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Lioré et Olivier LeO 45

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710:. Modifications in Vichy service included fitting the aircraft with larger rudders and two more 7.5 mm machine guns in the rear turret. The extra weapons were added because of the limited capacity of the cannon magazines and the fact that changing them in flight was extremely difficult. Aircraft production had stopped with the German occupation but a 1941 agreement authorized Vichy authorities to have a limited number of military aircraft built and orders were placed for 225 newly built Leo 451s. In order to speed production, considerable use was made of components that had been built in 1940 and stored in the German-occupied zone. The first of the newly produced aircraft flew on 30 April 1942, and by the time the German occupation of Southern France following 676:
LeOs performance and made them difficult to intercept. The diving and climbing speeds were very good as well (the Italian SM.79 took 17 minutes to reach 5,000 m, compared to 14 for the LeO), even if not that useful for a bomber. LeOs were optimized for medium-altitude operations (5,000 m) but were forced to go far lower to search for and destroy tactical targets, rarely with even a basic fighter escort (H-75, D.520). LeOs were not unarmed and German fighters had to keep a look out for their dorsal turret: on 6 June 1940, gunner sergeant Grandchamp, GB II/11 shot down two Bf 110Cs with the Hispano cannon. German fighters came to avoid this danger by attacking from below, forcing the LeOs to deploy their retractable turret, which slowed them.
644: 808: 608:, within which the majority of the aircraft's armaments were enclosed. In total, the aircraft's armaments comprised: 120 20 mm rounds, 800 7.5 mm rounds, up to seven 200 kg bombs or other combinations (1–2 500 kg bombs in the belly, plus the two 200 kg in the wings). When flown with the maximum payload, this reduced the corresponding fuel load to only 1,000 liters. The fuel tanks were also housed within the wings, these comprising a pair of 880 lts tanks within the inner wings), along with a further two pairs of 330 and 410 liters contained in the external wings. 1089: 377:, were procured between 1933 and 1935, many of these originated from technical programmes which had predated the recognition of the service's independence and thus had not been developed to meet its new strategic ambitions. In addition, several shortcomings was quickly identified with many of these aircraft, including inadequate defensive armaments, being too slow and relatively unmanoeuvrable, and thus too vulnerable for viable sorties over hostile territory. Accordingly, the need for their replacement was apparent. It was out of the 1041: 1066: 491: 540:. At the same point, there were only 10 LeO 451 bombers in French Air Force service, while another 22 were in the process of being delivered. It was at this point that a flurry of additional wartime production orders were issued, calling for hundreds more aircraft to be manufactured, amounting to around 1,549 LeO 45 aircraft of various models. While additional productions lines were established in order to produce more aircraft, much of this extra capacity did not arrive until mere months prior to the catastrophic 556:, which had been conceived with the aim of producing a suitably advanced bomber to equip the French Air Force. In contrast to its predecessors, which had relied on machine guns for self-protection, the emphasis was placed on high-speed high-altitude cruise. The expectation was that high speed would force enemy fighters into tail-chase attacks and to that effect the aircraft was designed with a rear-firing cannon which possessed an unobstructed rear arc of fire thanks to the design of the twin tailfins. 139: 321: 528:
improvements; the mandate was issued in spite of known teething troubles with the type that were far from cleared. At the same time, the requirements of Plan V were elevated to 1188 B4 bombers, 396 of these being first line aircraft. Accordingly, on 20 February 1939, a tentative order for 100 aircraft was confirmed; on 18 April 1939, a large order for a further 480 LeO 45 bombers was received.
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carrying an internally carried payload of 1,200 kg (2,650 lb). The new bombers would have to be capable of operating at day and night, while carrying defensive turrets, the forward unit being fixed to the fuselage while the ventral position was to be flexible. In late 1935, Amiot, Latecoere, Romano, Lioré et Olivier and Bloch presented the mock-ups of their submissions.
1019: 612: 987: 313: 1114: 631:. The undercarriage was fully retractable; it featured an unusually complicated mechanism for the main wheels in order to reduce the size of the engine nacelles. The two horizontal surfaces of the tail unit were constructed in two separate halves and bolted onto a short center section fixed to the upper fuselage; the twin fins and rudders, which were furnished with 664:(bomber squadrons, abbreviated GB) I/12 and II/12 on 11 May. Flying at low altitude, the bombers suffered from heavy ground fire with one aircraft shot down and eight heavily damaged. Within the next eight days many of them were shot down, such as the one piloted by sergent-chef Hervé Bougault near Floyon, during a bombing mission over German troops. By the 627:, flow adjustment was not provided by flaps but by a frontal ring that moved back and forth to respectively reduce or increase flow, without change in drag. Like many other French twin-engine aeroplanes of the era, the propellers rotated in opposite directions to eliminate the undesirable effects of propeller 461:
for the type's official evaluation. On 6 December 1937, it was involved in a forced landing incident as a result of both engines having failed simultaneously in mid-flight; the pilot, Jean Doumerc, was able to land without sustaining any damage. The prototype was promptly returned to the manufacturer
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on 24 March 1939. On 28 April 1939, the second production aircraft conducted its first flight. Further production issues were encountered as a result of supply issues with Gnome-Rhone engines and associated propellers; as a result, it was decided to fit the type with Ratier-built propellers instead,
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The fuselage housed the aircraft's four-man crew; the bombardier, who was also the commander as per French tradition, was positioned within an almost-fully glazed nose at the front of the aircraft, ahead of the pilot, and performed observation and bombing aiming functions from this location. Behind
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On 21 October 1938, it was specified that all production LeO 45 aircraft were to be equipped with Gnome-Rhône engines in place of the originally envisioned Hispano-Suiza powerplants. However, as a result of this demand, there was considerable delays in the delivery of the first production aircraft.
