The Long Range Land Attack Projectile (LRLAP) is a cancelled

precision guided A precision-guided munition (PGM, smart weapon, smart munition, smart bomb) is a guided munition intended to precisely hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the First Gulf ...

155 mm naval

artillery shell A shell, in a military context, is a projectile whose payload contains an explosive, incendiary, or other chemical filling. Originally it was called a bombshell, but "shell" has come to be unambiguous in a military context. Modern usage so ...

for the

U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage o ...

's Advanced Gun System (AGS). LRLAP was developed and produced by

Lockheed Martin Missiles and Fire Control Lockheed Martin Missiles and Fire Control (MFC) is one of the four core business areas for American company Lockheed Martin. MFC provides air and missile defense systems; tactical missiles and air-to-ground precision strike weapon systems; logist ...

, the prime contractor being

BAE Systems BAE Systems plc (BAE) is a British multinational arms, security, and aerospace company based in London, England. It is the largest defence contractor in Europe, and ranked the seventh-largest in the world based on applicable 2021 revenue ...

. The LRLAP would have used a

rocket-assisted projectile A rocket-assisted projectile (RAP) is a cannon, howitzer, mortar, or recoilless rifle round incorporating a rocket motor for independent propulsion. This gives the projectile greater speed and range than a non-assisted ballistic shell, which is ...

with fin glide trajectory. The warhead effectiveness was considered comparable to that of the M795 artillery shell, and with the AGS it would have been capable of 6 round Multiple Rounds Simultaneous Impact (MRSI) in a span of 2 seconds. It would have used a blast fragmentation type warhead. The LRLAP was designed for use in the AGS and is not compatible with any other weapon. The AGS is used only on the ''Zumwalt''-class destroyer, with two AGSs on each ship. In November 2016, the Navy announced it had decided to cancel procurement of the LRLAP. This was due to rising costs resulting from the trimming of the ''Zumwalt''-class destroyer fleet to just three ships, raising individual shell cost to $800,000-$1 million, about as much as the

Tomahawk cruise missile The Tomahawk () Land Attack Missile (TLAM) is a long-range, all-weather, jet-powered, subsonic cruise missile that is primarily used by the United States Navy and Royal Navy in ship and submarine-based land-attack operations. Under contract fr ...

. About 90 rounds had been secured for testing aboard the three hulls, but a full buy of about 2,000 planned rounds would be about $1.8-$2 billion.New Warship’s Big Guns Have No Bullets
- Defensenews.com, 6 November 2016

Specifications

* Caliber: 155 mm. * Weight: ** Total: 225 lb (102 kg). ** Bursting charge: 24 lb (11 kg). * Length (propellant and projectile): 88 in (223 cm). * Guidance:

GPS The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...

INS INS or Ins or ''variant'', may refer to: Places * Ins, Switzerland, a municipality * Creech Air Force Base (IATA airport code INS) * Indonesia, ITF and UNDP code INS Biology *'' Ins'', a New World genus of bee flies * INS, the gene for the insulin ...

. * Precision:

Circular error probable In the military science of ballistics, circular error probable (CEP) (also circular error probability or circle of equal probability) is a measure of a weapon system's precision. It is defined as the radius of a circle, centered on the mean, ...

of 50 m or less. * Range: max. (Some sources report , or . * Warhead: Unitary

high-explosive An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An expl ...

.Long Range Land Attack Projectile (LRLAP) - BAE Systems
/ref> * Cost: :*2004 Manufacturer's estimated per-unit cost at full production: $35,000. :*150 LRLAP guided projectiles were procured in FY2015 with a unit cost of $476,946.67 :*unit cost in 2016: $800,000 to $1,000,000.

Program history

* June 2005 - Successful guided flight test of the LRLAP sets gun-launched guided projectile range record of . * September 2010 - Successful unguided flight test. * August 2011 - Two live fire tests of 45 nautical miles range. * June 2013 - Four full cycle live fire tests conducted. * September 2013 - Lockheed receives $18 million contract to transition the LRLAP to production. Fielding planned for 2016. * November 2016 - USN moves to cancel LRLAP projectiles citing excessive costs.

127 mm (5-inch) version

In cooperation with BAE Systems a version of LRLAP was designed to be used with the 127 mm

5"/54 caliber Mark 45 gun The 127 mm (5")/54 caliber (Mk 45) lightweight gun is a U.S. naval artillery gun mount consisting of a L54 Mark 19 gun on the Mark 45 mount. It was designed and built by United Defense, a company later acquired by BAE Systems Land & Armaments, ...

s used on most Navy ships. It was never produced.
/ref> Other guided munitions for these guns were Ballistic Trajectory Extended Range Munition, BTERM and

ERGM The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127 mm) shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 m ...

, which were also never produced.

Specifications

* Caliber: 127 mm (5-inch). * Length (propellant and projectile): * Guidance:

. * Range: max. * Warhead: Unitary

References

External links

Advanced Gun System/Long-Range Land Attack Projectile - Lockheed Martin

LRLAP Gallery- DD(X) National Team
{{webarchive, url=https://web.archive.org/web/20081202041922/http://www.ddxnationalteam.com/gallery/LRLAP, date=2 December 2008 155mm artillery shells Guided artillery shells

Specifications

Program history

127 mm (5-inch) version

Specifications

See also

References

External links