ON landing on an aerodrome by day, a pilot must be flying into the wind in order to reduce velocity when he actually first touches ground, and therefore he requires to know in which direction the wind is blowing.
Wraith, M.H.O. (1930), "Illuminated Wind Indicators: Characteristics of the Latest Type Evolved and a Discussion of Probable Future Developments and Requirements", Aircraft Engineering and Aerospace Technology, Vol. 2 No. 2, pp. 34-41. https://doi.org/10.1108/eb029234Download as .RIS
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