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Shown in Fig. P12.11 is a toy "helicopter" powered by air escaping from a balloon. The air from the balloon flows radially through each of the three propeller blades and out small nozzles at the tips of the blades. The nozzles (along with the rotating propeller blades) are tilted at a small angle as indicated. Sketch the velocity triangle (i.e., blade, absolute, and relative velocities) for the flow from the nozzles. Explain why this toy tends to move upward. Is this a turbine? Pump?
Calculate the Molar concentration of hydrogen on both sides, Molar flux of hydrogen and mass flux of hydrogen
on the apollo 14 mission to the moon astronaut alan shepard hit a golf ball with a golf club improvised from a tool.
calculate the force necessary to accelerate a 20 kg 400mm diameter sphere which is at rest under water at the rate of 5
The polynomial method is to be used to solve the equation. For the graphs, Mathcad or similar program is necessary to graph the solution.
Design a discrete (Z-domain) proportional plus integral plus derivatives (PID) controller for the type-1 plant derived from Lab 2. The controller should satisfy the following specifications:
A Heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 40,000 Btu/h.The coefficient of performance of the cycle is 2.8. Determine the power input to the cycle, in hp.
air initially at a dry-bulb temperature of 45 degrees c and hr 10 is adiabatically humidified to hr 60.a determine
If a 30% decliningbalance depreciation rate is used to estimate salvage values, and interest is 8%, how often should Gerry get a new car?
Carbon dioxide (CO2) gas undergoes a process in a closed system from T1=100 F, p1=20 lbf/in^2 to T2=400 R,p2=50 lbf/in^2. The entropy produced due to internal irreversibilities during the process is determined to be 0.15 Btu/R per lb of gas.
the combustion products in an internal combustion engine undergo an expansion process from an initial volume of 0.007
Consider the 371-mm-diameter pump curve of Fig. 12.9. If the pump is run at 1200 rpm to deliver 0.8 m3 /s of water, find the resulting head rise and fluid power.
determine the resultant force r made by the force p having a magnitude ofnbsp50n and making an angle theta 35 degrees
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