16885J/ESD35J-oct1,2002 Thrust Specific Fuel Consumption(tsfc) Definition: TSFC= lb of fuel burned (b of thrust delivered)( hour) Measure of jet engine effectiveness at converting fuel to useable thrust Includes installation effects such as bleed air for cabin, electric generator, etc Inlet effects can be included(organizational dependent) pendent ypical numbers are in range of 0. 3 to 0.9. Can be up to 1.5 Terminology varies with time units used, and it is not all consistent TSFC uses hours "c is often used for tsfc lb of fuel burned Another term used is C (b of thrust delivered)(sec)16.885J/ESD.35J - Oct 1, 2002 Thrust Specific Fuel Consumption (TSFC) • Definition: • Measure of jet engine effectiveness at converting fuel to useable thrust • Includes installation effects such as – bleed air for cabin, electric generator, etc.. – Inlet effects can be included (organizational dependent) • Typical numbers are in range of 0.3 to 0.9. Can be up to 1.5 • Terminology varies with time units used, and it is not all consistent. – TSFC uses hours – “c” is often used for TSFC – Another term used is TSFC lb of fuel burned (lb of thrust delivered)(hour) ct lb of fuel burned (lb of thrust delivered)(sec)