SAWE Report - Cal Poly San Luis Obispo

The weight of the F119 was decreased down to 5,270 lbs (2,384 kg) to account for the additional
10% increase in thrust to weight. However there is no evidence of any other advancements with
the IHPTET program, and advancements in turbofan engines were sought out. The Versatile
Affordable Advanced Turbofan Engine (VAATE) is an industry projection to 2020. Even though
it builds upon IHPTET it uses the F119 as a base engine for its future goals. Figure 6.1 illustrates
the goals for turbofan engines thru 2020 and Phase I goals of a 25% decrease in TSFC and a 45%
decrease in cost by 2010. It is likely that this program will face similar problems in achieving its
goal by 2010, in which case a decrease of 13% in TSFC was taken and an estimated 25%
decrease in cost over the F119. The 13% change in TSFC was achieved by increasing the thrust
by 11% and decrease the fuel flow 2%. The new VAATE technology engine has a sea level
thrust of 30,000 lbs (133,500 N) and a cruise TSFC of 0.82 1/hr (0.084 kg/hr/N), however once
inlet and ducting losses are accounted for the cruise TSFC is 0.92. 1/hr (0.094 kg/hr/N).
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