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Huamei Chen, Zhigang Zhu, Hao Tang, Erik Blasch, Khanh D. Pham and Genshe Chen
This paper discusses using ground-based imagery to determine the attitude of a flying projectile assuming prior knowledge of its external geometry. It presents a segmentation-based approach to follow the object and evaluates it quantitatively with simula...
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Nezar Sahbon and Michal Welcer
The accuracy of aerodynamically controlled guided projectile simulations is largely determined by the aerodynamic model employed in flight simulations which impacts vehicle interaction with the surrounding air. In this work, the performance of projectile...
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Lite Zhang, Chengwei Zhang, Huixia Jia and Ruoling Dong
In this paper, the supercavitation of the parallel and tandem projectiles moving underwater with high-speed under the condition with/without lateral flows is numerically simulated by the volume of fraction (VOF) model. The motion of the projectiles was h...
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Lite Zhang, Zhuokai Wang and Huixia Jia
The study of the water entry of successively fired projectiles under a wave environment is of great significance for the development and application of supercavitation weapons. In this paper, the supercavitating flow field of two successively fired proje...
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Qi Liu, Juanmian Lei, Yong Yu and Jintao Yin
The bending deformation can affect the lateral force of spinning projectiles with large aspect ratios, thus interfering with their flight stability. Based on the established spin?deformation coupling motion model, the unsteady Reynolds averaged Navier?St...
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Yufang Wang and Nannan Wang
The effects of projectile rotation on the internal and external flow fields of the supersonic fluidic element are numerically studied using sliding grid technique and the RNG k-e turbulence model. The effects of rotating speed on internal and external fl...
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Zhanlin Feng, Kuanliang Wang and Honghui Teng
This study numerically investigates the effects of diluent gas proportion, the overdrive factor, and throat width on the wave structure and thrust performance of a ram accelerator operating in super-detonative mode. For premixed gas of a high energy dens...
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Yongchan Kim, Junyeop Nam, Tae-Seong Roh and Hyoung Jin Lee
Base drag has a significant effect on the overall drag of a projectile in a supersonic flow. Herein, the base drag and flow characteristics of cold and hot gas flow in a supersonic flow are analyzed via numerical simulations. The hot gas flow is simulate...
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Pradeep Kumar Pavalavanni, Min-Seon Jo, Jae-Eun Kim and Jeong-Yeol Choi
An unstable shock-induced combustion (SIC) case around a hemispherical projectile has been numerically studied which experimentally produced a regular oscillation. Comparison of detailed H2/O2 reaction mechanisms is made for the numerical simulation of S...
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Haojie Zhu, Mou Chen, Zengliang Han and Mihai Lungu
This paper concerns the fire-control command calculation (FCCC) of an unmanned autonomous helicopter (UAH). It determines the final effect of the UAH attack. Although many different FCCC methods have been proposed for finding optimal or near-optimal fire...
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