Table:
text: Thrust specific fuel consumption
Typical values of SFC for thrust engines
Specific fuel consumption (SFC), specific impulse, and effective exhaust velocity numbers for various rocket and jet engines.
Engine_type Scenario SFC_in_lb_lbf_h SFC_in_g_kN_s Specific_impulse_s Effective_exhaust_velocity_m_s
NK-33 rocket engine Vacuum 10.9 309 331 3240
SSME rocket engine Space shuttle vacuum 7.95 225 453 4423
Ramjet Mach 1 4.5 127 800 7877
J-58 turbojet SR-71 at Mach 3.2 (Wet) 1.9 53.8 1900 18587
Rolls-Royce/Snecma Olympus 593 Concorde Mach 2 cruise (Dry) 1.195 33.8 3012 29553
CF6-80C2B1F turbofan Boeing 747-400 cruise 0.605 17.1 5950 58400
General Electric CF6 turbofan Sea level 0.307 8.696 11700 115000

Question: What is the average SFC in lb/(lbf h) for engines with an effective exhaust gas velocity (m/s) greater than 29,553 and an SFC in g/(kN s) of 17.1 in thrust specific fuel consumption?

Question: What is the specific impulse for the engine with a scenario of sr-71 at mach 3.2 (wet) in the specific fuel consumption of the thrust?

Question: What is the average specific impulse for engines with an SFC in lb/(lbf h) of 7.95 and an effective exhaust gas velocity (m/s) greater than 4,423 for thrust specific fuel consumption?