The global system crisis ends with the launch of Artemis 1 final issue – Spaceflight Now

NASA’s Space Launch System moon rocket landed in Class 39B on Sunday, some time after NASA launched a planned cryogenic test. Found: Stephen Clark / Spaceflight Now

NASA astronauts canceled plans to launch cold ice and water oxygen into the first spacecraft of the Space Launch System moon rocket on Sunday for a numerical costume exercise, giving time for earthworms to solve problems with the fans used to ventilate the giant rocket. telephone booth at the Kennedy Space Center.

The training session, called the blue dress rehearsal, began on Friday and is expected to eliminate cryogenic launchers in the 322-foot-high (98-meter) Space Launch System rocket Sunday on Sunday. beginning class 39B.

But the SLS broadcaster cut the comparison number just before noon EDT (1600 GMT), just before the launch. The count was adjourned early Sunday morning while the advertising team evaluated problems with the fans that needed to be pressed, or the melting down of the telephone release tower.

Fans ventilate the air conditioner to ensure that no harmful gases build up during tanking, reducing the risk of fire or other hazards. others, such as Charlie Blackwell-Thompson, NASA’s Artemis director.

Some of the fans had problems early Sunday morning, so officials stopped counting to allow a team to return to the starting line to fix the problem. The release team changed a receiver and prepared to continue the count, but the second had another problem, Blackwell-Thompson told reporters Sunday evening.

“The purpose of that pressure is to prevent the entry of harmful gases during the attack, so it provides good pressure,” he said. “So, if you get a leak or some kind of damage off the board that you don’t find, those gases get into those areas and can cause a fire.

So we decided we wanted to really understand (the cruise problems), it was given the first time the car was loaded, and we decided to stand down to get into an arrangement to go to trouble, then get ready. run again tomorrow, ”Blackwell-Thompson said.

The phone launcher is 370 feet (113 meters) high, with the umbilical arms that can be retracted to navigate the gases and propellers to the rocket, and the team’s arm that reaches the targets. astronauts board the Orion spacecraft for the upcoming Artemis moon missions.

The air conditioners are located in a building on the side of pad 39B, hundreds of feet away from the rocket and the telephone operator. The air is removed from the fans by melting the environmental protection system of the starting stage.

Blackwell-Thompson said the engineers did not believe the cause of the damage caused by the fans was related to the four electric motors seen within the boundary of pad 39B during the evening thunderstorm. of Saturday. However, the national team is working on the victims when he spoke to reporters on Sunday, and NASA officials are not sure why the problems occurred.

The engineers decided that neither the Space Launch System nor the earth’s equipment was connected to the electricity. Three of the strikes hit the flight deck’s lightning towers, and another struck the catenary’s lightning system used to release electricity from the rocket when it was seen on the deck.

NASA is testing the Launch Space System for its first test flight, known as Artemis 1. The computational training at Kennedy is a full -fledged activity for the launch day. When counting the last steps before leaving, the clock will stop at T-minus 9.3 seconds, before the main engine starts.

If the Earth teams at Kennedy can solve the night -time problems, NASA’s mission team will meet at 6 am EDT (1000 GMT) Monday to give a “go” and “no go” to start Of the attack.

The launch should begin immediately after 7 am EDT (1100 GMT) for the main base being built by Boeing, which is covered with orange insulation to prevent snow in. the outer skin of the stone.

This view of the Space Launch System in Table 39B shows the rocket’s telephoto tower (left) and the platform. Courtesy: NASA / Joel Kowsky

Liquid oxygen, dried at 297 degrees Fahrenheit (less than 183 degrees Celsius) will begin to attack first at the base level. Then, the hydrogen water, stored at a minimum of 423 degrees Fahrenheit (less than 253 degrees Celsius), begins to boil at the rocket’s main base at level 39B.

It takes about three hours to load liquid oxygen into the base base, and one and a half hours for liquid hydrogen. During the flight, the pilots will feed the rocket’s four large RS-25 engines, the rest of the car’s engine, to fire for more than eight minutes.

The launch team will then move on to inject hydrogen and oxygen into the cryogenic base of the rocket, powered by a single Aerojet Rocketdyne RL10 engine. Here’s a breakdown of the launchers that will be installed in Rocket Sunday:

Oxygen water is the basic level: 196,000 gallons

Hydrogen is the basic level: 537,000 gallons

• Upper water pressure: 5,000 gallons

• Hydrogen is the main source: 17,000 gallons

A 30-minute record was set when the 10-minute T-minus signal was calculated on Sunday evening. After a “go / no go” option before launching, NASA director Charlie Blackwell-Thompson will give permission for the clock to restart.

If all goes according to plan, the countdown will be recorded at a scheduled start time of 2:40 pm EDT (1840 GMT) Monday. During the last 10 minutes of the count, the main and high level of the propellant boxes will be taken to flight pressure, the actuators will be locked, and the rocket will be switched to internal power.

The count will be cut off at T-minus 33 minutes and repeat at a fixed T-minus 10 minutes. NASA’s advertising team is planning a second run in the final countdown after Sunday evening, ending a stalemate at T-minus 9.34 seconds, before the launch of the major spacecraft.

The main and high -altitude base will then be flushed with cryogenic propellers, and NASA engineers will evaluate the rocket’s performance during fabrication, before returning the rocket to space. Car Assembly for first testing and replacements.

NASA plans to announce a start date for the Artemis 1 mission after the blue cloth training is over. The starting dates are considered in June.

Mission Artemis 1 will send an Orion joint capsule into orbit around the moon, where the missionary power will fly the plane through a series of demonstrations before the astronauts take off the SLS flight. / The upcoming Orion, dubbed Artemis 2, is on a looping journey around the moon. .

The missions to come after Artemis 2 will try to land astronauts on the moon with a commercial lunar pilot, and build a mini-space center near the moon called Gateway.

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Follow Stephen Clark on Twitter: @ StephenClark1.

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