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NASA, SpaceX shoot crew dragon for critical March 2



NASA's NAS executives checked their flight readiness and cleared SpaceX to continue their work on the preparation of the Falcon 9 missile and Crew Dragon commercial voyage to launch on March 2 on an unassigned test flight to the International Space Station . Station. The long-awaited mission is an important milestone in NASA's $ 6.8 billion commercial program to exclude the agency from the Russian Soyuz spacecraft for the transportation of American and partner astronauts to and from the station.

If everything succeeds, NASA's two astronauts hope to fly aboard the "Crew's Dragon" spacecraft on its first Pilot Test Flight in July.

"This is more than a trial flight, it's really a Mission to the International Space Station, this is part of the" Commercial Crew "program, which will really prepare us for a … flight of the crew that is coming out later," said Bill Gerstenmeier , director of space flight at NASA headquarters on an unlicensed flight

"So this is absolutely critical the first step we are making when we move to the final return of the crew's ability to launch back to the US"

The ascent from the 39A's historic site is aimed at at 2:49:03 am, we are from the Sabbath, about the same m The Earth's rotational force moves the rocket to the space station's orbital plane, the only way that current missiles can meet an orbital target that's moving in at about fifty kilometers per second

Backup startup capabilities are available March 5 and 9 March, but after that, NASA would have to stand before the Russian Union Flight, scheduled for launch on March 1

4 on the ferry of cosmonaut Alexei Ovchinin, NASA flight engineers Nick Hague and Cristina Koch at the station.

  022219-dragon.jpg Impressions of the artist on the space spacecraft SpaceX Crew Dragon at the final approach to the International Space Station. The first non-demonstration test flight of the ship-ferry ship SpaceX is scheduled for take-off on March 2.

NASA


Ovchinin and The Hague suffered a serious failure of Booster Soyuz during their first launch in October last year, but the capsule and crew landed at a distance of about 250 miles from the launch pad in Kazakhstan. The Russian space agency corrected this problem, revised the launch schedule, and Koch, who had already been trained on the flight, was added to the mission.

In any case, NASA managers who visit the FRR on Friday in the Kennedy Space Center have considered the launch processing to date and the status of the remaining "open" items that must be resolved or rejected before the flight, and those that can be postponed in the near future.

Among the topics discussed was a parachuting crew system and testing for use in future pilot missions dealing with temperature problems with maneuvering caps engines and the status of processed high pressure helium cylinders known as COPVs that are immersed in super -cold liquid oxygen inside the Falcon 9.

Problems with an earlier version of the tank were charged with an exciting blast on Falcon 9 on the site in 2016. The tricot holding the tank in place failed, causing the destruction of the cargo ship with the dragon that was connected to the station.

Questions for the Crew Dragon mission – an understanding of the physics that led to an explosion on the site and the belief that the redesigned tanks, known as the COPV 2.0 version, are not vulnerable to the same failure mode.

"One of the things in which a composite pressure vessel has (are) fibers that are twisted together," Gerstenmeyer said. "As it is, they can break and, as they break, they can potentially generate heat, if they can generate enough heat in the oxygen medium, they can be a source of ignition."

"Now we are returning and we find that this is a violation so unlikely that this is not anxiety. "

One issue that needs to be addressed in the near future is concerned with Russia's concerns about the control systems and safety on board the Dragon of the crew that will control. The final approach of the spacecraft to the space station

Gerstenmeier stated that European, Japanese and Russian spacecrafts that meet the station usually carry independent systems that can interrupt the approach in the case of a massive accident on a computer that can leave ship in collision Usually with a laboratory. The crew's dragon rests on the redundancy in the primary computer.

and response to various failures to make sure that computers do all the right things that we do not fall into a situation where, in fact, a vehicle is dead or sleeping, and then just continues its approach and is faced with station, "said Gerstenmeyer. ] "This is the main concern raised by the Russians, why there is no separate system or a separate window to provide this backup?" We believe that we have a sufficient justification for this. "

Gerstenmeier said that such technical issues are not unusual in the development of human-assessed spacecrafts and is part of the Demo 1 mission," we have not installed a common envelope, where some of

"But we know that the hardware The security is pretty good to go through this demonstration flight, "he said.

Assuming that demonstration 1 removes the 2nd of March, as it is now planned, the "Dragon Crew" spacecraft will carry out an autonomous date, catching the space station the day after launching and moving to the docking station at the front of the laboratory, the same as ever Attending space shuttles, around 6 am on March 3.

The crew of the station – Russian commander Oleg Kononenko, Canadian physician astronaut David Saint-Jacques and NASA flig ht engineer Ann McClain – will open manholes and inspect a new spacecraft within hours of docking.

  022219-f9-dragon.jpg

SpaceX


The flight plan requires that the dragon 1 crew was shown on March 8 and returned to the Atlantic Ocean, 230 miles east of Cape Canaveral. SpaceX Recovery Commands, located near, pull the capsule onto the ship and pull it back to Port Canaveral for detailed field inspections. Astronauts Robert Becken and Douglas Hurley hope that this summer they will strike at the "Dragon Crew" to launch the first launch of American astronauts aboard an American rocket from the American soil since the shuttle program ended in July 2011.

Development of a Boeing Capsule, known as the CST-100 Starliner, scheduled for an unsigned launch at the top of the United Launch Alliance Atlas 5 later this spring. The first Starliner flight, carried by Boeing astronaut Christopher Ferguson and NASA crew Nicole Mann and Mike Fincke, is scheduled for autumn timeframe.

If these flights are good, US flight operations of the rotation of the crew can begin by the end of the year.

The latest contract Soyuz US flight is scheduled for launch in July. Considering the constant possibility of unexpected problems with the ships of commercial crews, NASA is studying the possibility of acquiring two additional Soyuz seats, one for use in the fall, and another in the spring of next year.

SpaceX currently holds NASA contracts worth $ 3.04 billion for 20 flights to the space station and another contract for an uncertain amount of at least six additional flights by 2024.

SpaceX also has NASA's $ 2.6 billion contract for the construction and launch of a pilot version of its Dragon Capsule. Boeing received a $ 4.2 billion contract for the construction of the CST-100.


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