13880191

Wall Art and Photo Gifts from Mary Evans Picture Library

13880191

Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries

Media ID 32331886

© Aviation Ancestry

VISUAL DESCRIPTION
The image is an educational advertisement by STANAVO about octane ratings in aviation petrol (gasoline) and motor oil dated June 29th, presumably from around or prior to 1932 given its reference to a publication date. It explains how engineers agree that minimizing pre-ignition or "knocking" is crucial for engine performance. Octane number serves as a measure of fuel's resistance to knocking; higher octane numbers indicate greater knock resistance which is vital for aircraft engines' reliability and efficiency. This information would have been particularly important for pilots and mechanics during this period when aviation technology was rapidly advancing.

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