An original B&W video about Boeing B-29 Superfortress Flight Procedures.
The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Flying Fortress, the Superfortress was designed for high-altitude strategic bombing, but also excelled in low-altitude night incendiary bombing, and in dropping naval mines to blockade Japan. B-29s dropped the atomic bombs on Hiroshima and Nagasaki, the only aircraft ever to drop nuclear weapons in combat.
One of the largest aircraft of World War II, the B-29 was designed with state-of-the-art technology, which included a pressurized cabin, dual-wheeled tricycle landing gear, and an analog computer-controlled fire-control system that allowed one gunner and a fire-control officer to direct four remote machine gun turrets. The $3 billion cost of design and production (equivalent to $45 billion today), far exceeding the $1.9 billion cost of the Manhattan Project, made the B-29 program the most expensive of the war. The B-29 remained in service in various roles throughout the 1950s, being retired in the early 1960s after 3,970 had been built. A few were also used as flying television transmitters by the Stratovision company. The Royal Air Force flew the B-29 as the Washington until 1954.
The B-29 was the progenitor of a series of Boeing-built bombers, transports, tankers, reconnaissance aircraft, and trainers. For example, the re-engined B-50 Superfortress Lucky Lady II became the first aircraft to fly around the world non-stop, during a 94-hour flight in 1949. The Boeing C-97 Stratofreighter airlifter, which was first flown in 1944, was followed in 1947 by its commercial airliner variant, the Boeing Model 377 Stratocruiser. This bomber-to-airliner derivation was similar to the B-17/Model 307 evolution. In 1948, Boeing introduced the KB-29 tanker, followed in 1950 by the Model 377-derivative KC-97. A line of outsized-cargo variants of the Stratocruiser is the Guppy / Mini Guppy / Super Guppy, which remain in service with NASA and other operators. The Soviet Union produced 847 Tupolev Tu-4s, an unlicensed reverse-engineered copy of the B-29. Twenty B-29s remain as static displays, but only two, FIFI and Doc, still fly.
Before World War II, the United States Army Air Corps concluded that the Boeing B-17 Flying Fortress, which would be the Americans' primary strategic bomber during the war, would be inadequate for the Pacific Theater, which required a bomber that could carry a larger payload more than 3,000 miles.
The length of the 141-foot (43 m) wing span of a Boeing B-29 Superfortress based at Davis-Monthan Field is vividly illustrated here with the cloud-topped Santa Catalina Mountains as a contrasting background.
Two large olive-colored aircraft flying over farmland
YB-29 Superfortresses in flight
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%)
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)
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. (omitted from Silverplate B-29s)
2× .50 BMG and 1× 20 mm M2 cannon in tail position (the cannon was later removed)
Bombs:
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.
Mark I, Mark III, Mark 4, and Mark 6 nuclear bombs (only Silverplate versions of the aircraft).
#superfortress #b29 #aircraft
1 окт 2024
