AMSA b-1a bomber

AMSA, Advanced Manned Strategic Aircraft, was the program that led to
the B-1 bomber. Following on the heels of the cancelled B-70 program,
AMSA stretched on for (at the time) a long stretch of years, and chewed
through (for the time) a vast supply of cash. The requirements were in a
constant state of flux… one day the bomber was to be capable of Mach 3;
the next it was to be cheap and subsonic.
Below is a photo of a range of the designs studied by North American
Aviation, who eventually got to build the B-1. The configurations are as
varied as the requirements.

Crew: 6 (aircraft commander, copilot, offensive systems officer and defensive systems officer)Payload: 125,000 lb (56,700 kg) ; internal and external ordnance combinedLength: 146 ft (44.5 m)Wingspan:
Extended: 124 ft (41.8 m)Swept: 53 ft (24.1 m)
Height: 29 ft (10.4 m)Wing area: 1,950 ft² (181.2 m&sup2Airfoil: NA69-190-2Empty weight: 192,000 lb (87,100 kg)Loaded weight: 326,000 lb (148,000 kg)Max. takeoff weight: 477,000 lb (216,400 kg)Powerplant: 2 × General Electric F101-GE-102 augmented turbofans
Dry thrust: 14,600 lbf (64.9 kN) eachThrust with afterburner: 30,780 lbf (136.92 kN) each
Fuel capacity, optional: 10,000 U.S. gal (38,000 L) fuel tank for 1–3 internal weapons bays each
Performance
Maximum speed:

At altitude: Mach 1.25 (721 knots, 830 mph, 1,340 km/h at 50,000 ft/15,000 m altitude)At low level: Mach 0.92 (700 mph, 1,130 km/h at 200–500 ft/60-150 m altitude)
Range: 6,478 nmi (7,456 mi, 11,998 km)Combat radius: 2,993 nmi (3,445 mi, 5,543 km)Service ceiling: 60,000 ft (18,000 m)Wing loading: 167 lb/ft² (816 kg/m&sup2Thrust/weight: 0.38
Armament

Hardpoints: six external hardpoints for 50,000 lb (22,700 kg) of ordnance (use for weapons currently restricted by START I treaty[94]) and three internal bomb bays for 75,000 lb (34,000 kg) of ordnance.Bombs:

84× Mk-82 Air inflatable retarder (AIR) general purpose (GP) bombs[161]81× Mk-82 low drag general purpose (LDGP) bombs[162]84× Mk-62 Quickstrike sea mines[163]24× Mk-65 naval mines[164]30× CBU-87/89/CBU-97 Cluster Bomb Units (CBU)[N 2]30× CBU-103/104/105 Wind Corrected Munitions Dispenser (WCMD) CBUs24× GBU-31 JDAM GPS guided bombs (Mk-84 GP or BLU-109 warhead)[N 3]15× GBU-38 JDAM GPS guided bombs (Mk-82 GP warhead)[N 4]48x GBU-38 JDAM (using rotary launcher mounted multiple ejector racks)[165]48x GBU-54 LaserJDAM (using rotary launcher mounted multiple ejector racks)[165]24× Mk-84 general purpose bombs12× AGM-154 Joint Standoff Weapon (JSOW)96× or 144× GBU-39 Small Diameter Bomb GPS guided bombs[N 5] (not fielded on B-1 yet)24× AGM-158 Joint Air to Surface Standoff Munitions (JASSM)24× B61 nuclear variable-yield gravity bombs (no longer carried)[164]24x B83 nuclear gravity bombs (no longer carried)[164]

Avionics

1× AN/APQ-164 forward-looking offensive passive phased-array radar1× AN/ALQ-161 radar warning and defensive jamming equipment1× AN/ASQ-184 defensive management system1× Lockheed Martin Sniper XR targeting pod (optional)