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In May 1937, the Armée de l'Air placed an initial pre-production order for a pair of LeO 450 aircraft, one being fitted with Hispano-Suiza AA 06/07 engines and the other with Hispano-Suiza 14 AA 12/13 engines. On 29 November 1937, an order for 20 production machines was received, the first of which
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Various issues with the troublesome Hispano-Suiza engines had been experienced and this resulted in several changes being made to the prototype, such as the adoption of broader, more efficient air intakes for the oil coolers, which in turn reduced instances of engine overheating. On 29 August 1938,
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During the latter half of 1935, the Service Technique Aéronautique decided to enact several changes to some of the specified requirements; these included the revision of the rearward and lower turret arrangements and the crew reduced from five to four, as it was thought that the co-pilot could also
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Although the LeOs were typically faster than many fighters and also faster than almost all other types of bomber, the Luftwaffe was equipped with fighters that were even faster (such as the Bf 109 and Bf 110). The cruise speed, up to 420 km/h (7 km/min), was one of the strengths of the
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radial engines producing 1,120 hp (835 kW) each, flew for the first time. Despite problems experienced with longitudinal instability, engine reliability and overheating, the aircraft demonstrated excellent overall performance. During flight testing, the prototype was capable of reaching
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Upon Italy's entry into the war on the Axis side, LeOs attacked Livorno, Novi Ligure, Vado and Palermo in a four-aircraft morning mission. Against Italian forces, the LeOs were able to operate without much difficulty. Turin (Fiat plants) was near the border and easy to reach, while Italy did not
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At the outbreak of World War II, only ten LeO 45s had been formally accepted by the French Air Force. These aircraft were issued to a front line unit to experiment with the new type in the field and flew a few reconnaissance flights over Germany, which resulted in the type's first combat loss.
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During early 1939, as it was becoming apparent that the international situation was worsening and that the European powers were increasingly likely to be involved in a major war, the Armée de l'Air explicitly requested of SNCASE that the company would not delay production by enacting any further
672:(bomber wing) had flown approximately 400 combat missions, dropping 320 tons of bombs at the expense of 31 aircraft shot down by enemy fire, 40 written off due to damage and five lost in accidents. Other statistics state that about 47 bombers were lost: 26 to fighters, 21 to anti-aircraft fire. 392:
heavy bomber programme and made approaches to all of the main French aircraft manufacturers. Various requirements were specifying a five-seat bomber with a top speed of 400 km/h (215 knots, 250 mph) at 4,000 m (13,125 ft) and a combat radius of 700 km (435 mi)
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was officially recognised as an independent military service. In accordance with this new position, in addition to cooperating with land and naval operations, there was a newfound emphasis on the ability to execute independent strategic-level operations. It was quickly determined that existing
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for adjustments prior to the resumption of evaluation flights. In July 1938, the prototype, fitted with the new Mercier-designed cowlings, attained 500 km/h (270 knots, 311 mph). The earlier instability issues were partially addressed via the adoption of redesigned twin
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wing, which employed a structure designed and patented by Mercier, was constructed in four separate sections. Specifically, the inner section was built around two spars equipped with steel booms which had enough room between them to accommodate a 200 kg-class bomb and large
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on 10 May 1940, only 54 of the 222 LeO 451s that had been delivered were considered ready for combat, the remainder being used for training, spares, undergoing modifications and repairs or having been lost. The first combat sortie of the campaign was flown by ten aircraft from
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the pilot, the radio operator could man a defensive 7.5 mm M.1934 (500 rounds) machine gun from an underbelly retractable "gondola". A corridor alongside the main bomb bay led to the dorsal gunner's position, which featured a powered mounting for the 20 mm cannon
482:. Following the completion of the re-engining, the flight test programme was resumed, running from 21 October 1938 to February 1939. In spite of the new engines being slightly less powerful, the speed and general performance of the prototype remained relatively unchanged. 424:
and other lesser-known biplane bombers. This had earned the company a reputation for reliability, but were had been relatively traditional and conservative in terms of their design. The 1934 programme was put under Pierre Mercier, a younger engineer who had expertise in
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By September 1939, the eve of the outbreak of the Second World War, there were a total of 749 LeO 45 aircraft on order; this included several different variants of the type, such as an envisioned high altitude model, aircraft outfitted with American-built
401:. In September 1936, the envisioned bomber's requirements were revised to account for development of 1,000 hp (746 kW)-class engines; accordingly, the cruise speed raised to 470 km/h (255 knots, 290 mph). It was at this point that 687:
continued the fight, since the LeOs were produced at a fast pace (around 4–5/day, over 200 built within 45 days) allowing them to re-equip. Losses remained high and, on missions, 13 LeOs were intercepted and four shot down by Luftwaffe fighters.
409:, which called for an even larger and more capable bomber force to be provisioned for the French Air Force; under this plan, it was envisioned that a total of 41 units each equipped with 12 B4-type aircraft would be established. 503:, which called for the reequipping of 22 bomber units. In order to meet French ambitions, which was viewed as requiring 449 frontline aircraft and 185 reserve aircraft, by April 1940, official contracts were also issued for 342:, was promptly initiated. This plan called for 1,010 modern combat aircraft suitable for first-line service to be provisioned by late 1936; out of these, 350 of these were to be bombers, further divided into 210 799:
Following the war, the 67 surviving aircraft were mostly used as trainers and transports. The LeO 451 was retired in September 1957, making it the last pre-war French design to leave active duty.
