NASA NTRS · 19780019110
Energy efficient engine: Preliminary design and integration studies
Abstract
A mixed exhaust, direct drive fan turbofan configuration was selected from four candidates. This choice was based on its ability to exceed study goals of 12% lower thrust specific fuel consumption and 5% lower direct operating cost by the 1990's with commercially acceptable technical risk and relative mechanical simplicity. The evaluation leading to configuration selection is discussed. Necessary technology advancements are identified and related to the goals.
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Gray, D. E.. 1978-06-01. Energy efficient engine: Preliminary design and integration studies. https://ntrs.nasa.gov/citations/19780019110
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