An airplane weighing 5,000 lb is flying at standard sea level with a velocity of 550 mi/h. At this velocity, the L/D ratio is a maximum. The wing area and aspect ratio are 200 ft² and 8.5, respectively. The Oswald efficiency factor is 0.93. Calculate the total drag on the airplane. Assume ?_? = 0.002377 slug/ft³. (Round the final answer to one decimal place.)

The total drag on the airplane is _______lb.

Develop MATLAB codes for Blade Element Momentum Theory for horizontal axis tidal turbine for airfoil NACA 0015, analyzing the performance of the turbine; power.

In Systems Engineering, What is CM? What is Change Management? What are their similarities and what are the differences?

Show that, for places of latitude angle of l, the solar attitude angle at solar noon (when maximum solar radiation of the day is achieved) can be calculated by ? = 90 - ?l-?? where ? is the deflection angle of the day of consideration

A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and 300 K. A hole develops in the wall, and air from the surroundings at 1 bar, 300 K flows in until the pressure in the tank reaches 1 bar. Heat transfer between the contents of the tank and the surroundings is negligible. Determine the final temperature in the tank, in K. What is the entropy generation of the process? (Please treat the air as ideal gas with cp=1.001 kJ/kg?K and cv=0.714 kJ/kg?K)

True or False:

1. Keys are used to enable transmission of torque from the shaft to the shaft supported elements.

2. For the same bore diameter, a cylindrical roller bearing generally has a lower load carrying capacity than ball bearings.

3. Thrust bearings are suitable for supporting both axial and radial loads.

4. Typical bearing failures are due to excessive static stresses.

5. According to the seminar presentations, materials for joint replacements are selected on basis of the loading as well as their biocompatibility.

6. According to the seminar presentations, microturbine shafts are supported on air bearings?

a. Conduct an analysis for a gas turbine combustor using Propane, C3H8, you can assume the product outlet temperature is 1500 K and the air inlet temperature is 650 K on a standard day (25 C) and the fuel enters at ambient temperature.

How does the crystal structure influence friction? Why do FCC metals have more friction than HCP metals?

designing a boiler in a chemical plant which is operated on twolevel L1 and L2 and two temeprature settings T1 and T2 ....L1: start inlet valve for fluid to flow in tank , L2 : stop inlet valve, T1 and T@ are the safe temperature range for some operation consider you as system engineer depending on follwing > promram development safe systes commiossioning fault finding sytem documentation What are the necessary action and feature you will add to task for the safe operation of boiler

a. Write down the formula for the coefficient of performance (COP) of refrigerator.

b. Describe characteristics of the Carnot refrigeration cycle.

c. Write down the formula for the efficiency of reversible heat engine.

Nitrogen at 500 KPa, 500K is in a 1m³ insulated tank connected to a pipe with a value to a second

insulated initially empty tank of 0.5m³. The value is opened and the nitrogen fills both tanks. Find the

final temperature, pressure and the entropy generation this process causes.(the gas constant of nitrogen is R=0.2968 KJ/Kg?K)

Derive the 2nd order accurate finite difference approximation for the 1st derivative of a function at the data point Xo. That is, find the coefficients a, b, c such that: af(Xo) + bf(X1) + cf(X2) = f'(Xo) + O(h^2). (Note: there is a prime sign on the f'(Xo) at the right side)