{"product_id":"1988-us-army-fm-1-203-fundamentals-of-flight-aviation-helicopter-manual-1","title":"1988 US Army FM 1-203 Fundamentals of Flight Aviation Helicopter Manual","description":"Original October 1988 Department of the Army edition of FM 1-203, Fundamentals of Flight. Produced for Army aviation training, this detailed field manual explains the science, mechanics, and operating principles behind both fixed-wing aircraft and helicopters.\u003cbr\u003e\u003cbr\u003eTopics include basic aerodynamics, airfoils, forces acting on aircraft, flight stability, aircraft structures, propulsion, gas-turbine and reciprocating engines, helicopter design and controls, rotor systems, hovering flight, autorotation, vortex-ring state, and other essential aviation concepts. Numerous technical illustrations, charts, and diagrams accompany the text.\u003cbr\u003e\u003cbr\u003eThis edition superseded the September 1983 version. The cover retains its original government distribution-restriction and destruction-notice language, adding interest for collectors of military aviation material.\u003cbr\u003e\u003cbr\u003eCondition: Good vintage condition overall. Covers show light toning, discoloration, edge wear, and minor surface marks. The binding appears secure, and the interior pages are clean and readable with expected age-related toning. Please review the photographs for the exact condition.\u003cbr\u003e\u003cbr\u003eSKU G-19","brand":"Second Chapter Book Co.","offers":[{"title":"Default Title","offer_id":67706345521400,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0859\/1025\/7912\/files\/6d1083ad-d6d7-49e9-89f3-390e8522461c_6b3f98f8-a4e6-42cb-8777-f76480fef3df.jpg?v=1792227560","url":"https:\/\/secondchapterbookco.com\/products\/1988-us-army-fm-1-203-fundamentals-of-flight-aviation-helicopter-manual-1","provider":"Second Chapter Book Co.","version":"1.0","type":"link"}