Rideshare payload user’s guide october 2022
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- 4.1.4.4.1 Verification for Non-US DOT Vessels that Meet the 15% Rule
| 4.1.4.4 NON-US DOT PRESSURE VESSELS Any pressure vessels that are not US DOT classified require a SpaceX review of qualification and acceptance testing and must meet the following requirements No Type 2,3,4,5 pressurized-structure tanks (reference Section 4.1.4), tanks where non-pressure loading makes up more than 15% of maximum combined flight stress (15% Rule. No pressure tanks that require pressure stabilization to hold external structural load. Pressurization state of the tank must not change between the time that the Payload is mated to Launch Vehicle hardware and deployment from the Launch Vehicle, as part of the overall Payload inhibit strategy. Qualification must include all testing per applicable AIAA document listed in Section 4.1.4 based on pressure vessel type, and AFSPC 91-710 Section 12. Pressure vessels must have a contingency pressure relief valve to vent pressure above personnel safe MEOP while in ground operations. Pressure vessels must hold burst factors of safety on pressure per applicable AIAA document listed in Section 4.1.4 based on pressure vessel type not below factors defined in Section 3.4.3 or overall design factors of safety defined in Section 4.1.1 on all combined loading cases. Vessels that carry significant loads beyond pressure (pressurized-structure tanks, secondary structure mounts) must include combined loading in qualification testing and demonstrate testing to the combined factors of safety defined in Section 4.1.1. RIDESHARE PAYLOAD USER’S GUIDE © Space Exploration Technologies Corp. All rights reserved. No US. Export Controlled Data. 25 4.1.4.4.1 Verification for Non-US DOT Vessels that Meet the 15% Rule Customer must provide the following Pressure vessel qualification testing including burst, cycle testing, residual vessel strength after cycle testing, and vibration testing. Acceptance testing strategy and per-vessel proof test. Combined structural loading analysis in SpaceX template for flight including all loading and material assumptions demonstrating that less than 15% of maximum flight stress is from mounting/external loads (to demonstrate that pressure-only testing is sufficient on the pressure vessel. Document detailing test-like-you-fly deviations between test and flight including rationale for acceptance. Download 2.78 Mb. Share with your friends:
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