Bréguet Atlantic

The Bréguet Br-1150 Atlantic is a maritime Avion of patrol, designed by Bréguet Aviation and produced by the SECBAT. Marketed since 1967 by the company Dassault Aviation, it was built with 115 specimens in two versions brought into service by 4 different countries.

The Dassault Atlantique is indicated, in the Naval air force, by the letter M

Design

In 1967, the Dassault company which repurchases Breguet Aviation inherits two programs in the course of this company, the Atlantic and the Jaguar .
In 1956, the members of the Council of NATO note that, to succeed the American Lockheed P 2V-7 Neptune , it is necessary in open sea and an anti-submarine fight reconnaissance aircraft for them with long operating range. The program Breguet Br-1150 Atlantic (twin-engined turboprop jet Rolls Royce the Tyne) is selected.

This one with the characteristic to be the only plane of maritime patrol in the world especially designed for its mission and not derived from a civil commercial aircraft. First operation of European co-operation on this type of plane, the program profits from a certain identity of sight of the navy of war on the anti-submarine fight. The Breguet company is indicated as technical project superintendent of the appareil.
The October 2nd 1961, the European Company of construction of the plane Breguet Atlantic (SECBAT) is créée.
Four prototypes are constructed. The first flies to Toulouse, the October 21st 1961, with the hands of Bernard Witt with Rene Périneau and Romeo Zinzoni. The official order of the first section placed the June 6th 1963: 20 planes for the France, carried later on to 40 apparatuses, and 20 for the the Federal Republic of Germany. The last of the 60 apparatuses is delivered at the end of 1968 at the time when the Netherlands decide to acquire nine of them. The French Navy sells four at once of them to him, the five others come from a second launched series in January 1972. The October 25th 1968, the Italy decides to buy in its turn the apparatus and joins the European consortium AERITALIA and Alfa Romeo. The production is started again for 18 specimens, plus 4 intended to replace those sold by France for the Netherlands. In 1976, the French National marine sells three of her apparatuses with the Pakistan.

In the middle of the Seventies, and to face the evolution of the increasingly large threats of the Underwater and Ship S of surface, the French Marine decides to bring into service a new generation of Atlantic. Two prototypes ATL2 are constructed from two Atlantic of the first series (n° 42 and n° 69). The first accomplishes its first flight in Toulouse - Blagnac the May 8th 1981 with the hands of Jacques Jesberger, the engineer of test Jean-Pierre Bussenot and the mechanic of test Pierre Harquin. In June 1982, the ministry for French defense announces the official launch of the production of the ATL2. The market of industrialization of the ATL2 is notified in May 1984. The ATL2 is produced, for the cell, by a European consortium (Dornier and MBB for FRG, Dassault and the Aérospatiale for France, AERITALIA for Italy and SABCA-SONACA for the Belgium).

The project ATL3, new prototype which was to equip the French navy like that German and Italian, was abandoned.

From 2007, the ATL2 of the French marine will undergo a cure of youth by in particular receiving a new avionics and new systems of weapons. The new avionics will make it possible the apparatus to be in conformity with standards ICAO for a better integration in the airspace. The first apparatus thus modified carries the number of cell 1 .

Engagement

Of the 20 apparatuses sold with the German Navy (Marineflieger), the squadron Marinefliegergeschwader 3 Graf Zeppelin is composed of 14 apparatuses which form unit 1. Staffel and of 5 other planes of electronic information forming the 2. Staffel. These planes are based with Nordholz, on the the North Sea. The German Marine replaces as from June 2006 its Atlantic by 8 Lockheed P-3 Orion Dutch.
In France, two flotillas are still in service, the 21F based with Nimes-Let us park and the 23F based with Lann-Bihoué. They consist of 22 apparatuses ATL2 (6 are stored). The 22F and 24F were dismantled.
Italy has two flotillas. the 86° Gruppo Antisomergibili (group anti submarines) and 88° Gruppo Antisomergibili based with Cagliari - Elmas and with Catane - Sigonella.
the Pakistan has 3 apparatuses of this type forming the Squadron 29 based with Sharea-Faisal (of which a specimen shot down by India in 1998).
the Netherlands withdrew their Atlantic of the service.

Versions

ATL1: product with 87 specimens
ATL2: product with 28 specimens. The ATL2 is a deeply modified version of the ATL1. It preserves the cell and the engines of them. Modernization relates to the radar, unit ESM as well as the FLIR. It can carry the AM-39, the Mk48 torpedes and MU-90 as well as bombs guided laser in a near future (? - to see discussion). France projects to equip it with AM39 Exocet. It is noted that the othographe of the name with changed with the ATL2 ( " The Atlantic 2" instead of " Atlantic" ).
ATL3: modernized prototype equipped with two Allison AE 2100. The project was abandoned for lack of orders.

Other characteristics

Engines

The Tyne Mk21 is a mixed Turbopropulseur. It is composed of a BP compressor of 6 stages, of a compressor HP of 9 stages, of an annular combustion chamber, with 10 tubes with flames, of a turbine HP of a stage, a BP turbine of 3 stages.

Characteristic:

Powers:

Available on the tree: 5 740 ch
Provided by the turbine HP: 6 900 ch
Provided by the BP turbine: 9 850 ch
Absorptive by the compressor HP: 5.000 CH
Absorptive by the BP compressor: 3 950 ch
residual Push: 500 daN on the ground, decrease with the speed and the altitude

total Ratio compression: 13,6/1
initial Flow: 20 kg/s
Reducing:

Standard: epicycloidal to 2 stage
Report/ratio of reduction: 15,625/1

Propeller:

Many blades: 4
Diameter: 4.877 mm
Weight: 480 kg
Obstinate:

Small step flight: 14°
Flag: 84°
Reverse: -17°

Maximum speed: 971 tr/min

Physical properties of flow:

P2 : 14 bar
T2: 350 °C
P3 : 13 bar
T3: 1.000°C
P4 : 2 bar
T4: 400°C

GAP

The Atlantic is equipped with a GAP Astadyne AST 600 1A1. It is composed of a centrifugal compressor, of an annular combustion chamber with a centrifugal grout pipe system, of an axial flow turbine on three floors, of a compressor of load (intended to feed the air starters of GTP, and to ensure the pressurization on the ground), and of an alternator.

Characteristic:

Power: 60 kw
Consumption: 130 L/h

Sources

Plane: Driving NCD YEAR 204
: NCD YEAR 124

See too

Photographic gallery

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