{"product_id":"1950s-space-age-83-experimental-2-bladed-polished-helicopter-rotor-airplane-propeller","title":"1950's Space Age 83\" Experimental 2-Bladed Polished Helicopter Rotor Airplane Propeller","description":"\u003cp data-start=\"78\" data-end=\"506\"\u003eThis exceptional polished aluminum propeller is a one-of-a-kind aviation display piece, originally acquired from the New England Air Museum in its original condition. The museum regularly receives donations from Pratt \u0026amp; Whitney, Sikorsky, Raytheon, and Kaman, and this propeller is believed to have been an experimental aircraft propeller or helicopter rotor developed by one of these leading aerospace companies in the 1940s or 1950s.\u003c\/p\u003e\n\u003ch4 data-start=\"508\" data-end=\"552\"\u003eExperimental Status \u0026amp; Unique Markings\u003c\/h4\u003e\n\u003cp data-start=\"553\" data-end=\"726\"\u003eA key feature of this propeller is the stamped marking on the brass part of hub: \"EXP USE ONLY,\" confirming its experimental status. Other stampings on the hub and blades include:\u003c\/p\u003e\n\u003cul data-start=\"727\" data-end=\"925\"\u003e\n\u003cli data-start=\"727\" data-end=\"758\"\u003eA70708MP, B12, EXP USE ONLY (on Brass of Hub)\u003c\/li\u003e\n\u003cli data-start=\"759\" data-end=\"816\"\u003eSK14446, SER# 8, and the number 1 (right side of hub)\u003c\/li\u003e\n\u003cli data-start=\"817\" data-end=\"848\"\u003eNumber 2 (left side of hub)\u003c\/li\u003e\n\u003cli data-start=\"849\" data-end=\"882\"\u003eMP70736 (bottom ridge of hub)\u003c\/li\u003e\n\u003cli data-start=\"883\" data-end=\"925\"\u003eAF35704 and AF35728 (bottom of blades)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"927\" data-end=\"965\"\u003eRefinement \u0026amp; High-Mirror Finish\u003c\/h4\u003e\n\u003cp data-start=\"966\" data-end=\"1313\"\u003eThis propeller has undergone a complete transformation, with all original internal parts removed, leaving only the hub and blades intact. The entire piece has been completely disassembled, cleaned, and sanded, then high polished to a high-mirror aluminum finish. A custom dome spinner cap was added to enhance its sleek, futuristic look.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e*** STAND NOT INCLUDED ***\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4 data-start=\"1315\" data-end=\"1347\"\u003eSpecifications \u0026amp; Features\u003c\/h4\u003e\n\u003cul data-start=\"1348\" data-end=\"1830\"\u003e\n\u003cli data-start=\"1348\" data-end=\"1436\"\u003eEra: Circa 1940s-1950s, determined by original internal components, including vintage FAFNIR Company bearings and hand-stamped identification numbers.\u003c\/li\u003e\n\u003cli data-start=\"1437\" data-end=\"1527\"\u003eMaterial: All-aluminum construction, fully polished for a brilliant reflective finish.\u003c\/li\u003e\n\u003cli data-start=\"1528\" data-end=\"1706\"\u003eDimensions:\n\u003cul data-start=\"1546\" data-end=\"1706\"\u003e\n\u003cli data-start=\"1546\" data-end=\"1575\"\u003eOverall Length: 83 inches\u003c\/li\u003e\n\u003cli data-start=\"1578\" data-end=\"1634\"\u003eBlade Length: 41 inches (widest section: 5.5 inches)\u003c\/li\u003e\n\u003cli data-start=\"1637\" data-end=\"1685\"\u003eDepth: 10.5 inches (hub base to spinner top)\u003c\/li\u003e\n\u003cli data-start=\"1688\" data-end=\"1706\"\u003eWeight: 38 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1707\" data-end=\"1769\"\u003eBlades slide into the hub and are secured with set screws.\u003c\/li\u003e\n\u003cli data-start=\"1770\" data-end=\"1830\"\u003eDesigned for wall mounting via the hub using a lag bolt.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"1832\" data-end=\"1872\"\u003eAviation History Meets Modern Art\u003c\/h4\u003e\n\u003cp data-start=\"1873\" data-end=\"2271\"\u003eThis experimental propeller has been transformed into a museum-quality display piece with a space-age aesthetic. Its brilliant mirror-like polish makes it an ideal conversation piece for collectors, aviation enthusiasts, and design aficionados. Whether displayed in a loft, office, or industrial-inspired space, this propeller brings a striking combination of aerospace history and modern design.\u003c\/p\u003e\n\u003cp data-start=\"2273\" data-end=\"2333\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eOwn a rare and authentic piece of aviation innovation today.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e*** STAND NOT INCLUDED ***\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Aviation Art | Airplane Furniture | Pilot Gifts - Plane Pieces Inc","offers":[{"title":"Default Title","offer_id":51894545088813,"sku":"sku-50445182173465","price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2732\/8045\/files\/experimental_space_age_modern_art_polished_airplane_rotor_propeller_20.jpg?v=1772866600","url":"https:\/\/www.propandpiston.com\/products\/1950s-space-age-83-experimental-2-bladed-polished-helicopter-rotor-airplane-propeller","provider":"Prop and Piston","version":"1.0","type":"link"}