Orion Conducts Return Powered Flyby – Artemis

Author: Yuvi December 6, 2022

On Dec. 5, 2022, Orion completed the return powered flyby burn, committing the spacecraft to a Dec. 11 splashdown in the Pacific Ocean.

NASA’s Orion spacecraft is on course for its return to Earth on Sunday, Dec. 11. The spacecraft made its second and final close approach to the Moon at 10:43 am CST Monday, Dec. 5, just before its return powered flyby burn, passing 80.6 miles above the lunar surface.

The burn, which used the spacecraft’s main engine on the European-built service module, lasted 3 minutes, 27 seconds, and changed the spacecraft’s velocity by about 655 mph (961 feet per second). It was the final major engine maneuver of the flight test.

“Orion is heading home! Today the team achieved another momentous accomplishment, flying Orion just 80 miles from the surface of the Moon. The lunar flyby enabled the spacecraft to harness the Moon’s gravity and slingshot it back toward Earth for splashdown,” said Administrator Bill Nelson. “When Orion re-enters Earth’s atmosphere in just a few days, it will come back hotter and faster than ever before – the ultimate test before we put astronauts on board. Next up, re-entry!”

Several hours before the lunar flyby, the spacecraft performed a trajectory correction burn at 4:43 am CST using the reaction control system thrusters on the service module. The burn lasted 20.1 seconds and changed the velocity of the spacecraft by 1.39 mph (2.04 feet per second).

The mission management team convened and polled “go” to deploy recovery assets off the coast of California ahead of Orion’s splashdown on Dec. 11. As soon as Orion splashes down, a team of divers, engineers, and technicians will depart the ship on small boats and arrive at the capsule. Once there, they will secure it and prepare to tow it into the back of the ship, known as the well deck. The divers will attach a cable to pull the spacecraft into the ship, called the winch line, and up to four additional tending lines to attach points on the spacecraft. The winch will pull Orion into a specially designed cradle inside the ship’s well deck and the other lines will control the spacecraft’s motion. Once Orion is positioned above the cradle assembly, the well deck will be drained and Orion will be secured on the cradle.

“Last week, we completed our final rehearsal with the USS Portland, which will be our recovery ship for Artemis I,” said Melissa Jones, landing and recovery director, NASA’s Kennedy Space Center. “We had a great three days working with them to refine our procedures and integrate our teams so we can meet the objectives of recovering the Orion spacecraft.”

Orion has used approximately 8,050 pounds of propellant during Artemis I, which is 180 pounds less than expected prelaunch. There are 2,075 pounds of margin available over what was planned for the mission, a 165-pound increase.

As of 5:29 pm CST on Dec. 5, Orion was traveling 244,629 miles from Earth and 16,581 miles from the Moon, cruising at 668 mph.

NASA Television and the agency’s website will resume live coverage of Orion’s journey at 9 a.m. Tuesday.

As Orion leaves the lunar sphere of influence for the final time, watch NASA astronaut Thomas Marshburn read the children’s book Goodnight Moon from space during his expedition aboard the International Space Station as part of a collaboration with Crayola Education to bring stories and the unique teachings of space to life with art and creativity.

Images are sent down to Earth, and uploaded to NASA’s Johnson Space Center Flickr account and Image and Video Library. When bandwidth allows, views of the mission will be available in real-time via video stream.

Author: Yuvi

My name is Yuvi, I work as Sub Editor at newscinema.in

6 December, 2022, 8:02 am

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Tuesday, 6th December 2022

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