Editing Rockwell B-1 Lancer (section)

===Upgrades===
[[File:A B-1B Lancer with a Sniper pod.jpeg|thumb|Nose of a B-1 showing the [[Sniper Advanced Targeting Pod|Sniper XR pod]] hanging below and triangular ride-control fins|alt=Sideview of a B-1B's nose section, which features a Sniper XR pod mounted on its chin]]

The B-1 has been upgraded since production, beginning with the "Conventional Mission Upgrade Program" (CMUP), which added a new [[MIL-STD-1760]] smart-weapons interface to enable the use of precision-guided conventional weapons. CMUP was delivered through a series of upgrades:
* Block A was the standard B-1B with the capability to deliver non-precision gravity bombs.
* Block B brought an improved Synthetic Aperture Radar, and upgrades to the Defensive Countermeasures System and was fielded in 1995.<ref>{{Cite web |title=Aerospaceweb.org {{!}} Aircraft Museum - B-1B Lancer |url=https://aerospaceweb.org/aircraft/bomber/b1/ |access-date=2024-05-13 |website=aerospaceweb.org}}</ref>
* Block C provided an "enhanced capability" for delivery of up to 30 cluster bomb units (CBUs) per [[sortie]] with modifications made to 50 bomb racks.<ref name="Skaarup p.19">{{harvnb|Skaarup|2002|p=19.}}</ref>
* Block D added a "Near Precision Capability" via improved weapons and targeting systems, and added advanced secure communications capabilities.<ref name="Skaarup p.19"/> The first part of the electronic countermeasures upgrade added [[Joint Direct Attack Munition]] (JDAM), ALE-50 towed decoy system, and anti-jam radios.<ref name="lee p.15"/><ref>[http://www.boeing.com/defense-space/military/b1-lancer/news/1998/news_release_981204n.htm "Boeing Completes Block E Avionics Upgrade of B-1 Bomber Fleet."] {{webarchive|url=https://web.archive.org/web/20070203172944/http://www.boeing.com/defense-space/military/b1-lancer/news/1998/news_release_981204n.htm |date=3 February 2007}} Boeing, 4 December 1998. Retrieved 8 October 2009.</ref><ref>Adams, Charlotte. [http://www.aviationtoday.com/av/issue/feature/Building-Blocks-to-Upgrade-to-B-1B_12802.html "Building Blocks to Upgrade to B-1B."] {{Webarchive|url=https://web.archive.org/web/20140429161249/http://www.aviationtoday.com/av/issue/feature/Building-Blocks-to-Upgrade-to-B-1B_12802.html |date=29 April 2014 }} ''Avionics Magazine'', 1 August 2002. Retrieved 24 June 2010.</ref>
* Block E upgraded the avionics computers and incorporated the [[Wind Corrected Munitions Dispenser]] (WCMD), the [[AGM-154 Joint Standoff Weapon]] (JSOW) and the [[AGM-158 JASSM]] (Joint Air to Surface Standoff Munition), substantially improving the bomber's capability. Upgrades were completed in September 2006.<ref>[http://www.boeing.com/defense-space/military/b1-lancer/news/2006/q3/060927d_nr.html "Boeing 2006 Block E Upgrades."] {{webarchive|url=https://web.archive.org/web/20071011155539/http://boeing.com/defense-space/military/b1-lancer/news/2006/q3/060927d_nr.html |date=11 October 2007}} Boeing, 27 September 2006. Retrieved 14 August 2010.</ref>
* Block F was the Defensive Systems Upgrade Program (DSUP) to improve the aircraft's electronic countermeasures and jamming capabilities, but it was canceled in December 2002 due to cost overruns and delays.<ref>[https://web.archive.org/web/20080408234341/http://www.b1b.wpafb.af.mil/pages/pdf/dsuptermination.pdf "Block F Upgrades."] ''US Air Force'', 21 January 2003. Retrieved 24 June 2010.</ref>

In 2007, the [[Sniper Advanced Targeting Pod|Sniper XR]] targeting pod was integrated on the B-1 fleet. The pod is mounted on an external hardpoint at the aircraft's chin near the forward bomb bay.<ref>Hernandez, Jason. [https://www.edwards.af.mil/News/Article/396421/419th-flts-demonstrates-sniper-pod-capability/ "419th FLTS demonstrates Sniper pod capability."] {{webarchive|url=https://web.archive.org/web/20090705235409/http://www.edwards.af.mil/news/story.asp?id=123042301 |date=5 July 2009}} ''US Air Force'', 23 February 2007.</ref> Following accelerated testing, the Sniper pod was fielded in summer 2008.<ref name=Sniper_combat/><ref>La Rue, Nori. [https://www.edwards.af.mil/News/Article/396056/b-1-sniper-pod-aims-to-hit-summer-target/ "B-1 Sniper pod aims to hit summer target."] {{webarchive|url=https://web.archive.org/web/20080608123406/http://www.edwards.af.mil/news/story.asp?id=123101089 |date=8 June 2008}} ''US Air Force'', 4 June 2008. Retrieved 8 October 2009.</ref> Future precision munitions include the [[Small Diameter Bomb]].<ref>{{cite web |author=Wicke, Russell. |url=https://www.af.mil/News/story/storyID/123028580/ |title= ACC declares small diameter bomb initially operational |publisher= United States Air Force |date= 5 October 2006 |access-date=28 September 2007 |url-status=live|archive-url=https://archive.today/20120802142216/http://www.af.mil/news/story.asp?storyID=123028580 |archive-date=2 August 2012}}</ref>

