{"product_id":"grumman-f4f-fm-1-fm-2-wildcat-airframe-engineering-drawings-blueprints","title":"Grumman F4F \/ FM-1 FM-2 Wildcat — Airframe Engineering Drawings (Blueprints)","description":"\u003ch3\u003eGrumman F4F \/ Eastern Aircraft FM-1 \u0026amp; FM-2 Wildcat — Airframe Engineering Drawings\u003c\/h3\u003e\n\u003cp\u003e8,200 engineering drawing sheets sourced from 15 original manufacturing microfilm rolls, now converted to high-resolution TIFF graphic format. This is one of the most extensive primary-source airframe drawing archives available for the Wildcat family.\u003c\/p\u003e\n\u003ch3\u003eArchive Scope\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Sheets:\u003c\/strong\u003e ~8,200 sheets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSource:\u003c\/strong\u003e 15 microfilm rolls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e TIFF (high-resolution)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRolls Included:\u003c\/strong\u003e A, A2, B, B2, C, C2, D, D2, E, E2, F2, G2, XA, XB, XC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAircraft Coverage\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGrumman F4F-4\u003c\/strong\u003e and the \u003cstrong\u003eEastern Aircraft FM-1 Wildcat\u003c\/strong\u003e (built by General Motors) are structurally and aerodynamically identical aircraft. The FM-1 differed primarily in reducing wing armament from six guns to four, saving weight and increasing ammunition capacity — both aircraft share the same technical and engineering baselines. The \u003cstrong\u003eFM-2\u003c\/strong\u003e (lightweight variant) is also covered within this drawing set.\u003c\/p\u003e\n\u003cp\u003eThe F4F\/FM Wildcat is one of the most thoroughly documented carrier-based fighters of World War II, thanks to archival testing by the \u003cstrong\u003eU.S. Navy Bureau of Aeronautics\u003c\/strong\u003e and the \u003cstrong\u003eNational Advisory Committee for Aeronautics (NACA)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003ePerformance Data — F4F-4 \u0026amp; FM-1 Baseline\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eSource: U.S. Navy BuAer Airplane Characteristics and Performance Sheets\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Speed\u003c\/td\u003e\n\u003ctd\u003e318–320 mph (278 kts)\u003c\/td\u003e\n\u003ctd\u003eCritical altitude 19,400 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSea Level Speed\u003c\/td\u003e\n\u003ctd\u003e284 mph\u003c\/td\u003e\n\u003ctd\u003eMilitary power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStalling Speed\u003c\/td\u003e\n\u003ctd\u003e74.4 mph (64.6 kts)\u003c\/td\u003e\n\u003ctd\u003ePower off, full load, landing config\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Ceiling\u003c\/td\u003e\n\u003ctd\u003e34,900 ft\u003c\/td\u003e\n\u003ctd\u003eAbsolute ceiling ~39,500 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial Climb Rate\u003c\/td\u003e\n\u003ctd\u003e1,950 ft\/min\u003c\/td\u003e\n\u003ctd\u003eSea level, normal fighter gross weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombat Range\u003c\/td\u003e\n\u003ctd\u003e770 miles\u003c\/td\u003e\n\u003ctd\u003eExtended to 1,270 miles with droppable tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTakeoff Distance\u003c\/td\u003e\n\u003ctd\u003e330 ft\u003c\/td\u003e\n\u003ctd\u003eInto a 25-knot deck wind\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eEngine Technical Notes\u003c\/h3\u003e\n\u003cp\u003eThe FM-1 and F4F-4 utilized the \u003cstrong\u003ePratt \u0026amp; Whitney R-1830-86 Twin Wasp\u003c\/strong\u003e — a 14-cylinder, two-row radial engine with a two-stage, two-speed supercharger.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakeoff Power:\u003c\/strong\u003e 1,200 hp at 2,700 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilitary Power (Low Gear):\u003c\/strong\u003e 1,100 hp up to 3,500 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilitary Power (High Gear):\u003c\/strong\u003e 1,000 hp up to 19,000 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePropeller:\u003c\/strong\u003e Curtiss Electric 3-blade constant-speed, gear ratio 3:2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e NACA cowl ring with adjustable mechanical cowl flaps for cylinder head temperature control during steep climbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eAerodynamic Profile\u003c\/h3\u003e\n\u003cp\u003eWind tunnel evaluations at \u003cstrong\u003eNACA Langley\u003c\/strong\u003e provided crucial engineering telemetry for the F4F mid-wing configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirfoil:\u003c\/strong\u003e NACA 23015 at root, tapering to NACA 23009 at tips — high-lift with predictable stall progression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWing Area:\u003c\/strong\u003e 260 sq. ft. gross; wing loading ~31 lbs\/sq. ft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlaps:\u003c\/strong\u003e Hydraulically operated split trailing-edge flaps, total area 29.7 sq. ft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eHandling \u0026amp; Stability\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eSource: Flight test logs, NAS Anacostia\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongitudinal Stability:\u003c\/strong\u003e Strongly positive under clean loading. Aft C.G. near 27.4% M.A.C. can induce neutral elevator control force at elevated G-loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral\/Directional:\u003c\/strong\u003e Crisp roll rates below 220 mph; control forces stiffen at higher speeds due to aerodynamic loading on fabric surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM-1 Benefit:\u003c\/strong\u003e Removal of two outer wing guns reduced wing-tip inertia, marginally improving roll response and lateral oscillation vs. the F4F-4.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Engineering \u0026amp; Structural Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArmament Change (F4F-4 → FM-1):\u003c\/strong\u003e Reverted from 6 guns (240 rpg) to 4 guns (430 rpg), extending continuous trigger time from ~10 seconds to ~30 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Compatibility:\u003c\/strong\u003e Manual hand-cranked landing gear and folding wings reduced 38-ft span to 14 ft 4 in for CVE deck stowage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eImportant Notice\u003c\/h3\u003e\n\u003cp\u003eThis set of engineering drawings is not a complete or exhaustive collection of all Wildcat manufacturing documentation. It represents the content captured across the 15 microfilm rolls listed above.\u003c\/p\u003e\n\u003cp\u003eThis is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.\u003cbr\u003eLiving Collections with Free Lifetime Updates — Please review our Disclaimer and Export Notice before purchasing.\u003c\/p\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":53584794878299,"sku":"OAL-F4F-FM1-FM2-BLUEPRINTS","price":98.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/f4f-wildcat-square-banner.png?v=1783885752","url":"https:\/\/onlineaviationlibrary.com\/products\/grumman-f4f-fm-1-fm-2-wildcat-airframe-engineering-drawings-blueprints","provider":"Online Aviation Library","version":"1.0","type":"link"}