Arsenal VG-33

 

1st Flight 1939

The Arsenal VG-33 was one of a series of fast French light fighter aircraft under development at the start of World War II, but which matured too late to see extensive service in the French Air Force during the Battle of France.

Variants

VG-30 – The original powerplant was the Potez 12Dc flat-12 air-cooled inline engine, but the prototype was fitted with a Hispano-Suiza 12Xcrs, and flew in this form in October 1938.

VG-31 – Hispano-Suiza 12Y-31 powered prototype.

VG-32 – Allison V-1710C-15 powered prototype.

VG-33 – First production model with Hispano-Suiza 12Y-31 engine (160 near completion at Fall of France. Unknown number completed.)

VG-34 – 697 kW (935 hp) Hispano-Suiza 12Y-45 engine. 360 mph (600 km/h). Prototype only.

VG-35 – VG-33 variant with newer engine. 

VG-36 – 746 kW (1,000 hp) Hispano-Suiza 12Y-51 engine. Prototype only.

VG-37 – Extended-range version of the VG-36. Not built.

VG-38 – projected for Hispano-Suiza 12Y-77 engine. Not built.

VG-39 – 954 kW (1,280 hp) Hispano-Suiza 12Z engine. 393 mph (655 km/h). 6x 7.5 mm MAC 1934 machine guns. Prototype only.

VG-39bis – proposed production version powered by a Hispano-Suiza 12Z-17.

VG-40 – projected variant powered by a Rolls Royce Merlin III.

VG-50 – projected variant powered by an Allison V-1710-39. (N.B. The designation VG 50 was also used for a projected four-engine trans-atlantic transport)

VG-60 – The ultimate projected variant powered by a 1,000 hp Hispano-Suiza 12Y-51 supercharged by a two-stage Sidlowsky-Planiol turbo-charger.

Specifications

Crew: 1

Length: 8.55 m (28 ft 1 in)

Wingspan: 10.8 m (35 ft 5 in)

Height: 3.31 m (10 ft 10 in)

Wing area: 14 m2 (150 sq ft)

Empty weight: 2,050 kg (4,519 lb)

Gross weight: 2,655 kg (5,853 lb)

Powerplant: 1 × Hispano-Suiza 12Y-31 V-12 liquid-cooled piston engine, 641 kW (860 hp)

Performance

Maximum speed: 558 km/h (347 mph, 301 kn)

Range: 1,200 km (750 mi, 650 nmi)

Service ceiling: 11,000 m (36,000 ft)

Wing loading: 164 kg/m2 (34 lb/sq ft)

Power/mass: 0.24 kW/kg (0.146 hp/lb)

Armament

1 × 20 mm Hispano-Suiza HS.404 cannon

4 × 7.5 mm MAC 1934 machine guns.

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