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Stan Proskurov, Markus Lummer, Jan Werner Delfs, Roland Ewert, Jochen Kirz, Martin Plohr and Robert Jaron
Overcoming the problem of excessive engine noise at low altitudes is a formidable task on the way to developing a supersonic passenger aircraft. The focus of this paper is on the fan noise shielding during take-off, investigated as part of the DLR projec...
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Yuji Takubo and Masahiro Kanazaki
Landing of supersonic transport (SST) suffers from a large uncertainty due to its highly sensitive aerodynamic properties in the subsonic domain, as well as the wind gusts around runways. At the vehicle design stage, a landing trajectory optimization und...
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Jan Wislicenus and Nihad E. Daidzic
One of the most difficult steps in estimating the cruise performance characteristics of high-subsonic transport-category turbofan-powered airplanes is the estimation of the transonic wave drag. Modern jet airplanes cruise most efficiently in the vicinity...
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Bin Wang and Qiang Wang
In order to improve the performance of subsonic unmanned aerial vehicle (UAV), a knapsack S-duct intake has been designed. The influences of an S-bend diffuser on aerodynamic performance and electromagnetic performance were analyzed firstly. The viscous ...
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Andrea Aprovitola, Francesco Aurisicchio, Pasquale Emanuele Di Nuzzo, Giuseppe Pezzella and Antonio Viviani
Reduction of atmospheric emissions is currently a mandatory requirement for aircraft manufacturers. Several studies performed on Blended Wing?Body configurations showed a promising capability of reducing fuel consumption by increasing, at the same time, ...
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Michel Nöding and Lothar Bertsch
ICAO Annex 16 regulations are used to certify the acoustic performance of subsonic transport aircraft. Each aircraft is classified according to the measured EPNL levels at specific certification locations along the approach and departure. By simulating t...
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Ye Chen, Zhongxi Hou, Xiaolong Deng, Zheng Guo, Shuai Shao and Boting Xu
The lift of an aircraft can be effectively enhanced by circulation control (CC) technology at subsonic speeds, but the efficiency at transonic speeds is greatly decreased. The underlying mechanism of this phenomenon is not fully understood. In this study...
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Djahid Gueraiche and Sergey Popov
In this article, the growth of aerodynamic efficiency and the growth of the wing structural stress is studied for DLR-F4 typical transport aircraft wing-body, after installing classical Whitcomb winglets of different configurations and a delta wingtip fe...
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