Accion Systems Propellant Tank Testing Results

0987-EX-CN-2018 Text Documents

Tyvak Nano-Satellite Systems

2019-03-28ELS_226414

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: March 18th, 2019 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 (all hardware listed below Date contained a sublimation (yyyy/mm/dd) barrier) Lifetime Test Thruster performance Verify successful tank 1 microtorr vacuum -Bi-polar 2018/02/16 TILE 50 Qualification Tank SN02 PASS – test under vacuum vacuum pump-down and operation? successful bi- thruster lifetime ion -Propellant polar emission test leaks? operation, no leaks detected Launch Vibration v 3-axis, random vibration Verify system can operate Qualification level: Propellant 2017/12/20 TILE 500 Prototype Tank 02 PASS – no nominally after launch 14.1 grms per leaks? leaks detected vibration NASA-GSFC-700A Humidity Exposure Long duration/high Verify propellant water Qualification level: Propellant 2018/05/23 TILE 500 Prototype Tank 02 PASS – no Test vi humidity exposure absorption does NOT 99%, 10 days leaks? leaks detected cause liquid leaking Thermal Vacuum Thermal stress test post- Verify the system has no Qualification level: - Propellant 2018/05/29 TILE 500 Prototype Tank 02 PASS – no Survivable vibration workmanship flaws and 30 C to +90 C, <10 leaks? leaks detected Temperature Cycling functions nominally after microtorr thermal cycling Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant 2018/06/06 TILE 500 Qualification Tank SN03 PASS – no humidity exposure absorption does NOT 99%, 15 days leaks? leaks detected cause liquid leaking Launch Vibration + 3-axis, random vibration Verify system can operate Qualification level: Propellant 2018/06/07 TILE 500 Qualification Tank SN03 PASS – no Depressurization while depressurizing per nominally after exposure 14.1 grms per leaks? leaks detected Falcon 9 launch pressure to vibration during NASA-GSFC-700A profile depressurization Thermal Vacuum Thermal stress test post- Verify the system has no Qualification level: Propellant 2018/06/27 TILE 500 Qualification Tank SN03 PASS – no Survivable vibration workmanship flaws and -30C to +90 C, <10 leaks? 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 (all hardware listed below Date contained a sublimation (yyyy/mm/dd) barrier) Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant 2018/06/06 TILE 500 Qualification Tank SN04 PASS – no humidity exposure absorption does NOT 99%, 36 days leaks? leaks detected cause liquid leaking Launch Vibration + 3-axis, random vibration Verify system can operate Qualification level: Propellant 2018/06/26 TILE 500 Qualification Tank SN04 PASS – no Depressurization while depressurizing per nominally after exposure 14.1 grms per leaks? leaks detected Falcon 9 launch pressure to vibration during NASA-GSFC-700A profile depressurization Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant 2018/07/24 TILE 500 Qualification Tank SN05 PASS – no humidity exposure absorption does NOT 99%, 96 days leaks? leaks detected cause liquid leaking Launch Vibration + 3-axis, random vibration Verify system can operate Qualification level: Propellant 2018/05/03 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid (worst case) nominally after exposure 14.1 grms per leaks? leaks detected depressurizing) to vibration during NASA-GSFC-700A depressurization Launch Vibration + Worst case axis, random Verify system can operate Qualification level: Propellant 2018/05/04 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly nominally after exposure 14.1 grms per leaks? leaks detected depressurizing) depressurizing to vibration during NASA-GSFC-700A Run 1 of 4 vii depressurization Launch Vibration + Worst case axis, random Verify system can operate Qualification level: Propellant 2018/05/04 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly nominally after exposure 14.1 grms per leaks? leaks detected depressurizing) repeat depressurizing to vibration during NASA-GSFC-700A Run 2 of 4 depressurization Launch Vibration + Worst case axis, random Verify system can operate Qualification level: Propellant 2018/05/04 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid vibration while rapidly nominally after exposure 14.1 grms per leaks? leaks detected depressurizing) repeat depressurizing to vibration during NASA-GSFC-700A Run 3 of 4 depressurization Launch Vibration + Worst case axis, long Verify system can operate NASA-GSFC-700A Propellant 2018/05/04 TILE 500 Qualification Tank SN05 PASS – no Depressurization (long duration, random nominally after exposure Qualification level: leaks? leaks detected duration + rapid vibration while rapidly to vibration during +20% grms & depressurizing) repeat depressurizing depressurization +100% duration Run 4 of 4 Launch Vibration + Worst case Verify system can operate Qualification level: Propellant 2018/05/29 TILE 500 Qualification Tank SN05 PASS – no Depressurization (rapid axis/orientation, random nominally after exposure 14.1 grms per leaks? leaks detected depressurizing) vibration while rapidly to vibration during NASA-GSFC-700A depressurizing depressurization Humidity Exposure Test Long duration/high Verify propellant water Qualification level: Propellant 2018/03/07 TILE Qualification Tank SN01 PASS – no humidity exposure absorption does NOT 99%, 12+ days leaks? thru thru SN40 leaks detected cause liquid leaking 2018/06/20 3

Accion Systems Inc. www.accion-systems.com 529 Main Street, Suite 114 ∙ Boston ∙ MA 02129 Phone 617-500-2563 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 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: 2019-03-18 14:30:22
Document Modified: 2019-03-18 14:30:22
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