Unbroken

Laura Hillenbrand 2010

Beaverton Lib 940.5472 HIL

Aircraft

https://en.wikipedia.org/wiki/Consolidated_B-24_Liberator

B-17

Production

18,188

12,731

Crew

11

10

Length

67 ft 2 in

74 ft 4 in

Wingspan

110 ft

103 ft 9 in

Height

17 ft 7.5 in

19 ft 1 in

Wing area

1,048 sq ft

1,420 sq ft

Aspect ratio

11.55

7.57

Zero-lift drag coefficient CD

CD 0.0406

Frontal area

42.54 sq ft

Airfoil: root

Davis (22%)

Airfoil: NACA 0018

tip

Davis (9.3%)

Empty weight

36,500 lb

36,135 lb

Gross weight

55,000 lb

54,000 lb

Max takeoff weight

65,000 lb plus

65,500 lb

Fuel capacity normal

2,344 US gal

long-range tanks in bomb bay

3,614 US gal

Oil capacity

131.6 US gal

Powerplant

4 × 1,200 hp

4 × 1,200 hp

Propellers diameter

3-bladed 11 ft 7 in

3-bladed

Performance

Maximum speed

297 mph at 25,000 ft

287 mph

Cruise speed

215 mph

182 mph

Stall speed

95 mph

Range: 1,540 mi

1,340 nmi at 237 mph

2,000 mi w/

normal fuel,maximum internal bomb load

with 6000lb bombload

Ferry range

3,700 mi

3,750 mi

Service ceiling

28,000 ft

35,600 ft

Rate of climb

1,025 ft/min

900 ft/min

Time to altitude

20,000 ft in 25 minutes

Lift-to-drag

12.9

Wing loading

52.5 lb/sq ft

38.0 lb/sq ft

Power/mass

0.0873 hp/lb

0.089 hp/lb

Armament

Guns

10 × .50 caliber M2

13 × .50 in M2

Browning machine guns

Browning machine guns

Bombs:

Short range

400 mi : 8,000 pounds

400 mi : 8,000 lb

Long range

800 mi : 5,000 pounds

800 mi : 4,500 lb

Very long range

1,200 mi : 2,700 pounds