Bréguet 482

Br 482
Role	Heavy bomber
National origin	France
Manufacturer	Bréguet Aviation
First flight	27 November 1947
Status	Abandoned prototype
Number built	2

The Bréguet 482 was a French four-engined heavy bomber aircraft designed just prior to the outbreak of the Second World War with two prototypes nearing completion when Germany invaded France in 1940, one of which was flown after the end of the war as an experimental platform.

Development and design

In December 1936 the French Air Ministry issued a specification for a four-seat, twin-engined bomber, with Bréguet's initial design, the Bréguet 480 (or Bre. 480) to be powered with the specified 914 kW (1,226 hp) Gnome et Rhône 14L radial engines,^[1] intended to carry 1,000 kg (2,200 lb) of bombs over a 2,500 km (1,600 mi) radius of action. Gnome et Rhône abandoned the 14L however, so, after considering a version powered by two Hispano-Suiza 12Y V12 engines, Bréguet reworked the design as the Bréguet 482, with four 1,007 kW (1,350 hp) Hispano-Suiza 12Z engines,^[1] with an order for two prototypes placed by the French Air Ministry on 12 May 1938.^[2]

The Bréguet 482 was a mid-winged monoplane of all-metal construction, with a clean, low-drag, oval section monocoque fuselage, twin tails and a retractable tailwheel undercarriage. The planned defensive armament was a 20 mm (0.79 in) Hispano-Suiza HS.404 cannon in a power-operated dorsal position, with a 7.5 mm (0.30 in) machine gun in the nose and a further two machine guns in ventral mountings.^[3] Up to 2,500 kg (5,500 lb) of bombs could be carried.^[4]

Operational history

Construction of the two prototypes was well advanced when Germany invaded France on 10 May 1940, and in late May the nearly complete prototypes were evacuated from Villacoublay near Paris, with the first prototype being sent to Bône in Algeria and the second to the Bréguet factory at Anglet, near Bayonne in the far south-west of France.^[3] The first prototype was destroyed in Algeria during a German air raid following the Allied invasion of French North Africa, but the second prototype remained untouched, despite the fact that Anglet was occupied by the Germans from 1940.^[3]

After the Germans had been driven out, Bréguet resumed work on the Br 482, and proposed to complete it with more powerful Hispano-Suiza 12Z engines and a heavier armament.^[1] The French Armée de l'Air had no requirement for it however, and it was decided to use the aircraft with some of the planned modifications as a research aircraft. It was flown for the first time in November 1947 and was used for various experiments, including testing of the 12Z engines.^[5]

Variants

Bre 480

Original design, powered by two Gnome-et-Rhône 14L radial engines. Unbuilt.^[6]

Bre 481

Proposed versions with two Hispano-Suiza 12Y engines and reduced wing area.^[6]

Bre 481 B4: Planned bomber version of Bre 481. Unbuilt.^[6]
Bre 481 Raid: Planned long-range record aircraft with further reduced wing area.^[2]

Bre 482 B4

Four-engined bomber powered by Hispano-Suiza 12Z engines.

Bre 482 No 1: First prototype - destroyed 1942.
Br 482 No 2: Second prototype, completed 1947 as three-seat research aircraft.

Specifications (Bréguet Br 482)

Data from ^[1]^[4]

General characteristics

Crew: three
Length: 18.86 m (61 ft 11 in)
Wingspan: 24.09 m (79 ft 0 in)
Height: 5.21 m (17 ft 1 in)
Wing area: 64.4 m² (693 sq ft)
Empty weight: 10,450 kg (23,038 lb)
Gross weight: 14,500 kg (31,967 lb)
Powerplant: 4 × Hispano-Suiza 12Z liquid-cooled V12 engine, 1,007 kW (1,350 hp) each (take off power)

Performance

Maximum speed: 560 km/h (350 mph, 300 kn) at 8,000 m (26,000 ft)
Cruise speed: 529 km/h (329 mph, 286 kn)
Range: 1,519 km (944 mi, 820 nmi)
Service ceiling: 12,000 m (39,000 ft)

Armament

None as completed.

References

Citations

^ ^a ^b ^c ^d ^e Bruno Parmentier (2003-01-04). "Breguet Br 482 - Bombardier lourd - Un siècle d'aviation française". Aviafrance.com. Retrieved 2022-08-31.
^ ^a ^b Green 1967, pp. 129, 131.
^ ^a ^b ^c Green 1967, p. 131
^ ^a ^b Green 1967, p. 132.
^ Green 1967, pp. 131–132
^ ^a ^b ^c Green 1967, p. 129

Bibliography

Cuny, Jean (1989). Les avions de combat français, 2: Chasse lourde, bombardement, assaut, exploration [French Combat Aircraft 2: Heavy Fighters, Bombers, Attack, Reconnaissance]. Docavia (in French). Vol. 30. Ed. Larivière. OCLC 36836833.
Cuny, Jean and Pierre Leyvastre. Les Avions Breguet (1940/1971). Paris: Editions Larivière, 1977. DOCAVIA vol. 6. OCLC 440863702
Green, William. War Planes of the Second World War: Volume Seven Bombers. London:Macdonald, 1967.
Lacaze, Henri (2016). Les avions Louis Breguet Paris [The Aircraft of Louis Breguet, Paris] (in French). Vol. 2: le règne du monoplan. Le Vigen, France. ISBN 978-2-914017-89-3.{{cite book}}: CS1 maint: location missing publisher (link)

[Br482-1] Bruno Parmentier (2003-01-04). "Breguet Br 482 - Bombardier lourd - Un siècle d'aviation française". Aviafrance.com. Retrieved 2022-08-31.

[Greenp1291-2] Green 1967, pp. 129, 131.

[Greenp131-3] Green 1967, p. 131

[Greenp132-4] Green 1967, p. 132.

[Greenp1312-5] Green 1967, pp. 131–132

[Greenp129-6] Green 1967, p. 129

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[2]

[3]

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[5]

[6]

v t e Breguet aircraft
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Model numbers	4 5 6 11 12 14 16 17 19 20 21 22 25 26T 27 270 271 273 274 280T 390T 392T 393T 410 460 462 470 482 500 521 522 530 610 670 690 691 693 694 695 696 730 731 761 763 765 790 791 792 890 891 892 893 894 895 900 901 902 904 905 906 940 941 960 1001 1002 1004 1050 1100 1150
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Helicopters	Gyroplane Gyroplane Laboratoire G.11E G.111