| Selected
by Boeing to power the 747, the JT9D helped open a new era in
commercial aviation, the high-bypass engine to power wide-body
aircraft.
Production of the JT9D ended in 1990 to be
replaced by the PW4000. There are still well over 2,000 JT9Ds
powering 600 commercial aircraft world-wide. |
|
 | Turbofan |
| Fan: 1-stage |
| Compressor: 3-stage LP, 11-stage HP |
| Turbine: 2 + 4 |
| bypass ratio: 4.8 |
| pressure ratio: 26.7 |
| mass flow: 1,510 lbs/sec |
|
