Project " Battle of France and Low Countries " : Add-on for BOB

[FAW_SAUMON]

Arsenal VG 33

Don't forget Internet site of "Arsenal VG 33" from Monsieur Franck DEVILLERS :

http://arsenalvg33.free.fr/entrer.htm



HISTORY OF VG33
CARACTERISTICS OF VG 33
COCKPICT & INSTRUMENTS OF VG 33
ARMAMENT OF VG33
MOTOR OF VG 33



Performances :

Powerplant: 1 Hispano-Suiza 12Y31 of 860 hp at 2400 tr/min at 3320 m.
Wingspan: 10,80 m
Length: 8,55 m
Height: 3,31 m
Wing area: 14 m2
Empty weight: 1716 Kg
Loaded weight: 2448 Kg
Maximum speed : 455 Km/h at level Sea; 554 Km/h at 8000 m ; 545 Km/h at 6000 m.
Time of climb at 5500 m: 6 min 5
Time of climb at 8000 m: 10 min 16
Service ceiling: 11 000 m
Range: 1200 km
Endurance: 2 hours 50 min
Armament: 1 canon HS 404 of 20 mm (60 per outboard gun) placed between cylinders of the engine + 4 machineguns MAC 34 M39 of 7,5 mm ( 500 per outboard gun).




Obviously that remains theory, one did not know his performances in operationnal configuration ...



The performances of "Arsenal VG 33" seems to be unreal with a less powerful engine of 60 hp than that of Dewoitine D-520
and with only 200 kg less in load. A VG 33 of series could climb to 5500 m in almost 3 min of less than D520... it's almost too beautiful one could say.



Would the performances of the production aircraft have been the same ones as those of the prototypes? (DO not forget that the conditions under test are always ideal !! ) The pilots of tests were enchanted by qualities of flight of the various prototypes tested, without hesitate to qualify them so exceptionnal.







2 unknown factors of size about Arsenal VG33 :

- which would have been the fire resistance of these planes out of wooden?
- Which would have been the resistance of the adhesive employed on this apparatus entirely built out of plywood?



Arsenal VG 33 had some developpments, here:

- VG 32 : alternative of VG 33 équiped with american powerplant Allison V1710 (C15) 1040 hp.
Biggest size of this constrained power plant to a lengthening of fuselage of 0,48 m... consequently improving the smoothness of plane.
Armament envisaged: 2 canons of 20 mm and 2 machinguns of 7,5 mm.
The first flight of l'appareil was pushed back in June 1940 by lack of the American engine (not launched in great series of production).
But it was too late...The VG32 has never take off.

- VG 34 : Powerplant HS 12Y45 of 910 Hp. 575 Km/h at 6200 m (official test).

- VG 35 : Powerplant HS 12Y51 of 1000 Hp. First Flight 25Th February 1940 ... it disappears without leaving traces after 15Th April 1940.

- VG 36 : alternative of VG 35, powerplant HS 12Y51 of 1000 Hp, it is provided an ventral radiator embedded in the fuselage
with a Flush exit thus a new canopy with side panes. Speed : 590 Km/h at 7000 m (official test).

VG 36 :






(Source : http://www.aviafrance.com )

- VG 39 : Powerplant HS 89ter of 1200 Hp. With this special powerplant, impossibility to place 1 gun of 20 mm enters the
cylinders of the engine as on the preceding models a armament of 6 machine-guns 7.5 mm in wing. Max SPEED : 625 Km/h at 5600 m (official test).


VG39 :


( source : http://www.aviafrance.com/ )


Projects :

- VG 37 : Development of VG 36 with powerplant HS 12Y51 (with carter de 89 ter) et compressor Szydlowski B generating 1200 Hp.

- VG 38 : Development of VG 36 with powerplant HS 12Y53 of 1000 Hp, with biturbo Brown-Boveri entrained by exhaust gaz.
Calculated speed : 670 Km/h at 8000 m.

- VG 40 : Development of VG 39 with unknown Rolls-Royce Engine or HS Engine 12Z generating 1600 Hp.
It is envisaged to assemble a radiator identical to that of the VG 36 and one armament of 6 machine-guns ( + 1 canon of 20 mm with HS Engine 12Z).
Wingspan 11,60 m and weight approched 3 tonnes.

VG 40 :



A small thing that i have forgotten :Arsenal VG33 seemed equal to Dewoitine D520 but it was easier to control (impossible to check now!!).











VG 33 tested by Luftwaffe after fall of France :




Only less of ten Arsenal VG33 flew in Squadron in defense of French factory in 1940 ...

ARSENAL VG33 from Squadron GC I/55 - June 1940:



Sources :

- Hors série n°7 "La chasse française inconnue de Mai-juin 1940" LELA presse 1998 (http://www.avions-bateaux.com)
- Aéro files n°1 " l'Arsenal VG 33 " Aéro-éditions 1998
- Aéro-journal n°46 (Dec 05/janvier 06): article "L'arsenal VG 33" - Aéro-éditions (http://www.aero-journal.com)
- http://www.airwar.ru/enc/fww2/vg30.html
- http://www.airwar.ru/enc/fww2/vg36.html
- http://www.airwar.ru/enc/fww2/vg39.html

Don't forget Internet site of "Arsenal VG 33" from Monsieur Franck DEVILLERS :

http://arsenalvg33.free.fr/entrer.htm[/b]