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possess a radar system and radios were not commonly used on the Italian fighters. On the other front, however, ground-based flak fire and Luftwaffe fighters alike took a heavy toll upon the type.
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The LeO 45 was a low-wing monoplane, all-metal in construction, equipped with a retractable undercarriage and powered by two 1,060 hp Gnome-Rhône 14N engines. The prototype, which made its
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As only a handful of aircraft had been introduced into the French Air Force by the outbreak of the Second World War, the LeO 45 was too late to provide a substantial contribution during the
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had 50 LeOs but these aircraft had not been dispersed and even lacked capable AA defence on their airfields. When the Luftwaffe attacked, a total of 40 bombers were lost. In spite of this,
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which began on 8 November 1942, surviving French LeO 451 in North Africa were used primarily for freight duties, although they flew a few bombing missions against Axis forces during the
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The Germans were not especially interested in the type but on 21 May 1943, the Luftwaffe requested the Regia Aeronautica to hand over 39 LeO 451s captured by Italians troops in the
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forces operated the aircraft. The LeO 45 participated in combat missions throughout the remainder of the war and continued to be used for some time after its end by the post-war
579:. The fuselage cross-section was reduced via the adoption of a main fuselage bomb bay paired to smaller bomb bays that were located within the wing roots. The low 1937: 2195: 604:, with 120 rounds; the turret could be retracted. Another 7.5 mm machine-gun M.1934 was installed in the nose (with 300 rounds). The LeO 45 had a central 665: 50: 1967: 273:
on 15 January 1937, had been fitted two 1,100 hp Hispano-Suiza engines. The LeO 45 had been developed as a modern and advanced bomber for the new
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engines producing 1,375 hp (1025 kW) each, 400 ordered, one prototype built. The aircraft flew on 12 March 1939 but was later destroyed on the ground.
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Amongst the numerous manufacturers to submit proposals for the B4 programme was Lioré et Olivier, which was to be soon nationalized as part of the
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being specified for delivery in May 1938. On 26 March 1938, a further 20 LeO 450 was ordered in line with the French Air Ministry's newly adopted
458: 2190: 2180: 2175: 1960: 277:, which had gained its independence on 1 April 1933. Introduced to operational service in 1938, it was a very effective and capable bomber. 478:
engines, which were capable of producing 1,030 hp (768 kW) each; as a result of these changes, the aircraft was re-designated as
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480 km/h (260 knots, 300 mph) at 4000 m and of attaining 624 km/h (337 knots, 388 mph) in a shallow dive.
741:, losing one of their number to British anti-aircraft fire. Two bomber units equipped with LeO 451s, GB I/12 and GB I/31 were based in 1913: 1885: 910:
engines, seating for 6 passengers, range 3,500 km (1,890 nm, 2,175 mi) at 400 km/h (215 knots, 250 mph) cruising speed, 40 modified.
116: 76: 940: 588:; the spars did not continue to the wing-tip but made way for a box-type structure. The wings were furnished with large split-type 807: 266:
as a modern medium bomber capable of performing independent strategic operations, unlike the majority of previous French bombers.
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aircraft would be incapable of performing the latter role to a sufficient degree, thus a modernisation programme, known as
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Post-war conversion to high-speed transports and search-and-rescue aircraft, powered by two 895 kW (1,200 hp)
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German-captured bombers modified for freight duty, seating for up to 17 troops. Around about 50 aircraft were modified.
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brought production to an end, 102 LeOs had been built for Vichy. In 1942, LeO 451-359 was fitted with an experimental
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panels. As a consequence of the specified speed requirements of the programme, a lot of effort was spent in reducing
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modernisation programme that the requirements for an advanced medium bomber were formulated for the new service.
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serve as a navigator and bomb-aimer. To reflect the crew change, the programme was re-designated from B5 to
1995: 1030: 746: 165: 90: 1864: 792:. The 451s were converted into transport aircraft for fuel and troops. Other LeOs were delivered to the 860: 852: 848: 844: 840: 1869: 1261: 1202:
14-cylinder air-cooled radial piston engine, 790 kW (1,060 hp) RH rotation (or −39 or −47)
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14-cylinder air-cooled radial piston engine, 790 kW (1,060 hp) LH rotation (or −38 or −46)
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aircraft as stop gap measures, along with another 100 LeO 45 aircraft being ordered on 15 June 1938.
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airframes. It was out of Mercier's work that a new design emerged, which was soon christened as the
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and 12 were put in service with a ground attack unit, although they saw almost no active service.
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1 × 7.5 mm (0.295 in) MAC 1934 in "dustbin" retractable ventral turret with 500 rounds
926: 475: 1909: 1897: 1881: 1818: 1079: 793: 788:). The Luftwaffe, claiming to have previously bought the LeOs, gave in exchange a stock of 30 457:
In September 1937, the prototype was delivered to the Centre d'Essais de Matériels Aériens at
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A total of 452 aircraft had then been built, 373 accepted into service (including 13 for the
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totalled around 70 losses both in air and ground but still continued to fight until the end.
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The first LeO 45.01 prototype was redesignated, fitted with two Gnome-Rhone 14R engines.
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fuselage; the structure included 60 individual fixed frames attached to longitudinal
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Notice descriptive et d'utilisation de l'avion LeO. 451 à moteurs Gnome et Rhône 14N
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L'aviation française de bombardement et de renseignement 1918–1940 (Docavia n°12)
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Twelve LeO 451T aircraft were redesignated, used as mail transport aircraft for
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Ehrengardt, Christian-Jacques "Le bombardement français, tome I: 1939/1940".
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Capello, R. (June 2000). "Courrier des Lecteurs" [Readers' Letters].
