Calculate mcore and mfuel in lbm/s. Show step.
Farokhi problem 3.4
JT9D Turbofan Internal pressures and temperatures JT9D powers many commercial aircraft including Boeing 747s.
Static @ 9 P (psia) 14.7 22.6 32.1 22.4 302 20.9 59* 130* 210 880* 1970* 850* T(F) V1190 Pais ft/6 AI ses level static takeoff thrust of 43500bs, W=1248 b/s, W.-247 bs/s
described by its fan and core engine gas flow properties JT9D 747, A310, 767 Conversioni Cost K-F 255.37 g(ft/s2) 32.175|ft->m 0.3048|BTU->J 1,055|BTU/lbm->ft2/s2 25,038 lb->kg 0.45359 lbft->kgm 0.1383 psi->Pa 6,895|Conv TSFC 115,830 Dati Si QR(BTU/lbm) 18,600|QR(ft2/s2)|465,707,434|QR(kJ/kg) 43266|cp3(BTU/lbmR) 0.24| SI cp4(BTU/lbmR) 0.26 m13(lbm/s) 1,248 m13(lbm/s) 1,248|m2(kg/s) 566.08|R3(ft2/s2R) 1,717 m3(lbm/s) 247|mf(lbm/s) 247|m3(kg/s) 112.037|R4(ft2/s2R] 1,716 Fn(lbf) 43,500Fn(lb ft/s2) 1,399,613Fn(N) 193,502 gamma3 1.400 V9(ft/s) 1,190 V9(m/s) 363k 0.286 V19(ft/s) 885| V19(m/s) 270|gamma4 1.358 k 0.264 Stazioni pt(psi) T(F) T(R) pt(kN) T(K) Si 2 14.7 59| 518.7 101.4 288.1|cp(J/kgK) 1,005| 13 22.6 130 589.7 155.8 327.6|cp(J/kgK) 1,089 2.5| 32 210 669.7 221.3 372.0|R(J/kgK) 287| 316 880 1,339.7 2,178.8 744.3R(J/kgK) 287| 4 302.0 1,970 2,429.7 2,082.3 1,349.8 5 20.9 850 1,309.7 144.1 727.6 9| 14.7[ 850| 1,309.7 101| 727.6| 19 22.4| 130 589.7 154 327.6|