P/N 80540 VISIT US ON OUR WEBSITE @ WWW.PSI-PCI.COM SIZE: 15.424'' in ID SIZE: 391.76 mm ID Updated August 2011 The propellant tank is a spherical pressure vessel constructed from two (2) machined 6AL-4V titanium hemispheres girth welded at the equator. Mounting is accomplished by a base mount welded to the outlet hemisphere. Gas free propellant is provided by an all-metal propellant management device (PMD). A.250 inch O.D by.020 inch wall 304L CRES transition tube is butt welded to the tube extension for the pressurant inlet connection adn to a 3AL-2.5V formed titanium tube for the propellant outlet. Specification Requirements Imperial Units Ref. Temp. Metric Units Ref. Temp Operating Pressure 250.00 psid 131.0 F 17.24 bar 55.0 C Proof Pressure 375.00 psid 131.0 F 25.86 bar 55.0 C Proof Cycle N/A psig N/A F N/A bar N/A C Reference / Note MEOP Cycle N/A psig N/A F N/A bar N/A C Design Burst Pressure 500.00 psid 131.0 F 34.48 bar 55.0 C No Burst Test Total Tank Volume 1,892.00 in 3 N/A F 31.02 liters N/A C Required Propellant Volume 65.50 lb N/A F 29.74 liters N/A C 91-97% fill fraction Maximum Mass 5.90 lb 2.68 kg Propellant Tube Diameter 0.250 inch 6.35 mm Pressurant Tube Diameter 0.250 inch 6.35 mm Frequency - lateral > 100 Hz Frequency - axial > 100 Hz Sine Vibration Levels Loaded Tank Qualification/Protoflight (Propellant) Test Axis Frequency (Hz) Acceleration* (g, 0-peak) Lateral (X or 5 to 1.7 0.25 in. S.A Y) 17.7 to 100 8 Protoflight 5.0 to 22.4 0.25 in. S.A Axial (Z) 22.4 to 100 12.75 * Increase acceleration levels for test performed with water Loaded Tank-Acceptance (Propellant) Test Axis Frequency (Hz) Acceleration* (g, 0-peak) Lateral (X or 5 to 17.7 0.20 in. S.A Y) 17.7 to 100 6.5 Acceptance 5.0 to 22.4 0.20 in. S.A Axial (Z) 22.4 to 100 10.2 * Increase acceleration levels for test performed with water Limit Acceleration* (g) 8 12.75 Limit Acceleration* (g) 6.4 10.2 Unloaded Tank-Qualification/Protoflight (For Shipping & Handling) Test Axis All (X,Y,Z) Frequency (Hz) 5.0 to 10.8 Acceleration (g, 0-peak) 0.25 in. S.A Qualification 10.8 to 20 3 20.0 to 100 1.5 100.0 to 400 1 Sweep Rate: 2 octaves/min Qualification 4 octaves/min Protoflight and Acceptance Note: Tank is loaded with 29.6 kg of distilled water for wet sine vibration testing.
Frequency (Hz) 20 20 to 50 50 to 800 800 to 2000 2000 Overall (g rms ) Loaded Tank: Random Vibration Level (Propellant*) Protoflight and Qualification Acceptance (Reference only -- test not required) 0.026 g 2 /Hz +6 db/oct 0.16g 2 /Hz -6 db/oct 0.026 g rms 14.1 g rms 0.013 g 2 /Hz +6 db/oct 0.08g 2 /Hz -6db/oct 0.013 g rms 10.0 g rms * Increase random vibration levels for test performed with water. Tank is loaded with 29.6 kg (97% tank volume) water. Duration: 3.0 Minutes/Axis, Qualification 1.0 Minute/Axis, Acceptance and Protoflight
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ACCEPTANCE TESTS Reference Document Actual Test Data: Serial No. 0002 Examination of Product 50-000747 Pass Pass/fail Weight Determination 5.9 lb maximum 50-000747 5.51 lb actual Pre-Proof Volume Determination 1892 in 3, record required 50-000747 1899.9 in 3, record actual Proof Pressure Test 375 psig, record required 50-000747 385 psig, record actual Post-Proof Volume Determination 1892 in 3, record required 50-000747 1899.9 in 3, record actual Expulsion Efficiency 99.9 %, record required 50-000747 99.9 %, record actual PMD Bubble Point Test Proprietary Record required 50-000747 ProprietaryRecord actual External Leakage Test 1.0 x 10-6 std/cc He max 50-000747 2.9x10-8 scc/sec Record actual Penetrant Inspection 50-000747 Pass Pass/fail Radiographic Inspection 50-000747 Pass Pass/fail Final Examination of Product 50-000747 Pass Pass/fail Cleanliness Verfication Record required 50-000747 Pass Record actual Protoflight Test Reference Document Actual Test Data: Serial No. 0001Q Examination of Product 50-000748 Pass Pass/fail Weight Determination 5.9 lb maximum 50-000748 5.51 lb actual Pre-Proof Volume Determination 1892 in 3, record required 50-000748 1904.4 in 3, record actual Proof Pressure Test 375 psig, record required 50-000748 385 psig, record actual Post-Proof Volume Determination 1892 in 3, record required 50-000748 1904.4 in 3, record actual Proof Cycle N/A psig, record required N/A N/A psig, record actual MEOP Cycle N/A psig, record required N/A N/A psig, record actual Vibration Test, Random Expulsion Efficiency 99 %, record required See below for details* 50-000748 99.9 %, record actual PMD Bubble Point Test Proprietary Record required 50-000748 ProprietaryRecord actual External Leakage Test 1 x 10-6 std/cc He max, 50-000748 4.3 x 10-8 std/cc He, record actual Penetrant Inspection 50-000748 Pass Pass/fail Radiographic Inspection 50-000748 Pass Pass/fail Final Examination of Product 50-000748 Pass Pass/fail Cleanliness Verfication Record required 50-000748 Pass Record actual Burst Pressure Test N/A psig,record required N/A N/A psig,record actual Protoflight Dry Sine Vibration Levels Frequency Levels 5-10.8 0.25 inch 10.8-20 3.0 S.Ag 20.0-100 1.5 g 100.0-400 1.0 g Protoflight Sine (Wet) Vibration Acceleration Load Limits Axis Levels X or Y (Lateral) 8.0 g Z (Axial) 12.75 g Protoflight Wet Sine Vibration Test Random Vibration Test Lateral (X or Y) Frequency (Hz) Levels Frequency (Hz) Levels 20 0.026g 2 /Hz 5-17.7 0.25 inch 20-50 +6dB/Octave 17.7-100 Axial (Z) 8.0 S.Ag 50-800 800-2000 0.16g 2 /Hz -6dB/Octave Frequency (Hz) Levels 2000 0.026g 2 /Hz 5-22.4 0.25 inch S.A Overall grms 14.1 22.4-100 12.75 g Tank is loaded with 29.6 kg of distilled water and pressurized to Sweep Rate is 4 octaves per minute 250 psig. Tank is loaded with 29.6 kg of distlled water at testing.