Thrust-specific fuel consumption
Typical values of SFC for thrust engines
The following table gives the efficiency for several engines when running at 80% throttle, which is approximately what is used in cruising, giving a minimum SFC.

Thrust-specific fuel consumption

Section Title: Typical values of SFC for thrust engines
Table Section Text: The following table gives the efficiency for several engines when running at 80% throttle, which is approximately what is used in cruising, giving a minimum SFC.

Engine type	Scenario	Spec. fuel cons.	Specific impulse (s)	Effective exhaust velocity (m/s)

(lb/lbf·h)	(g/kN·s)

NK-33 rocket engine	Vacuum	10.9	308	331	3250

SSME rocket engine	Space shuttle vacuum	7.95	225	453	4440

Ramjet[verification needed]	Mach 1	4.5	130	800	7800

J-58 turbojet	SR-71 at Mach 3.2 (Wet)	1.9	54	1900	19000

Eurojet EJ200	Reheat	1.66–1.73	47–49	2080–2170	20400–21300

Rolls-Royce/Snecma Olympus 593 turbojet	Concorde Mach 2 cruise (Dry)	1.195	33.8	3010	29500

Eurojet EJ200	Dry	0.74–0.81	21–23	4400–4900	44000–48000

CF6-80C2B1F turbofan	Boeing 747-400 cruise	0.605	17.1	5950	58400

General Electric CF6 turbofan	Sea level	0.307	8.7	11700	115000

Sentence(s)

Olympus 593 was used in the Concorde.

final_sentence: Olympus 593 was used in the Concorde.