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495 km/h (308 mph, 267 kn) at 4,000 m (13,000 ft)
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On 24 October 1940, Vichy French LeO 451s carried out an air raid against
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Post-war photo-reconnaissance variant, powered by two 1,600 hp (1195 kW)
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During late November 1938, the first LeO 45 was on static display at the
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Up to 1568 kg (3,457 lb) of bombs in fuselage and wing root bomb bays
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which reduced the maximum speed from 500 km/h to 470 km/h.
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A LeO 45 having landed in the French countryside in December 1937.
642: 610: 572: 568: 489: 319: 311: 174: 292:, the type continued to be manufactured and operated by occupied 1938:
French airforce analysis 1940 -included bombers-in airpower site
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7 × 200 kg bombs (actual bomb weight: 224 kg (494 lb))
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Another problem had been caused by the Germans' initial strike.
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it was decided to replace the existing Hispano-Suiza engines by
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when Allied forces invaded on 8 June 1941, at the start of the
1901:, October 1985, Vol 29 No 4. pp. 179–189. ISSN 0306-5634. 1632:
magazine, Westward editions, Parma, n.14 (10/2005), pp. 28–29.
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Following the Armistice, LeO 451s continued to fly, under the
463: 26: 592:, which were electronically controlled and high aspect-ratio 1831:
The Lioré et Olivier LeO 45 Series (Aircraft in Profile 173)
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List of aircraft of the French Air Force during World War II
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The Lioré et Olivier LeO 45 Series (Aircraft in Profile 173)
1873:, 16 May 1940, Vol. XXXVII, No. 1636. pp. 452c–d, 453. 1833:. Leatherhead, Surrey, UK: Profile Publications Ltd., 1967. 1182:
3,235 L (855 US gal; 712 imp gal)
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engines. Five LeO 451s were modified and were used by the
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Dimensione Cielo Aerei italiani nella 2° guerra mondiale
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up to 502 km/h (312 mph; 271 kn) on trials
753:. During this campaign, the LeO 451s flew a total of 855 1809:(Sampson Low Guides). Maidenhead, UK: Sampson Low, 1978. 536:
engines, and 12 aircraft which had been ordered for the
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3-bladed constant-speed propellers (LH and RH rotation)
635:, were attached at the extreme edges of the tailplane. 596:, the latter of which being depressed during takeoff. 559:
The LeO 45 featured an all-metal construction and a
1865:"The LeO 45 Bomber: Pride of France's Bomber Force" 1595: 1593: 1591: 1300:
Aircraft of comparable role, configuration, and era
416:. Lioré et Olivier was a long-time supplier to the 237: 229: 219: 211: 206: 198: 188: 180: 164: 156: 151: 131: 57:. Unsourced material may be challenged and removed. 1768: 1766: 1684: 1682: 1669: 1667: 1665: 1652: 1650: 1104:operated several captured aircraft as unit hacks. 1476: 1474: 1472: 1470: 1271:fixed forward-firing machine gun with 300 rounds 623:for the LeO 45's radial engines. Unlike typical 494:Production of LeO 45s in the SNCASE plant, 1938. 353:While numerous multi-seat aircraft, such as the 552:The Lioré et Olivier LeO 45 was a twin-engined 925:High-altitude version with turbo-supercharged 1968: 1624: 1622: 1620: 1235:2,900 km (1,800 mi, 1,600 nmi) 8: 1880:. Boulogne-Billancourt, France: ETAI. 2002. 1838:LeO 45, Amiot 350 et autre B4 (Docavia n°23) 1815:Avions: Toute l'Aéronautique et son histoire 703:), and around 130 lost in action in Europe. 757:, losing 29 LeO 451s in the process. After 1975: 1961: 1953: 1908:. Le Muy, France: Editions d'Along, 2004. 