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Aviation History
1958
1958 - 0838.PDF
Above, Dassault Etendard IV Right, Nord 1500 Griffon 2 Military Aircraft of the World ... ' it has reached Mach 1.5 to 1.6 on the level at 36,000ft without theassistance of the jettisonable SEPR two-barrel, two-power rocket pack which is to be standard. Primary propulsion is from a SNECMA Atar Gwith afterburner. Either a twin 30 mm gun pack or a single missile may be carried; and internal fuel load of 572 gal can be supplemented bytwo 137-gal wing tanks. These may be replaced by offensive stores. Low-pressure tyres allow take-off from hard ground and landing on grass.Span, 24ft 11 in; length, 41ft 6m; empty weight, 7,715 Ib; gross weight, clean, 11,025 Ib; max. Mach no. 1.8. Dassault Mirage Ilia The first of eight pre-production Illas hasnow flown. It is reported that 100 production versions have been ordered as intercepters. They will carry either Dassault Aida or Antigone fire-control radars and either a gun-pack or a missile. An afterburning Atar 9 giving 13,230 lb thrust and a two-barrel SEPR rocket giving 6,610 lbthrust will provide power. Wing span has been increased, the trailing edge swept back instead of slightly forward and t/c ratio reduced to4.5 per cent at the root and 3.4 per cent at the tips. Leading-edge sweep is 60 deg, wing area 365 sq ft and aspect ratio 1.97. Adjustable shock-cones are mounted in the lateral intakes.. Fully powered elevons provide lateral and longitudinal control with spring feel. The airframe xs area-ruled and the airbrakes consist of small panels hinged to both upper and lower wing surfaces near the leading edge. Span, 26/t lli'n; gross weight, between 13,000 Ib and 15,500 Ib; max.Mach no., about 2; ceiling, 82,000/t. Dassault Mirage Illb This is a two-seat version of the Ilia and is equally capable of performing interception or strike duties. The creware seated in tandem under a single-piece canopy. Gross weight is increased to 18,500 lb. Construction of a prototype is reported to havebegun and there seems to be a possibility of an order in the future. Performance is expected to be approximately the same as that of the Ilia. Leduc 0.22 Development of this turbojet- and ramjet-powered inter-cepter has now been discontinued. The SNECMA Atar D.3 turbojet provided power for an independent take-off, after which the Leducramjet, which occupied most of the main fuselage space, was lit to provide an equivalent ground-level thrust of 132,000 lb. The pilotwas accommodated in a conical, jettisonable nose capsule forming the forward part of the central nacelle housing the Atar. During ramjetflight the Atar was throttled back and provided only shaft power. Wing sweep was 30 deg and a normal nosewheel undercarriage was fitted. Nord 1500 Griffon 2 Development of this lightweight intercepterappears to be continuing, despite reports that the programme had been cancelled. It is a 60 deg delta with flaps, braking parachute and low-pressure tyres for operation from grass, controlled by powered elevons and a trimming slab foreplane. Powerplant is a SNECMA Atar 101Efeeding a Nord ramjet unit; and it is claimed that the 1500 became the first ramjet-powered aircraft in the world to exceed Mach 1 in levelflight. The date was May 17 last year. Span, about 26ft; length, about 46ft; gross weight, about 13,220 Ib;max. speed, 930 m.p.h. at 10,800/t. SNECMA Atar Volant Development of this remarkable Atar-powered VTO machine is continuing with tests of the P.3 version with an enclosed cockpit and a tilting ejection seat. No lifting surfaces have yet beenfitted, though Nord are engaged in constructing them. Present vehicles arc simply engine pods equipped with gyro-stabilization equipment con-trolling high-velocity air jets impinging on the turbojet efflux to provide stability and transiational flight. Final stage will be the addition of anannular wing containing also fuel tankage, so that the machine will be able to tilt into a horizontal attitude and fly relatively normally. Variousintercepter versions have been studied under the designations Charancon VI, Charancon VIII (powered by a Bristol Orpheus) and Hanneton IIIA.No performance details are yet available. Sud SO.4050 Vautour IIN This is the all-weather fighter version ofthe Vautour series and is now entering service with the French air force. The crew of two sit in tandem in a pressurized cockpit and have Sudejection seats. Fire-control radar is fitted together with a very varied armament. Fixed items include a pack of four DEFA 30 mm cannonand up to 232 rockets in the weapons bay. Further honeycomb packs or fuel tanks or Nord 5103 missiles may be carried externally; and all formsof armament are catered for by the automatic fire-control radar supplied by Compagnie Generale de Telegraphie Sans Fil. Dimensions andperformance are as stated for the bomber version of the Vautour. Sud SO.90S0 Trident II Powered by an SEPR twin-barrel rocketmotor in the tail and two Turbomeca Gabizos at the wing-tips, this machine reached a Mach number of 1.95 last year, climbed to 59,055ftin under 200 sec in April this year and set a world height record (since beaten) of 79,724ft last month. Development towards the Trident IIIintercepter has now been cancelled. BOMBERS AND STRIKE Dassault Mirage IV This is the deliberately misleading designationof the Dassault supersonic bomber, first reported in Flight for June 7, last year. Very little official information has been released about themachine, but it is believed to have a thin delta wing with two SNECMA Atars in pods suspended beneath it. The aircraft is relatively small andcarries a crew of two. The store will probably be carried externally. No performance details are available. Sud SO.4050 Vautour Now entering service with the French AirForce, the Vautour is being produced in three versions, namely as an Below, Sud SO.4050 Vautour IIN all-weather tighter Right, Sud SO.4050 Vautour bomber
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