2. You are working for a glider manufacturer and have been asked to analyse the laminar boundary layer at a certain point on the smooth wing. The velocity profile at this point, u(y), is given by: 3 = 3 (²) ² -² (1)²³ +4 () 2 น == Us A + B where 8 is the boundary-layer thickness and us is the velocity at the edge of the boundary layer. A and B are constants. a) Determine the values of A and B such that the primary boundary conditions for the velocity profile are satisfied. Is it necessary to apply any auxiliary boundary conditions?

Build the following part. Report the mass in pounds. Assume all dimensions are in inches. The material is Vanadium. (Located in the "Other Metals" folder in the material properties.) A = 1.72 B = 1.4 2.40 1.20 T .75 TYP 1.20 TYP .70 -1.00 TYP A A A+3.25 R.35 TYP -R.65 TYP CBORE FOR 5/16 HEX HEAD BOLT Ø.332 THRU ALL LØ813 V 235 .10- SECTION A-A 23. B B+1

system, the driver gear ear's axle by a certain small motor. Hand drills pm) are the number ocity ratio (VR) is abling гор task 2 Calculate mechanical advantage for gears using ratios n your own. rook at the gear train in Figure 15. Driver gear Teeth = 25 90 rpm ar the driver, the has 40 what is 04 cm 012 cm Driven gear Teeth = 75 2. d) b) a) Figure 15 Determine how many times the driven gear will rotate for every full rotation of the driver gear. Use the gear wheel diameter formula. Use the tooth ratio formula to calculate the gear ratio of the gear train. (3) Calculate the output speed of the driven gear. Look at the gear train in Figure 16. Calculate the velocity ratio of the driven gear. Calculate the velocity ratio in revolutions per minute at gear C. Driver gear Teeth = 15 Idler gear Teeth = 45 (4) (3) (3) (8) Figure 16 A B Driven gear Teeth = 5

28 - The strength coefficient and strain-hardening exponent of a certain test metal are 700 MPa and 0,35 respectively. A cylindrical specimen of the metal with starting diameter 78 mm is stretched. If the average flow stress on the part is 420 MPa determine the final diameter of the specimen. a) 75,07 mm b) 39,47 mm c) O 50,37 mm d) O 59,33 mm Boş bırak