Share the news to friends and circle of friends with wechat scanning QR code < / P > < p > on November 13. On August 3 this year, the interstellar glory hyperbola-1 remote five (sqx-1 Y5) carrier rocket was launched. During the flight, because the fairing was not separated, the satellite did not enter the predetermined orbit, and the flight test did not achieve the expected purpose < p > after the occurrence of flight failure, interstellar glory immediately established a joint failure investigation committee and failure Review Committee to thoroughly investigate the causes of flight failure. After more than 100 days of troubleshooting, StarCraft glory has completed all the work of fault zeroing, and organized and held the flight fault zeroing review meeting of sqx-1 Y5 launch vehicle in Beijing on November 13, 2021. The participating experts unanimously agreed and passed the zeroing review, realizing the zeroing closed loop < p > the fault investigation committee established a fault tree with "fairing not separated" as the top event, investigated 40 bottom events one by one, successively completed 6 special quality reviews, and carried out 10 verification tests and 2 fairing separation tests. Finally, the reason for the failure of the fairing of sqx-1 Y5 rocket was that during the final assembly, the silicone rubber at the longitudinal separation surface 5# or / and 6# separation bolt box cover of the fairing IV quadrant adhered to the wind deflector, resulting in the failure of the fairing to separate, resulting in the failure of the flight test to achieve the expected goal. The mechanism of this problem is clear, and the failure mode in flight is reproduced through ground test. (quiet) < / P > < p > < / P > < p > related entries: < / P > < p > return to zero: < / P > < p > < p > quality problem close loop in the aerospace field refers to the technical and management analysis of the causes and mechanisms of faults, accidents, defects and nonconformities in design, production, test and service, and the adoption of corrective and preventive measures, In order to fundamentally eliminate the problem and avoid the closed-loop activity of problem recurrence < p > zeroing is usually divided into technical zeroing and management zeroing. Technology zeroing is to find problems from technology, clarify the mechanism, solve problems and take one against three at the same time. Management zeroing is to find the weak link in management, distinguish responsibilities and improve rules < p > Technical zeroing requirements: accurate positioning, clear mechanism, recurrence of problems, limited measures and drawing inferences from one instance < p > management zeroing requirements: clear process, clear responsibility, implementation of measures, serious treatment and improvement of regulations. This is the famous "double five" in the aerospace industry < p > zeroing is regarded as an extremely valuable experience in the aerospace field. Those who have participated in the actual launch vehicle launch and model design, experienced failure and "zeroing" are extremely rare Aerospace talents
2023-03-22 10:04:46