Packard 3A-2500 Geared Drive, V-12 Engine
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"metadata_usage": {"access": "CC0"}, "data_source": "National Air and Space Museum"}, "indexedStructured": {"geoLocation": [{"L2": {"type": "Country", "content": "United States of America"}}], "object_type": ["Propellers", "Impellers", "Propulsion systems"], "name": ["Packard Motor Car Company (Detroit, Michigan)"], "place": ["United States of America"], "usage_flag": ["Aviation", "Piston", "Propulsion", "Engines"], "online_media_type": ["Images"]}, "freetext": {"setName": [{"label": "See more items in", "content": "National Air and Space Museum Collection"}], "date": [{"label": "Date", "content": "1926"}], "identifier": [{"label": "Inventory Number", "content": "A19660004000"}], "notes": [{"label": "Physical Description", "content": "Type: Reciprocating, 12 cylinders, V-type, geared drive, liquid-cooled"}, {"label": "Physical Description", "content": "Power rating: 596.6 kW (800 hp) at 2,000 rpm"}, {"label": "Physical Description", "content": "Displacement: 41.6 L (2,539.55 cu in.)"}, {"label": "Physical Description", "content": "Bore and Stroke: 162 mm (6.375 in.) x 165 mm (6.5 in.)"}, {"label": "Physical Description", "content": "Weight: 646.4 kg (1,425 lb)"}, {"label": "Summary", "content": "The Packard Motor Car Company of Detroit, Michigan produced the world\u00e2\u0080\u0099s first quantity-production 12-cylinder automobile in in 1916, and belief in that engine carried over to aviation in the following year. Particularly beginning with lessons learned with the World War I era Liberty engines, Packard began development of 12-cylinder aircraft engines in 1923 that would better fully meet requirements of the Army and Navy, with a resulting great step forward made in decreasing the weight per horsepower."}, {"label": "Summary", "content": "The engines in the Packard 2500 series were built in direct drive and geared types. The development of the 3A-2500, like its predecessors the 1A-2500 and 2A-2500, was sponsored by both the Army and the Navy. By 1927, the Model 2500 was the most powerful standard aircraft engine in existence. It powered the Huff-Daland XHB-1 Cyclops, the Martin 3-Purpose Aircraft, Dornier Superwal, and Boeing PB-1. The Packard 3A-2500 was type certificated for commercial use in January 1929."}], "creditLine": [{"label": "Credit Line", "content": "Gift of Florence Air and Missile Museum"}], "name": [{"label": "Manufacturer", "content": "Packard Motor Car Company (Detroit, Michigan)"}], "place": [{"label": "Country of Origin", "content": "United States of America"}], "physicalDescription": [{"label": "Materials", "content": "Aluminum, Steel, Paint, Preservative coating, Rubber, Brass, Textile, Copper"}, {"label": "Dimensions", "content": "Height 106.9 cm (42.1 in.), Length 177.2 cm (69.75 in.), Width 74.3 cm (29.25 in.)"}], "dataSource": [{"label": "Data Source", "content": "National Air and Space Museum"}], "objectRights": [{"label": "Restrictions & Rights", "content": "CC0"}], "objectType": [{"label": "Type", "content": "PROPULSION-Propellers & Impellers"}]}}, "url": "edanmdm:nasm_A19660004000", "hash": "6c6894128c79163101e2333d883ecd02bc3f1e61", "docSignature": "eed4c39ba9c8ab80763a426a714c193a", "timestamp": 1666664365, "lastTimeUpdated": 1653682061, "title": "Packard 3A-2500 Geared Drive, V-12 Engine"}