Super Mystere B.4

Archibald

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This was the last variant of the prolific Ouragan / Mystere family.
It replaced the Atar 101 of standard SMB-2 by an Atar 9. The Mirage III engine had 1500 kgp more power, and this aparently pushed top speed to mach 1.4 (this seem unclear, sources says mach 1.2). Only one was built and used as testbed for the
Atar 9.
Any 3-view, photos and specs of the aircraft ?
 

Deltafan

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Hi Archie ! :)


There were two SM B4 "test bed" for the ATAR 9 :

-SM B4-01 : first flight 09/02/58 with an ATAR 9 "stade 1" (5 400 kgp ?). Max speed M 1,06

-SM B4-02 : first flight 15/10/58, with an ATAR 9 "stade 1". Later With an ATAR 9 "stade 2" (6 000 kgp): Max speed : M 1,30


Before the SM B4 test bed, there was a "tout temps" (I don't know in english : all weather ?) project with an ATAR 9 and a little radar in a little "point" in the upper front of the air entry. But He was canceled.


Source : Docavia 13 : Les chasseurs Dassault Ouragans, Mystères et Super-mystères, Jean Cuny, 1980, page 389
 

Archibald

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Thanks Mr Ventilateur de Delta (as Google would translate your member name).
All weather is the correct word (Javelin FAW = Fighter All Weather).

I'm interested in the modifications from the SMB-2 to the SMB-4. I suppose the rear part of the aircraft was quite different because of the afterburner and longer engine.
Any 3-view or pics of the aircraft ? ;D

I'm not suprised there had been an AW (All Weather) SMB-2 project : all its ancestors has had their own two-seat AW variant !
(MD-451, MD-453, Mystere IVN).
The fact that the AW SMB-2 was never built surely explain by the fact that the Vautour was already in service and the Mirage IIIC was coming...

Model of the SMB-2 (in 1/72) is coming (can't remember what builder) and I still have some Atar 9 exhausts. ;D
 

Jemiba

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"..all its ancestors has had their own two-seat AW variant ! "

But if you have a look into Cunys "Les Avions De Combat Francais", then you'll
see, that for the SMB-4 "AW" the second crew member would have had to be
a very small person, the cockpit looks like a single seater. ;D
 

Archibald

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Maybe Mini-me as become NOSA in the french air force ? ;D
 

Skybolt

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Ecce SM B-4... 8) Not difficult, thanks to Jean Cuny Le Grand ;)
Project and prototype differed in details: project was longer (14.35 vs 13.95), heavier (9700 KG versus 9250) and slightly less fast in reaching 12,000 m (3' 50" vs 3' 45")
 

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Archibald

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Worst thing is I remembered I had the book after posting... hammering my head against the wall... ::)
 

blackkite

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General Characteristics Dassault Super Mystère B.4

First flight: February 1958
Status: Prototype
Role: Multipurpose jet fighter
Number built: 2
Crew: 1
Length: 14 m (46 ft)
Wingspan: 10.5 m (34.4 ft)
Wing area: 35 m² (376.7 ft²)
Height: 4.2 m (13.78 ft)
Empty weight: 7,000 kg (15,432 lbs)
Loaded weight: 10,000 kg (22,046 lbs)
Max. takeoff weight: 12,000 kg (26,455 lbs)
Powerplant: 1 x SNECMA Atar 9B afterburning turbojet
  • without afterburner: 4,250.1772 kgf (41.68 kN, 9,370 lbf)
  • with afterburner: 6,000 kgf (58.84 kN, 13,227.758 lbf)

Performance

Maximum speed:
  • At sea level: 1,100+ km/h (683.5+ mph, 594+ kts) (with & without full power)
  • At 11,000 m (36,089 ft): 1,487 km/h (924 mph, 803 kts) (full power)
Never-exceed speed: Mach 1.4 (1,728 km/h, 1,074 mph, 933 kts)

Rate of climb: 150 m/s (492 ft/s) (full power)

Time to 11,000 m (36,089 ft): 2.84 min

Service ceiling: 16,750 m (54,954 ft)

Range:
  • Normal: 1,100 km (683.5 mi, 594 nmi)
  • Max: 2,300 km (1,429 mi, 1,242 nmi)
Wing loading:
  • Empty weight: 200 kg/m (40.96 lb/ft²)
  • Loaded weight: 285.714286 kg/m (58.52 lb/ft²)
  • Max. takeoff weight: 342.857143 kg/m (70.22 lb/ft²)
Thrust/weight (without afterburner):
  • Empty weight: 0.60
  • Loaded weight: 0.425
  • Max. takeoff weight: 0.35
Thrust/weight (with afterburner):
  • Empty weight: 0.85
  • Loaded weight: 0.60
  • Max. takeoff weight: 0.50

Armament

Guns: 2 x 30mm DEFA 552 revolver cannons (150 rpg, 300 rds total)

Missiles:
  • 2 x AS-30L air-to-ground missiles
or
  • 2 x Rafael Shafrir-1 infrared-homing air-to-air missiles
Rockets: 2× Matra rocket pods with 18× SNEB 68 mm unguided rockets each

Bombs: 2 x 500 kg (2 x 1,100 lbs)
 
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