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Huawei Sun, Anran Ju, Wentian Chang, Jingfei Liu, Jiayi Liu and Hanbing Sun
Assessing the safety of amphibious aircraft hinges significantly on two key factors: wave-added resistance and motion stability during takeoff and landing on water surfaces. To tackle this, we employed the Reynolds-averaged Navier?Stokes (RANS) equations...
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Marc Zarnekow, Thomas Grätsch and Frank Ihlenburg
This paper proposes an efficient hybrid analytical-computational approach for the simulation of mechanical vibrations and sound radiation in wind turbine drive trains.The computational procedure encompasses the detailed modeling of vibrational sources an...
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Kamesh Sankaran, Scott A. Griffith, Noah C. Thompson, Matthew D. Lochridge and Andrew S. O?Kins
A streamlined genetic algorithm was developed and implemented on a GPU to evaluate low-thrust trajectories of spacecraft propelled by an ion thruster. It was then applied to examine the utility of a specific thruster for an asteroid impact mission. This ...
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Muwanika Jdiobe, Kurt Rouser, Ryan Paul and Austin Rouser
This paper presents an approach to validate a wind tunnel propeller dynamometer applicable to Group 2 unmanned aircraft. The intended use of such a dynamometer is to characterize propellers over a relevant range of sizes and operating conditions, under w...
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Patrick Meyer, Sebastian Lück, Tobias Spuhler, Christoph Bode, Christian Hühne, Jens Friedrichs and Michael Sinapius
High aspect ratio aircraft have a significantly reduced induced drag, but have only limited installation space for control surfaces near the wingtip. This paper describes a multidisciplinary design methodology for a morphing aileron that is based on pres...
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Abhay Patil, Sujan Gudigopuram, Burak Ayyildiz, Adolfo Delgado and Gerald Morrison
A four stage helicoaxial pump was tested under varying operating conditions. A range of inlet pressures, rotational speeds (3000, 3600 rpm), and gas void fractures (GVFs) were considered for two fluid viscosities. The head developed and power input to ru...
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Riccardo Licciardello, Gabriele Malavasi, Antonio Tieri, Pietro Vitali
Pág. 1996 - 2005
Railway sidings are operated at speeds much lower than those used on national railway lines; a typical speed is 6 km/h. In establishing reference values for maintenance of railway infrastructure in terms of the geometry for such operating conditions, it ...
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Chi-Jeng Bai, Wei-Cheng Wang, Po-Wei Chen and Wen-Tong Chong
In designing a horizontal-axis wind turbine (HAWT) blade, system integration between the blade design and the performance test of the generator is important. This study shows the aerodynamic design of a HAWT blade operating with an axial-flux permanent m...
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