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United States' Boeing B-17F Flying Fortress

Photos

  • Boeing B-17F Flying Fortress
  • Boeing B-17F Flying Fortress
  • Boeing B-17F Flying Fortress

Design

The B-17F had a single piece nose installed.1,3

Propellers were slightly larger.1 Engine cowling was reshaped.1 Oil tanks were self sealing.1 Wings and undercarriage strengthened to allow for larger bomb loads.1 Link between Norden bombsight and autopilot installed.1 "Tokyo tank" were installed in outer wings to allow for an additional 1,000 mile / 1,610 km range.1 Could carry 1,000 lb / 454 kg of bombs under wings.1 Late in production Bendix chin turret added.1

Prototype

First flew in May 1942.1

Variants

  • Boeing B-17F / Fortress II:

Specifications

  Boeing B-17F Flying Fortress1,2
Type Medium / heavy bomber.1
Crew 101
Engine (Type) 4: Wright R-1820-97 Cyclone1
4: Wright Cyclone4
Cylinders Radial 91
HP 1,2004, 1,200 each takeoff1
1,380 each war emergency1
Propeller blades 3 each1
Dimensions  
Span 103'4, 103' 9"1
31.62 m1
Length 73'4, 74' 9"1
22.78 m1
Height 15' 6"4, 19' 2"1
5.84 m1
Weight  
Empty 34,000 lb1
15,422 kg1
Maximum load 65,500 lb1
29,711 kg1
Performance  
Speed >300 mph4
Speed @ 25,000' /
7,620 m
War emergency: 314 mph1
505 kph1
Normal: 300 mph1
482 kph1
Cruising speed 200 mph1
322 kph1
Service ceiling 37,500'1
11,430 m1
Range with 4,000 lb /
1,815 kg bomb load
2,200 miles1
3,540 km1
Range with 6,000 lb /
2,722 kg bomb load
1,300 miles1
2,092 km1
Maximum range 2,680 miles1
4,313 km1
Armament 10 - 12: 0.5' MG1
Bombs 4,000 lb1
1,815 kg1
Bombs - maximum 8,000 lb1
3,629 kg1

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  3. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
  4. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
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