Accion Systems Testing Results

0254-EX-CN-2018 Text Documents

California Polytechnic State University

2018-08-29ELS_215034

Accion Systems Inc. www.accion-systems.com 529 Main Street, Suite 114 ∙ Boston ∙ MA 02129 Phone 617-500-2563 Accion Systems’ TILE Propellant Tank Environmental Testing From December 20th, 2017 to July 24th, 2018 Document release date: July 25th, 2018 Updated: August 21st, 2018 1

Accion Systems Inc. www.accion-systems.com 529 Main Street, Suite 114 ∙ Boston ∙ MA 02129 Phone 617-500-2563 Accion TILE Propellant Tank Testing i Order of qualification testing on any test hardware is always 1) humidity, 2) vibration and 3) thermal testing ii. Qualification vibration testing is always started immediately following humidity to ensure test hardware is fully saturated iii. All qualification-level vibration and thermal testing is done per NASA-GSFC-700A. Additionally, each test article is exposed to vacuum (depressurized from ambient pressure) multiple times throughout its test lifecycle and subsequently inspected for leaks. iv Tests in Table 1 are grouped by hardware designation and are not chronological. Table 1 List of TILE Propellant Tank Tests from December 20, 2017 to July 24, 2018 Tests Run Test Description Test Objective Test Levels Pass/Fail Test Hardware Tested Results Criteria Completion Date (yyyy/mm/dd) Lifetime Test Thruster performance Verify successful tank 1 microtorr -Bi-polar 2018/2/16 TILE 50 Qualification Tank SN02 PASS – test under vacuum vacuum pump-down and vacuum operation? successful bi- thruster lifetime ion -Propellant leaks? polar emission test operation, no leaks detected Launch Vibration v 3-axis, random Verify system can Qualification level: Propellant leaks? 2017/12/20 TILE 500 Prototype Tank 02 PASS – no vibration operate nominally after 14.1 grms per leaks detected launch vibration NASA-GSFC-700A Humidity Exposure Long duration/high Verify propellant water Qualification level: Propellant leaks? 2018/5/23 TILE 500 Prototype Tank 02 PASS – no Test vi humidity exposure absorption does NOT 99%, 10 days leaks detected cause liquid leaking Thermal Vacuum Thermal stress test Verify the system has no Qualification level: Propellant leaks? 2018/5/29 TILE 500 Prototype Tank 02 PASS – no Survivable post-vibration workmanship flaws and -30 C to +90 C, <10 leaks detected Temperature Cycling functions nominally after microtorr thermal cycling Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant leaks? 2018/6/6 TILE 500 Qualification Tank SN03 PASS – no humidity exposure absorption does NOT 99%, 15 days leaks detected cause liquid leaking Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/6/7 TILE 500 Qualification Tank SN03 PASS – no Depressurization vibration while operate nominally after 14.1 grms per leaks detected depressurizing per exposure to vibration NASA-GSFC-700A Falcon 9 launch during depressurization pressure profile Thermal Vacuum Thermal stress test Verify the system has no Qualification level: Propellant leaks? 2018/6/27 TILE 500 Qualification Tank SN03 PASS – no Survivable post-vibration workmanship flaws and -30C to +90 C, <10 leaks detected Temperature Cycling functions nominally after microtorr thermal cycling 2

Accion Systems Inc. www.accion-systems.com 529 Main Street, Suite 114 ∙ Boston ∙ MA 02129 Phone 617-500-2563 Tests Run Test Description Test Objective Test Levels Pass/Fail Test Hardware Tested Results Criteria Completion Date (yyyy/mm/dd) Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant leaks? 2018/6/6 TILE 500 Qualification Tank SN04 PASS – no humidity exposure absorption does NOT 99%, 36 days leaks detected cause liquid leaking Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/6/26 TILE 500 Qualification Tank SN04 PASS – no Depressurization vibration while operate nominally after 14.1 grms per leaks detected depressurizing per exposure to vibration NASA-GSFC-700A Falcon 9 launch during depressurization pressure profile Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant leaks? 2018/7/24 TILE 500 Qualification Tank SN05 PASS – no humidity exposure absorption does NOT 99%, 96 days leaks detected cause liquid leaking Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/5/4 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly operate nominally after 14.1 grms per leaks detected depressurizing) depressurizing (worst exposure to vibration NASA-GSFC-700A Run 1 of 4 vii case) during depressurization Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/5/4 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly operate nominally after 14.1 grms per leaks detected depressurizing) depressurizing (worst exposure to vibration NASA-GSFC-700A Run 2 of 4 case) during depressurization Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/5/4 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly operate nominally after 14.1 grms per leaks detected depressurizing) depressurizing (worst exposure to vibration NASA-GSFC-700A Run 3 of 4 case) during depressurization Launch Vibration + 3-axis, random Verify system can Qualification level: Propellant leaks? 2018/5/4 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly operate nominally after 14.1 grms per leaks detected depressurizing) depressurizing (worst exposure to vibration NASA-GSFC-700A Run 4 of 4 case) during depressurization Launch Vibration + 3-axis, long duration, Verify system can NASA-GSFC-700A Propellant leaks? 2018/5/4 TILE 500 Qualification Tank SN05 PASS – no Depressurization (long random vibration operate nominally after Qualification level: leaks detected duration + rapid while rapidly exposure to vibration +20% grms & depressurizing) depressurizing during depressurization +100% duration (extreme worst case) Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant leaks? 2018/3/7 thru TILE Qualification Tank SN1 thru PASS – no humidity exposure absorption does NOT 99%, 12+ days 2018/6/20 SN40 leaks detected cause liquid leaking i Inspection occurs pre and post test; each design is inspected before and after each test both visually and with use of leak detection equipment 3

Accion Systems Inc. www.accion-systems.com 529 Main Street, Suite 114 ∙ Boston ∙ MA 02129 Phone 617-500-2563 ii Deviation from this order of testing is acceptable only if supported by engineering analysis iii See above (ii) iv Multiple depressurizations: the test articles are placed inside vacuum chambers and exposed to at least millitorr pressures during a depressurization v Test done out of order as developmental test to qualification levels vi During humidity testing, the test hardware is exposed to high humidity continuously per the levels specified except for mass measurements taken outside the chamber periodically vii TILE 500 Qualification Tank SN05 was subjected to multiple, harsh (rapid) depressurization profiles and an extended duration vibration test for design verification 4


Document Created: 2018-08-21 18:47:49
Document Modified: 2018-08-21 18:47:49
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