6.7 A JT9D high-bypass-ratio turbofan engine at maximum static power on a sea-level, standard day ( P 0 ¼ 14.696 psia, T 0 ¼ 518.7 8 R, and V 0 ¼ 0) has the data listed in Appendix B. (a) .Assume g ¼ 1.4. (b) and high-pressure compressors. Assume g ¼ 1.4 for the low-pressure compressor and g ¼ 1.39 for the high-pressure compressor. (c) .Assume g ¼ 1.35. (d) Calculate the power (horsepower and kilowatts) into the fan and compressors. Assume Rg c

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed