indicating the dynamic magnification factor for vibratory response can be as much as 3 times the normal steady-state response.
JOURNAL OF AEROSPACE ENGINEERING
(2021)
Article
Engineering, Aerospace
Sharis-Shazzali Shahimi, Nur Azam Abdullah, Meftah Hrairi, Meor Iqram Meor Ahmad
Summary: The study conducted a numerical investigation on engine blades subjected to bird strike, showing structural damage and deflection. The model also considered the impact of different bird velocities and blade rotation speeds on the damage.
JOURNAL OF AERONAUTICS ASTRONAUTICS AND AVIATION
(2021)
Article
Engineering, Multidisciplinary
Hamidreza Rostami, Firooz Bakhtiari-Nejad
Summary: This research aims to develop and analyze a model of rotating cantilever orthotropic blade with adjustable stagger angle, investigating its dynamic stability using various methods and evaluating the influence of different parameters. The results are validated and discussed to understand the dynamic response characteristics of the system under different conditions.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Engineering, Mechanical
Alparslan Solak, Birgul Ascioglu Temiztas, Berna Bolat
Summary: This study proposes a honeycomb with a sine waveform to increase the impact resistance against bird strike on the vertical stabilizer leading edge. Experimental and numerical analysis were conducted to validate the model, and the results show that the honeycomb with a sine waveform can improve the deformation and resistance to bird strike, which is important for the field.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Engineering, Aerospace
Mohd Hasrizam Che Man, Hu Liu, Kin Huat Low
Summary: The study compares the severity of damage to commercial manned aircraft engines caused by drone collisions and bird strikes, finding that drone collisions result in more severe damage. Different methods were used for simulations of drones and birds, and the effect of kinetic energy from different weight categories on damage was considered.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
(2022)
Article
Engineering, Mechanical
Xiaopeng Chen, Biao Yin, Zhongbin Tang, Jun Liu, Haiyang Zhang, Chao Zhang, Yulong Li
Summary: Bird strikes on engine blades are a major concern for aviation safety. This study investigated the slicing process during bird strikes using a wedge-Hopkinson bar system. The results showed that the peak impact force and equivalent impact force remained constant with increasing impact velocity, but the ratio of momentum transfer decreased.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Energy & Fuels
Shengbing Zhou, Yuan Ma, Feng Liu, Ning Hu
Summary: This paper investigates the short-time pulse operation characteristics of a rotating detonation rocket engine through experiments. Results show that the engine can achieve continuous rotating detonation modes at pulse operating frequencies of 1-5 Hz, regardless of the pulse frequency's impact on the propagation mode and velocity of the detonation wave. The experiment also successfully verifies the feasibility of long-duration multi-pulse operation with rotating detonation mode.
Article
Materials Science, Composites
Sho Kajihara, Ryo Higuchi, Takahira Aoki, Shinya Fukushige
Summary: This paper investigates the peripheral fracture of composite fan blades made of CFRP under bird strike by developing a finite element analysis model. The analysis reveals the vibration behavior and strain distribution of the fan blades, which are influenced by the impact location and rotation.
ADVANCED COMPOSITE MATERIALS
(2023)
Article
Engineering, Mechanical
E. Giannaros, A. Kotzakolios, V Kostopoulos, G. Sotiriadis, R. Vignjevic, N. Djordjevic, M. Boccaccio, M. Meo
Summary: The aerospace industry requires the use of high-performance composite materials to enhance structural efficiency, however, these composite structures are prone to damage from high-speed impact events. Early detection of damage in composite structures is crucial. This study develops computational models to predict dynamic behavior of helicopter composite sandwich structures undergoing bird strike, to be used as virtual tools for future fault detection techniques.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Engineering, Aerospace
Andre F. P. Ribeiro, Carlos Ferreira, Damiano Casalino
Summary: This study compares a filament-based free wake panel method to experimental and validated numerical data in order to simulate propeller slipstreams and their interaction with aircraft components. The results show that the free wake panel method is able to successfully capture the slipstream deformation and shearing, making it a useful tool for propeller-wing interaction in preliminary aircraft design.
AEROSPACE SCIENCE AND TECHNOLOGY
(2024)
