Ellip-BPW
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2:1 Elliptical Tank Head Buoyancy, Pressure, and We A listing of common sized elliptical tank heads showing their weight, buoyancy, and maximum ABS pressure rating. DISCLAIMER: Personal submersibles are potentially dangerous. You can drown, suffoc bends or have any number of other fatal mishaps in a submersible. The information contai intended for illustration purposes only and should be used cautiously. No warranty of accur information contained within this document is expressed or implied. Use of this material requi professional mechanical engineer. YOU are the one ultimately responsible for your life and the underwater vehicle. IMPORTANT NOTES: - Pressure ratings (P-max) and maximum depth (D-max) shown in this chart are thickness. All tank heads will have sections thinner than the nominal thickness due to Contact your supplier to determine the dimension of the thinnest tank head section after forming calculate the critical pressure (crush depth) for that particular tank head. - Displacement and Buoyancy are different between fresh and salt water. Use t your specific design or diving requirements. - P-MAX = Maximum pressure rating - D-MAX = Maximum depth rating Revision History
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Ellip-BPW
Transcript of Ellip-BPW
Introduction
2:1 Elliptical Tank Head Buoyancy, Pressure, and Weight Chart
A listing of common sized elliptical tank heads showing their weight, buoyancy, and maximum ABS pressure rating.
DISCLAIMER: Personal submersibles are potentially dangerous. You can drown, suffocate, be crushed, get the bendsor have any number of other fatal mishaps in a submersible. The information contained within this document is intendedfor illustration purposes only and should be used cautiously. No warranty of accuracy pertaining to any data informationcontained within this document is expressed or implied. Use of this material requires review by a licensed professionalmechanical engineer. YOU are the one ultimately responsible for your life and the lives of others in yourunderwater vehicle.
IMPORTANT NOTES: - Pressure ratings (P-max) and maximum depth (D-max) shown in this chart are based upon nomimal material thickness. All tank heads will have sections thinner than the nominal thickness due to forming and fabrication. Contact your supplier to determine the dimension of the thinnest tank head section after forming and use that number to calculate the critical pressure (crush depth) for that particular tank head.
- Displacement and Buoyancy are different between fresh and salt water. Use the appropriate data sheet for your specific design or diving requirements.
- P-MAX = Maximum pressure rating
- D-MAX = Maximum depth rating
Revision History09/14/2010 - Original Version
SeaWater2:1 Elliptical HeadsDiameter (OD)T-nomSkirtVolume (gals)Weight (lbs)Displacement (lbs)Buoyancy (lbs)P-MAXD-MAX120.10721.965.4516.7711.32257577120.13521.966.8816.779.89352790120.19221.969.7916.776.985421218140.25022.8917.0124.737.716171387140.37522.8925.5224.73-0.799652168140.50022.8934.0324.73-9.3013072936160.25024.0621.9034.7412.845281186160.37524.0632.8534.741.898351878160.50024.0643.7934.74-9.0611362552180.25025.5127.4047.1419.754591031180.37525.5141.0947.146.057341649180.50025.5154.7947.14-7.6510032254240.250211.7547.57100.5352.96318715240.375211.7571.36100.5329.185281186240.500211.7595.14100.535.397341649300.250221.4273.27183.27110.00234525300.375221.42109.90183.2773.37403905300.500221.42146.54183.2736.735701280360.250235.25104.49301.60197.11178400360.375235.25156.73301.60144.87318715360.500235.25208.98301.6092.624591031360.625235.25261.22301.6040.385971342480.250278.33183.49670.19486.70113253480.375278.33275.24670.19394.95213479480.500278.33366.99670.19303.21318715480.625278.33458.73670.19211.46423952600.2502109.05284.58933.03648.4577173600.3752109.05426.88933.03506.15151340600.5002109.05569.17933.03363.86234525600.6252109.05711.46933.03221.57318715720.2502246.75407.762111.191703.4356125720.3752246.75611.652111.191499.55113253720.5002246.75815.532111.191295.66178400720.6252246.751019.412111.191091.78248557840.2502383.84553.033284.142731.104396840.3752383.84829.553284.142454.5986194840.5002383.841106.063284.142178.07140315840.6252383.841382.583284.141901.56198446960.2502564.01720.394825.674105.283272960.3752564.011080.584825.673745.0968154960.5002564.011440.774825.673384.90113253960.6252564.011800.974825.673024.70161363
FreshWater2:1 Elliptical HeadsDiameter (OD)T-nomSkirtVolume (gals)Weight (lbs)Displacement (lbs)Buoyancy (lbs)P-MAXD-MAX120.10721.965.4516.3410.89257593120.13521.966.8816.349.46352812120.19221.969.7916.346.555421252140.25022.8917.0124.097.086171425140.37522.8925.5224.09-1.439652228140.50022.8934.0324.09-9.9313073017160.25024.0621.9033.8511.955281219160.37524.0632.8533.851.008351930160.50024.0643.7933.85-9.9511362623180.25025.5127.4045.9418.544591060180.37525.5141.0945.944.847341694180.50025.5154.7945.94-8.8510032316240.250211.7547.5797.9650.39318735240.375211.7571.3697.9626.605281219240.500211.7595.1497.962.827341694300.250221.4273.27178.58105.31234540300.375221.42109.90178.5868.68403930300.500221.42146.54178.5832.045701315360.250235.25104.49293.88189.39178412360.375235.25156.73293.88137.15318735360.500235.25208.98293.8884.904591060360.625235.25261.22293.8832.665971379480.250278.33183.49653.04469.54113260480.375278.33275.24653.04377.80213492480.500278.33366.99653.04286.05318735480.625278.33458.73653.04194.31423978600.2502109.05284.58909.15624.5777178600.3752109.05426.88909.15482.27151350600.5002109.05569.17909.15339.98234540600.6252109.05711.46909.15197.69318735720.2502246.75407.762057.151649.3956128720.3752246.75611.652057.151445.51113260720.5002246.75815.532057.151241.63178412720.6252246.751019.412057.151037.74248573840.2502383.84553.033200.072647.044399840.3752383.84829.553200.072370.5386200840.5002383.841106.063200.072094.01140323840.6252383.841382.583200.071817.49198458960.2502564.01720.394702.153981.763274960.3752564.011080.584702.153621.5768158960.5002564.011440.774702.153261.38113260960.6252564.011800.974702.152901.18161373
