AGM-158C LRASM
Specifications
| Designation | AGM-158C LRASM |
| Also Known As | Long Range Anti-Ship Missile |
| Type | Long-range, stealthy anti-ship missile |
| Manufacturer | Lockheed Martin |
| Operators | US Navy; US Air Force; Australia |
| Length | 4.27 m |
| Diameter | 0.356 m |
| Weight | 1134 kg |
| Wingspan | 3.2 m |
| Range | 900 km |
| Speed | High subsonic |
| Guidance | INS/GPS with passive RF seeker, imaging infrared terminal guidance, and AI-based target discrimination |
| Warhead | 450 kg penetrator blast fragmentation |
| Propulsion | Solid rocket booster, turbofan engine |
| First Tested | 2013 |
| First Deployed | 2019 |
| Unit Cost | $4,000,000 |
Overview
The AGM-158C Long Range Anti-Ship Missile (LRASM) is a next-generation anti-ship missile developed by Lockheed Martin for the US Navy and Air Force. Designed to replace the aging Harpoon missile, LRASM offers significantly enhanced range, survivability, and targeting capabilities. Its stealthy airframe and advanced autonomous targeting system, which utilizes artificial intelligence, allow it to penetrate sophisticated enemy defenses and engage high-value targets in contested maritime environments. LRASM is a critical component of the US military's strategy to maintain naval superiority in the face of growing threats from advanced adversaries. Its deployment marks a significant shift in naval warfare, emphasizing autonomous systems and long-range precision strike capabilities.
Development History
The LRASM program was initiated by the Defense Advanced Research Projects Agency (DARPA) in 2009 as a response to growing concerns about the vulnerability of existing anti-ship missiles to modern naval defenses. DARPA awarded contracts to Lockheed Martin and BAE Systems to develop competing LRASM designs. In 2013, Lockheed Martin's design was selected for further development and testing. The program benefited from earlier DARPA-funded research into autonomous targeting and electronic warfare. Extensive flight testing and integration with the F/A-18E/F Super Hornet and B-1B Lancer followed. LRASM achieved early operational capability with the US Navy in 2019 and with the US Air Force in 2018. Australia has also ordered LRASM to equip its F/A-18F Super Hornets.
Technical Deep Dive
LRASM employs a multi-mode guidance system. Initial navigation relies on INS/GPS, providing accurate positioning en route to the target area. Once in the target area, the missile switches to a passive radio frequency (RF) seeker, which detects and identifies enemy ships based on their electromagnetic emissions. The RF seeker is supplemented by an imaging infrared (IIR) seeker for terminal guidance, providing high-resolution imagery of the target for precise aimpoint selection. A key feature of LRASM is its AI-based autonomous targeting system. This system allows the missile to independently identify, classify, and prioritize targets without operator input. It can also navigate in GPS-denied environments, using onboard sensors and algorithms to maintain situational awareness. The missile's stealthy airframe reduces its radar cross-section, making it difficult to detect and intercept.
Combat Record
Tactical Role
LRASM is designed to strike high-value enemy warships at long ranges, significantly increasing the standoff distance for US Navy and Air Force strike platforms. It allows aircraft to engage targets from outside the range of many ship-based air defense systems. The missile's autonomous targeting capabilities are particularly valuable in complex and contested maritime environments, where communication links may be disrupted or jammed. LRASM can also be used to suppress enemy air defenses, creating a safer operating environment for other strike assets.
Strengths & Weaknesses
Variants
| Variant | Differences | Status |
|---|---|---|
| AGM-158C-2 | Extended range variant with improved fuel efficiency and potentially a larger warhead. | In Development |
| N/A | N/A | N/A |
Countermeasures
Potential countermeasures against LRASM include advanced radar systems capable of detecting stealthy targets, electronic warfare systems designed to jam or spoof the missile's guidance systems, and close-in weapon systems (CIWS) for intercepting incoming missiles. Hard-kill systems, such as surface-to-air missiles, can also be used to engage LRASM at longer ranges. Decoy systems, such as chaff and flares, can be deployed to confuse the missile's sensors. Ultimately, a layered defense approach, combining multiple countermeasures, is necessary to effectively counter the threat posed by LRASM.
Frequently Asked Questions
What is LRASM and what does it stand for?
LRASM stands for Long Range Anti-Ship Missile. It's a stealthy, precision-guided missile designed to strike high-value naval targets from long distances, even in GPS-denied environments.
How far can the LRASM missile travel?
The LRASM has a range of approximately 900 kilometers (560 miles). This long range allows launch platforms to engage targets from a safe standoff distance, reducing their vulnerability.
What platforms can launch the LRASM?
Currently, the LRASM is operational on the US Navy's F/A-18E/F Super Hornet and the US Air Force's B-1B Lancer bomber. Australia plans to integrate it onto their F/A-18F Super Hornets as well.
How does LRASM find its targets?
LRASM uses a combination of INS/GPS for initial navigation, a passive RF seeker to detect enemy ships, and an imaging infrared seeker for terminal guidance. Its AI-based targeting system allows it to autonomously identify and prioritize targets.
Is LRASM actually used in combat?
While LRASM has been extensively tested and integrated into military exercises, there are no confirmed reports of it being used in actual combat situations as of now. Its effectiveness is based on simulations and live-fire testing.