Wright Whirlwind R-790-A (J-5) Radial 9 Engine
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"guid": "http://n2t.net/ark:/65665/nv9a74ba979-2fae-49e2-a27f-3f0074f272ef", "record_link": "http://n2t.net/ark:/65665/nv9a74ba979-2fae-49e2-a27f-3f0074f272ef", "title": {"label": "Object Name", "content": "Wright Whirlwind R-790-A (J-5) Radial 9 Engine"}, "metadata_usage": {"access": "CC0"}, "data_source": "National Air and Space Museum"}, "indexedStructured": {"date": ["1920s"], "geoLocation": [{"L2": {"type": "Country", "content": "United States of America"}}], "object_type": ["Rotary engines", "Reciprocating (piston) engines", "Propulsion systems"], "name": ["Wright Aeronautical"], "place": ["United States of America"], "usage_flag": ["Aviation", "People", "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": "December 14, 1928"}], "identifier": [{"label": "Inventory Number", "content": "A19290017000"}], "notes": [{"label": "Physical Description", "content": "Type: Reciprocating, 9 cylinders, radial, air-cooled"}, {"label": "Physical Description", "content": "Power rating: 168 kW (225 hp) at 2,000 rpm"}, {"label": "Physical Description", "content": "Displacement: 12.9 L (788 cu in.)"}, {"label": "Physical Description", "content": "Bore and Stroke: 114 mm ( 4.5 in.) x 140 mm ( 5.5 in.)"}, {"label": "Physical Description", "content": "Weight: 231 kg (508 lb)"}, {"label": "Summary", "content": "The J-5 Whirlwind was a cornerstone aviation technology of the 1920s and 1930s. Charles L. Lawrance began work on the J-series of compact, lightweight, air-cooled radials for the U.S. Navy in 1921. The Navy merged Lawrance's firm with Wright Aeronautical in 1923 to further develop and manufacture the new engines. The J-5 had such advanced features as sodium-cooled exhaust valves and aluminum cylinder heads designed by engine pioneer Sam D. Heron."}, {"label": "Summary", "content": "The Whirlwind became the engine of choice for America's long-distance and exploratory fliers, including Charles Lindbergh, who chose a J-5 for the Spirit of St. Louis. This artifact, a military R-790-A, was the center engine on the Army Air Corps Fokker C-2 tri-motor \u00e2\u0080\u009cQuestion Mark,\u00e2\u0080\u009d which pioneered aerial refueling by setting an endurance record of 150 hours and 40 minutes over Los Angeles in 1929."}], "creditLine": [{"label": "Credit Line", "content": "Transferred from the War Department, Air Corps, Washington, D.C."}], "name": [{"label": "Manufacturer", "content": "Wright Aeronautical"}], "place": [{"label": "Country of Origin", "content": "United States of America"}], "physicalDescription": [{"label": "Materials", "content": "Aluminum, Steel, Paint, Phenolic, Rubber, Copper, Preservative coating"}, {"label": "Dimensions", "content": "3-D (Engine): 107.9 \u00c3\u0097 115.6 \u00c3\u0097 90.2cm (3 ft. 6 1/2 in. \u00c3\u0097 3 ft. 9 1/2 in. \u00c3\u0097 2 ft. 11 1/2 in.)"}, {"label": "Dimensions", "content": "3-D (Overall with Stand): 113.3 \u00c3\u0097 132.1 \u00c3\u0097 147.3cm, 366.5kg (3 ft. 8 5/8 in. \u00c3\u0097 4 ft. 4 in. \u00c3\u0097 4 ft. 10 in., 808lb.)"}, {"label": "Dimensions", "content": "3-D (Stand Base): 132.1 \u00c3\u0097 113.3 \u00c3\u0097 16.2cm (4 ft. 4 in. \u00c3\u0097 3 ft. 8 5/8 in. \u00c3\u0097 6 3/8 in.)"}, {"label": "Dimensions", "content": "3-D (Prop Shaft Length): 24.4cm (9 5/8 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_A19290017000", "hash": "748ea452738f019d160e940094dd9c8e7ba5384a", "docSignature": "ebc6efefc12ffc738bac40dc8db6c1fc", "timestamp": 1666664365, "lastTimeUpdated": 1653682060, "title": "Wright Whirlwind R-790-A (J-5) Radial 9 Engine"}