In February 2014, work began on a multi-year upgrade of 62 B-1Bs, scheduled to be completed by 2019. The vertical situation display upgrade (VSDU) replaces existing flight instruments with multifunction color displays, a second display aids with threat evasion and targeting, and act as a back-up display. Additional memory capacity is to be installed for the diagnostics database. Procurement and installation of the IBS upgrades is expected to cost $918 million, research and engineering costs are estimated at $391 million. Other additions are to replace the two spinning mass gyroscopic inertial navigation system with ring laser gyroscopicsystems and a GPS antenna, replacement of the APQ-164 radar with the Scalable Agile Beam Radar – Global Strike (SABR-GS) active electronically scanned array, and a new attitude indicator.
____________________________________________
Crew: 4 (aircraft commander, copilot, offensive systems officer, and defensive systems officer)
Payload: 125,000 lb (56,700 kg) ; internal and external ordnance combined
Wingspan: Extended: 137 ft (42 m)
Wing area: 1,950 ft² (181.2 m²)
Empty weight: 192,000 lb (87,100 kg)
Loaded weight: 326,000 lb (148,000 kg)
Max. takeoff weight: 477,000 lb (216,400 kg)
Fuel capacity, optional: 10,000 U.S. gal (37,900 L) fuel tank each in 1–3 internal weapons bays
Powerplant: 4 × General Electric F101-GE-102 augmented turbofans
Dry thrust: 17,390 lbf (77.4 kN) each
Thrust with afterburner: 30,780 lbf (136.92 kN) each
____________________________________________
Maximum speed: At altitude: Mach 1.25 (830 mph, 720 kn, 1,340 km/h) at 40,000 ft (12,000 m) altitude. At low level: Mach 0.92 (700 mph, 610 kn, 1,100 km/h) at 200–500 ft (60–150 m) altitude
Range: 5,100 nmi (5,900 mi; 9,400 km)
Combat radius: 2,993 nmi (3,444 mi; 5,543 km)
Service ceiling: 60,000 ft (18,000 m)
Rate of climb: 5,678 ft/min (28.86 m/s)
Wing loading: 167 lb/ft² (816 kg/m²)
____________________________________________
Hardpoints: 6 external hardpoints for 50,000 pounds (23,000 kg) of ordnance (use for weapons restricted by arms treaties) and 3 internal bomb bays for 75,000 pounds (34,000 kg) of ordnance.
Bombs: 84× Mk-82 Air inflatable retarder (AIR) general purpose (GP) bombs
81× Mk-82 low drag general purpose (LDGP) bombs
84× Mk-62 Quickstrike sea mines
24× Mk-84 general purpose bombs
30× CBU-87/89/CBU-97 Cluster Bomb Units (CBU)
30× CBU-103/104/105 Wind Corrected Munitions Dispenser (WCMD) CBUs
24× GBU-31 JDAM GPS guided bombs (Mk-84 GP or BLU-109 warhead)
15× GBU-38 JDAM GPS guided bombs (Mk-82 GP warhead)
48× GBU-38 JDAM (using rotary launcher mounted multiple ejector racks)
48× GBU-54 LaserJDAM (using rotary launcher mounted multiple ejector racks)
96× or 144× GBU-39 Small Diameter Bomb GPS guided bombs (not fielded on B-1 yet)
24× AGM-154 Joint Standoff Weapon(JSOW)
24× AGM-158 Joint Air to Surface Standoff Missile (JASSM)
Up to 24× B61 or B83 nuclear bombs could be carried.
____________________________________________
1× AN/APQ-164 forward-looking offensive Passive electronically scanned array radar
1× AN/ALQ-161 radar warning receiver and defensive jamming equipment
1× AN/ASQ-184 defensive management system
1× Sniper Advanced Targeting Pod
____________________________________________
