21. The HeS 30 concept also had better specific fuel consumption and was also smaller in cross-section. 22. The engine features a high overall pressure ratio, yielding a low specific fuel consumption for its time. 23. Together the improvements provided a 1.2 % improvement to the Trent 700's specific fuel consumption . 24. This definition is called specific fuel consumption , or how much fuel is needed to produce one unit of thrust. 25. Recovery turbines increase the output of the engine without increasing its fuel consumption, thus reducing the specific fuel consumption . 26. The engine was to weigh 180 lb, and the thrust specific fuel consumption was to be 1.7. 27. However, the specific fuel consumption ( fuel flow / net thrust ) is unaffected, assuming scale effects are neglected. 28. Some figures such as Specific Fuel Consumption are addressed to engineers and other studious buyers whom the sellers dare not mislead. 29. In addition, the General Electric engines had a higher specific fuel consumption than the Boeing's Pratt & Whitney JT3Cs. 30. The TR-1 was not a success, proving to have less thrust and a higher specific fuel consumption than designed.
