JASSM is a joint USAF-Navy autonomous, precision cruise missile for use against heavily defended or high-value targets at standoff range.

It can attack fixed, relocatable, and moderately hardened/buried targets. The base-variant is a stealthy, low-cost airframe equipped with GPS/INS guidance and imaging IR terminal seeker.

The JASSM-Extended Range (JASSM-ER) version uses the same baseline body, but a new engine and fuel system that increases range to more than 500 miles. The ER was cleared for combat use on the B-1B in 2015, reached full operational capability on the F-15E in 2018, and planned for use on all fighter/bomber platforms. Full-rate production began in 2018, and production shifted to ER-only in FY16. Total planned production includes 2,034 JASSMs and 2,866 JASSM-ERs.

Further development has resulted in the “extreme range” JASSM-XR, which is slated for future production. Lockheed Martin is also developing the Long-Range Anti-Ship Missile (LRASM) which reached early operational capability on the B-1B in December 2018, and is planned for additional fielding on the B-52.

The service is considering upping total procurement to as many as 10,000 JASSMs and 400 LRSAMs. FY21 funds support procurement of five LRASM and 400 JASSM-ER including initial procurement of 40 extreme-range variants deferred from FY20.

USAF conducted a proof of concept employing palletized JASSM deployed from the ramp of a C-17 and MC-130 in September 2020, aimed at using mobility platforms for massed, stand-off attack.

Contractors: Lockheed Martin; Raytheon; Honeywell.
First Flight: April 8, 1999.
Delivered: 2001-present.
IOC: September 2003; December 2014 (ER variant); 2018 (LRASM).
Production: 7,200 JASSM (planned); 50 LRASM (planned).
Active Variants: •AGM-158A JASSM. Base-variant. •AGM-158B JASSM-ER. Extended-range variant. •AGM-158C LRASM. Long-Range Anti-Ship Missile, based on JASSM. •AGM-158D JASSM-XR. Future extreme-range variant of JASSM-ER.
Dimensions: Length 14 ft.
Power Plant: Teledyne Technologies J402 turbojet (JASSM); Williams Intl. F107-WR-105 turbofan (JASSM-ER).
Performance: Speed subsonic, range 200+ miles (baseline), 500+ miles (ER), approx. 1000 miles (XR).
Guidance: GPS/INS and imaging IR terminal seeker.
Warhead: 1,000-lb class penetrator (JASSM); 1,000-lb blast fragmentation (LRASM).
Integration: B-1B, B-2, B-52H, F-15E, and F-16 Block 40-52; planned: F35A (JASSM). B-1B, B-2A, B-52H, F-15E F-16; planned: F-35A (JASSM-ER B1B; planned: B-52 (LRASM).

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