Dynamic Drag Reduction Effects of Aerospikes and Aerodisks by Rong Han, Wei Liu, Xiaoliang Yang, Xinghua Chang

“…Dynamic characteristics of aerodynamic drag as well as the visualization of unsteady flow fields are achieved, and the results show that the aerodynamics of hypersonic aircraft under the condition of large-amplitude force-pitching vibration have hysteresis characteristics affected by periods of force-pitching vibration. …”
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Estimating Satellite Orbital Drag During Historical Magnetic Superstorms by Denny M. Oliveira, Eftyhia Zesta, Hisashi Hayakawa, Ankush Bhaskar

“…Results show that, as expected, orbital degradation is more severe for the most intense storms. …”
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“Be Proud, and Loud”: Linguistic Markers of Pride in Drag Queens’ Spoken Discourse by Natacha Marjanovic

“…Finally, we highlight how the context of the reality TV show tends to deprive the expression of pride of the political dimension it can have in the drag community.…”
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Mechanism of Drag Reduction in Floating Plate of Paddy Field Based on CFD by Xiaoze Yu, Baofeng Zhang, Jiahan You

“…Using ship mechanics theory and fluid lubrication theory, the drag reduction mechanism under different structural parameters of the floating plate is analyzed. …”
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Optimization and Experimental Testing of the Drag Torque Model Based on the Cavitation Effect by Li Jie, Lian Hailong, Lan Hai, Wang Zhiyong

“…Larger flow rates and smaller gaps will increase the maximum value of the cavitation effect volume fraction. Then, the wet brake drag torque is tested. After comparative analysis, the results show that the prediction error of the optimized model is less than 6%, and the average error is reduced by 55% compared with the model without the cavitation effect. …”
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Drag-Reduction Performance Evaluation of Controllable Hybrid Steering Drilling System by Jianyan Zou, Ping Chen, Tianshou Ma, Yang Liu, Xingming Wang

“…The excessive drag/torque and the backing pressure is an important factor that restricts the improvement of the penetration rate and the extension of the drilling in the sliding drilling process of extended-reach wells and horizontal wells. …”
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Bionic Nonsmooth Drag Reduction Mathematical Model Construction and Subsoiling Verification by Baoguang Wu, Ruize Zhang, Pengfei Hou, Jin Tong, Deyi Zhou, Haiye Yu, Qiang Zhang, Jinsong Zhang, Yuelin Xin

“…In this study, a bionic nonsmooth drag-reducing surface design method was proposed; a mathematical model was developed to obtain the relationship between the altitude of the nonsmooth drag-reducing surface bulges and the spacing of two bulges, as well as the speed of movement, based on which two subsoiler shovel tips were designed and verified on field experiments. …”
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Study on the Drag Torque Characteristic of Underground Unmanned Vehicle Wet Brake System by Zhou Lihong

“…The results show that,with the increase of the oil supply quantity of braking system,the drag torque of all kinds of wet brake friction disk model show an increase trend; the influence of the oil supply quantity change on the drag torque generated by radial oil grooves is more obvious than the spiral oil groove and waffle oil groove; under the condition of high speed,the same external condition,the drag torque generated by radial oil groove is obviously higher than that of the spiral oil groove and the waffle oil groove.…”
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Optimization Design of Low Drag Torque Parameters of High-speed Wet Clutches by Wang Yuxi, Zhao Junsheng, Li Xueming, Gao Weidong, Gong Ke

“…In order to reduce the drag torque under high speed conditions, the equivalent radius is introduced into the traditional low speed torque model of a wet clutch with track vehicle, and the calculation model of the drag torque with radial groove is derived. …”
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Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect by Sun Chunlian

“…With the film thickness decreases,the drag torque is improved,and its peak point corresponds to a higher speed.…”
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Study on aerodynamic drag and noise reduction of high-speed pantograph with streamwise holes by Tian Li, Deng Qin, Xiang Kan, Jiye Zhang

