Table: jet engine
[['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']]
Statement: the Nk - 33 Rocket Engine had the largest Specific fuel consumption with 10.9 pound
Statement: 43% of the Engine listed had Effective Exhaust Velocity of less than 10000 m / s
Statement: the Ramjet Engine had a larger Specific fuel consumption than the General Electric Cf6 Turbofan
Statement: the Ssme Rocket Engine did not have the largest Effective Exhaust Velocity
Statement: the Nk - 33 and Ssme Rocket Engine were the only referenced Engine that were tested in a Vacuum