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13870071
Wall Art and Photo Gifts from Mary Evans Picture Library
13870071
Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries
Media ID 32316906
© Aviation Ancestry
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VISUAL DESCRIPTION
This is a vintage advertisement for the Bristol Pegasus III aircraft engine by The Bristol Aeroplane Co. Ltd. , Filton, Bristol. The image prominently features the radial engine itself, with its complex array of cylinders and exhausts symmetrically arranged around the central hub, showcasing its mechanical intricacy. The text highlights that this particular model has successfully completed an "OVERLOAD TEST" of 300 hours followed by another similar test of 370 hours. It boasts about the engine's robust performance capabilities, stating it can deliver a continuous output of 800 Brake Horsepower (B. H. P. ) at 2, 300 revolutions per minute (R. P. M. ). Additionally, it mentions that under normal output this engine delivers between 665/690 B. H. P. at a slightly lower R. P. M. , with maximum permissible spikes up to approximately 750/775 B. H. P. The ad also points out some technical aspects such as efficient cooling maintained through biplane construction from a three-bladed Fairey metal airscrew weighing 196 lbs and prolonged overhaul testing being standard practice contributing to high standards of reliability. At the bottom, there's an emphasis on quality assurance: "Engines proved to high British Standard by British practice and conforming to the leading foreign standard. " This statement underscores their commitment to international standards in engineering excellence during that era. Overall, this historical document serves not only as an advertisement but also as a testament to early-to-mid-20th-century advancements in aviation technology and engineering prowess showcased by one of Britain's foremost aerospace manufacturers at the time.
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