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Sud-Ouest SO 4050 Vautour


Jet-Powered Fighter-Bomber Aircraft


Aviation / Aerospace

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The capable French Sud-Ouest Vautour line would later be replaced by the more advanced Dassault Mirage F1 series fighter jets.



Authored By: Staff Writer | Last Edited: 3/16/2019 | Content ©www.MilitaryFactory.com
These limited-production aircraft served with little distinction in French hands but were better served as night fighters and attack aircraft by the Israeli Air Force in later years. The aircraft is oft-noted for its design similarities to the Soviet Yakovlev Yak-28 but it became a very different aircraft altogether. The system was produced in only three mission-specific variants and formed the core of Soviet deterrent in France during the Cold War. The portly-looking Vautour (meaning "Vulture") served for an impressive 15 years with the French Air Force eventually being replaced by the more capable Mirage F1 series.

The Vautour was initially derived from half-scale research glider testing in powered and engine-less forms. From there, a full scale prototype was born with the designation of S.O. 4000 to which these were fitted with Hispano-Suiza turbojets (x2), license-production copies of the British Rolls-Royce Nene. With the arrival of the official designation, S.O. 4050, the Vautour was produced in three prototypes that included two 2-seat versions and a one single-seat version. the initial two-seat variant was designed as a night fighter while the second appeared as a single-seat ground-attack derivative. The final prototype was a two-seat dedicated bomber. All versions differed mainly from one another by their selection of powerplants. Engines were later standardized for production in the SNECMA Atar 101E 7,716 pound thrust engine regardless of dedicated role.

The three major variants became the Vautour II-A attack aircraft - fitted with 4 x 20mm cannons and bombs - the Vautour II-B - a dedicated bomber with a redesigned and glazed nose assembly for the bombardier - and the Vautour II-N nightfighter with the "N" in the designation indicating this specific role. The nightfighter variant was fitted with specialized interception radar in the nose and was of the two-seat design. In all, just some 70 aircraft of all three types were ever delivered despite the initial desire for the French government to field some 140 total Vautours.

Externally, the Vautour was a very standard aircraft design. The fuselage allowed for either the single or two-seat crew accommodation to be used depending on the production model. Engines were held outward of the fuselage under each wing and the crew sat high and forward on the stout airframe. A single vertical tail surface was held at rear with high-mounted elevators creating the distinct "T" tail assembly. Two hardpoints allowed for the carrying of air-to-air missiles or unguided rockets. Standard armament was a battery of 4 x 20mm cannons - two to a side in the nose.

Israel took delivery of at least 18 Vautours after testing their capabilities. These Vautours formed two squadrons and replaced aging British Mosquitos in attack and interception roles. The Vautour performed admirably well in Israeli hands in day or night roles. Their exposure to combat gradually diminished with the arrival of more capable French and American made aircraft.


Specifications



Year:
1958
Status
Retired, Out-of-Service
Crew
2
[ 149 Units ] :
Sud-Ouest (Sud-Est) - France
National flag of France National flag of Israel France; Israel
- Fighter
Length:
51.08 ft (15.57 m)
Width:
49.51 ft (15.09 m)
Height:
14.76 ft (4.5 m)
(Showcased structural dimension values pertain to the Sud-Ouest SO 4050 Vautour IIN production model)
Empty Weight:
22,046 lb (10,000 kg)
MTOW:
44,092 lb (20,000 kg)
(Diff: +22,046lb)
(Showcased weight values pertain to the Sud-Ouest SO 4050 Vautour IIN production model)
2 x SNECMA Atar 101E-3 turbojet engines developing 7,716 lb of thrust each.
(Showcased powerplant information pertains to the Sud-Ouest SO 4050 Vautour IIN production model)
Max Speed:
687 mph (1,105 kph; 597 kts)
Service Ceiling:
49,213 feet (15,000 m; 9.32 miles)
Max Range:
1,988 miles (3,200 km; 1,728 nm)
Rate-of-Climb:
11,800 ft/min (3,597 m/min)
(Showcased performance values pertain to the Sud-Ouest SO 4050 Vautour IIN production model; Compare this aircraft entry against any other in our database)
STANDARD:
4 x 30mm DEFA internal autocannons.

OPTIONAL:
240 x Unguided rockets.
2 x Air-to-Air Missiles (AAMs) OR conventional drop bombs / napalm bombs across four total hardpoints (inboard / outboard).

Maximu, loadout up to 9,700lb.
(Showcased armament details pertain to the Sud-Ouest SO 4050 Vautour IIN production model)
Vautour - Base Series Designation
S.O.M. 1 Un-powered Half-Scale Research Glider
S.O.M. 2 - Powered Half-Scale Research Glider; fitted with Rolls-Royce Derwent turbojet engine.
S.O. 4000 - Full Scale Prototype; fitted with 2 x Hispano-Suiza license-built Rolls-Royce-brand Nene turbojet engines.
S.O. 4050 - Series Designation; single (1 built) and dual (2 built) seat prototypes constructed - 3 total; fitted with 2 x SNECMA Atar 101B turbojet engines; third prototype fitted with Armstrong Siddeley Sapphire engines; 6 x pre-production aircraft.
S.O. 4050 Vautour II-A - 30 examples produced; fitted with 2 x SNECMA Atar 101E turbojet engines of 7,716lbs; single seat ground attack version.
S.O. 4050 Vautour IIB - 40 examples produced; two-seat bomber variant.
S.O. 4050 Vautour IIN - 70 examples produced; night-fighter variant with specialized equipment.
S.O. 4050 Vautour II1N - II-N models when fitted with slab-type tailplanes.
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