Napier Aero Engines. Limited first edition catalogue with One Guinea price.

Napier, Montague, president of D. Napier & Son Ltd

Editore: London: D. Napier & Son Ltd, Acton Vale, London, circa 1924

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Small oblong folio. 32 x 26 cm. Original wrap with red cloth tie and colour pictorial insert. Outer loss on 2 sides of blank border. No, 13 for "Monsieur le Secretaire Général. Text printed on rag paper in English, French and Spanish. 28 sepia photogravure plates with satin finish tissue guards. The catalogue features the newly released Napier Cub , the world's first 1,000 bhp aero-engine and Napier engine design E66 of 1919. The huge 60 litre capacity engine had four rows of four cylinders arranged in a squashed ?X' arrangement. The banks were set at 52.5 degrees (top) ad 127.5 degrees (bottom). This arrangement eased stresses on the crankshaft and made the engine easier to install.Six prototype engines were built for evaluation and one had flight trials in the big Blackburn Cubaroo single engine bomber.The Napier Cub was first run in late 1920. It was the first aircraft engine to surpass the 1,000 hp (746 kW) mark, achieving 1,057 hp (788 kW) at 1,900 rpm during an early test. The second Cub engine built was first run in early 1922. That same year, the Cub was installed in a modified Avro 549 Aldershot I (J6852, the first prototype) and re-designated Aldershot II. The Aldershot was a long-range, heavy bomber bi-plane. It had a 68 ft (20.7m) wingspan, was 45 ft (13.7 m) long, and weighed around 6,200 lb (2,812 kg). The Cub-powered Aldershot II first flew on 15 December 1922, piloted by Bert Hinkler. The Aldershot II continued to fly for about four years before the Napier Cub was removed and another test engine (an 800 hp / 597 kW Beardmore Typhoon) was installed. Codice articolo 51-5137

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Titolo: Napier Aero Engines. Limited first edition ...

Casa editrice: London: D. Napier & Son Ltd, Acton Vale, London, circa 1924

Legatura: Rilegato

Condizione: Good