| 摘要 |
The dummy elements (1) are pieces which are backed on to the object to test for measurement of aerodynamic properties. Once the geometry is known that the dummy element has to have on account of flight conditions, atmospheric conditions and the original aerodynamic surface, the shape of the dummy element (1) is reproduced by stereolithography, at the same time forming certain extensions (4) which follow the aerodynamic geometry of the object (3) and which are located in strategically selected positions, the whole acting by way of a negative template which is restricted to and follows the shapes of the leading edge. An adhesive is then applied to the surface of the dummy element (1) without it affecting the extensions (4) since they then have to be removed.
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