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Proceedings ArticleDOI: 10.1109/AERO.2014.6836249

Bird strike analysis of jet engine fan blade

01 Mar 2014-pp 1-7
Abstract: Bird strike, also known as avian ingestion, is the collision between a bird and an aircraft. Bird strikes have always been a cause of worry in the aeronautical industry: Aircraft both old and new have suffered from bird strikes. Jet engine ingestion occurs when the bird hits the jet engine of an aircraft and gets sucked in. Given that the fan blades rotate at a high rpm, bird strike on a fan blade causes its displacement into the adjacent blade. This leads to a cascading failure, wherein the entire system fails, thereby resulting in a lot of damage. In this article, we intend to investigate the construction of the fan blade and eventually strengthen its' resistance to bird strikes. more

Topics: Bird strike (75%)

Open accessJournal ArticleDOI: 10.1016/J.PAEROSCI.2015.11.005
Serge Abrate1Institutions (1)
Abstract: This article provides an overview of the literature dealing with three types of soft impacts of concern for the aerospace applications, namely impacts of rain drops, hailstones and birds against aircraft. It describes the physics of the problem as it has become better understood through experiments, analyses, and numerical simulations. Some emphasis has been placed on the material models and the numerical approaches used in modeling these three types of projectiles. more

Topics: Aerospace (53%)

42 Citations

Proceedings ArticleDOI: 10.2514/6.2017-0186
09 Jan 2017-
Topics: Drone (50%)

19 Citations

Proceedings ArticleDOI: 10.1109/ICSSS49621.2020.9202174
23 Jul 2020-
Abstract: Cell phones have become a necessity for many people throughout the world. The ability to keep in touch with family, business associates, and access to email are only a few of the reasons for the increasing importance of cell phones. However, the mobile-phones in early times were bulky, restrictive to only some features and worked only in areas where there was a good connection. All these problems were resolved by integrating a processor within a cell-phone. The processor is the central hub of your smartphone. It receives and executes every command, performing billions of calculations per second. The effectiveness of the processor directly affects every application you run, whether it's the camera, the music player, or just a simple email program. In the following journal, we have discussed the distinctive features, merits, and demerits of the latest mobile phone processors of different Tech companies. more

Topics: Mobile phone (58%)

19 Citations

Proceedings ArticleDOI: 10.1109/ICSSS49621.2020.9202137
23 Jul 2020-
Abstract: The objective of this proposed work is to predict whether the airline crash has occurred due to a bird strike or not by using data mining techniques. Risk and safety are not always guaranteed within the field of aircraft. Bird strikes are dangerous for aircraft due to the relative speed of the plane with reference to the bird. The characteristics of aircraft damage from bird strikes, which is critical enough to make a high risk to continue a safe flight, differs in step with the dimensions of aircraft. Data from the National Transportation Safety Board (NTSB), which records all the aircraft accidents, are used as a training data set for the proposed system. Machine learning is the most effective technology to harnessing the useful information and knowledge from big data. The proposed work intended at building a prediction model using machine learning techniques such as decision trees and Bayesian classifications, which can be very useful in the aviation safety system and is utilized to conjecture the air crafts mishaps ahead of time so that there is an extension to the reduction in aircraft crash rate. The prediction results are range between 80% to 90%. The proposed aircraft crash prediction model is also assessed by using synthetic data sets. more

Topics: Bird strike (60%), Range (aeronautics) (58%), Crash (55%) more

1 Citations

Open accessJournal Article
Abstract: Bird strike otherwise called as avian ingestion is the collision between the bird and the aircraft. It is a very dangerous situation in the field of aviation. Bird strike usually occurs at low altitude during take-off and landing of the aircraft. The bird strike in the jet engine is very dangerous because when a bird hits the fan blade the fan blade is displaced into other fan blade causing the cascading failure. The main objective of this project is to analyze bird strike on the aircraft jet engine Fan blade. Hemispherical Model is used to design the Bird Model. The Canadian goose and GE-NX 2B engine Fan Blade is taken to perform the analysis. The Calculation of the dimensions of the bird model is done. The fan Blade and Bird Model is designed and then assembled using CATIA V5R20. The material Properties is defined for both Bird Model and Fan Blade. The analysis is done and an attempt is made to discuss Deformation, Stress, and Strain on the Fan Blade depending on the Relative Velocity. ANSYS- Explicit Dynamics was used to analyze the Model. more

