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 17.28PP
Assume that Fig. 17.11 shows the performance of the wing on the race car shown in Fig. 17.15 Note that it is mounted in the inverted position, so the lift pushes down to aid in skid resistance. Compute the downward force exerted on the car by the wing and the drag when the angle of attack is set at
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An aerospace engineer is designing a hover board for a project demonstration. He/She plans to use a single 3-ft-diameter blade span area for generating lift. The estimated overall weight of hover board system is less than or equal to 5 lbf. (a) Mass flow rate needed (b) Mechanical power that must be supplied to the airstream.
A flat plate of 10ft span and 6 ft chord is placed in an airstream of 100mph under SSLC. If the transition Reynold's number is 10^6, calculate the Total Skin Friction Drag in lbs.
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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- An 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_forwardThe maximum lift to drag ratio is 16:9. Calculate the minimum glide angle and maximum range measured along the ground covered in power off glide that starts at an altitude of 4000 feet.arrow_forwardA jet flying at 100m/s banks to make a horizontal circular turn. The radius of the turn is 3810m, and the mass of the jet is 2.02x10^5kg. Calculate the magnitude of the necessary lifting force.arrow_forward
- An aerospace engineer is designing a hover board for a project demonstration. He/She plans to use a single 3-ft-diameter blade span area for generating lift. The estimated overall weight of hover board system is less than or equal to 5 lbf. (a) How much exit velocity of air is to be achieved to lift the board (b) Volumetric flow rate neededarrow_forwardIf your lift to drag ratio is 15 for airline A flight and the airplane weighs 15,000-lb for L/Dmax, what’s the speed for L/Dmax at 22,500 lbs.?arrow_forwardA steel pulley with a mean rim radius of 120 mm is rotated at a speed of 1100 rpm. If the mass of the rim is 5 kgs, What is the centrifugal force?arrow_forward
- If a double-acting air cylinder with a 40-mm diameter bore and 200-mm stroke operates at 7000 kPa gage and cycles at 30 cycles /min , how long will it take to consume 100m3 of free air? (Assume the rod diameter is negligible and there is no change in the temperature of the air.arrow_forwardFor the airfoil given, calculate cm,c/4 and xcp/c when α = 3◦.arrow_forwardA truck having projected area of 6.5 m² and travelling at 72 km/h has a total resistance of 1.6 kN. Out of this resistance, 30% is due to rolling, 20% due to surface friction and rest is due to drag. Calculate the coefficient of drag if specific weight of air is 12 N/m^3.arrow_forward
- Assume the gross weight of the airplane is 600 lbs, what would be a reasonable estimate of its wing loading. *Use significant assumptions and solve this for propellers andjets.arrow_forwardcalculate drag forcearrow_forwardAn airfoil has a lift curve slope at 7/rad and angle at zero lift of -3deg. At what angle of attack will the airfoil develop a lift of 120 lbs/ft at 110 mph under SSLC? Assume c = 10ft.arrow_forward
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