TOP SECRET, a semi-rigid hang glider is currently being designed and built by Lai Mouette S.A., Dijon, France. This paper outlines the aerodynamic design of TOP SECRET. The 2D airfoil was analysed using EPPLER (Prof Richard Eppler, University of Stuttgart) and XFOIL (Prof. Mark Drela, M.I.T.) software. Analysis on the 3D wing was done using Wessinger Extended Lifting Line Theory. The objective was to find the best linear twist angle distribution from root to tip to give the highest Lift/Induced Drag ratio. This is called the Minimum Induced Drag Criteria. The linear distribution was chosen to make construction easy and cheap. Validation using Lifting Surface Theory (Software SURF, Herve Bezard, ONERA) was also done for a “constant chord” and “no twist” wing. The best linear twist is 0° at root and 6° at tip. TOP SECRET was benchmarked against PEGASUS (Germany), a proven semi-rigid hang glider. At the same time, FLUENT computational fluid dynamics software was used to get the polars of the aerofoil for TOP SECRECT and the results was in agreement with the results from EPPLER and SURF.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Creators: | Creators Email / ID Num. Md.Zain, Zaidi UNSPECIFIED Mohamad, Nazri UNSPECIFIED Sapari, Suhaime UNSPECIFIED Mat Taib, Che Faridah UNSPECIFIED Ma’som, Nor Azizah UNSPECIFIED |
| Subjects: | Q Science > QA Mathematics > Numerical simulation. Monte Carlo method Q Science > QA Mathematics > Analysis > Analytical methods used in the solution of physical problems T Technology > TL Motor vehicles. Aeronautics. Astronautics > Aeronautics. Aeronautical engineering |
| Divisions: | Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC) > Institute of Research, Development and Commercialization (IRDC) > Bureau of Research and Consultancy |
| Event Title: | INSIGHTS Seminar 2002 |
| Event Dates: | 24-25 August 2002 |
| Page Range: | pp. 152-160 |
| Keywords: | Aerodynamic design, Semi-Rigid hang glider, Air foil analysis, Lift-to-Drag Ratio, Computational Fluid Dynamics (CFD) |
| Date: | 2002 |
| URI: | https://ir.uitm.edu.my/id/eprint/143100 |
- Edit Item
![[thumbnail of 143100.pdf]](https://ir.uitm.edu.my/style/images/fileicons/text.png)
143100.pdf
