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AGM-158 Joint Air-to-Surface Standoff Missile

The AGM-158 JASSM (Joint Air-to-Surface Standoff Missile) is a conventional, air-to-ground and precision standoff missile. Its stealthy design and standoff range enables the JASSM to strike a wide range of valuable targets without entering hostile air defense zone. The JASSM project started as a joint U.S. Air Force and Navy project, but the Navy first postponed, then cancelled the procurement of the missiles.
AGM-158 Joint Air-to-Surface Standoff Missile

Status

In active service

Contractor

Manufacturer: Lockheed Martin

Timeline

1995 - JASSM program initiated (after the cancellation of the AGM-137 TSSAM (Tri-Service Standoff Attack Missile))
June 1996 - JASSM competition started between Lockheed Martin and McDonnell Douglas
April 1998 - Development contract for the EMD (Engineering and Manufacturing Development) phase of JASSM awarded to Lockheed Martin

AGM-158A

The AGM-158A is a stealthy cruise missile powered by a turbojet. It uses flip-out wings with control surfaces and a single vertical tail for flight control. It is guided by a jamming-resistant GPS-aided inertial navigation system, and uses an IIR (Imaging Infrared) seeker for autonomous pattern-based target selection and terminal homing. The missile is armed with a WDU-42/B insensitive munitions penetrating warhead and is also equipped with a data link to transmit status and location information until impact to assist bomb damage assessment.

Characteristics

Dimensions
Length: 4.27 meters 14 feet
Width: 55 centimeters 1.48 feet
Height: 45 centimeters 1.8 feet
Wingspan: 2.4 meters 7.87 feet
Weight
Weight: 1 020 kilograms 2 250 pounds
Warhead weight: 453.6 kilograms 1 000 pounds
Features
Range: 370+ kilometers 230+ miles
Engine thrust: 3 kilonewtons 680 pounds
Circular Error Probable (CEP): approximately 2.4 meters approximately 8 feet
Miscellaneous
Propulsion: Teledyne CAE J402-CA-100 turbojet engine
Warhead: WDU-42/B penetrator

Timeline

November 1999 - Flight testing began
January 2001 - Developmental testing began
December 2001 - Low-rate initial production approved
April 2003 - DT (Development Test) phase completed (two warhead-related test failures in late 2002 have delayed the program for at least three months)
May 2003 - First two OT (Operational Test) flight tests failed (because of engine and launcher problems)
October 2003 - Initial Operational Capability
May 2004 - Full-rate production approved by the U.S. Air Force

AGM-158B

The AGM-158B JASSM-ER is the extended-range version. It features around double the range of the baseline AGM-158 JASSM due to a more efficient turbofan engine and a larger internal fuel tank. However external dimensions of this missile are the same.

Characteristics

Dimensions
Length: 4.27 meters 14 feet
Width: 55 centimeters 1.48 feet
Height: 45 centimeters 1.8 feet
Wingspan: 2.4 meters 7.87 feet
Weight
Weight: 1 020 kilograms 2 250 pounds
Warhead weight: 453.6 kilograms 1 000 pounds
Features
Range: approximately 1 000 kilometers approximately 620 miles
Circular Error Probable (CEP): approximately 2.4 meters approximately 8 feet
Miscellaneous
Propulsion: Turbofan engine
Warhead: WDU-42/B penetrator

Timeline

April 2006 - Contract for the development of a Weapon Data Link (WDL) capability awarded (which enables the JASSM-ER system to engage relocatable targets)
May 2006 - First development flight test
July 2011 - Product Verification Test (PVT) successfully completed
March 2014 - First missiles delivered

AGM-158C

The AGM-158C Long Range Anti-Ship Missile (LRASM) is an anti-ship cruise missile, based on the AGM-158B JASSM-ER. The missile can either be launched from aircraft or, once fitted with a rocket booster it can be fired from the Mk-41 Vertical Launching System, which is used on many US warships.