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ARSENAL VG33

 


Technical Specifications
Type
Mono-seat Fighter  with low wings
Date first flight
Octobre 6, 1938
Wingspan
10.80 m 
Lenght
8.55 m 
Height
3.35 m 
Wing Area
13.80 m2 
Empty Weight
2050 Kg 
Max. Takeoff Weight
2896 Kg 
Cruising Speed
km/h. 
Maximum Speed
558 km/h at 5200m 
Climbing Speed
5000 m in 6mn 26s 
Service ceilling
10900 m 
Range
1200 kms
Crew
1 Pilot
Motorization
1 Engine Hispano Suiza 12Y31 à 12cyl in V cooled by liquid of 860hp at 3850m
Armament
4x machine-guns MAC 34 M39 of 7.5mm in the wings with 500 rounds each
1x 20mm cannon Hispano Suiza HS-404 with 60 rounds in the axis of the propeller

 


Production

13 Arsenal VG30 have been built since the date of the first flight on October 6, 1938. They are divided into:

  • 10 Arsenal VG33
  • 1 Arsenal VG34
  • 1 Arsenal VG36
  • 1 Arsenal VG39

History

The Arsenal VG-33 comes from a 1937 program to replace the recently launched Morane MS406. These competitors are the Morane 450, the Dewoitine D520 and the CAO 200. The Arsenal VG-33, studied by two engineers Michel Vernisse and Jean Galtier (hence the initials "VG"), is made from non-strategic materials, Veneered and painted plywood. He initially received a Hispano-Suiza 12 Xcrs engine of 690 Cv, under the designation VG-30. He makes his first flight on October 6, 1938. The Munich crisis triggered an order for 200 units, for a series in a more powerful configuration, the VG-30 having been deemed inefficient, although as fast as the Morane MS406 already in service ...

The VG-31 and the VG-32, first developments of the Arsenal VG-30 were never completed (see chapter Versions). The VG-33, on the other hand, was manufactured in series with an order of 820 aircraft. It made its first flight in the spring of 1939 and starts its tests from the month of August. These proved promising since the device was faster than its competitor Dewoitine D520 yet more powerful.

It is difficult to determine the exact production of the Arsenal VG-33s, but 7 series aircraft declared "Good for war" were collected by the EAA 301 (Air Force Warehouse) between June and July 1940. These machines, stored in Villacoublay, were planned to equip the GC I / 2 but the events decided otherwise .. It is finally the Patrouille d'Etampes that will be in charge of evacuating the planes on Bordeaux. Two machines (Nos. 1 and 7) were used by GC I / 55.

About 160 Arsenal VG-33 cells were surprised by Armisitice on the assembly lines, of which 40 were almost completed.

The Germans recovered 5 VG-33 series, plus the VG-33 No. 01 after the Armistice.

It is difficult to say how this aircraft would have behaved in combat. Thanks to its aerodynamics, it was certainly faster than the Dewoitine D520, with a less powerful engine, but its wooden cell probably made it more fragile. Nevertheless, he could have been a serious opponent of the Messerschmitt 109, and his elegant silouette is now surrounded by a legend that leaves many regrets.


Versions

VG 31
The first evolution of the Arsenal VG-30, it was to receive a Hispano-Suiza engine 12y-31 and was equipped with a wing with the reduced wing surface, in order to solve a problem of centering. Wind tunnel tests show instability, and it was never completed. Its fuselage is finally associated with the wings of the prototype VG-33 n � 02 to give the VG-33 n � 3 of series.
VG 32
The VG32 was expected to be powered by a 1400-hp Allison V-1710-C15 engine and a variable-pitch Curtiss propeller. This engine required a lengthening of the nose of 42 cm It was armed of 2 20mm cannon and 2 machine-guns of 7.5mm. The prototype was not completed, due in part to delays in delivery of its American engine. A series of 400 aircraft was planned.
VG 34

The Arsenal VG-34 was to receive a Hispano-Suiza 12Y45 engine of 910 hp. It is assembled from the fuselage of the VG-33 n ° 02 never finished. It reached 576 km / h during the tests in the spring of 1940. A single prototype was built

VG 36
The Arsenal VG-36 is easily recognizable in profile: its air intake under the fuselage is more integrated, and therefore more aerodynamic. Equipped with the Hispano-suiza 12Y51 engine of 1100 hp, it was to replace the Arsenal VG-33 on the production lines. Only one specimen was built.
VG 39
The Arsenal VG-39 is powered by a Hispano-Suiza 89ter engine of 1280 hp. He was armed with 6 7.5mm machine guns. During the tests, the only prototype built reaches 624 km / h. It was to be followed by a series production, but this time equipped with a Hispano-suiza 12Z of 1200 hp.

 


Bibliography

1 ) _ Editions LELA PRESSE ; Hors Série Avions No7
- "La Chasse Française inconnue Mai-Juin 1940"

From Matthieu COMAS

 

2) _Aéro Editions -
- AERO JOURNAL No15"ARSENAL VG.33"

From Christian Jacques EHRENGARDT

 

3) Editions "Larivière": Fanatique de l'Aviation :
- No197; 198; 199 et 200

De Jean CUNY / Raymond DANEL

 

4) Editions "Larivière": Docavia No2:
- "L'Aviation de Chasse 1918-1940"

De Jean CUNY / Raymond DANEL

 

5) _ Éditions D.T.U
- REPLIC No84 de Aout 1998

 

 


Photos Album

 

 


Drawing 3 views


Sources

- Book : "La Chasse Française inconnue Mai-Juin 1940 " From Matthieu COMAS - Editions LELA Presse
- ...