VISIT US ON OUR

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1 VISIT US ON OUR SIZE: 49.25'' in ID x 72.29'' in length Updated August 2011 SIZE: mm ID x mm length The tank assembly is a hemispherical pressure vessel of all welded construction. It is mounted by 32 circumferential tabs with nut plates located on one of the hemispheres near the girth weld joint. The tank contains an internally-mounted propellant management device (PMD), with perforated sheet and woven screen, fabricated to maintain speration of liquid propellant and gaseous pressurant, and to provide predictable gas-free liquid propellant expulsion from the tank under low or zero gravity conditions. The PMD has been designed to allow horizontal handling with low fill fractions. The PMD has also been modified by the addition of a slosh control device to allow multiple erection and de-erection cycles. The propellant and pressurant ports are 3/8 inch titanium-to-304 CRES transition tubes. Specification Requirements Imperial Units Ref. Temp. Metric Units Ref. Temp Reference / Note P/N Operating Pressure Proof Pressure Proof Cycle MEOP Cycle Design Burst Pressure Total Tank Volume Required Propellant Volume Maximum Mass Propellant Tube Diameter Pressurant Tube Diameter Frequency - lateral* Frequency - axial* , > 20 > 100 psid psid psid psid psid in3 in3 lb inch inch Hz Hz 92 F F F F F F F , bar bar bar bar bar liters liters kg mm mm 33.3 C C C C C C C 24 cycles 25 cycles minimum 20 to 96% fill fraction When immersed in propellant When immersed in propellant Loaded Tank Sine Vibration-Qualification/Protoflight (Wet) Frequency Acceleration (g,0-peak) in. S.A Lateral (X or Y) in. S.A Protoflight * Ramp Down Axial(Z) Ramp Down Fluid: Loaded with 1670 kg of distilled water. Limit Acceleration(g) * 10.2* 10.2* Loaded Tank Sine Vibration - Acceptance (Wet) Frequency Acceleration(g, 0 -Peak) in. S.A Lateral (X or Y) in. S.A Acceptance * Ramp Down Axial (Z) Ramp Down * Allowance made for 1g gravitational Limit Acceleration (g) * 7.6* 7.6* Test Test Axis Axis

2 Unloaded Tank Sine Vibration - Qualification and Protoflight Frequency (Hz) Acceleration (g, 0-Peak) Test Axis in. S.A Qualification All (X,Y,Z) Sweep Rate: 2 octaves/min Qualification 4 octaves/min Protoflight and Acceptance Loaded Tank Water: Random Vibration Level Frequency Protoflight and Qualification Acceptance (Reference only - - test not required) 90 to to to db/oct +30 db/oct g2/hz -3 db/oct g2/hz -3 db/oct OVERALL (grms) Loaded with 1670 kg of water and pressurized to MEOP 3.0 Minutes/Axis, Qualification Duration: 1.0 Minute/Axis, Acceptance and Protoflight

3 Interface Vibration test plot

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6 ACCEPTANCE TESTS Examination of Product Weight Determination Pre-Proof Volume Determination Proof Pressure Test Post-Proof Volume Determination Expulsion Efficiency PMD Bubble Point Test External Leakage Test Penetrant Inspection Radiographic Inspection Final Examination of Product Cleanliness Verfication QUALIFICATION TESTS Examination of Product Weight Determination Pre-Proof Volume Determination Proof Pressure Test Post-Proof Volume Determination Proof Pressure Cycle Test MEOP Pressure Cycle Test Expulsion Efficiency Vibration Test PMD Bubble Point Test External Leakage Test Penetrant Inspection Radiographic Inspection Final Examination of Product Cleanliness Verfication Burst Pressure Test Reference Document Pass required lb maximum in3, record required psig, record required Actual Test Data: Serial No. XXX Pass/fail lb actual Acceptance Test not available as of 08/11/ in, record required %, record required Record required Propietary -6 Record required <1x10 std/cc Pass required Pass required Pass required Record required in3, record actual psig, record actual 3 in, record actual %, record actual Record actual Record actual Pass/fail Pass/fail Pass/fail Record actual Reference Document Actual Test Data: SN 0001Q Pass Pass/fail lbs actual in3, record actual in3, record required psig, record required psig, record actual in3, record actual in3, record required psig, record required psig, 24 cycles psig, record required psig, 100 cycles %, record required > %, record actual See below for more details* Proprietary Record required PropietaryRecord actual std/cc He max x x10-8 std/cc He, record actual Pass required Pass Pass/fail Pass required Pass Pass/fail Pass required Pass Pass/fail Record required Pass Record actual psig, record required psig,record rupture Pass required lb maximum *Qualification Vibration Test Charts Natural Frequency Required min frequency ~ 47 Hz > 35 Hz X-Axis ~ 47 Hz > 35 Hz Y-Axis (lateral) ~ 61 Hz > 55 Hz Z-Axis (axial) Fluid: 3682 lb of Water or Nitrogen 250 psig and ~ 64 deg. F *Qualification Sine Vibration Levels (Dry) Axis Y&Z Frequency (Hz) Acceleration(G) (0-PEAK).25 inch SA *Qualification Sine Vibration Levels (Wet) Axis Lateral (Y) Axial (Z) Frequency (Hz) 5-13 Acceleration (G) (0-Peak).25 inch SA inch SA 10.2 Ramp Down 2.6 Ramp Down 1.3 *Qualification Random Vibration Levels Frequency(Hz) Overall G-rms Levels + 30 db/octave.054 G2/Hz -3dB/Octave 8.7 Prior to and after the full level random vibration test a 1/4 g sine survey shall be performed from 5 Hz to 2000 Hz at 4 octaves per minute with a 3 g limit in the lateral axis and a 4.5 g limit in the axial axis.

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16 Burst Tank Pictures