High-drag areas, such as occur at the junction of lift- 

 producing surfaces and other structural members, are enclosed 

 in Fiberglas-reinforced plastic fairings. The horizontal 

 and vertical stabilizers incorporate adjustable trim tabs 

 so that the depressor's trim can be maintained or changed. 

 The assembly is finished with International Orange enamel. 



CABLE 



The cable is of double-armoured construction with the 

 electrical leads contained in an insulated core. Approxi- 

 mately one-half inch of the overall 3/4-inch- (ncaninal)- 

 diameter is reserved for the electrical core. The overall 

 breaking strength is approximately 45,000 pounds. These 

 cables were originally developed for the petroleum industry 

 for use in logging deep wells; they may be obtained from 

 several major American cable manufacturers. 



Details of the core construction have not yet been 

 specified, pending final selection of the data-transmission 

 scheme. 



CABLE FAIRING AND ATTACHMENTS SED Purchase Specification 



M.S. - 101 



The fairing is David Taylor Model Basin type TF-84. 

 The letters "TF" stand for "trailing fairing," the first 

 numeral designates the ratio of the maximum thickness of 

 the fairing to the diameter of the cable, in tenths, and 



13 



