Environmental Engineering Reference
In-Depth Information
The first row of numbers is the frontal area of the blades.
The second row is the corresponding power. Millwright Sørensen
received his patent, which was the best known at the time. This
encouraged him to build the new mill on top of a new stone building.
The building itself was designed by a young architect P. V. Jensen-
Klint, who later became famous church architect. Today the stone
building houses the Poul la Cour Museum.
Figure 4.10
The new laboratory mill building from 1897 with millwright
Sørensen's conical rotor.
4.5
Further Aerodynamic Research
Poul la Cour aimed to continue his research in order to find what
he called the ideal sail. He wondered why in earlier times mathe-
maticians and physicists such as Bernoulli, Maclaurin, d'Alembert,
Euler, Lambert and Smeaton had all propagated a completely
incorrect formula. An example of what will go wrong, he claimed,
when “the starting point is rational thinking followed by trying
to force the real world to fit into a formula with the best choice of
constants”.
3
Their excuse of course was that they did not have the
unique test facilities that Poul la Cour had developed.
In the machinery hall la Cour installed two wind tunnels of his
own design and invented a unique apparatus for measuring the
3
For example, 0.0338.
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