128: 1640: 1638: 1572: 1570: 1568: 1229:420 km/h (260 mph, 230 kn) 839:Production version variously fitted with 117:Learn how and when to remove this message 1549: 1547: 1545: 1543: 1541: 1539: 1537: 1535: 1525: 1523: 1521: 1519: 1517: 1515: 1513: 1511: 1509: 1507: 884:Post-war flying laboratory, 11 modified. 1904:Marchand, Patrick and Takamori, Junko. 1460: 1458: 1456: 1454: 1452: 1430: 1428: 1426: 1424: 1422: 1420: 1401: 1399: 1397: 1395: 1393: 1391: 1389: 1373: 1264:cannon in dorsal turret with 120 rounds 919:engines, one prototype left unfinished. 619:Mercier also used his patented type of 1807:World Aircraft: World War II, Volume I 1805:Angelucci, Enzo and Paolo Matricardi. 1760:Angelucci and Matricardi 1978, p. 255. 1383:Angelucci and Matricardi 1978, p. 254. 811:LeO 451 in North Africa, January, 1943 350:, and 20 four-engined heavy bombers. 7: 2196:Twin piston-engined tractor aircraft 1152:22.52 m (73 ft 11 in) 615:A LeO 45 with NACA cowlings in 1938. 55:adding citations to reliable sources 1146:17.17 m (56 ft 4 in) 1057:operated several captured aircraft. 260:. It had been designed for the new 256:that was used during and after the 1948:French airforce OrBat in June 1940 1158:5.24 m (17 ft 2 in) 25: 1943:French airforce OrBat in May 1940 420:, providing aircraft such as its 1847:(in French). Editions Larivière. 1840:(in French). Editions Larivière. 1353:List of aircraft of World War II 1267:1 × 7.5 mm (0.295 in) 1087: 1064: 1039: 1017: 985: 953:, 68 ordered. Also known as the 819:First prototype, powered by two 730:also carried a similar device). 668:of 25 June 1940, LeO 451 of the 445:prototype, powered by a pair of 137: 31: 1176:11,398 kg (25,128 lb) 1164:66 m (710 sq ft) 42:needs additional citations for 1843:Danel, Raymond and Cuny, Jean 1836:Danel, Raymond and Cuny, Jean 1260:1 × 20 mm (0.79 in) 1170:7,530 kg (16,601 lb) 941:Institut Géographique National 386:Service Technique Aéronautique 284:in the face of an invasion by 1: 1854:Roma, Edizioni Bizzarri, 1972 1614:16 May 1940, pp. 452c–d, 453. 1241:9,000 m (30,000 ft) 1102:United States Army Air Forces 908:Pratt & Whitney R-1830-67 718:coil for remotely detonating 2191:Aircraft first flown in 1937 2176:1930s French bomber aircraft 1117:3-view drawing of the LeO 45 670:Groupement de bombardement 6 1878:Les Avions Lioré Et Olivier 1859:Aéro-Journal Hors-Série N°5 1628:Sgarlato, Nico: "Leo 451", 739:Free-French attack on Dakar 405:was cancelled in favour of 324:Profile view of the LeO 45. 2212: 1739:October 1985, pp. 184–185. 1715:October 1985, pp. 185–186. 1703:October 1985, pp. 183–184. 2181:Lioré et Olivier aircraft 1991: 1602:October 1985 pp. 179–180. 567:and was covered by flush- 384:On 17 November 1934, the 316:Front view of the LeO 45. 290:Armistice of 22 June 1940 136: 66:"Lioré et Olivier LeO 45" 1109:Specifications (LeO 451) 857:Gnome & Rhône 14N-46 765:. They were replaced by 441:On 16 January 1937, the 132:Lioré et Olivier LeO 451 18:Lioré et Olivier LeO 451 1906:Loiré et Olivier LeO 45 1891:"Liore-et-Olivier 45... 1358:List of bomber aircraft 1131:General characteristics 737:in retaliation for the 662:Groupes de bombardement 586:self-sealing fuel tanks 367:Lioré et Olivier LeO 25 250:Lioré-et-Olivier LeO 45 1585:Danel 1967, pp. 10–11. 1562:Danel 1967, pp. 7, 10. 1118: 1031:Vichy French Air Force 949:Naval version for the 827:radial piston engines. 812: 747:Syria-Lebanon Campaign 648: 616: 495: 325: 317: 1817:(in French) (87): 2. 1727:October 1985, p. 185. 1691:October 1985, p. 184. 1659:October 1985, p. 183. 1446:October 1985, p. 179. 1116: 810: 646: 614: 493: 476:Gnome-Rhône 14N 20/21 333:On 1 April 1933, the 323: 315: 288:. As a result of the 1775:October 1985, p.189. 1501:Danel 1967, pp. 5–6. 1492:Danel 1967, pp. 4–5. 1483:October 1985, p.180. 1414:Danel 1967, pp. 3–4. 1262:Hispano-Suiza HS.404 969:engines, ten ordered 825:Hispano-Suiza 14AA-7 821:Hispano-Suiza 14AA-6 767:Handley-Page Halifax 655:At the start of the 602:Hispano-Suiza HS.404 451:Hispano-Suiza 14AA-7 447:Hispano-Suiza 14AA-6 51:improve this article 1893:A Study in Elegance 1174:Max takeoff weight: 1005:Aéronautique navale 917:Bristol Hercules II 724:Vickers Wellingtons 701:Aéronautique navale 639:Operational history 519:; it performed its 346:, 120 twin-engined 152:General information 1784:Danel 1967, p. 16. 