jet engine 

Statements about this table:
the ssme rocket engine be use in a space shuttle vacuum scenario
the maximum specific impulse in the space shuttle vacuum scenario be 453 second with an effective exhaust velocity of 4423 m / s
the ssme rocket engine be use in a vacuum scenario
the maximum specific impulse be 300 witha 4423 m / s effective exhaust velocity
when the specific impulse be 453 , the sfc be greater than 225
engine type
scenario
sfc in lb / (lbf h)
sfc in g / (kn s)
nk - 33 rocket engine
vacuum
10.9
309
ssme rocket engine
space shuttle vacuum
7.95
225
ramjet
mach 1
4.5
127
j - 58 turbojet
sr - 71 at mach 3.2 (wet)
1.9
53.8
rolls - royce / snecma olympus 593
concorde mach 2 cruise (dry)
1.195
33.8
cf6 - 80c2b1f turbofan
boeing 747 - 400 cruise
0.605
17.1
engine type
specific impulse (s)
effective exhaust velocity (m / s)
nk - 33 rocket engine
331
3240
ssme rocket engine
453
4423
ramjet
800
7877
j - 58 turbojet
1900
18587
rolls - royce / snecma olympus 593
3012
29553
cf6 - 80c2b1f turbofan
5950
58400