JT9D-7R4H1

Engine model
Manufacturer Pratt & Whitney
Engine type Turbofan

Technical specifications

Design
Fan stages
1
HP compressor stages
11
HP turbine stages
2
LP compressor stages
4
LP turbine stages
4
Dimensions
Fan diameter
2.37 m
7.78 ft
Length
3.92 m
12.86 ft
Performance
Bypass ratio
4.8:1
Pressure ratio
26.7:1
Thrust limits
Max. continuous thrust
222.4 kN
50,000 lbf
Max. takeoff thrust
249.1 kN
56,000 lbf
Weights
Dry weight
4,044 kg
8,915 lb

Aircraft models

Manufacturer Name Aircraft family
Airbus A300 B4-620 Airplane
Airbus A300 C4-620 Airplane