Consider wind at 20°C and 1 atm blowing past a chimney30 m high and 80 cm in diameter. If the chimney may fractureat a base bending moment of 486 kN?m, and its dragcoeffi cient based on frontal area is 0.5, what is the approximatemaximum allowable wind velocity to avoid fracture?(a) 50 mi/h, (b) 75 mi/h, (c) 100 mi/h, (d) 125 mi/h,(e) 150 mi/h

Q: A new sports car has a drag corfficient of 0.30 and a frontal area of 18.5 ft<, and is traveling at…

A: To find: The power required to overcome aerodynamic drag.  Given data. The drag coefficient is…

Q: A fl at-plate airfoil with C = 1.2 m is to have a lift of30 kN/m when fl ying at 5000-m standard…

A: Given data: Chord, C = 1.2 m Velocity , U∞ = 641 m/s Airfoil lift, F = 30 KN/m   Now from properties…

Q: A smokestack is 25 ? tall and 1 ? in diameter. It is exposed to wind of about 50 ??⁄h? at standard…

A: Now, Wind drag force:

Q: Consider the equation gm v (t) (1 – e-C/m}t) For the free-falling bungee jumper with linear drag,…

A:

Q: A long, slender, smooth 3-cm-diameter flagpole bendsalarmingly in 20 mi/h sea-level winds, causing…

A: Given data: The diameter flagpole is D = 3 cm = 0.03 m The speed of wind is v = 20 mi/h Since, 1…

Q: Air at free-stream velocity of 9 m/s flows over a thin flat plate of length 3 m and width 1.5 m. A…

A:

Q: Consider turbulent fl ow past a sharp, smooth fl at plate ofwidth b and length L. What percentage of…

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Q: 6. During a winter day, wind at 70 km/h, 5°C, and 1 atm is blowing parallel to a 4-m-high and 15…

A:

Q: Pravinbhai

A: The objective of the question is to calculate the towing power required when the cylinder is…

Q: b. A long, thin flat plate is placed parallel to a 6 m/s stream of water at 20°C. At what distance X…

A:

Q: A gas at 20°C and 1 atm flow at 6 ft/s past a thin flat plate.At x = 3 ft, the boundary layer…

A: Given data: The velocity of fluid flow is V=6 ft/s. The distance from the leading edge is x=3 ft.…

Q: For the shown continuously circular (i.e. not parabolic) arc airfoil with sharp corners of each 8 =…

A: The airfoil angle, the angle of attack, the Mach number,

Q: A pickup truck has a clean drag area CD A of 35 ft2.Estimate the horsepower required to drive the…

A: Given Data: The drag area is CDA = 35 ft2. Velocity of truck is V=55 mi/h×1.4672 ft/smi/h=80.7…

Q: Air equivalent to one of a standard height of 4000 m flows at 450 mi/h over a wing with a thickness…

A: Given, Velocity = V = 450 mi/h = 201.17 m/s Altitude = h = 4000 m Thickness = t = 18 cm = 0.18 m…

Q: Aerodynamics NACA 747A415, chord is 180 cm 1) What is the location of favorable pressure gradient of…

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Q: A 1500 kg electric vehicle travels along an asphalt roadway with a 5° grade at 100 km/h and a…

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Q: A flat plate ( 1.5 m) long and ( 1.5 m) wide is towed in water ( p 1000 kg/m and v=1.31 * 10 “m² /s)…

A:

Q: For the shown continuously circular (i.e. not parabolic) arc airfoil with sharp corners of each 8 =…

A: The airfoil angle, The angle of attack, The Mach number,

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.