The USAF commenced the Integrated Battle Station (IBS) modification in 2012 as a combination of three separate upgrades when it realized the benefits of completing them concurrently; the Fully Integrated Data Link (FIDL), Vertical Situational Display Unit (VSDU) and Central Integrated Test System (CITS).<ref name=IBS>{{cite news |last=Mullan |first=Ron |date=24 September 2020 |title=B-1B Integrated Battle Station modification completed |trans-title= |url=https://www.tinker.af.mil/News/Article-Display/Article/2359795/b-1b-integrated-battle-station-modification-completed/ |work=tinker.af.mil |access-date=2021-01-29 |archive-date=3 February 2021 |archive-url=https://web.archive.org/web/20210203074627/https://www.tinker.af.mil/News/Article-Display/Article/2359795/b-1b-integrated-battle-station-modification-completed/ |url-status=live }}</ref> FIDL enables electronic data sharing, eliminating the need to enter information between systems by hand.<ref>Maull, Lisa and Forrest Gossett. [http://boeing.mediaroom.com/index.php?s=43&item=795 "Boeing B-1 Upgraded With Fully Integrated Data Link Completes 1st Flight."] {{Webarchive|url=https://web.archive.org/web/20110803102042/http://boeing.mediaroom.com/index.php?s=43&item=795 |date=3 August 2011 }} Boeing, 13 August 2009. Retrieved 8 October 2009.</ref> VSDU replaces existing flight instruments with multifunction color displays, a second display aids with threat evasion and targeting, and acts as a back-up display. CITS saw a new diagnostic system installed that allows crew to monitor over 9,000 parameters on the aircraft.<ref>{{cite web|url = https://www.aviationtoday.com/2020/10/08/transformed-for-the-21st-century-b-1b-lancer-completes-ibs-modification/|title = B-1B Systems Engineer Explains How IBS Makes Future Bomber Upgrades Easier|date = 8 October 2020|access-date = 29 January 2021|archive-date = 22 January 2021|archive-url = https://web.archive.org/web/20210122155249/https://www.aviationtoday.com/2020/10/08/transformed-for-the-21st-century-b-1b-lancer-completes-ibs-modification/|url-status = live}}</ref> Other additions are to replace the two spinning mass gyroscopic inertial navigation system with [[ring laser gyroscope|ring laser gyroscopic]] systems and a GPS antenna, replacement of the [[AN/APG-66|APQ-164 radar]] with the Scalable Agile Beam Radar – Global Strike ([[SABR-GS]]) [[active electronically scanned array]], and a new attitude indicator.<ref name="defensetech21feb14">{{usurped|1=[https://web.archive.org/web/20140221231712/http://defensetech.org/2014/02/21/air-force-begins-massive-b-1b-overhaul/ Air Force Begins Massive B-1B Overhaul]}} – Defensetech.org, 21 February 2014</ref> The IBS upgrades were completed in 2020.<ref name=IBS/>

In August 2019, the Air Force unveiled a modification to the B-1B to allow it to carry more weapons internally and externally. Using the moveable forward bulkhead, space in the intermediate bay was increased from 180 to 269&nbsp;in (457 to 683&nbsp;cm). Expanding the internal bay to make use of the Common Strategic Rotary Launcher (CSRL), as well as utilizing six of the eight external hardpoints that had been previously out of use to keep in line with the New START Treaty, would increase the B-1B's weapon load from 24 to 40. The configuration also enables it to carry heavier weapons in the 5,000&nbsp;lb (2,300&nbsp;kg) range, such as [[hypersonic]] missiles; the [[AGM-183 ARRW]] is planned for integration onto the bomber. In the future the [[Hypersonic Air-breathing Weapon Concept|HAWC]] could be used by the bomber which, combining both internal and external weapon carriage, could conceivably bring the total number of hypersonic weapons to 31.<ref>[https://newatlas.com/military/b-1b-bomber-modified-hypersonic-missiles/ B-1B bomber modified to carry hypersonic missiles] {{Webarchive|url=https://web.archive.org/web/20201029071827/https://newatlas.com/military/b-1b-bomber-modified-hypersonic-missiles/ |date=29 October 2020 }}. ''New Atlas''. 9 September 2019.</ref><ref>[https://www.defensenews.com/digital-show-dailies/air-force-association/2019/09/17/global-strike-head-makes-case-of-b-1-survival/ Hypersonic weapons could give the B-1 bomber a new lease on life] {{Webarchive|url=https://web.archive.org/web/20240208140044/https://www.defensenews.com/digital-show-dailies/air-force-association/2019/09/17/global-strike-head-makes-case-of-b-1-survival/ |date=8 February 2024 }}. ''[[Defense News]]''. 16 September 2019.</ref><ref>[https://www.airforcemag.com/afgsc-eyes-hypersonic-weapons-for-b-1-conventional-lrso/ AFGSC Eyes Hypersonic Weapons for B-1, Conventional LRSO] {{Webarchive|url=https://web.archive.org/web/20200809142000/https://www.airforcemag.com/afgsc-eyes-hypersonic-weapons-for-b-1-conventional-lrso/ |date=9 August 2020 }}. ''Air Force Magazine''. 7 April 2020.</ref>