Engineering, 11.03.2021 15:10 danielboek
A Hartnell governor has two rotating balls, of mass 2.7 kg each. The ball radius is 125 mm in the mean position when the
ball arms are vertical and the speed is 150 r. p.m. with the sleeve rising. The length of the ball arms is 140 mm and the
length of the sleeve arms 90 mm. The stiffness of the spring is 7 kN/m and the total sleeve movement is 12 mm from the
mean position. Allowing for a constant friction force of 14 N acting at the sleeve, determine the speed range of the
governor in the lowest and highest sleeve positions. Neglect the obliquity of the ball arms
Answers: 1
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A Hartnell governor has two rotating balls, of mass 2.7 kg each. The ball radius is 125 mm in the me...
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