13872517

Wall Art and Photo Gifts from Mary Evans Picture Library

13872517

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

Media ID 32320690

© Aviation Ancestry

VISUAL DESCRIPTION
In this historical advertisement from D. Napier & Son Limited, we are presented with two engines: at top is a pre-war "70 h.p GNOME," representing earlier aircraft propulsion technology; below it is "THE NAPIER-HALFORD 'DAGGER'," showcasing progress made over a quarter century of air-cooled aircraft engine development. By juxtaposing these two engines—the radial GNOME against their newer H-shaped DAGGER—the ad illustrates technological strides made in power output and design sophistication while emphasizing continuity in innovation from one generation to the next.

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