Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 17, Problem 17.17PP
To determine
The drag exerted on the vehicle by the bar
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The image
below is a cross-section of a Darrieus-type and
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10 = 41-7 RPM
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Chapter 17 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 17 - A cylinder 25 mm in diameter is placed...Ch. 17 - As part of an advertising sign on the top of a...Ch. 17 - Determine the terminal velocity (see Section 2.6.4...Ch. 17 - Calculate the moment at the base of a flagpole...Ch. 17 - A pitcher throws a baseball without spin with a...Ch. 17 - A parachute in the form of a hemispherical cup 1.5...Ch. 17 - Calculate the required diameter of a parachute in...Ch. 17 - A ship tows an instrument in the form of a 30...Ch. 17 - A highway sign is being designed to withstand...Ch. 17 - Assuming that a semitrailer behaves as a square...
Ch. 17 - A type of level indicator incorporates four...Ch. 17 - Prob. 17.12PPCh. 17 - A bulk liquid transport truck incorporates a...Ch. 17 - A wing on a race car is supported by two...Ch. 17 - Prob. 17.15PPCh. 17 - The four designs shown in Fig. 17.16 for the cross...Ch. 17 - Prob. 17.17PPCh. 17 - Prob. 17.18PPCh. 17 - An antenna in the shape of a cylindrical rod...Ch. 17 - Prob. 17.20PPCh. 17 - Prob. 17.21PPCh. 17 - Prob. 17.22PPCh. 17 - Assume that curve 2 in Fig. 17.5 is a true...Ch. 17 - Prob. 17.24PPCh. 17 - Prob. 17.25PPCh. 17 - A small, fast boat has a specific resistance ratio...Ch. 17 - Prob. 17.27PPCh. 17 - Assume that Fig. 17.11 shows the performance of...Ch. 17 - Calculate the total drag on an airfoil that has a...Ch. 17 - Prob. 17.30PPCh. 17 - Prob. 17.31PPCh. 17 - Prob. 17.32PPCh. 17 - Prob. 17.33PP
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- The large block shown is x = 72 cm wide, y = 54 cm long, V3 and z = 9.0 cm high. This block is passing through air (density of air p = 1.43 kg/m³) at a speed of v = 7.98 m/s. Find the drag force Fa1 acting on the block when it has the velocity v and a drag coefficient I = 0.902. レ X Fa1 = N V1 Find the drag force Fa2 acting on the block when it has the velocity v2 with a drag coefficient I = 0.992. Fa.2 = > TOOLS Find the X10 block when it has the velocity vz with a drag coefficient I = 1.17.arrow_forwardAn aircraft is required to climb with 10° of climb angle. The aircraft has a mass of 30,000 kg and produces 50,000 N of drag. Assume zero angle of attack and zero thrust setting angle. How much thrust the aircraft engine must produce?arrow_forwardFor a new sailboat, a designer wants to determine the drag force that may be expected at a given speed. To do so, she places a model of the proposed hull in a test channel and uses three cables to keep its bow on the center-line of the channel. Dynamometer readings indicate that for a given speed, the tension is 35 lb in cable AB and 40 lb in cable AE. The drag force is exerted in the direction of Flow at point A. –7 ft - B E1.5 ft 4 ft Flow A 4 ft E What is the magnitude of the drag force in Ib? What is the magnitude of the tension force in cable AC in Ib? What is the angle a in degrees measured CCW from the vertical? What is the angle B in degrees measured CW from the vertical?arrow_forward
- Thank you!! An aircraft weighing 65.2 kN when empty has a wing plan form area A of 62.3 m^2 . It cruises at a velocity of 900 km/h and a 4.0 degree angle of attack and altitude of 8500m. Also, the wing characteristics of the airfoil are shown. (a) Determine the allowable weigh of the cargo (b) and if the wingspan s is 20m determine the induce drag coefficient C_Di.arrow_forwardNiloarrow_forwardNote: Don't copy from other websites solution, those are wrong solutions. The trailer travels at U = 39 mi/h. The air is still and has a temperature of 60°F. Assume the surfaces are smooth and flat Consider both laminar and turbulent boundary layers. (Figure 1) Part A :Determine the drag acting on each side of the trailer truck.arrow_forward
- For a new sailboat, a designer wants to determine the drag force that may be expected at a given speed. To do so, she places a model of the proposed hull in a test channel and uses three cables to keep its bow on the centerline of the channel. Dynamometer readings indicate that for a given speed, the tension is 40 lb in cable AB and 60 lb in cable AE. Determine the drag force exerted on the hull and the tension in cable AC.arrow_forwardWhat is the total coefficient of a drag if at the maximum CL/Cd, the lift created is 60 lbs? The speed of the aircraft is 20 mph, and the area of the elliptical wing is 70 ft^2. The span of the wing is 20 ft. Assume standard sea level conditions.arrow_forwardProblem 19.2 Moo's Dairy has entered the annual Dairy Drag Race at the State Fair. Her drag racer is a fully-loaded milk truck shown in the figure. When fully loaded, the milk truck weighs 5000 lbf. The truck is a rear-wheel drive vehicle, and the front tires provide negligible frictional drag when rolling. The maximum traction between the tires and the road occurs when there is no slip between the tires and the road, i.e. the force between the road and the tires is due to static friction. The static coefficient of friction between the rubber tires and the concrete pavement is μ = 0.8. a) Determine the reactions between the tires and the road at points A and B, in lbf, when the truck is stationary. b) Determine the maximum acceleration possible for the fully-loaded, rear- wheel drive milk truck, in ft/s² or in g's. Also determine the corresponding reactions at points A and B, in lbf. Is there any danger of the truck tipping under these conditions? Explain. Moo's Dairy da GO dB B da = 4…arrow_forward
- 2. Estimate the horsepower required to accelerate a 2500 lb vehicle traveling 30 mph up a 5.0% grade at a rate of 6ft/. The vehicle has a frontal cross-sectional area of 20 ft-sq. The roadway has a straight alignment and a badly broken and patched asphalt surface. Assume the drag coefficient = 0.3.arrow_forwardUse false-position to determine the drag coefficient c needed for a parachutist of mass m = 68.1 kg to have a velocity of 30 m/s after freefalling for time t = 5 s. Note: The acceleration due to gravity is 9.81 m/s?.arrow_forwardQuestion 2: Consider the 5000kg aircraft below being in a 1000m radius looping maneuver (Fig.2). There are 4 forces acting on the aircraft (Weight, Thrust, Lift, Drag). Assuming that they are all approximately perpendicular to eachother at points A,B,C, calculate the following: A. Calculate the Lift Forces at points A, B, C if the aircraft was at a constant speed of 350km/h throughout the maneuver. B. Calculate the Lift Forces at points A, B, C if the aircraft starts the maneuver at point A at a speed of 400km/h, but reduces its speed with constant acceleration so that the pilot feels weightless at point C. C. A human can withstand earth's gravity was more than 9 times what it is now, we would not survive. What is the maximum of 9 times the gravitational acceleration, i.e. if the maximum speed the pilot can enter this maneuver? Figure 2: Looping Aircraftarrow_forward
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