Security Classification 



DOCUMENT CONTROL DATA - R&D 



(Security classification ot title, body of abstract and indexing annotation muat be entered when the 



all report ie clasaHied) 



1 ORIGINATING ACTIVITY (Corporate author) 



David Taylor Model Basin 

 Washington, D. C. 20007 



REPORT SECURITY CLASSIFICATION 



Unclassified 



2b GROUP 



3 REPORT TITLE 



EVALUATION OF TWO METHODS FOR PREDICTING TOWLINE TENSIONS 

 AND CONFIGURATIONS OF A TOWED BODY SYSTEM USING BARE CABLE 



4 DESCRIPTIVE NOTES (Type ot report and inclusive dates) 



Formal Report 



5 AUTHORfS; (Last name, first name, initial) 



Gibbons, T. and Walton, CO, 



6 REPO RT DATE 



December 1966 



7a. TOTAL NO. OF PAGES 



48 



7 6. NO. OF REFS 

 11 



8a. CONTRACT OR GRANT NO. 



6. PROJECT NO. 



9a. ORIGINATOR'S REPORT NUMBERfS; 



2313 



Subproject S-F006 03 02 



c.Task 7462 



rfDTMB Problem No. 549-029 



10 AVAILABILITY/LIMITATION NOTICES 



Distribution of this document is unlimited 



ii. Supplementary notes 



12. SPONSORING MILITARY ACTIVITY 



Naval Material Command 

 Naval Ship Engineering Center 

 Washington. D. C. 20360 



13. ABSTRACT 



Two alternative methods for predicting steady- state configurations 

 and towline tensions are evaluated by comparing predicted data with 

 experimental data. Between the two methods, Method 1 is shown to 

 provide better overall predictions of cable tension, cable angle at towing 

 ship, and body depth for the bare-cable case. The best agreement 

 between the experimental data and the data predicted by Method 1 is 

 obtained with a cable drag coefficient of 1. 5 and a tangential force factor 

 of 0.02. 



DD 



1 JAN 64 



1473 



Unclassified 



Security Classification 



