Wright Cyclone P-1, Radial 9 Engine
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[{"label": "Date", "content": "Circa 1925"}], "identifier": [{"label": "Inventory Number", "content": "A19710881000"}], "notes": [{"label": "Physical Description", "content": "Type: Reciprocating, 9 cylinders, radial, air cooled"}, {"label": "Physical Description", "content": "Power rating: 303 kW (406 hp) at 1,650 rpm"}, {"label": "Physical Description", "content": "Displacement: 27.1 L (1,654 cu in.)"}, {"label": "Physical Description", "content": "Bore and Stroke: 152 mm (6.0 in.) x 165 mm (6.5 in.)"}, {"label": "Physical Description", "content": "Weight (dry): 368 kg (812 lb)"}, {"label": "Summary", "content": "About the middle of 1923, the U.S. Navy signed a contract with Wright Aeronautical for three large air-cooled engine designs, which were to be built successively. The first of these, based on a design proposed earlier to the U.S. Army by Charles Lawrance, was known as the P-1, and was the direct forerunner of the highly successful Wright Cyclone series of engines. In order to reduce aerodynamic drag, its design was limited to a frontal area no greater than that of the Navy's Lawrance J engine, despite the fact that the P-1 had twice the displacement."}, {"label": "Summary", "content": "The P-1 was tested extensively in 1924 in a Douglas DT-2 aircraft, and flown successfully in the Navy Douglas DT-6 and Boeing aircraft. However, magnesium alloy castings, being used for the first time, failed in endurance tests. The P-1 was then discontinued in favor of the larger P-2, which added Heron-type cylinders and a supercharger."}], "creditLine": [{"label": "Credit Line", "content": "Transferred from the U.S. Navy"}], "name": [{"label": "Manufacturer", "content": "Wright Aeronautical"}], "place": [{"label": "Country of Origin", "content": "United States of America"}], "physicalDescription": [{"label": "Materials", "content": "Steel, Aluminum, Brass, Copper, Cadmium plating, Paint, Preservative coating, Magnesium, Rubber"}, {"label": "Dimensions", "content": "Diameter 121.9 cm (48 in.), Length 116.8 cm (46 in.)"}], "dataSource": [{"label": "Data Source", "content": "National Air and Space Museum"}], "objectRights": [{"label": "Restrictions & Rights", "content": "CC0"}], "objectType": [{"label": "Type", "content": "PROPULSION-Reciprocating & Rotary"}]}}, "url": "edanmdm:nasm_A19710881000", "hash": "9ef93742a65c86851994c2e7fcf304253ecdcac6", "docSignature": "40e7af95fe7152370c74a04220dc919d", "timestamp": 1666664365, "lastTimeUpdated": 1653682064, "title": "Wright Cyclone P-1, Radial 9 Engine"}