AGM-158D JASSM-D / JASSM-XR “Extreme Range”
The Joint Air-to-Surface Standoff Missile (JASSM) is an ACAT 1C program. This program provides a long range, conventional air-to-surface, autonomous, precision guided, standoff cruise missile compatiblewith fighter and bomber aircraft able to attack a variety of fixed or relocatable targets. Although the 500nm range of the AGM-158 fell far short of the AGM-86C Conventional Air-Launched Cruise Missile [CALCM], the Air Force retired the CALCM from service in November 2019 with no direct replacement.
The AGM-158D JASSM-XR "extreme range" variant is expected to be able to engage targets over 1,000 miles away. This will allow operations in the Russian Arctic and part of Siberia, since the delivery vehicles will not have to approach the borders of Russia or enter the affected area of the S-400 Triumph air defense system.
The JASSM Family of missiles includes: JASSM Baseline (JASSM-BL/AGM-158A) and JASSM Extended Range (JASSM-ER/AGM-158B), and AGM-158D. Aircraft integration for JASSM-BL is complete on the B-52H, F-16 (Block 40-52), B-1, B-2, and F-15E. Aircraft integration for JASSM-ER is complete on the B-1, F-15 and B-52.Objective aircraft are the B-52, F16, B-2 and F-15.
JASSM Lots 1 - 10 are covered under an Original Equipment Manufacture (OEM) warranty; 15 years for JASSM-ER and 20 years for JASSM-BL. Lots 11 andbeyond are covered under a Contractor Logistics Support (CLS) contract and missile initial/replenishment spares program funds are required to fill the initial spare parts pipeline under this program. Procurement quantities are estimates only and fall within a range of quantities based on negotiations for each specific lot contract. Total procurement of 7,200 includes JASSM-BL (AGM-158A), JASSM-ER (AGM-158B), andAGM-158D which provides a capability upgrade. FY20 procurement includes AGM-158D.
JASSM spawned a number of variants. Key among these are the longer-range AGM-158B JASSM-ER (Extended Range) which is currently in production and in service as the AGM-158A replacement, as well as the AGM-158C LRASM which is an anti-ship variant. Latest is a further refined version, initially called JASSM-XR (for Extreme Range) with a number of improvements. Key among these is a range increase from 500 to 1,000 nautical miles compared to the AGM-158B (925 km to 1,850 km). The JASSM-XR received an official AGM-158D designation earlier, and production has been confirmed to start with Lot 19. Starting in 2021 with lot 19 JASSM production will include five AGM-158D JASSM-XRs per month. The first JASSM AGM-158D missiles will deliver in FY23.
JASSM's Acquisition Strategy was amended to enable the JASSM program to introduce upgrades to ensure its viability as the threat environment evolves. The upgrade resulted in a nomenclature change (AGM-158D) to differentiate the enhanced capabilities of the upgraded system versus the legacy JASSM-ER (AGM-158B). The Development Integrated Product Team (IPT) accomplished new wing full scale wind tunnel test in October 2018. Wind tunnel results closely matched predictions and JASSM range will be significantly increased. Wing Engineering and Manufacturing Development (EMD) contract awarded 31 January 2019. ESAF (Electronic Safe and Arm Fuze) development was delayed due to an obsolete thyristor part that OSD's Priority Allocation of Industrial Resources (PAIR) diverted away from JASSM.
The Program Office continued development of AGM-158D (also known as JASSM-D) to respond to rapidly changing threats. The AGM-158D includes new wings, an Electronic Safe and Arm Fuze (ESAF), M-code compatible Global Positioning System (GPS) receiver (JASSM Anti-Jam GPS Receiver with Selective Availability-Anti-Spoofing Module (SAASM) Version 4 (JAGR-S V4)), intelligent test instrumentation kit (iTiK), and upgraded missile control unit to create a more capable weapon system with longer range. The Program Office awarded Phase 3 of the Engineering and Manufacturing Development contract for the new wing design in January 2019. The Wing Preliminary Design Review was completed in December 2019.
Although ESAF development was delayed due to an obsolete thyristor part, a redesign with a new part is complete, and the ESAF is scheduled to return to testing in early 2020. Due to software delays from the Military GPS Users Equipment (MGUE) program, the JASSM Program Office adjusted plans for the AGM-158D M-code GPS receiver and awarded the JAGR-S V4 EMD contract to continue development of a SAASM based receiver that shares 80% commonality with the future JASSM M-Code receiver. This approach enables continued development of the AGM-158D M-Code receiver while allowing the JASSM program to continue producing and fielding missiles with operational GPS receivers.
Total JASSM Procurement Cost (December 2019) estimates reflect increased production from 4,900 to 7200 missiles. Production costs are sensitive to forecasted lot quantities and AGM-158D requirements. Program Deviation Report signed by SAF/AQ on February 13, 12019, deferring APB update for increased quantities and AGM-158D requirements to 2022.
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