
Consider the supersonic flow over an expansion corner, such as given in Figure 9.25. The deflection angle

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Chapter 9 Solutions
Fundamentals of Aerodynamics
- Consider the steady, two-dimensional, incompressible velocity field: V = (u, v) = (ax + b) i` + (−ay + c) j` where a, b, and c are constants. Identify the correct expression for the pressure as a function of x and y.arrow_forwardConsider two-dimensional flow in the xy-plane. The difference in the value of Ψ from one streamline to another is equal to the __________blank between the two streamlines. Multiple Choice volume flow rate per unit width distance velocity volume strain rate per unit widtharrow_forwardMultiple Choice a=2ba=2b a=−ba=−b 3a=2b3a=2b 2a=−3b2a=−3b a=barrow_forward
- Question F: Imagine that the diving board at your local swimming pool is made of cold drawn steel, and that we model it as a cantilever beam. We model the cyclic loading as a person jumping off the diving board for maximum load, and the diving board being at rest for minimum load. The parameters for the problem are shown in the table below. Use only this table for this questionarrow_forwardQuestion P: A spur gear drive in a commercial enclosed gear unit has the input data shown in the table below. Use only this table for this questionarrow_forwardQuestion Q: A spur gear drive in a commercial enclosed gear unit has the input data shown in the table below. Use only this table for this question! Other data can be obtained from the figures and tables from our textbook, also shown below. What is the bending stress number stp in the pinion in psi? (Type in an integer.arrow_forward
- Question 15 0 / 6 points Question O: A spur gear drive has the input data shown in the table below. Use only this table for this question. What is the tangential force on the pinion and gear in pounds? (Type in an integer.) Degrees per Radian = 57.296 degrees Pinion Torque: T= 250 Ibf-in Pinion speed: n₁ = 1150 rpm Pinion Number of teeth: Np = 20 Diametral pitch: Pd = 12 Answer: × (300)arrow_forwardQuestion 14 0 / 6 points Question N: A spur gear drive has the input data shown in in the table below. Use only this table for this question! What is the pitch line speed in ft/min? (Type in an integer.) Degrees per Radian = Pinion speed n p = 57.296 degrees 3540 rpm Pinion Number of teeth: Np = 20 Gear Number of teeth: NG= 50 Diametral pitch: Pd = 6arrow_forwardQuestion M: Use only the following information for this question. A bevel gear drive has the following attributes: The pinion has 20 teeth, the gear ratio is 3.250, the diametral pitch is 10, and the pressure angle is 20°. What is the pitch cone angle of the pinion in degrees? (Type in a one-decimal number.) Answer: x (17.1)arrow_forward
- Question L: A chain drive has information per the table below. Use only this table for this question! You will use Table 7-14 to select components for the chain drive. What is the length of the chain in inches that you should purchase for this application? (First, round up to an even number of pitches for the chain length. Then calculate the chain length in inches. (Type in an integer.) Chain pitch: p = 0.500 inches Roller chain size number = 40 Motor speed n₁ = 500 rpm Design power 3.50 hp Speed ratio: VR = 2.0 Nominal Center Distance: C = 24.00 inches TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40 No. of 0.500-in pitch Rotational Speed of small sprocket in rpm teeth 10 25 11 0.06 0.14 12 0.06 0.15 13 0.07 0.16 14 15 0.08 0.19 16 0.08 0.20 0.39 0.75 17 0.09 0.21 0.41 0.80 18 20 0.09 0.22 19 0.10 0.24 0.10 0.25 0.48 21 1.12 22 0.11 0.27 0.53 1.03 1.81 201 23 0.12 0.28 0.56 1.08 1.90 2.10 24 0.12 0.30 0.58 1.98 2.19 25 0.13 0.31 0.60 1.17 2.06 2.28 3.36 5.49 50 100 180…arrow_forwardQuestion K: A chain drive has information per the table below. Use only this table for this question! You will use Table 7-14 to select components for the chain drive. How many teeth are in the large sprocket? (Type in an integer.) Chain pitch: p= 0.500 inches Roller chain size number = 40 Motor speed n₁ = 500 rpm Design power = 3.50 hp Speed ratio: VR = 2.0 Nominal Center Distance: C = 24.00 inches No. of teeth TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40 0.500-in pitch Rotational Speed of small sprocket in rpm 10 25 50 100 180 200 300 500 700 900 1000 11 12 0.06 0.14 0.27 0.52 0.91 1.00 0.06 0.15 0.99 1.48 2.42 3.34 4.25 4.70 0.29 0.56 1.09 1.61 2.64 3.64 4.64 5.13 13 0.07 0.16 0.31 0.61 1.07 1.19 1.75 2.86 3.95 5.02 5.56 14 0.07 0.17 0.34 0.66 1.15 1.28 1.88 3.08 4.25 5.41 5.98 15 0.08 0.19 0.36 0.70 1.24 1.37 2.02 3.30 4.55 5.80 6.41 16 0.08 0.20 0.39 0.75 1.32 1.46 2.15 3.52 4.86 6.18 6.84 17 0.09 0.21 0.41 0.80 1.40 1.55 18 0.09 0.22 0.43 0.84 19 0.10 0.24 0.46…arrow_forwardQuestion D: Dimensions, material properties, and certain constants for a rod are shown in the table below. Use only this table for this question! Other data can be obtained from the figures and tables shown below. Input Data: Shaft material specification: Machined Steel Type of Stress: Reversed, repeated bending Tensile strength: s₁ = 825 MPa Reliability: 99.0% Material factor: C 0.80 Type of stress factor: Cst Shaft diameter: D= 1.00 Use 0.80 for cast steel Use 1.00 for bending stress 45 mm TABLE 5-3 Approximate Reliability Desired reliability Factors, CR CR 0.50 1.0 0.90 0.90 0.99 0.81 0.999 0.75arrow_forward
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