AGM-158 JASSM, US Air to Surface Missile

The AGM-158 JASSM (Joint Air-to-Surface Standoff Missile) is a low observable standoff cruise missile developed in the United States. It is a large, semi-stealthy long-range weapon of the 2,000 pounds (910 kg) class. The missile began development in 1995, however a number of problems during its testing delayed its introduction into service until 2009. The JASSM is now entering service with a number of foreign nations as well, including Australia, the Netherlands and South Korea. An extended range version of the missile, the AGM-158B JASSM-ER (Joint Air-to-Surface Standoff Missile-Extended Range), is under development and is expected to deploy in 2013.

AGM-158 Joint Air-to-Surface Standoff Missile
Type	Air-to-surface cruise missile
Place of origin	United States
Service history
In service	1999 - present
Used by	United States Air Force Royal Australian Air Force Republic of Korea Air Force Royal Netherlands Air Force
Production history
Manufacturer	Lockheed Martin
Unit cost	$700,000 (USD)
Produced	1998 - present
Specifications
Weight	2250 lb (1021 kg)
Length	14 ft (4.72 m)
Engine	Teledyne CAE J402-CA-100 turbojet 3.0 kN (680 lb)
Operational range	>230 mi (>370 km)
Guidance system	Global Positioning System (GPS)-aided inertial navigation system (INS)
Launch platform	B-1 Lancer B-2 Spirit B-52 Stratofortress F-15E Strike Eagle F-16 Fighting Falcon F/A-18E/F Super Hornet P-3 Orion S-3 Viking

The US Air Force studied various improvements to the AGM-158, resulting in the development of the JASSM-Extended Range (JASSM-ER), which received the designation AGM-158B in 2002. Using a more efficient engine and larger fuel volume in an airframe with the same external dimensions as the JASSM, the JASSM-ER is intended to have a range of over 575 miles (925 km) as compared to the JASSM's range of about 230 miles (370 km). Other possible improvements were studied but ultimately not pursued, including a submunition dispenser warhead, new types of homing head, and a new engine giving ranges in excess of 1,000 km (600 mi). The JASSM-ER has 70% hardware commonality and 95% software commonality with the original AGM-158 JASSM.

The first flight test of the JASSM-ER occurred on May 18, 2006 when a missile was launched from a U.S. Air Force B-1 bomber at the White Sands Missile Range in New Mexico. The JASSM-ER is expected to be fully operational and ready to deploy in 2013. While both the original JASSM and the JASSM-ER are several inches too long to be carried in the internal weapons bay of the F-35 Lightning II, the F-35 will be able to carry both missiles externally, although this will compromise the aircraft's stealth features.

AGM-158

• Length: 4.27 m (14 ft)
• Wingspan: 2.4 m (7 ft 11 in)
• Weight: 975 kg (2,150 lb)
• Speed: Subsonic
• Range: >370 km (>230 mi)
• Propulsion: Teledyne CAE J402-CA-100 turbojet; thrust 3.0 kN (680 lbf)
• Warhead: 450 kg (1000 lb) WDU-42/B penetrator
• Production unit cost: $700,000
• Total program cost: $3,000,000,000
• Production dates: 1998-present

AGM-1858B (JASSM-ER)

• Speed: Subsonic
• Range: >926 km (>575 mi)
• Propulsion: Williams International F107-WR-105 turbofan
• Production dates: 2010-present