1. In a radical engine the moving parts have a total moment of inertia of 1 kg m², and this is concentrated in the plane

[answerhappygod]

1 In A Radical Engine The Moving Parts Have A Total Moment Of Inertia Of 1 Kg M And This Is Concentrated In The Plane 1 (23.63 KiB) Viewed 12 times

1. In a radical engine the moving parts have a total moment of inertia of 1 kg m², and this is concentrated in the plane of the single crankpin. The engine is directly connected to an air-screw of moment of inertia 18 kg m², by a hollow shaft having outer and inner diameters of 80 mm, and 35 mm, and a single effective length of 0.30m. The stiffness of the crank-throw alone is 2.5X10 Nm/rad. Estimate the natural frequency of torsional vibration of the system. What percentage is involved if the air-screw mass is assumed to be infinite. G= 83000 N/mm². HINT The stiffness of the crank-throw may be =+ reduced to an equivalent length of shaft at the same diameter as the engine using ㅗ 22