“…The analysis of the aerodynamic force, fluctuating pressure, turbulent kinetic energy and vortex structure of the panhead with or without streamwise holes shows that the panhead with holes has lower aerodynamic drag and noise level. …”
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Analysis of the Influence of Clutch Drag Torque on the Efficiency of Hydro-mechanical Continuously Variable Transmission by Rong Chai, Mingzhu Zhang, Jianhua Wang, Fang Jia

“…The influence of clutch drag torque on the efficiency characteristics of hydro-mechanical CVT is analyzed. …”
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Design optimization of the podded propulsor considering pod housing drag and propulsion motor performance by Yuhang Zhou, Chengjiang Liu, Yao Yan, Quan Chen, Wenliang Ke

“…The Latin hypercube sampling method generated samples of the motor and pod housing for simulation, and radial basis function neural networks were used to create approximate models for the motor performance and pod housing drag. The fitting R2 of motor efficiency, motor power density, propeller hub drag, pod body drag, and pod strut drag of the approximate model reached 0.995, 0.978, 0.920, 0.972, and 0.999, respectively. …”
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Identifying Critical Input Parameters for Improving Drag‐Based CME Arrival Time Predictions by C. Kay, M. L. Mays, C. Verbeke

“…A precise CME direction is critical for impacts near the flanks but not near the CME nose. We also show that the Drag‐Based Model has similar sensitivities, suggesting that these results are representative for all drag‐based models.…”
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STUDY ON DRAG REDUCTION PERFORMANCE OF RAKE FACE TURNING TOOL WITH VARIABLE CURVATURE SURFACE CONFIGURATION by CHEN XiaoFeng, XIE Feng, LEI XiaoBao, GENG Lin

“…The optimization results show that the drag reduction effect is the most obvious when the ratio of the back cutter amount to the front cutter area chord function is about 40% in one cycle. …”
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Steady Glide Dynamic Modeling and Trajectory Optimization for High Lift-to-Drag Ratio Reentry Vehicle by Liang Yang, Wanchun Chen, Xiaoming Liu, Hao Zhou

“…Steady glide trajectory optimization for high lift-to-drag ratio reentry vehicle is a challenge because of weakly damped trajectory oscillation. …”
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Aerodynamic Drag Reduction for a Generic Truck Using Geometrically Optimized Rear Cabin Bumps by Abdellah Ait Moussa, Justin Fischer, Rohan Yadav

“…The numerical technique combines automatic modeling of the add-ons, computational fluid dynamics and optimization using orthogonal arrays, and probabilistic restarts. Numerical results showed reduction in aerodynamic drag between 6% and 10%.…”
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CSO Intelligent Optimization of Drag Torque Parameters of Wet Brakes Based on the SSA-BP Approximate Model by Li Jie, Wang Shuai, Lan Hai, Wang Zhiyong

“…The experimental results show that the drag torque and power loss between the friction pairs after optimization are significantly lower than those before optimization. …”
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Analytical Predictor-Corrector Guidance Algorithm Based on Drag Modulation Flight Control System for Mars Aerocapture by Yu-ming Peng, Bo Xu, Bao-dong Fang, Han-lun Lei

“…The performance and robustness of two different aerocapture control methods are analyzed around Mars exploration, and then an analytic predictor-corrector guidance algorithm for drag modulation flight control system is proposed. …”
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Pomiędzy queerową subwersją a „middle-class mainstreaming”. O twórczości drag queen Mony Lizak by Magdalena Stoch

“…Mona Lizak’s work is also analyzed through categories such as camp, carnival, monstrosity, freek show and rape culture. Ultimately, Mona Lizak’s work is treated as a lens that focuses key discourses of the LGBT+ community, as well as an example of the dynamic interaction between counterculture and capitalist appropriation of queer performance, highlighting her unique place on the Polish drag scene.…”
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