{"product_id":"aichi-d3a-val-type-99-carrier-bomber-technical-manuals-collection","title":"Aichi D3A Val — Type 99 Carrier-Based Bomber Technical Manuals Collection","description":"\u003cp\u003eThis Living Collection brings together primary-source technical documentation for the \u003cstrong\u003eAichi D3A \"Val\"\u003c\/strong\u003e (九九式艦上爆撃機, Navy Type 99 Carrier Bomber) — the Imperial Japanese Navy's premier carrier-borne dive bomber of the early Pacific War. Derived from Heinkel He 70 design influences, the D3A became highly regarded for its precision bombing accuracy and unexpected dogfight maneuverability once ordnance was released. A total of \u003cstrong\u003e1,486 units\u003c\/strong\u003e were produced by Aichi Kokuki KK.\u003c\/p\u003e\n\n\u003cp\u003eThe collection covers the \u003cstrong\u003eD3A Model 11\u003c\/strong\u003e variant with the original Japanese-language instruction manual, complemented by a curated photographic archive.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCollection Contents — 2 Documents\u003c\/h2\u003e\n\n\u003ch3\u003eD3A Model 11 — Operating and Maintenance (1 Manual)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAichi D3A Model 11 Type 99 Carrier-Based Bomber Instruction Manual\u003c\/strong\u003e — 九九式艦上爆撃機 取扱説明書 (Japanese Language)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eD3A Slides, Photos and Brochures (1 Document)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAichi D3A Photographic Collection\u003c\/strong\u003e — Quick Specs · Aircraft in Flight · Aircraft on the Ground · Cockpit (English Language)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eAircraft \u0026amp; Technical Overview\u003c\/h2\u003e\n\n\u003ch3\u003eAerodynamic Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWing Configuration:\u003c\/strong\u003e Low-mounted elliptical wings inspired directly by the German Heinkel He 70 Blitz — excellent lift-to-drag characteristics and superior handling at lower flight envelopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrototype Deficiencies (1938):\u003c\/strong\u003e Severe directional instability in wide turns and high snap-roll tendency during tight banking manoeuvres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerodynamic Mitigations:\u003c\/strong\u003e Wingspan extended by 0.40 m, outer section airfoil profile altered, and a prominent dorsal fin strake added forward of the rudder to correct airflow detachment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDive Brake Redesign:\u003c\/strong\u003e Original wing-mounted dive brakes induced intense structural vibrations at maximum diving speed. Resolved by replacing with reinforced multi-slotted dive brakes outboard of the main landing gear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePowerplant Evolution\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial Mockup:\u003c\/strong\u003e Nakajima Hikari 1 nine-cylinder radial (709 hp) — proven critically underpowered for carrier operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD3A1 Model 11:\u003c\/strong\u003e Mitsubishi Kinsei 43 (1,000 hp) or Kinsei 44 (1,070 hp) — 14-cylinder two-row air-cooled radial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD3A2 Model 22:\u003c\/strong\u003e Mitsubishi Kinsei 54 (1,300 hp) with fully redesigned aerodynamically streamlined engine cowling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e Cowl flap cooling system and dynamic oil coolers tailored for sustained high-power vertical climbs after bomb deployment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHandling \u0026amp; Stability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Speed Agility:\u003c\/strong\u003e Clean wing aerodynamics and light wing loading gave the Val near-fighter dogfight handling metrics once ordnance was released.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDive Profile:\u003c\/strong\u003e Capable of 60°–90° vertical steep-angle dives. Pilot used a Type 95 telescopic gunsight; belly window allowed visual target acquisition to the dive pivot point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBomb Clearance:\u003c\/strong\u003e 250 kg central bomb fitted to a pivoting displacement trap gear (fork crutch) — mechanically swung the bomb downward and forward, clearing the propeller arc before release.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance Data — Model 11 vs Model 22\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eD3A1 Model 11\u003c\/th\u003e\n\u003cth\u003eD3A2 Model 22\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Speed\u003c\/td\u003e\n\u003ctd\u003e389 km\/h (240 mph) at 3,000 m\u003c\/td\u003e\n\u003ctd\u003e430 km\/h (266 mph) at 6,200 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCruising Speed\u003c\/td\u003e\n\u003ctd\u003e296 km\/h (184 mph)\u003c\/td\u003e\n\u003ctd\u003e299 km\/h (186 mph)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Ceiling\u003c\/td\u003e\n\u003ctd\u003e9,265 m (30,400 ft)\u003c\/td\u003e\n\u003ctd\u003e10,500 m (34,450 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime to 3,000 m\u003c\/td\u003e\n\u003ctd\u003e6 min 27 sec\u003c\/td\u003e\n\u003ctd\u003e5 min 48 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Range\u003c\/td\u003e\n\u003ctd\u003e1,473 km (915 miles)\u003c\/td\u003e\n\u003ctd\u003e1,352 km (840 miles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmpty Weight\u003c\/td\u003e\n\u003ctd\u003e2,408 kg (5,309 lb)\u003c\/td\u003e\n\u003ctd\u003e2,570 kg (5,666 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Takeoff Weight\u003c\/td\u003e\n\u003ctd\u003e3,650 kg (8,047 lb)\u003c\/td\u003e\n\u003ctd\u003e3,800 kg (8,378 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEngineering Bulletins\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed Undercarriage:\u003c\/strong\u003e Navy deliberately chose fixed spatted landing gear over retractable — structural weight savings and mechanical simplicity outweighed drag penalty at operational cruising speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVulnerability Directives:\u003c\/strong\u003e Built without self-sealing fuel tanks or pilot armour to maximise range. Later field bulletins introduced rudimentary CO₂ fire-extinguishing equipment into wing tanks, though efficacy against heavy-calibre fire remained low.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Stowage:\u003c\/strong\u003e Only outer wingtips folded upward (rather than full wing fold) to fit standard IJN carrier elevator dimensions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e⚠️ Regulatory Notice: Under FAA 14 CFR § 43.13 and EASA Part-M, any mechanic performing maintenance on an active aircraft must use current, manufacturer-approved revision-controlled data. This archival document does not satisfy that requirement.\u003c\/p\u003e\n\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.\u003c\/p\u003e\n\u003cp\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":53608626717019,"sku":"OAL-JP-AICHI-D3A","price":25.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/aichi-d3a-val-double-spread-banner.png?v=1784219358","url":"https:\/\/onlineaviationlibrary.com\/products\/aichi-d3a-val-type-99-carrier-bomber-technical-manuals-collection","provider":"Online Aviation Library","version":"1.0","type":"link"}