1674:Aerei nella Storia 1644:Danel 1967, p. 11. 1630:Aerei nella Storia 1576:Danel 1967, p. 10. 1321:Douglas A-20 Havoc 1200:Gnome-Rhône 14N−49 1190:Gnome-Rhône 14N−48 1119: 967:Wright GR-2600-A5B 946:LeO 456 (LeO 451M) 861:Gnome-Rhône 14N-47 853:Gnome-Rhône 14N-39 849:Gnome-Rhône 14N-38 845:Gnome-Rhône 14N-49 841:Gnome-Rhône 14N-48 813: 649: 617: 534:Wright GR-2600-A5B 496: 470:on the tail unit. 326: 318: 2186:Low-wing aircraft 2163: 2162: 1898:Air International 1876:Hartmann Gérard. 1773:Air International 1737:Air International 1725:Air International 1713:Air International 1701:Air International 1689:Air International 1657:Air International 1600:Air International 1553:Danel 1967, p. 7. 1529:Danel 1967, p. 6. 1481:Air International 1464:Danel 1967, p. 5. 1444:Air International 1434:Danel 1967, p. 4. 1405:Danel 1967, p. 3. 1080:Regia Aeronautica 794:Regia Aeronautica 782:Ambérieu-en-Bugey 247: 246: 220:Introduction date 127: 126: 119: 101: 16:(Redirected from 2203: 1984:Lioré et Olivier 1977: 1970: 1963: 1954: 1933:LeO 451 (French) 1852:CACCIA ASSALTO 3 1829:Danel, Raymond. 1826: 1794: 1791: 1785: 1782: 1776: 1770: 1761: 1758: 1752: 1749:Dimensione Cielo 1746: 1740: 1734: 1728: 1722: 1716: 1710: 1704: 1698: 1692: 1686: 1677: 1671: 1660: 1654: 1645: 1642: 1633: 1626: 1615: 1609: 1603: 1597: 1586: 1583: 1577: 1574: 1563: 1560: 1554: 1551: 1530: 1527: 1502: 1499: 1493: 1490: 1484: 1478: 1465: 1462: 1447: 1441: 1435: 1432: 1415: 1412: 1406: 1403: 1384: 1381: 1336:Martin Baltimore 1311:Bristol Blenheim 1249: 1239:Service ceiling: 1216: 1133: 1093: 1091: 1090: 1074: 1070: 1068: 1067: 1049: 1045: 1043: 1042: 1022: 1021: 991: 989: 988: 790:Dewoitine D.520s 763:Tunisia Campaign 708:Vichy government 657:Battle of France 594:slotted ailerons 542:Battle of France 335:French Air Force 302:French Air Force 282:Battle of France 258:Second World War 193:French Air Force 144:Lioré et Olivier 141: 129: 122: 115: 111: 108: 102: 100: 59: 35: 27: 21: 2211: 2210: 2206: 2205: 2204: 2202: 2201: 2200: 2166: 2165: 2164: 2159: 1987: 1981: 1929: 1812: 1802: 1797: 1792: 1788: 1783: 1779: 1771: 1764: 1759: 1755: 1747: 1743: 1735: 1731: 1723: 1719: 1711: 1707: 1699: 1695: 1687: 1680: 1672: 1663: 1655: 1648: 1643: 1636: 1627: 1618: 1610: 1606: 1598: 1589: 1584: 1580: 1575: 1566: 1561: 1557: 1552: 1533: 1528: 1505: 1500: 1496: 1491: 1487: 1479: 1468: 1463: 1450: 1442: 1438: 1433: 1418: 1413: 1409: 1404: 1387: 1382: 1375: 1371: 1366: 1297: 1282: 1257: 1250: 1245: 1212: 1129: 1111: 1088: 1086: 1065: 1063: 1062: 1040: 1038: 1037: 1016: 986: 984: 981: 927:Gnome-Rhône 14R 805: 759:Operation Torch 712:Operation Torch 641: 550: 538:Greek Air Force 488: 439: 331: 310: 233:15 January 1937 147: 123: 112: 106: 103: 60: 58: 48: 36: 23: 22: 15: 12: 11: 5: 2209: 2207: 2199: 2198: 2193: 2188: 2183: 2178: 2168: 2167: 2161: 2160: 2158: 2157: 2152: 2147: 2142: 2137: 2132: 2127: 2122: 2117: 2112: 2107: 2102: 2097: 2088: 2083: 2078: 2073: 2068: 2063: 2058: 2053: 2048: 2043: 2038: 2033: 2028: 2023: 2018: 2013: 2008: 2003: 1998: 1992: 1989: 1988: 1982: 1980: 1979: 1972: 1965: 1957: 1951: 1950: 1945: 1940: 1935: 1928: 1927:External links 1925: 1924: 1923: 1922:, SNCASE, 1939 1917: 1902: 1889: 1874: 1862: 1855: 1848: 1841: 1834: 1827: 1810: 1801: 1798: 1796: 1795: 1786: 1777: 1762: 1753: 1751:, 1972, p. 66. 1741: 1729: 1717: 1705: 1693: 1678: 1661: 1646: 1634: 1616: 1604: 1587: 1578: 1564: 1555: 1531: 1503: 1494: 1485: 1466: 1448: 1436: 1416: 1407: 1385: 1372: 1370: 1367: 1365: 1362: 1361: 1360: 1355: 1350: 1339: 1338: 1333: 1328: 1326:Heinkel He 111 1323: 1318: 1316:Dornier Do 217 1313: 1308: 1296: 1293: 1292: 1291: 1290: 1289: 1286: 1277: 1276: 1275: 1272: 1265: 1243: 1242: 1236: 1230: 1224: 1221:Maximum speed: 1210: 1209: 1203: 1193: 1183: 1180:Fuel capacity: 1177: 1171: 1165: 1159: 1153: 1147: 1141: 1110: 1107: 1106: 1105: 1098: 1097: 1083: 1082: 1076: 1075: 1059: 1058: 1051: 1050: 1034: 1033: 1027: 1026: 1013: 1012: 1007: 1002: 1000:Armée de l'air 996: 995: 980: 977: 976: 975: 973: 970: 964: 961: 958: 947: 944: 