Professor G.T.R. Hill explaining how a variable pitch pr
Professor G.T.R. Hill explaining how a variable pitch propeller works at a Dr Mann Juvenile Lecture at the Royal Society of Arts, Adelphi, 13 January 1937
Picture No
11356086
Media ID
48099577
Size
5254px x 3993px
(3.5MB)
Credit
©The Royal Aeronautical Society (National Aerospace Library)/Mary Evans Picture Library
Source
Photograph from The Royal Aeronautical Society Archive
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Adelphi Explaining Lecture Pitch Propeller Variable
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