The block brake is used to stop the wheel from rotating when the wheel is subjected to a couple moment, M 0 . If the coefficient of static friction between the wheel and the block is, μ s , determine the smallest force P that should be applied.
The block brake is used to stop the wheel from rotating when the wheel is subjected to a couple moment, M 0 . If the coefficient of static friction between the wheel and the block is, μ s , determine the smallest force P that should be applied.
The block brake is used to stop the wheel from rotating when the wheel is subjected to a couple moment, M0. If the coefficient of static friction between the wheel and the block is, μs, determine the smallest force P that should be applied.
given below:
A rectangular wing with wing twist yields the spanwise circulation distribution
kbV1
roy) = kbv. (2)
where k is a constant, b is the span length and V. is the free-stream velocity. The wing has an
aspect ratio of 4. For all wing sections, the lift curve slope (ag) is 2 and the zero-lift angle of
attack (a=0) is 0.
a. Derive expressions for the downwash (w) and induced angle of attack a distributions
along the span.
b. Derive an expression for the induced drag coefficient.
c. Calculate the span efficiency factor.
d. Calculate the value of k if the wing has a washout and the difference between the
geometric angles of attack of the root (y = 0) and the tip (y = tb/2) is:
a(y = 0) a(y = ±b/2) = /18
Hint: Use the coordinate transformation y = cos (0)
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A heavy car plunges into a lake during an accident and lands at the bottom of the lake
on its wheels as shown in figure. The door is 1.2 m high and I m wide, and the top edge of
Deine the hadrostatic force on the
Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required
motion is as follows;
1- Rising 60 mm in 135° with uniform acceleration and retardation motion.
2- Dwell 90°
3- Falling 60 mm for 135° with Uniform acceleration-retardation motion.
Then design the cam profile to give the above displacement diagram if the minimum circle
diameter of the cam is 50 mm.
=
-20125
750 x2.01
Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required
motion is as follows;
1- Rising 60 mm in 135° with uniform acceleration and retardation motion.
2- Dwell 90°
3- Falling 60 mm for 135° with Uniform acceleration-retardation motion.
Then design the cam profile to give the above displacement diagram if the minimum circle
diameter of the cam is 50 mm.
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