NOTATION 



F The drag per unit length of the cable when the cable is parallel to the stream 



f The ratio F/R 



P The component of the external forces acting upon an element of cable in the direction 

 of the element 



p The ratio P/R 



Q The component of the external forces, acting upon an element of cable, that is in the 

 direction 90° counterclockwise from the direction of the element 



q The ratio Q/R 



R The drag per unit length of the cable when the cable is normal to the stream 



s The distance along the cable measured positively in the sense of positive progression 



along the cable; see Figure 1 on page 2. 



T The tension in the cable at an arbitrarily chosen point 



T The tension in the cable at the point chosen as origin of the coordinate system 



W The weight in water per unit length of the cable 



w The ratio W/R 



X, y The rectangular coordinates of an arbitrarily chosen point on the cable; see Figure 1. 



f , Tj The nondimensional rectangular coordinates; ^ = iL^; j^ ^ EjL 



a The nondimensional length of cable, Rs/Tl 



T The nondimensional tension, T/T^ 



The angle from the direction of motion to the direction of the tangent to the cable at an 



arbitrarily chosen point on the cable, the direction of the tangent being taken in the 

 sense of increasing s; see Figure 1. 



cf) ' The difference tt - <^ 



(f)" The difference (ft - n 



(f> The critical angle of the cable, i.e., the value of the angle obtained when the cable 

 is freely trailed in the stream 



cf>„ The value of ^ at the point chosen as the origin of the coordinate system 



