Temperature/Pressure of Some Engines

Engine:

Pegasus

J57

JT3D

JT8D

JT9D

F100-PW-100
Type:

Turbofan

Turbojet

Turbofan

Turbofan

Turbofan

Turbofan
Exhaust:

Separate

w/AB

Separate

Mixed

Separate

Mixed w/AB
Pt2 (psia)

14.7

14.7

14.7

14.7

14.7

13.1
Tt2 (F)

59

59

59

59

59

59
Pt2.5 (psia)

36.1

54

63

60

32.1

-
Tt2.5 (F)

242

330

360

355

210

-
Pt13 (psia)

36.5

-

26

28

22.6

39.3
Tt13(F)

257

-

170

190

130

297
Pt3 (psia)

216.9

167

200

233

316

316
Tt3 (F)

708

660

715

800

880

1,014
Pt4 (psia)

-

158

190

220

302

304
Tt4 (F)

1,028

1,570

1,600

1,720

1,970

2,566
Pt5 or Pt6 (psia)

29.3

36

-

-

20.9

38.0
Tt5 or Tt6 (F)

510

1,013

-

-

850

1,368
Pt16 (psia)

-

-

-

-

-

36.8
Tt16 (F)

-

-

-

-

-

303
Pt6A (psia)

-

-

-

29

-

37.5
Tt6A (F)

-

-

-

890

-

960
Pt7 (psia)

-

31.9

28

29

20.9

33.8
Tt7 (F)

-

2,540

890

890

850

3,204
Pt17 (psia)

36.5

-

26

-

22.4

-
Tt17 (F)

257

-

170

-

130

-
Bypass ratio a

1.4

0

1.36

1.1

5.0

0.69
Thrust (lb)

21,500

16,000

18,000

14,000

43,500

23,700
Airflow (lb/sec)

444

167

460

315

1,495

224

Sources: The Engine Handbook, Directorate of Propulsion, Headquarters Air Force Logistics Command, Wright-Patterson AFB, Ohio, 1991 and manufacturers’ literature