{"product_id":"macchi-nieuport-ni11-ni17-istruzioni-norme-regolaggio-manutenzione","title":"Macchi-Nieuport Ni.11 \u0026 Ni.17 — Istruzioni e Norme per il Regolaggio e la Manutenzione","description":"\u003ch2\u003eMacchi-Nieuport Ni.11 \u0026amp; Ni.17 — \u003cem\u003eIstruzioni e Norme per il Regolaggio e la Manutenzione\u003c\/em\u003e\n\u003c\/h2\u003e\u003cp\u003eSocietà Anonima Nieuport-Macchi, Varese · Arti Grafiche Varesine · 1916–1917\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eCollection Overview\u003c\/h3\u003e\u003cp\u003eThis archival collection brings together the primary-source Italian-language technical manuals issued by \u003cstrong\u003eSocietà Anonima Nieuport-Macchi\u003c\/strong\u003e of Varese for the two most important single-seat sesquiplane fighters operated by the \u003cem\u003eRegia Aeronautica\u003c\/em\u003e and allied air services during the First World War: the \u003cstrong\u003eNi.11 «Bébé»\u003c\/strong\u003e (80 hp Le Rhône 9C) and the \u003cstrong\u003eNi.17\u003c\/strong\u003e (110 hp Le Rhône 9J). Documents span factory maintenance instructions, adjustment norms, and the illustrated parts catalogue covering both airframes.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eDocument Manifest\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNi.11 «Bébé» — Istruzioni e Norme per il Regolaggio e la Manutenzione del Biplano da Caccia Tipo 11000\u003c\/strong\u003e · Con Motore Rotativo 80 HP · Vol. 8 · Varese, Arti Grafiche Varesine, 1916\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNi.17 — Istruzioni e Norme per il Regolaggio e la Manutenzione del Biplano da Caccia Tipo 17000 (15 mq.)\u003c\/strong\u003e · Con Motore Rotativo 110 HP · Edizione I N.3 · Varese, Arti Grafiche Varesine, 1917\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalogo — Apparecchi «Nieuport» Biplani 80 HP 13 mq. – 110 HP 15 mq.\u003c\/strong\u003e · Con Motore Rotativo · Varese, Arti Grafiche Varesine, 1917\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eAerodynamic Engineering Profile\u003c\/h3\u003e\u003cp\u003eBoth aircraft employed Gustav Delage's \u003cstrong\u003esesquiplane\u003c\/strong\u003e («one-and-a-half plane») configuration: a full-chord upper wing paired with a dramatically narrowed, single-spar lower wing carrying less than half the upper wing's surface area. This layout reduced induced drag and gave the pilot exceptional downward visibility compared to conventional biplanes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAilerons:\u003c\/strong\u003e Upper wing only. Actuated via torque tubes on the Ni.11; upgraded to streamlined external push-rods and metal control wires on the Ni.17 for cleaner airflow and more immediate response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCowl:\u003c\/strong\u003e Ni.11 — open «horseshoe» sub-hemispherical cowl for rotary engine venting. Ni.17 — fully circular, closed, tightly faired aluminium cowl, significantly reducing parasitic drag and smoothing fuselage boundary-layer transitions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eEngine Technical Notes\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eNi.11\u003c\/th\u003e\n\u003cth\u003eNi.17\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eLe Rhône 9C\u003c\/td\u003e\n\u003ctd\u003eLe Rhône 9J \/ 9Jb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e80 hp\u003c\/td\u003e\n\u003ctd\u003e110–120 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e9-cyl. air-cooled rotary\u003c\/td\u003e\n\u003ctd\u003e9-cyl. air-cooled rotary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBecause the entire crankcase and cylinder block rotated around a fixed crankshaft, the engine acted as a massive flywheel, generating severe gyroscopic forces at high RPM. The intermediate Nieuport 16 had fitted the heavier 110 hp motor into the unmodified Ni.11 frame, producing a dangerously nose-heavy aircraft. The Ni.17 resolved this by lengthening the forward fuselage and scaling up overall wing area.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePerformance Data\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eMacchi-Nieuport Ni.11\u003c\/th\u003e\n\u003cth\u003eMacchi-Nieuport Ni.17\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWingspan (upper)\u003c\/td\u003e\n\u003ctd\u003e7.55 m\u003c\/td\u003e\n\u003ctd\u003e8.16 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWing Area\u003c\/td\u003e\n\u003ctd\u003e13.00 m²\u003c\/td\u003e\n\u003ctd\u003e14.75 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmpty Weight\u003c\/td\u003e\n\u003ctd\u003e344 kg\u003c\/td\u003e\n\u003ctd\u003e375 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Takeoff Weight\u003c\/td\u003e\n\u003ctd\u003e480 kg\u003c\/td\u003e\n\u003ctd\u003e560 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Speed\u003c\/td\u003e\n\u003ctd\u003e156 km\/h (sea level)\u003c\/td\u003e\n\u003ctd\u003e170 km\/h (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Ceiling\u003c\/td\u003e\n\u003ctd\u003e4,500 m\u003c\/td\u003e\n\u003ctd\u003e5,300 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEndurance\u003c\/td\u003e\n\u003ctd\u003e~2.5 hours\u003c\/td\u003e\n\u003ctd\u003e~2.0 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eHandling \u0026amp; Stability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGyroscopic Precession:\u003c\/strong\u003e Right-hand turns were aggressively sharp — engine torque and gyroscopic forces pulled the nose naturally into the turn. Left-hand turns forced the nose violently upward, requiring heavy coordinated opposite rudder to prevent high-alpha stalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongitudinal Trim:\u003c\/strong\u003e No in-flight adjustable stabiliser. Equilibrium managed entirely through pilot stick force against a balanced elevator. Neutral static longitudinal stability — highly responsive but sensitive to atmospheric turbulence.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eStructural Advisory — Lower Wing Torsional Weakness\u003c\/h3\u003e\u003cp\u003eThe single most critical structural advisory issued across Allied air services for the Nieuport family concerned \u003cstrong\u003elower wing aeroelastic twisting and structural failure\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Strut Torsional Weakness:\u003c\/strong\u003e The sesquiplane layout relied on a single main spar in the narrow lower wing, connected to the upper wing via a single geometric V-strut apex. Lacking a secondary rear spar, the lower wing was prone to catastrophic torsional divergence during extended high-speed dives or high-G pull-outs — ripping fabric and ribs away or shearing the primary spar entirely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperational Directive:\u003c\/strong\u003e Macchi and Nieuport factory advisories ordered strict airspeed management during vertical dives. Field retrofits included reinforcing wire bracing and auxiliary stiffening ribs near the V-strut attachments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\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":53696837058907,"sku":null,"price":34.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/banner-2-square.png?v=1785501477","url":"https:\/\/onlineaviationlibrary.com\/products\/macchi-nieuport-ni11-ni17-istruzioni-norme-regolaggio-manutenzione","provider":"Online Aviation Library","version":"1.0","type":"link"}