CABLE STOP 



Requirement a 



Olie towed cable fairing is subjected to a force (the 

 tangential ccniponent of the hydrodynamlc drag) acting along 

 its length. To prevent the fairing from sliding down the 

 cable under the action of this force, the fairing must be 

 attached to the cable by a free-swivelling attachment. The 

 attachment must grip the cable with sufficient force to sus- 

 tain the load even under the condition in which the cable, 

 under load, may reduce slightly in diameter. 



For design purposes, the maximum load requirement was 

 based on Eames' loading functions. The maximum load required 

 to be carried by the stop was thus taken to be 510 pounds for 

 a 200-foot length of fairing. 



Design Approach 



For ease of assembly to the cable ^ a split-ring- type 

 stop that grips the cable by means of friction, was developed. 

 To allow for possible reduction in cable diameter, a resili- 

 ent liner was selected which, under pre-compression^ retains 

 enough normal force to develop the frictional forces required 

 to sustain the load. Because of encouraging results of DIHB 

 tests of cable stops lined with sand-lnpregnated polyurethane^ 

 this material was selected for this application. 



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