Abstract: The use of new advanced high-strength (AHSS) steels is often constrained by the state of the art in related processing and fabrication technologies. These technologies are only beginning to encounter the requirements that these advanced materials bring. Typical examples are joining and, in particular, welding. The latter has a major effect on microstructure evolution and, in turn, on mechanical properties. A common concern is that welding is not at all suitable as the joining technique for a particular application. This is why an experiment has been carried out which involves laser welding of a high-strength Q-P-processed AHS steel. Its results suggest that, by combining these technologies, very good results can be achieved, particularly in components under dynamic loading.

• Publication Date: 27-Sep-2015
• DOI: 10.15224/978-1-63248-072-9-56
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Abstract: The Blended Wing-Body (BWB) aircraft is an unconventional aircraft that offers the aerodynamics performance advantages compared to the conventional aircraft. This type of aircraft has a unique design where the main body is blended together with the wing that gives the additional lift of the aircraft. In contrast to the conventional aircraft, the BWB has a poor stability due to the absence of the tail. A possible solution is by using a horizontal control surface, the canard, to improve the stability of the BWB. For this purpose, a comprehensive investigation of the aerodynamic behavior of the BWB with canard is important. The experimental works were performed on a scale model and tested in a low speed wind tunnel. Angles of attack,  varied from -10 to 10 degree, as well as canard setting angles, . The investigations were carried out at Reynolds Number of 3 x 105. The results show that the canard contributes a small lift forces but with the increase of drag to the BWB. On the stability

• Publication Date: 27-Sep-2015
• DOI: 10.15224/978-1-63248-072-9-61
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• Downloads: 0