New Zealand Agricultural Engineering Institute2025-02-102025-02-1019720113-4507https://hdl.handle.net/10182/18078For a general description of the test procedure and equipment used in the tests see N.Z.A.E.I. Project Report P/5. In addition wind direction during the tests was continuously monitored with a Gill Microvane and Heath Recorder. A low torque cup anemometer was used to measure wind speed, and applicator height during test passes was established with a theodolite.en© NZAEIWhirl-Wide helicopterDiscussion PaperANZSRC::409901 Agricultural engineering