he linkage Q₂BCDEQ₄KF represents the mechanism of the Corliss non-releasing valve gear. Q₂B is a crank 3⅛- inches long oscillating to the right of fixed center Q₂. Q₂C is another crank which is 3⅜-inches long and oscillates below Q₂. Q₄ is a fixed center on a horizontal line through Q₂ and 6 -inches to right of Q₂. EQ₄K to right of Q₄E. Q₄E = 3⅝- inches and Q₄K = 5 -inches. CE is a connecting rod 3½-inches long. BD is a link 2 - inches long connecting B to link CE at D, 1 -inch. from C. KF is a connecting link 8- inches long extending to right of K and is attached to a slide block at F which moves on a horizontal line parallel to and 3-inches below Q₂Q₄. When F, moving to left, reaches a position such that K is to the left of Q₄, and Q₄K makes an angle of 15º to left of vertical, it has a velocity of 5 fps. 1.1 Draw and label the mechanism of the Corliss non-releasing valve gear. 1.2 Find the velocity K in feet per second 1.3 Find the velocity of E in feet per second 1.4 Find the velocity of C in feet per second 1.5 Find the velocity of D in fee
The linkage Q₂BCDEQ₄KF represents the
gear. Q₂B is a crank 3⅛- inches long oscillating to the right of fixed center Q₂. Q₂C is
another crank which is 3⅜-inches long and oscillates below Q₂. Q₄ is a fixed center on a
horizontal line through Q₂ and 6 -inches to right of Q₂. EQ₄K to right of Q₄E. Q₄E = 3⅝-
inches and Q₄K = 5 -inches. CE is a connecting rod 3½-inches long. BD is a link 2 -
inches long connecting B to link CE at D, 1 -inch. from C. KF is a connecting link 8-
inches long extending to right of K and is attached to a slide block at F which moves on
a horizontal line parallel to and 3-inches below Q₂Q₄. When F, moving to left, reaches a
position such that K is to the left of Q₄, and Q₄K makes an angle of 15º to left of vertical,
it has a velocity of 5 fps.
1.1 Draw and label the mechanism of the Corliss non-releasing valve gear.
1.2 Find the velocity K in feet per second
1.3 Find the velocity of E in feet per second
1.4 Find the velocity of C in feet per second
1.5 Find the velocity of D in feet per second
1.6 Draw the velocity Polygon by the semi graphical method
1.7 Determine and tabulate the instantaneous acceleration of K in feet per second per
second
1.8 Determine and tabulate the instantaneous acceleration of E in feet per second per
second
1.9 Determine and tabulate the instantaneous acceleration of D in feet per second
per second
1.10 Determine and tabulate the instantaneous acceleration of C in feet per second
per second
1.11 Determine and tabulate the instantaneous acceleration of B in feet per second
per second
1.12 Draw the acceleration polygon by the semi graphical method.
1.13 Determine and tabulate the instantaneous angular velocity of link KF
1.14 Determine and tabulate the instantaneous angular velocity of link Q₄K
1.15 Determine and tabulate the instantaneous angular velocity of link Q₂C
1.16 Determine and tabulate the instantaneous angular acceleration of link KF
1.17 Determine and tabulate the instantaneous angular acceleration of link Q₄K
1.18 Determine and tabulate the instantaneous angular acceleration of link Q₂C
Scales: Space, ½ in. = 1 in.; velocity, 1 in.=2.5 fps; acceleration to be chosen.
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