You are designing an antenna to be suspended from a helicopter. the diameter of the antenna is 12 inches. the maximum speed of the helicopter is 200ft/s. what must the design goal natural frequency of the antenna be if the design goal natural frequency is to twice that of the vortex shedding frequency? for units of frequency use radians s be ec. assume a strouhal number of 1.257

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature