Today is space with you [Issue 1429]
For Chinese astronauts, March 22, 1992, is a day that will never be forgotten.
30 years ago today, CCTV broadcast the "Australian Star" mission of changer bundle of rockets, but when the ignition password was issued, hundreds of millions of viewers saw such a picture: huge smoke rose up, and the rocket did not take off...
Afterwards, it was found that it was only because an arc of excess aluminum chips of about two centimeters was connected to the shutdown contact of the booster, resulting in the booster shutting down immediately after ignition, and the thrust measured by the main computer of the rocket was not enough, so the engine implemented an emergency shutdown after 7 seconds, resulting in the launch failure.
On March 22, 1994, the former China Aerospace Industry Corporation decided to designate March 22 of each year as Aerospace Quality Day to remind us of the memory and draw strength from past failures and setbacks.
Quality is life, quality is the odds. Today, let's talk about the quality of spaceflight.
You must have heard the story of "strict and meticulous", and the story of "little white hair" is a model of strictness and meticulousness.
During the "two-bomb combination" test in 1966, during the single internal and external examination, the operator Wang Changshan found that there was a small white hair about 5 mm long in the fifth section of the No. 24 plug inside the projectile.
How small is it? "You can't see it without a magnifying glass."
However, in Wang Changshan's view, any hidden danger that may affect the task cannot be let go. He began to try to clip with tweezers and pick with wire, but repeated many times he could not take it out.
He thought of many ways, and finally he made a clever move, using a pig's bristle, and it took a lot of effort to pick out this almost invisible little white hair.
After Qian Xuesen, who was participating in the organization and leadership test at the launch site, learned about it, he solemnly asked for this little white hair, carefully wrapped it up, and said to everyone: "I want to take it back to Beijing, this is a typical example of a meticulous work style, and every scientific and technological cadre should be educated." ”
Amplifying any tiny anomalies that have been discovered, without any hidden dangers, has now become the most basic principle of space launch.
On the evening of June 15, 2020, the Beidou final battle, which was scheduled for the morning of June 16, was scheduled to carry out a negative 12-hour pre-launch function inspection, however, a technical problem "unexpectedly encountered", resulting in the rocket's pressure data falling below the design index requirements. Subsequently, the launch team began to troubleshoot the problem and found the fault point in a short time.
After the rocket was discharged, the indicators returned to normal. However, in response to this technical problem, the Beidou Engineering Command conducted careful research and discussion, and finally made a decision - to postpone the launch mission.
Beidou networking ended, the whole country attracted attention, at this time to press the "pause button" is not an easy choice, the rocket that has been refueled, may have to carry out the largest propellant release and refill work unprecedented in history.
But such decisions respect science. In the next few days, with the coordination of various departments, the problem was completed and zeroed, and on June 22, the rocket carried out the refueling of conventional fuel, and successfully completed the launch on June 23.
▲ 8 minutes review of the 7 days postponed by the Big Dipper Closing Star
Speaking of "zeroing", the "zeroing" of the aerospace front is not only a kind of "zeroing" in mentality, but also a kind of closed-loop management activity that uses appropriate methods from the technical and management aspects to analyze the causes and mechanisms of problems from the technical and management aspects, and takes corrective and preventive measures to solve the quality problems that have occurred.
This looks more professional and difficult to understand, some people have used the camera analogy, "zero" is to find out that the camera is broken, to find out who is bad, how to shoot bad, what reason to shoot bad, how to solve the bad, to form rules and regulations, every one of them shoot like this, to ensure that there is no problem.
After "returning to zero" is a new starting point, after "returning to zero" we do not start from scratch, but from experience, starting from a new cognitive boundary.
To avoid passive "zeroing", we must keep in mind the quality motto, deeply rooted in the blood, and put in practice.
Aerospace quality is life
The quality of spaceflight never ends