mdiehl -> (6/18/2003 12:30:42 AM)
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B29 Specifications: [QUOTE] Dimensions: Wing Span 142' 3", Wing Area 1,736 Sq.Ft., Lenght 99', Max Height 27' 9" Weight: 70,140 Lbs. (empty) - 135,000 Lbs. gross with a 12,000 Lbs. payload Powerplant: 4x 2,200 Hp - 18-cylinder Wright R-3350 Cyclone with 8x GE B-11 Superchargers Range: 3,250 miles @ 25,000 ft. with a 5,000 lb. payload (4,100 with auxiliary tanks) Max Speed: 375 mph. @ 25,000 ft. Service Ceiling: 31.850 ft. Climb rate: 38 minutes to 25,000 ft. with full load Fuel load: 8,198 gallons, raised to 9,548 with auxiliary tanks fitted in the bomb bays Defensive armament: 10x .50-cal. remote-controlled machine guns, 1x 20mm. cannon (later removed) Bomb capacity: 5,000 lbs. over a 1,600-mile radius at high altitude, 12,000 lbs. at medium altitude Crew: 11 (pilot, co-pilot, bombardier, flight engineer, radio operator, navigator, 3 gunners in the Central Fire Control station, radar operator, tail gunner) [/QUOTE] And here are some comments on the teething problems: http://www.aviation-history.com/boeing/b29.html [QUOTE]Then there were problems with the huge, 161/2' Hamilton Standard propellers which caused "run-a-way" engines, problems with the 4 remote controlled gun "barbettes, problems with the "fire control blisters" where gunners were stationed to aim the barbettes; the blisters sometimes blew out when the craft was pressurized and flying at high altitude. (Gunners were advised to wear a safety line in order to avoid being blown overboard if a blister popped). There were problems with booster controls for the rudder and problems with the radar. [/QUOTE] These problems were worked out by late 1943. [QUOTE]It was armed with the General Electric auto-computing fire control system composed of eight remotely-controlled .50 caliber machine guns installed in 4 barbettes located on the top and bottom of the fuselage fore and aft. Later models added 2 more machine guns to the top forward barbette to assist in defending against frontal attacks. Control of the 4 barbettes could be transferred to a single gunner or shared between front, right, left and top gunners. The tail-gunner controlled two more .50s plus a 20mm cannon. It was estimated the tail gunner accounted for 75% of all enemy planes destroyed by the Superfortress. One reason for this was the 20mm cannon. Another was the slow closing rate of an enemy approaching from the rear which allowed more time for the tail gunner to sight on the intruder. [/QUOTE] The late war variants were VERY impressive. FLown from altitude it was unlikely taht any aircraft in the Japanese arsenal could catch one, much less shoot one down. Note the [B]400 mph[/B] airspeed at 30K feet: [QUOTE]Boeing B-29A Superfortress Dimensions: Wing span: 141 ft. 3 in (43.05 m) Length: 99 ft. 0 in (30.17 m) Height: 29 ft. 7 in (9.02 m) Wing Area: 1,736 sq ft (529.13 sq m) Weights: Empty: 72,208 lb (32,752 kg) Maximum Take-Off: 140,000 lb (63,502 kg) Performance: Maximum Speed: 399 m.p.h. (642 km/h) at 30,000 ft (9,144 m) Service Ceiling: 23,950 ft (7,299 m) Combat Ceiling: 36,150 ft (11,018 m) Normal Range: 4,200 miles (6,759 km) (with 18,000 lbs. (8,164 kg) bombs) Powerplant: Four Wright Aeronautical R-3350-57 Twin Row Radial 2,200 hp (1,640 kw) take-off, 2,500 hp (1,864) WE, Air Cooled Armament: Eight or twelve 50-cal. machine-guns. One 20mm cannon. Maximum bomb Load: 20,000 lbs. (9,0710 kg)[/QUOTE]
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