we may, therefore, conclude that the contribution due 

 to bending is negligible in comparison v^ith that due to axial 

 loading. sxibstitution of a homogeneous compound for the 

 present t^^'0- compound construction should have virtually no 

 effect on the location of the centroid of the externally im- 

 posed forces, since practically all the load is carried in 

 the Dacron-cord reinforcement. Long sections of the two- 

 coinpound-construction fairing have evidenced no instability 



while under tow when excessive stretching was avoided. Sub- 

 stitution of the single-durometer construction, then, should 

 result in no adverse effects on stability. 



Selection of Length 



It was desired to miniiaize tlie nujuber and sii.e of stops 

 to avoid problems in reeving over drums and sheaves, and yet 

 eliminate excessive stretch and bunching of the fairing near 

 the lower stops. The selected length represents a compro- 

 mise between these two goals. 



The elastic laodulus of the fairing was estimated on the 

 basis of the ejcperimen tally determined characteristics of simi- 

 lar fairings, which indicate that tlie product of A, tlie area 

 iii cross section, and E, the modulus of elasticity, is about 

 12,000 x^ounds. e , tlie strain under the load T, at a point, 



1.15 



I'M^mauM^vm:- ^- m . - ' - . — . L.i r -i.j 



