
The Boeing B-29 Superfortress, first flown in 1942, began active service in 1944. It was designed as a replacement for the older B-17s and B-24s, having the longer range and greater bomb loads necessary for operations in the World War II Pacific theater. The B-29 was also used in the Korean War in the early 1950s and was a staple of the U.S. Air Force until the late 1950s. FIFI was acquired by the CAF in the early 1970s when a group of CAF members found her at the U.S. Navy Proving Ground at China Lake, California where she was being used as a missile target. The airplane was rescued and restored and flew for over thirty years until 2006 when the chief pilot made the decision to ground her pending a complete power plant re-fit. What followed was an extensive four year restoration that included replacing all four engines with new custom built hybrid engines. FIFI returned to the sky in 2010 and since that time has traveled coast to coast attracting large crowds at every tour stop. Learn more about FIFI at www.cafB29B24.org.
General characteristics
Crew: 11 (Pilot, co-pilot, bombardier, flight engineer, navigator, radio operator, radar observer, right gunner, left gunner, central fire control, tail gunner)
Length: 99 ft 0 in (30.18 m)
Wingspan: 141 ft 3 in (43.05 m)
Height: 27 ft 9 in (8.46 m)
Wing area: 1,736 sq ft (161.3 m2)
Aspect ratio: 11.5
Airfoil: root: Boeing 117 (22%); tip: Boeing 117 (9%)[103]
Zero-lift drag coefficient: 0.0241
Frontal area: 41.16 sq ft (3.824 m2)
Empty weight: 74,500 lb (33,793 kg)
Gross weight: 120,000 lb (54,431 kg)
Max takeoff weight: 133,500 lb (60,555 kg)
135,000 lb (61,000 kg) combat overload
Powerplant: 4 × Wright R-3350-23 Duplex-Cyclone 18-cylinder air-cooled turbosupercharged radial piston engines, 2,200 hp (1,600 kW) each
Propellers: 4-bladed constant-speed fully-feathering propellers, 16 ft 7 in (5.05 m) diameter
Performance
Maximum speed: 357 mph (575 km/h, 310 kn)
Cruise speed: 220 mph (350 km/h, 190 kn)
Stall speed: 105 mph (169 km/h, 91 kn)
Range: 3,250 mi (5,230 km, 2,820 nmi)
Ferry range: 5,600 mi (9,000 km, 4,900 nmi)
Service ceiling: 31,850 ft (9,710 m) [28]
Rate of climb: 900 ft/min (4.6 m/s)
Lift-to-drag: 16.8
Wing loading: 69.12 lb/sq ft (337.5 kg/m2)
Power/mass: 0.073 hp/lb (0.120 kW/kg)
Armament
Guns:
10 × .50 in (12.7 mm) Browning M2/ANs in remote-controlled turrets.[104] (omitted from Silverplate B-29s)
2 × .50 BMG and 1× 20 mm M2 cannon in tail position (the cannon was later removed)[k]
Bombs: [105]
5,000 lb (2,300 kg) over 1,600 mi (2,600 km; 1,400 nmi) radius at high altitude
12,000 lb (5,400 kg) over 1,600 mi (2,600 km; 1,400 nmi) radius at medium altitude
20,000 lb (9,100 kg) maximum over short distances at low altitude
Could be modified to carry two 22,000 lb (10,000 kg) Grand Slam bombs externally, or one 44,600 pound T-12 Cloudmaker deep penetration bomb.[105]
Mark I, Mark III, Mark 4 and Mark 6 nuclear bombs (only Silverplate versions of the aircraft).