Topics: Bird strike (72%)


Journal ArticleDOI: 10.1086/112164
Abstract: A finite-size particle scheme for the numerical solution of two- and three-dimensional gas dynamical problems of astronomical interest is described and tested. The scheme is then applied to the fission problem for optically thick protostars. Results are given, showing the evolution of one such protostar from an initial state as a single, rotating star to a final state as a triple system whose components contain 60% of the original mass. The decisiveness of this numerical test of the fission hypothesis and its relevance to observed binaries are briefly discussed. more

Topics: Fission (56%), Protostar (53%), Numerical stability (53%)

4,971 Citations

Journal ArticleDOI: 10.1016/J.COMPSTRUC.2011.08.007
Sebastian Heimbs1Institutions (1)
Abstract: Bird strikes are a major threat to aircraft structures, as a collision with a bird during flight can lead to serious structural damage. Computational methods have been used for more than 30 years for the bird-proof design of such structures, being an efficient tool compared to the expensive physical certification tests with real birds. At the velocities of interest, the bird behaves as a soft body and flows in a fluid-like manner over the target structure, with the high deformations of the spreading material being a major challenge for finite element simulations. This paper gives an overview on the development, characteristics and applications of different soft body impactor modeling methods by an extensive literature survey. Advantages and disadvantages of the most established techniques, which are the Lagrangian, Eulerian or meshless particle modeling methods, are highlighted and further topics like the appropriate choice of impactor geometry or material model are discussed. A tabular overview of all bird strike simulation papers covered by this survey with detailed information on the software, modeling method, impactor geometry, mass and velocity as well as the target application of each study is given in the appendix of this paper. more

Topics: Bird strike (60%), Literature survey (55%)

158 Citations

Open access
01 Jul 1978-
Abstract: : An unsteady, hydrodynamic model of the impact of a low strength projectile on a rigid or semi-rigid target has been developed. Impact tests of various materials including birds, gelatin, and RTV rubber have been conducted to validate this theory. At velocities above 100 m/s, these materials were seen to flow as a fluid upon impact. The resulting impact pressure histories were very similar to those predicted using the model. The impact process was dominated by an initial shock phase which was quickly followed by a release to a steady flow condition. This model should be applicable to the impact of any material for which the shock pressures generated during impact are much greater than the strength of the projectile but are less than the strength of the target. (Author) more

Topics: Shock (mechanics) (55%), Impact pressure (52%), Projectile (52%)

142 Citations

Journal ArticleDOI: 10.1016/J.IJIMPENG.2007.04.008
Shaker A. Meguid1, R.H. Mao1, T.Y. Ng1Institutions (1)
Abstract: Bird strike resistance of aeroengines is a strict certification requirement. Apart from costly experimental bird strike tests, explicit numerical modeling techniques have been employed. However, due to the complicated bird geometry, artificial bird models are still not well defined and it is a perennial problem selecting an appropriate representative artificial bird geometry for the simulations. To examine the relative effects of the artificial bird geometry, explicit 3-D finite element analyses are conducted herein using the commercial code LS-DYNA. As a validation test, we first studied the nonlinear transient dynamic response of an artificial bird striking a rigid flat target. Following the validation, we studied the impact behavior of an artificial bird impinging a flexible aeroengine fan blade. The study focused on the three most-frequently used configurations in the literature: namely, hemispherical-ended cylinder, straight-ended cylinder, and ellipsoid, at various length-to-diameter aspect ratios. The results show that the initial contact area between the bird and target in the early phase of the impact event would have a significant effect on the peak impact force. The aspect ratio of the bird striking both rigid panel and flexible fan blade was found to have little influence on the normalized impact force and impulse. more

Topics: Bird strike (67%)

106 Citations

Open access
01 May 1978-
Abstract: : Birds and aircraft occupy the same air space and collisions between the two are inevitable. As aircraft speeds have increased, the severity and importance of bird/aircraft impact have also increased. As a result, efforts have been made to reduce the probability of collision by controlling the movement of birds and by changing the flight paths of aircraft. These actions can and have reduced the probability of collision but have not eliminated it. Therefore, the Air Force has initiated programs designed to increase birdstrike resistance of aircraft and aircraft components. This report describes a program which was conducted to establish the loads which birds exert on aircraft transparencies in collisions. The loads as derived in this program were to be used as input for the structural analysis computer code of windshield response to bird impact. more

84 Citations

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