The BLU-109/B is a hardened bunker buster penetration bomb used by the

United States Air Force The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...

(BLU is an acronym for Bomb Live Unit). As with other "bunker busters", it is intended to penetrate concrete shelters and other hardened structures before exploding. In addition to the US, it is part of the armament of the air forces of

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...

Netherlands , Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

, Pakistan,

Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in West Asia. Located in the centre of the Middle East, it covers the bulk of the Arabian Peninsula and has a land area of about , making it the List of Asian countries ...

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

, and

United Arab Emirates The United Arab Emirates (UAE), or simply the Emirates, is a country in West Asia, in the Middle East, at the eastern end of the Arabian Peninsula. It is a Federal monarchy, federal elective monarchy made up of Emirates of the United Arab E ...

Design

The BLU-109/B has a steel casing about thick. Its

warhead A warhead is the section of a device that contains the explosive agent or toxic (biological, chemical, or nuclear) material that is delivered by a missile, rocket (weapon), rocket, torpedo, or bomb. Classification Types of warheads include: *E ...

is filled with of tritonal. It has a mechanical-electrical delayed-action FMU-143 tail-

fuze In military munitions, a fuze (sometimes fuse) is the part of the device that initiates its function. In some applications, such as torpedoes, a fuze may be identified by function as the exploder. The relative complexity of even the earliest fu ...

. The BLU-109 entered service in

1985 The year 1985 was designated as the International Youth Year by the United Nations. Events January * January 1 ** The Internet's Domain Name System is created. ** Greenland withdraws from the European Economic Community as a result of a n ...

. It is also used as the warhead of some marks of the GBU-15 electro-optically

guided bomb A guided bomb (also known as a smart bomb, guided bomb unit, or GBU) is a precision-guided munition designed to achieve a smaller circular error probable (CEP). The creation of precision-guided munitions resulted in the retroactive renaming of ...

, the GBU-24 Paveway III and GBU-27 Paveway III

laser-guided bomb A laser-guided bomb (LGB) is a guided bomb that uses semi-active laser guidance to strike a designated target with greater accuracy than an unguided bomb. First developed by the United States during the Vietnam War, laser-guided bombs quickly pro ...

s, as well as the GBU-31 Joint Direct Attack Munition (JDAM) and AGM-130

air-to-surface missile An air-to-surface missile (ASM) or air-to-ground missile (AGM) is a missile designed to be launched from military aircraft at targets on land or sea. There are also unpowered guided glide bombs not considered missiles. The two most common prop ...

Variants

The BLU-118 is reportedly a

thermobaric A thermobaric weapon, also called an aerosol bomb, or a vacuum bomb, is a type of explosive weapon, explosive munition that works by Dust explosion, dispersing an aerosol cloud of gas, liquid or powdered explosive. The fuel is usually a single ...

explosive filler variation on the BLU-109 casing and basic bomb design. It contains PBXIH-135, a traditional explosive. In 2015,

General Dynamics General Dynamics Corporation (GD) is an American publicly traded aerospace and defense corporation headquartered in Reston, Virginia. As of 2020, it was the fifth largest defense contractor in the world by arms sales and fifth largest in the Unit ...

started a $7.2 million development of a version called HAMMER, which is intended to destroy chemical and biological substances by spreading dozens of Kinetic Fireballs Incendiaries (KFI) (not explosions) inside a bunker. The KFIs evolved out of the earlier Small Business Innovation Research (SBIR) program by Exquadrum, Inc. of Adelanto, California.

Operators

The BLU-109 has been sold to key US allies including South Korea, Israel, Greece, Saudi Arabia, UAE, Pakistan, and Turkey * :

* :

Royal Moroccan Air Force The Royal Moroccan Air Force (; ; ) is the air force of the Moroccan Armed Forces. History The Moroccan air force was formed on 14 May 1956 as the Sherifian Royal Aviation (). Its modern installations and bases were inherited from France (Bass ...

* :

Republic of Korea Air Force The Republic of Korea Air Force (ROKAF; ), also known as the ROK Air Force or South Korean Air Force, is the Air force, aerial and Space force, space warfare service branch of South Korea, operating under the Ministry of National Defense (South K ...

* :

Hellenic Air Force The Hellenic Air Force (HAF; , sometimes abbreviated as ΠΑ) is the air force of Greece (''Hellenic'' being the endonym for ''Greek'' in the Greek language). It is considered to be one of the largest air forces in NATO, and is globally placed 1 ...

* :

Turkish Air Force The Turkish Air Force () is the Air force, air and space force of the Turkish Armed Forces. It traces its origins to 1 June 1911 when it was founded as the Ottoman Aviation Squadrons, Aviation Squadrons by the Ottoman Empire. It was composed ...

* :

Israeli Air Force The Israeli Air Force (IAF; , commonly known as , ''Kheil HaAvir'', "Air Corps") operates as the aerial and space warfare branch of the Israel Defense Forces (IDF). It was founded on May 28, 1948, shortly after the Israeli Declaration of Indep ...

* : Serbian Air Force * :

Pakistan Air Force The Pakistan Air Force (PAF) (; ) is the aerial warfare branch of the Pakistan Armed Forces, tasked primarily with the aerial defence of Pakistan, with a secondary role of providing air support to the Pakistan Army and Pakistan Navy when re ...

* :

Royal Saudi Air Force The Royal Saudi Air Force (RSAF; ) is the military aviation, aviation branch of the Armed Forces of Saudi Arabia, Saudi Arabian Armed Forces. The Royal Saudi Air Force currently has wings, squadrons, and a special forces unit dedicated to comba ...

* : United Arab Emirates Air Force * :

Royal Netherlands Air Force The Royal Netherlands Air Force (RNLAF; , "Royal Air Force") is the military aviation branch of the Netherlands Armed Forces. It was created in 1953 to succeed its predecessor, the ''Luchtvaartafdeling'' () of the Dutch Army, which was founded ...

Operational history

In late 2023, the United States delivered 100 BLU-109 bombs to Israel. Israeli F-15I fighter jets are believed to have used BLU-109s with JDAM guidance kits in the strikes that killed

Hezbollah Hezbollah ( ; , , ) is a Lebanese Shia Islamist political party and paramilitary group. Hezbollah's paramilitary wing is the Jihad Council, and its political wing is the Loyalty to the Resistance Bloc party in the Lebanese Parliament. I ...

leader

Hassan Nasrallah Hassan Nasrallah (, ; 31 August 196027 September 2024) was a Lebanese cleric and politician who served as the third secretary-general of Hezbollah, a Shia Islamist political party and militia, from 1992 until his assassination in 2024. Bor ...

in Beirut on 27 September 2024.

References

External links