"Balanced expert perspective available fromour huge archive dating back to 1985"
1 July 1995
Correction: A photograph of a rotor used last month to illustrate a feature article on blade manufacturer Aerpac was incorrectly captioned. The photograph was of blades for the experimental Flexhat rotor tested by the Dutch national laboratory, ECN, at Petten, and not of blades for an Enercon E40, as stated. The Flexhat rotor has partial passive pitch control. We apologise for the error. Ed.
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