933: 930: 923: 920: 914: 911: 904: 901: 899: 896: 893: 890: 888: 885: 882: 879: 872: 869: 867: 864: 837: 834: 831: 828: 817: 804: 801: 728:Junkers Ju 52s 722:(some British 640: 637: 577:parasitic drag 549: 546: 517:Paris Air Show 487: 484: 438: 437:Flight testing 435: 418:Armée de l'air 344:medium bombers 330: 327: 309: 306: 275:Armée de l'air 263:Armée de l'air 245: 244: 239: 235: 234: 231: 227: 226: 221: 217: 216: 213: 209: 208: 204: 203: 200: 196: 195: 190: 186: 185: 182: 178: 177: 168: 162: 161: 158: 154: 153: 149: 148: 142: 134: 133: 125: 124: 39: 37: 30: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2208: 2197: 2194: 2192: 2189: 2187: 2184: 2182: 2179: 2177: 2174: 2173: 2171: 2156: 2153: 2151: 2148: 2146: 2143: 2141: 2138: 2136: 2133: 2131: 2128: 2126: 2123: 2121: 2118: 2116: 2113: 2111: 2108: 2106: 2103: 2101: 2098: 2096: 2092: 2089: 2087: 2084: 2082: 2079: 2077: 2074: 2072: 2069: 2067: 2064: 2062: 2059: 2057: 2054: 2052: 2049: 2047: 2044: 2042: 2039: 2037: 2034: 2032: 2029: 2027: 2024: 2022: 2019: 2017: 2014: 2012: 2009: 2007: 2004: 2002: 1999: 1997: 1994: 1993: 1990: 1985: 1978: 1973: 1971: 1966: 1964: 1959: 1958: 1955: 1949: 1946: 1944: 1941: 1939: 1936: 1934: 1931: 1930: 1926: 1921: 1918: 1916:. (in French) 1915: 1914:2-914403-21-6 1911: 1907: 1903: 1900: 1899: 1894: 1890: 1887: 1886:2-7268-8607-8 1883: 1879: 1875: 1872: 1871: 1866: 1863: 1860: 1856: 1853: 1849: 1846: 1842: 1839: 1835: 1832: 1828: 1824: 1820: 1816: 1811: 1808: 1804: 1803: 1799: 1790: 1787: 1781: 1778: 1774: 1769: 1767: 1763: 1757: 1754: 1750: 1745: 1742: 1738: 1733: 1730: 1726: 1721: 1718: 1714: 1709: 1706: 1702: 1697: 1694: 1690: 1685: 1683: 1679: 1675: 1670: 1668: 1666: 1662: 1658: 1653: 1651: 1647: 1641: 1639: 1635: 1631: 1625: 1623: 1621: 1617: 1613: 1608: 1605: 1601: 1596: 1594: 1592: 1588: 1582: 1579: 1573: 1571: 1569: 1565: 1559: 1556: 1550: 1548: 1546: 1544: 1542: 1540: 1538: 1536: 1532: 1526: 1524: 1522: 1520: 1518: 1516: 1514: 1512: 1510: 1508: 1504: 1498: 1495: 1489: 1486: 1482: 1477: 1475: 1473: 1471: 1467: 1461: 1459: 1457: 1455: 1453: 1449: 1445: 1440: 1437: 1431: 1429: 1427: 1425: 1423: 1421: 1417: 1411: 1408: 1402: 1400: 1398: 1396: 1394: 1392: 1390: 1386: 1380: 1378: 1374: 1368: 1363: 1359: 1356: 1354: 1351: 1349: 1346: 1345: 1344: 1343: 1342:Related lists 1337: 1334: 1332: 1331:Junkers Ju 88 1329: 1327: 1324: 1322: 1319: 1317: 1314: 1312: 1309: 1307: 1304: 1303: 1302: 1301: 1294: 1287: 1284: 1283: 1281: 1278: 1273: 1270: 1266: 1263: 1259: 1258: 1256: 1253: 1252: 1251: 1248: 1240: 1237: 1234: 1231: 1228: 1227:Cruise speed: 1225: 1222: 1219: 1218: 1217: 1215: 1207: 1204: 1201: 1197: 1194: 1191: 1187: 1184: 1181: 1178: 1175: 1172: 1169: 1168:Empty weight: 1166: 1163: 1160: 1157: 1154: 1151: 1148: 1145: 1142: 1139: 1136: 1135: 1134: 1132: 1127: 1126: 1123: 1115: 1108: 1103: 1100: 1099: 1096: 1095:United States 1085: 1084: 1081: 1078: 1077: 1073: 1061: 1060: 1056: 1053: 1052: 1048: 1036: 1035: 1032: 1029: 1028: 1025: 1020: 1015: 1014: 1011: 1008: 1006: 1003: 1001: 998: 997: 994: 983: 982: 978: 974: 971: 968: 965: 962: 959: 956: 952: 948: 945: 942: 938: 934: 931: 928: 924: 921: 918: 915: 912: 909: 905: 902: 900: 897: 894: 891: 889: 886: 883: 880: 877: 873: 870: 868: 865: 862: 858: 854: 850: 846: 842: 838: 835: 832: 829: 826: 822: 818: 815: 814: 809: 802: 800: 797: 795: 791: 787: 783: 779: 774: 772: 771:B-26 Marauder 768: 764: 760: 756: 752: 748: 744: 740: 736: 731: 729: 725: 721: 717: 713: 709: 704: 702: 697: 693: 691: 686: 682: 677: 673: 671: 667: 663: 658: 653: 645: 638: 636: 634: 630: 626: 625:NACA cowlings 622: 613: 609: 607: 603: 597: 595: 591: 590:slotted flaps 587: 582: 578: 574: 570: 566: 562: 557: 555: 554:medium bomber 547: 545: 543: 539: 535: 529: 525: 522: 521:maiden flight 518: 512: 510: 506: 502: 492: 485: 483: 481: 477: 471: 469: 465: 460: 455: 452: 448: 444: 436: 434: 432: 428: 423: 419: 415: 410: 408: 404: 400: 394: 391: 388:released the 387: 382: 380: 376: 372: 368: 364: 360: 356: 351: 349: 348:heavy bombers 345: 341: 336: 328: 322: 314: 307: 305: 303: 299: 295: 291: 287: 283: 278: 276: 272: 271:maiden flight 267: 265: 264: 259: 255: 254:medium bomber 252:was a French 251: 243: 240: 236: 