Table C-7. Hydrostatic Test Data for Nominal L50-lnch (D;) -2.25-Inch (Dq) 

 Flat Acrylic Windows, Test Specimens 31 -35 



(Sealed with grease; radial clearance 0.005 to 0.010 inch; nominal D^/Dj ratio 1.5) 



Parameter 



Specimen Number 



Value 



31 



32 



33 



34 



35 



Max 



Avg 



Min 



Thickness (in.) 



0.236 



0.234 



0.238 



0.231 



0.229 



0.238 



0.234 



0.229 



Dq (actual, in.) 



2.238 



2.238 



2.236 



2.237 



2.236 



2.238 



2.237 



2.236 



Temperature (°F) 



68 



69 



70 



65 



66 



70 



68 



65 



t/D| Ratio (actual) 



0.157 



0.156 



0.158 



0.154 



0.153 



0.158 



0.156 



0.153 



Pressurization Rote (psi/min) 



682 



712 



675 



685 



648 



712 



680 



648 



Pressure (psi) 



Axial D 



isplaceme 



nt of Center Point 



on Window's Low- 



Pressure 1 



ace (in.) 



200 



0.003 



0.001 



0.001 



0.002 



0.001 



0.003 



0.002 



0.001 



400 



0.010 



0.012 



0.001 



0.007 



0.001 



0.012 



0.006 



0.001 



600 



0.015 



0.017 



0.015 



0.015 



0.002 



0.017 



0.013 



0.002 



800 



0.023 



0.024 



0.015 



0.022 



0.010 



0.024 



0.019 



0.010 



1,000 



0.031 



0.029 



0.026 



0.030 



0.060 



0.060 



0.035 



0.026 



1,200 



0.075 



0.037 





0.040 





0.075 



0.051 



0.037 



1,400 



0.098 

















1,600 



















Pressure at Failure (psi) 



1,430 



1,210 



1,140 



1,320 



1,100 



1,430 



1,240 



1,100 



Note: Erratic deflection. 



55 



