gearbox turbofan

gearbox turbofan - Gas Power Cycle - Jet Propulsion...

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Gas Power Cycle - Jet Propulsion Technology, A Case Study
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Ideal Brayton Cycle Air Fuel Products Compressor Turbine Combustor 1 2 3 4 P v T s 1 2 3 4 1 2 3 4 • 1-2 Isentropic compression • 2-3 Constant pressure heat addition • 3-4 Isentropic expansion • 4-1 Constant pressure heat rejection
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Ideal Brayton Cycle - 2 () 41 th 32 14 1 2 3 2 The thermal efficiency of the ideal Brayton cycle is 11 (/ 1 ) 1 1 equation (1) ( / 1 ) Processes 1-2 and 3-4 are isen net out in in out out in in in in p p hh ww w q q q qq q q h h cT T TT T T T TT η −− == = = = =− (1 ) / ) / 33 22 44 3 1 23 34 th ) / ( 2 1 tropic (adiabatic), therefore , Also, P and P , therefore and Equation (1) becomes 1 1 1 1 kk k p TP and T T PP r P P    = = =− =− =− 1)/ 2 p 1 where r is the pressure ratio of the compressor and the turbine k P P =
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Jet Propulsion Cycle 1 2 3 4 5 6 P=constant P=constant q out q in • 1-2, inlet flow decelerates in the diffuser; pressure and temperature increase • 5-6, outlet flow accelerates in the nozzle section, pressure and temperature decrease T s
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This note was uploaded on 11/27/2011 for the course EML 3002c taught by Professor Staff during the Fall '08 term at FSU.

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gearbox turbofan - Gas Power Cycle - Jet Propulsion...

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