232: 228: 225: 222: 218: 214: 210: 205: 201: 197: 194: 191: 187: 183: 179: 176: 172: 169: 167: 163: 160:Medium bomber 159: 155: 150: 145: 140: 135: 130: 121: 118: 110: 99: 96: 92: 89: 85: 82: 78: 75: 71: 68: –  67: 63: 62:Find sources: 56: 52: 46: 45: 40:This article 38: 34: 29: 28: 19: 2134: 1919: 1905: 1896: 1892: 1877: 1868: 1858: 1851: 1844: 1837: 1830: 1814: 1806: 1800:Bibliography 1789: 1780: 1772: 1756: 1748: 1744: 1736: 1732: 1724: 1720: 1712: 1708: 1700: 1696: 1688: 1673: 1656: 1629: 1611: 1607: 1599: 1581: 1558: 1497: 1488: 1480: 1443: 1439: 1410: 1341: 1340: 1299: 1298: 1279: 1254: 1246: 1244: 1238: 1232: 1226: 1220: 1213: 1211: 1205: 1195: 1185: 1179: 1173: 1167: 1161: 1155: 1149: 1143: 1137: 1130: 1128: 1124: 1121: 1120: 1024:Vichy France 954: 798: 775: 732: 705: 698: 694: 690:Groupement 6 689: 685:Groupement 6 684: 681:Groupement 6 680: 678: 674: 669: 661: 654: 650: 618: 598: 558: 551: 530: 526: 513: 500: 497: 479: 472: 459:Villacoublay 456: 442: 440: 430: 417: 411: 406: 402: 398: 395: 389: 385: 383: 378: 375:Farman F.221 359:Bloch MB.210 355:Bloch MB.200 352: 339: 332: 294:Vichy France 286:Nazi Germany 279: 274: 268: 261: 249: 248: 230:First flight 212:Manufactured 199:Number built 189:Primary user 166:Manufacturer 113: 104: 94: 87: 80: 73: 61: 49:Please help 44:verification 41: 1888:(in French) 1861:(in French) 1214:Performance 1206:Propellers: 1196:Powerplant: 1186:Powerplant: 951:French Navy 780:factory in 726:and German 720:naval mines 308:Development 298:Free France 2170:Categories 2086:LeO H-23-2 1676:, 10/2005. 1364:References 1162:Wing area: 1010:Air France 937:SNECMA 14R 876:Air France 830:LeO 451.01 716:degaussing 581:cantilever 486:Production 480:LeO 451-01 427:cantilever 329:Background 77:newspapers 1823:1243-8650 1306:Amiot 354 1150:Wingspan: 1122:Data from 1055:Luftwaffe 979:Operators 932:LeO 455Ph 881:LeO 451E2 866:LeO 451GS 816:LeO 45.01 773:bombers. 735:Gibraltar 666:Armistice 633:trim tabs 565:stringers 561:monocoque 509:Amiot 350 505:Bloch 131 443:LeO 45-01 371:Potez 540 363:Amiot 143 215:1938–1942 2155:LeO H-49 2145:LeO H-47 2140:LeO H-46 2130:LeO H-43 2110:LeO H-28 2105:LeO H-27 2091:LeO H-24 2081:LeO H-23 2076:LeO H-22 2061:LeO H-19 2056:LeO H-18 2051:LeO H-15 2046:LeO H-13 2036:LeO H-10 1986:aircraft 1295:See also 1269:MAC 1934 1247:Armament 955:LeO 451M 892:LeO 451T 887:LeO 451M 871:LeO 451C 803:Variants 606:bomb bay 569:rivetted 107:May 2013 1156:Height: 1144:Length: 1047:Germany 972:LeO 459 963:LeO 458 960:LeO 457 922:LeO 455 913:LeO 454 903:LeO 453 898:LeO 452 863:engines 836:LeO 451 755:sorties 751:Tunisia 621:fairing 468:rudders 407:Plan II 238:Retired 207:History 184:Retired 146:LeO 451 91:scholar 2150:LeO 48 2135:LeO 45 2125:LeO 41 2120:LeO 40 2115:LeO 30 2100:LeO 25 2071:LeO 21 2066:LeO 20 2041:LeO 12 1912:  1884:  1870:Flight 1821:  1612:Flight 1280:Bombs: 1233:Range: 1092:  1069:  1044:  993:France 990:  778:SNCASE 629:torque 571:light 548:Design 501:Plan V 431:LeO 45 422:LeO 20 414:SNCASE 403:Plan I 379:Plan I 340:Plan I 181:Status 171:SNCASE 93:  86:  79:  72:  64:  2095:H-246 2031:LeO 9 2026:LeO 8 2021:LeO 7 2016:LeO 6 2011:LeO 5 2006:LeO 4 2001:LeO 3 1996:LeO 1 1369:Notes 1255:Guns: 1138:Crew: 1072:Italy 743:Syria 573:alloy 175:SNCAO 98:JSTOR 84:books 1910:ISBN 1882:ISBN 1819:ISSN 1198:1 × 1188:1 × 786:Lyon 769:and 507:and 466:and 464:fins 373:and 242:1957 224:1938 157:Type 70:news 1895:". 855:or 847:or 369:7, 296:as 202:561 53:by 2172:: 1867:. 1765:^ 1681:^ 1664:^ 1649:^ 1637:^ 1619:^ 1590:^ 1567:^ 1534:^ 1506:^ 1469:^ 1451:^ 1419:^ 1388:^ 1376:^ 859:/ 851:/ 843:/ 823:/ 449:/ 433:. 399:B4 390:B5 365:, 361:, 357:, 173:, 2093:/ 1976:e 1969:t 1962:v 1825:. 1140:4 957:. 943:. 878:. 784:( 120:) 114:( 109:) 105:( 95:· 88:· 81:· 74:· 47:. 20:)

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Lioré et Olivier LeO 451

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Lioré et Olivier
Manufacturer
SNCASE
SNCAO
French Air Force
1938
1957
medium bomber
Second World War
Armée de l'air
maiden flight
Battle of France
Nazi Germany
Armistice of 22 June 1940
Vichy France
Free France
French Air Force

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