An ideal ramjet engine is being designed for a mach 3.0 aircraft at an altitude of 33,000 ft. the fuel has a heating value of 18,600 btu/lbm and the burner exit total temperature is 3400°r. a thrust of 15,000 lbf is needed. what is the required airflow? what are the resulting nozzle exit and throat diameters? what is the resulting tsfc? for a fixed mach number, plot thrust and tsfc as a function of combustor exit temperature for ranges between the combustor inlet temperature and 4000°r.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.