INNER SHELL 



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OUTER SHELL 



All dimenalons are In inches. 



Figure 9 - Details of Model OV-5 



the original hull weight. The elastic general-instability strength for the 

 four-diameter-long redesigned model (OV-5) is exactly the same as that 

 for the one-diameter-long model (OV-3) based on the original design. 



The dimensions and design details of Model OV-5 are shown in Fig- 

 ure 9. Construction of this model was similar to that of Models OV-3 and 

 OV-4. It was machined from a 4|-in. -diameter bar of 6A1-4V a-titanium 

 alloy. Six compression specimens were taken from the bar; the yield 



14 



