BREGUET Br270

 


Technical Specifications
Type
Biplace d'Observation sesquiplan
Date first flight
February 23, 1929
Wingspan
17,01 m 
Lenght
9,76 m 
Height
3,58 m 
Wing Area
49,67 m2 
Empty Weight
1676 Kg 
Max. Takeoff Weight
2900 Kg 
Cruising Speed
km/h. 
Maximum Speed
227 km/h at 3000m 
Climbing Speed
3.4 m/s
Service ceilling
7750 m 
Range
1000 kms
Crew
2 Men
Motorization
1 Engine Hispano Suiza 12 Hb with 12 Cylindres in V liquid-cooled of 500 Hp in take-off
Armament
1 machine-gun Vickers de 7.5mm to the right in the fuselage, firing in fighting
2 twin-machine-guns Lewis on turret for rear defense
120kg of bombs in a bomb bay

 


Production

172 Breguet 270 were built after the prototype that made its first flight on February 23, 1929 . They are divided in :

  • 1 prototype named "Breguet 27"
  • 9 appareils of pre-série
  • 85 Breguet 270 ordered by the French Air Force, on december 1931
  • 45 Breguet 271 ordered by the French Air Force, on december 1932
  • 21 Breguet 273 : 15 for the Venezuela and 6 for the China
  • 1 Breguet 274

To date, out of the 172 aircraft manufactured , 34 are listed in the list below :

 


Historical

In 1926, the Breguet Company launched the study of an aircraft in response to a specification of technical services for an Obsevation aircraft. It must have a good visibility towards the rear for the observer: it will be the Breguet 27.

The latter is unusual in appearance: tailsurfaces is put at the end of a beam which makes up the back part of the fuselage.Its wing is of the sesquiplan type, it means that the lower wing is shorter than the upper one. The latter, twice as long as the aircraft, has a comfortable wing surface. The apparatus is entirely metallic in design, but in order to reduce costs, the use of light alloy is reduced to the just necessary. The assembly method adopted is similar to that used in automobile manufacture. It is powered by a Hispano-Suiza 12Hb of 500ch with liquid cooling. It has a large landing gear. His armament consisted of a pair of 7.7mm Lewis machine guns in the back, a synchronized machine-gun in rear defense and could carry 120kg of Bombs.

The aircraft made its first flight on 23 February 1929. The tests will show vibrations at the level of the tail fins which will be modified, but without completely resolving this problem. The first prototypes were financed by Breguet's own funds, and it was not until 1930 that the air Force ordered 50 aircraft, which had become Breguet 270 in the meantime. The need will soon be increased to 87 machines. An additional order will be issued in 1932: in the end, 140 Breguet 270 will be built

While the production is launched, the prototype 01 registered F-AJRC, carries out a promotional tour which will end in Madagascar. The Breguet 270 will be sold for export, Venezuela and Peru. A version equipped with a Gnome Rhone K9 of 680ch will be tested on the basis of the n ° 15 and proposed to Serbia. Although the engine was manufactured under license, Serbia would not order and the aircraft would join the Military Air Force in 1934.

The aircraft is available in several versions. The Breguet 271 receives a Hispano-Suiza engine 12Xbrs of 650hp more powerful, which allows it to pass its payload to 1000kg. 3 copies will be made from the Breguet 27 n ° 2, 3 and 5. The Breguet 273 is powered by a Hispano-suiza 12Ybrs of 860hp with a variable pitch propeller. More efficient, the device can carry 400kg of bombs. The prototype, registered F-ANFX, makes its first flight in April 1934. This version will be bought by Venezuela (15 Ex.) And by China (6 Ex.). We can also mention the Breguet 274, version studied for bombing and powered by a radial engine Gnome-Rhone 760hp with a three-bladed propeller. He can carry 800kg of bombs. The prototype registered F-ANHM will tour Europe. Finally, a version with a single canopy covering both crew members and larger capacity tanks will be used for links.

The Breguet 27 of series arrives in unity in 1933 and it is the 3rd Squadron of the 32nd Squadron which receives the first apparatuses in January 1933 in Dijon.

At the outbreak of hostilities, the Breguet 27 is present in nine GAOs (Aerial Observation Group). Although outdated, they will carry out reconnaissance missions over enemy lines but will gradually be removed from the conbats at the rate of arrival of the new aircraft (Potez 63-11).On May 10th, 1940, there is still Breguet 27 in the front line, and in Armisitice 49 aircraft will be still listed. They will quickly be reformed.


Versions

Breguet 270

Base version powered by a liquid-cooled 500 hp Hispano-Suiza 12 Hb. It can carry 120kg of bombs.

Breguet 271
The Breguet 271 receives a Hispano-Suiza engine 12Xbrs of 650hp more powerful, which allows it to pass its payload to 1000kg.
Breguet 273
The Breguet 273 is powered by a Hispano-suiza 12Ybrs 860hp with a variable pitch propeller. More efficient, the aircraft can carry 400kg of bombs. The prototype, registered F-ANFX, made its first flight in April 1934.
Breguet 274
The Breguet 274, version studied for the bombing and powered by a radial Engine Gnome-Rhone 760hp with air cooling with a three-bladed propeller. He can carry 800kg of bombs.


Bibliography

1 )_ Editions LELA PRESSE ; Revue "Avions" n°111, 113, 114, 115 et 116
- "Le Breguet 27: Premier des "tout acier" et sa descendance"

 

2)_ AIR MAGAZINE
- N°7 "Breguet 27"

 

 

 


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