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BREGUET "Bizerte"

 


Technical Specifications
Type
Sea reconnaissance and sea research seaplane
Date first flight
September 11,1933
Wingspan
35.13 m 
Lenght
20.33 m 
Height
7.65 m 
Wing Area
170 m2 
Empty Weight
9150 Kg 
Max. Takeoff Weight
16000 Kg 
Cruising Speed
200 km/h. 
Maximum Speed
243 km/h à 1000m 
Climbing Speed
2000m in 14mn 
Service ceilling
6000m 
Range
2100kms 
Crew
8 Men
Motorization
3 Gnôme & Rhône engine 14 cyl in star 14 Kirs of 900Cv each
Armament
5 mobile 7.5mm Darne machines guns
300 Kgs of bombs

 


Production

36 Breguet Bizerte, all versions combined, were built as follows:
- 33 Breguet Bizerte Br521, prototype included
- 1 Breguet Bizerte Br522
- 2 Breguet Bizerte Br530 "Saigon"

To date, out of the 36 aircrafts manufactured, 0 are listed in the list below :

 


Histoire

In 1932, the Aéronautique Navale issued a program to acquire a long-range seaplane to carry out reconnaissance to replace the aging CAMS-55. Société Breguet responded to this program with the Breguet 531 Bizerte, derived from the Breguet 530 Saigon civil aircraft. The latter was none other than the Short Calcutta, for which Breguet had obtained a manufacturing license in 1931. The Breguet Bizerte, of all-metal construction, took the form of a seaplane with a sesquiplan hull powered by 3 Gnome-Rhône 14 Kdrs star-shaped engines of 845 hp. These were held between the two planes by masts. The defensive armament consisted of 5 machine guns of 7.5mm and the aircraft could carry an offensive charge of 300kgs, composed of bombs, mines or anti-submarine charges. Its crew was composed of 8 men. The Breguet Bre521 Bizerte was in competition with the Loire 70, the Lioré & Olivier LéO H42 and the Latécoère Laté-582. The Breguet Bre. 521 will be retained by the Navy. The Loire 70 will however be mass-produced as well, but for another use: colonial support and surveillance.


The Breguet Bre.521-01 prototype makes its first flight on September 11, 1933. The engines, initially devoid of bonnets, were fitted with Naca bonnets after the first tests. The Navy, very interested in the new aircraft, ordered 3 pre-series models before all the tests were completed. The flight of the first aircraft of this pre-series took place in 1935. The aircraft was very pleasant to fly and held the sea very well. Many modifications were integrated on the second aircraft at the request of the Navy. Thus, the cockpit canopy was moved forward, two side gunnery stations were added behind the cockpit and the gunnery station located in the bow was removed. These modifications will be integrated on the standard models.


The 31 Breguet Bre521 Bizerte, including the prototype, were manufactured and delivered until March 1938. The engine chosen for the series consisted of three 900 hp Gnome-Rhône 14Kir engines.
The Navy will complete this first series with an order for three additional units. The first two of this series will receive numerous modifications: Thus, the cockpit canopy is moved forward, two side firing stations are added behind the cockpit and the firing station located in the bow is removed. The third unit will be powered by Hispano-Suiza 14AA double-star, 1,000 hp engines. It will take the designation of Breguet Bre. 522. However, it will be returned to the Bre standard. 521 at the beginning of 1940. The 34 aircraft will be chronologically assigned to the E2, E3, E1, E5 and E9 squadrons. They will carry out surveillance missions along the French coast. After the Armistice, many squadrons were disbanded and only the E1 and E9, which became 1E and 9E, were kept with 5 and 4 Bre respectively. 521 Bizerte.


After the German invasion of the free zone on 11 November 1942, the Germans seized 9 Breguet Bre521 Bizerte still in service and 8 others in storage to transfer them to the Luftwaffe. These were used in rescue missions along the Atlantic coast. The Germans used these aircraft under German colours until the armistice. The reborn Air Force used two of these aircraft from March to November 1945. The last Breguet Bre. 521 Bizerte will be scrapped in 1946.

 


Versions

The Breguet Bizerte has been available in three versions:

Version
Quick description
Breguet Br 521 1 prototype and 32 production copies produced.
Breguet Br 522
1 single copy made. Aerodynamic version more worked and equipped with more powerful Hispano-suiza 14Aa engines of 1000hp.
Breguet Br 530 "Saigon"
2 copies produced. Commercial version powered by 3 Hispano-Suiza 12Ybr of 785Cv. The aircraft can carry 17 passengers including 6 in 1st Class. These aircraft, delivered to Air-France in early 1935, will be used on the Marseille-Ajaccio-Tunis line.

 


Bibliography
1) _ Editions Larivière :
-Le Fanatique de l'Aviation No176 - 177 - 178 - 179 - 183 - 189 - 190 : Le Breguet Bizerte
From Gérard BOUSQUET

 


Photos Album

 


Drawing 3 views

 

Links to Website
"French Air Force"