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A hypersonic gun tunnel is used to generate short-duration, high-speed flows and typically consists of two cylindrical volumes separated by a diaphragm. One end of the tunnel (the driver end) is pumped to a high pressure, while the other end (the driven end) is evacuated to a low pressure. At a set pressure difference the diaphragm ruptures producing a high speed flow of gas that can be used to test a model at supersonic speeds. For a driver end of volume 0.781m3 containing nitrogen at 300 bar, 27°C, and an evacuated driven end of volume 11.9m3, determine the following. Assume that the tunnel operates adiabatically. a) The total mass of the gas, in kg, present in the system. b) The final temperature, in K, and the final pressure, in bar, of the gas after the diaphragm breaks and the system reaches equilibrium.
Air is contained in a piston-cylinder assembly, initially at 40 lbf/in^2 and 600R. The air expands in a polytropic process with n=k=1.4 until the volume is doubled. Modeling the air as an ideal gas with constant specific heats,
the piston diameter is 20.0 cm and the pumps stroke is 22.0cm. the pump is attached to an electric motor that is
A meteorologist uses a pitot -static tube to measure the wind speed in a tornado. Based on the damage caused by the storm, the tornado is rated as EF5 on the enhanced Fujita Scale. This means that the wind speed is estimated to be in the range of 261..
the system is released from rest with no slack in the cable and with the spring unstretched. determine the distanced s
a propeller driveshaft is to transmit 2500 hp at 75 rpm. it is to be made of aisi 1040 wqt 1300 steel. use a design
if the volume of a bucketful of water is described by the normal distribution with a mean of 2.7 gallons and a standard
consider a brayton cycle and assume variable specific heats for air. air enters the compressor of a gas-turbine engine
Using the data shown in Callister Figure 7.19, draw an approximate stress-strain curve for the 1040 steel at 0% cold work and at 30% cold work, clearly indicating the yield strength, ductility, and tensile strength of the steel before and after cold-..
Calculate the delta velocity required to change the inclination of a circular orbit at 32,000 km altitude from a 28.5 degree inclination to an inclination of 45 degrees. Compute the propellant used if the satellite weighs 1200 lbs after the maneuver.
assume that blood is flowing through an aorta of 1cm diameter at an average velocity v of 50 cmsec. take alpha to be 12
a fan is used to accelerate quiescent air to a velocity to 12ms at a rate of 3m3min. if the density of air is 1.15kgm3.
Moist air at 45?C and relative humidity 30% (State 1) with another stream of moist air at 20?C and relative humidity 50% (State 2) in an adiabatic duct. Mass flow rate of dry air is 0.8 kg/s at section 1 and 1 kg/s at section 2. The mixed stream (Sta..
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