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M51 (missile)

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M51 SLBM
TypeSLBM
Service history
In service27 September 2010
Production history
DesignerArianeGroup
ManufacturerArianeGroup
Specifications
Mass52,000 kg
Length12.0 m
Diameter2.3 m
WarheadM51.1 = 6 to 10 TN 75 MIRV 110 kiloton (kt) (420 TJ), with penetration aids.
M51.2 (2015) = using the new Tête nucléaire océanique 100 kt / CEP 150–200 m[1][2]
Enginethree-stage solid-fuel rocket (ammonium perchlorate composite propellant)
Operational
range
Estimated 8,000–10,000 km[3][4] (the range is classified information)
Maximum speed Mach 25[3][4]
Guidance
system
Astro-inertial guidance. Galileo system is planned.
Launch
platform

The M51 SLBM is a French submarine-launched ballistic missile, built by ArianeGroup, and deployed with the French Navy. Designed to replace the M45 SLBM (in French terminology the MSBS – Mer-Sol-Balistique-Stratégique "Sea-ground-Strategic ballistic"), it was first deployed in 2010.

Each missile carries six to ten independently targetable TN 75 thermonuclear warheads.

The three-stage engine of the M51 is directly derived from the solid propellant boosters of Ariane 5.[5] Like other blunt-nosed SLBM examples, such as the Trident D5, the M51 uses an extensible aerospike in the nose.

The missiles are a compromise over the M5 SLBM design, which was to have a range of 11,000 km (6,800 mi) and carry ten new-generation tête nucléaire océanique ("oceanic nuclear warhead") MIRVs.[6] Design work on the M5 started in the late 1980s by Aérospatiale,[7] before the programme was renamed the M51 in 1996, when development costs decreased by 20 percent.[8] The M51 entered service in 2010.[9]

Development

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Comparison of different nuclear systems: left, the SNLE (Redoutable type) with the M4 missile; right, the SNLE-NG (Triomphant type) with the previous M45 missile and the current M51 missile

After having spent €5 billion ($6.7 billion) developing the missile, the French government placed a €3 billion ($3.9 billion) order with EADS SPACE Transportation for the M51 in December 2004. The contract covered serial production of the M51 for 10 years, with the company to be responsible for sustained readiness support throughout the missile's life.[10][11]

The M51 performed its first flight test (unarmed) on 9 November 2006 from the French missile flight test centre in Biscarrosse (Landes). The target was reached twenty minutes later, in the north-west of the Atlantic Ocean.[12]

A second and third successful test were carried out on 21 June 2007[13] and 13 November 2008.[14]

On 27 January 2010, at 9h25, a missile was launched underwater by Le Terrible, from Audierne Bay off the coast of Brittany in north-western France.[15] The missile reached its target 2,000 kilometres (1,100 nmi) off South Carolina; the 4,500-kilometre (2,400 nmi) flight took less than 20 minutes.[16][17]

A 10 July 2010 test validated the Triomphant-class submarine's capacity to launch the M51 in operational conditions.[18]

On 5 May 2013, an M51 flight test missile failed after being fired by a submerged ballistic missile submarine off the coast of Brittany. This was the first failed launch of the M51 after five successful launches since 2006.[19]

In 2014 Airbus signed a deal with the French government for development work on an upgrade designated M51.3 to equip the SNLE 3G.

On 30 September 2015, an M51 was successfully test-flown from a land-based missile site near Biscarrosse to a desolate target in the North Atlantic.[20]

On 10 May 2016 Airbus and Safran signed a joint 50-50 partnership to develop the M51.3 upgrade intended to enter service around 2025.[21]

On 12 June 2020, a successful test launch of an M51.3 missile (supposedly) was conducted from the Le Téméraire Triomphant-class submarine off the south-west tip of Finistère (Brittany).[22]

On April 28, 2021 French Ministry of Armed Forces announced that it had tested an M51 submarine-launched ballistic missile (SLBM). The test was not launched from a French Navy Triomphant-class submarine but from a land based facility located in South Western France.[23]

On April 19, 2023 the French Ministry of Armed Forces announced another M51 test, launched from the French Navy Le Terrible SSBN.[24]

M51.3 was test fired successfully in November 2023.[25]

Operators

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 France

See also

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Sources and references

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  1. ^ Paul Quilès (ancien ministre de la Défense), Bernard Norlain & Jean-Marie Collin, Arrêtez la bombe, Annexe 4, éditions du Cherche-midi, Paris, 2013 Lire en ligne
  2. ^ "Dissuasion : F. Hollande détaille sa vision et l'arsenal français". Mer et Marine. 20 February 2015.
  3. ^ a b "French Navy SSBN 'Le Téméraire' Test Fired M51 SLBM in Operational Conditions". 12 June 2020.
  4. ^ a b "French Navy's ballistic submarine test fires M51 missile". 12 June 2020.
  5. ^ "M-5 - France Nuclear Forces". www.globalsecurity.org.
  6. ^ "M-5 / M-51". Retrieved 30 November 2014.
  7. ^ Status of Major U. S., European Defense, Aerospace Programs, Aviation Week & Space Technology, March 20, 1989, 130(12):35, ISSN 0005-2175.
  8. ^ Macrae, Duncan (1 January 2003). "A Darpa for Europe?". Interavia Business & Technology. Archived from the original on 10 April 2016. Retrieved 23 May 2015.
  9. ^ "M51: a new generation of missile". Astrium. Archived from the original on 26 July 2013. Retrieved 26 July 2013.
  10. ^ "France announces euro3 billion nuclear missile deal". Associated Press. 23 December 2004. Archived from the original on 24 September 2015. Retrieved 27 May 2015.
  11. ^ "EADS SPACE Transportation To Produce French M51 Missile". Defense Daily. 11 January 2005. Archived from the original on 24 September 2015. Retrieved 22 August 2015.
  12. ^ "Test réussi pour le M51, futur missile nucléaire à longue portée français". Le Monde.fr. 9 November 2006 – via Le Monde.
  13. ^ (in French) Second successful launch of the M51 missile, press release of the French ministry of Defence
  14. ^ (in French) Third M51 missile experimental launch, French ministry of Defence
  15. ^ Un missile M-51 a été tiré depuis un sous-marin en plongée ce matin Archived 17 July 2014 at the Wayback Machine, Jean-Dominique Merchet, Libération
  16. ^ Le missile M-51 est retombé à 2000 kilomètres des côtes américaines Archived 26 February 2014 at the Wayback Machine, Jean-Dominique Merchet, Libération
  17. ^ Tir d’essai du missile M51, Ministry of Defence
  18. ^ "Le Terrible Qualifies for Operational Launch of M51 Missile". Defence.Professionals. 13 July 2010. Archived from the original on 11 October 2010. Retrieved 13 July 2010.
  19. ^ "M51 Nuclear Missile Fails on a Test Launch from a Newly Upgraded Submarine". Defense Update. Defense-Update.com. 5 May 2013. Retrieved 30 November 2014.
  20. ^ "Tir d'essai réussi pour le missile M51". Ministère de la Défense. Retrieved 30 September 2015.
  21. ^ Tran, Pierre (10 May 2016). "Airbus and Safran Agree to Space Launcher Joint Venture". Defense News. Archived from the original on 15 January 2019. Retrieved 15 January 2019.
  22. ^ "France Just Test Fired A Submarine Launched Ballistic Missile In The Atlantic (Updated)". thedrive.com. 12 June 2020. Retrieved 12 June 2020.
  23. ^ Vavasseur, Xavier (28 April 2021). "Video: France Successfully Tests an M51 Ballistic Missile". Naval News. Retrieved 28 April 2021.
  24. ^ "France's SSBN Le Terrible successfully fires M51 ballistic missile". Naval Recognition. 19 April 2023.
  25. ^ "France test-fires long-range ballistic missile to boost nuclear deterrence". 19 November 2023.
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