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2 Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2 2001

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High performance PW-8 design a case study of an ultralight composite structure

Dąbrowski P., Jaśkowski P.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2001

nr 12

117-122

The idea of designing and constructing a high performance PW-8 has flourished among a group of last-year students, who have decided to make their diploma projects in this field. The PW-8 project has emerged from the ULS (Ultra-Light Sailplane) project, which has been realised at Warsaw University of Technology since 1978. For students, the ULS project has been providing an opportunity to get in touch with a real engineering activity comprising conceptual and preliminary design, design of structure, design of manufacturing process, construction, flight and ground tests, and gathering operational experience during the period of studying. As a result of that activity five gliders and one motorglider have been designed, constructed and successfully tested. Three of them; PW-2 "Gapa" PW-5 "Smyk" and PW-6 gliders have obtained the type certificate. According to the FAI sport code the micro-light designs are classified into the following three categories: o aircraft, the maximum weight of which should not exceed 450 kg (for two-seater) or 300 kg (for one-seate) and while the stalling speed should not exceed 65 kph; o powered hang gliders; o powered paragliders or paraplanes;

Development of complex aircrafturfaces using spline curves

Leonavicius K.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2001

nr 11

139-144

The paper presents a simple designing method for complex 3D airplane models. The spline curves are employed to model both the contour and cross sections. The surface model may be shaped and easily changed using 3D isolines. This method is very efficient for the light and sport aircraft because of complexity of their geometry.