However, wind turbines are advanced machines, subjected to non-stationary operation conditions; therefore, it is basic to promote deeper scientific comprehension of the operation of this know-how. Furthermore, regardless of horizontal-axis wind turbines substantially constituting a mature expertise, new challenges have arisen with the rising measurement of the machines and with the exploitation in advanced environments.

In accordance with the late Dave Holls, then a designer at Cadillac, «We had all our clay models for 1959 completed in early 1956. … [T]hen we saw the 1957 Chryslers. They had been light and recent in look; for the primary time we thought Chrysler had outdone us. We started a revolution, scrapped the existing clays, broke all the principles in the place. …»

There are plenty of other tunnel sorts designed for specific functions. Some designs skip poles or wires for securing the mannequin and стенды для турбин as a substitute use powerful magnets that suspend metallic fashions in the check section. Others present distant control wires that let scientists truly «fly» a mannequin airplane within the test area.