Science & Technology

NASA’s Artemis SLS Moon Rocket Showed Excellent Performance – World’s Most Powerful Rocket

NASA’s Space Launch System rocket will launch with Orion atop it from Launch Complex 39B at NASA’s modernized spaceport at Kennedy Space Center in Florida. Credit: NASA

According to initial assessments by NASA, the Space Launch System (SLS) rocket performed with precision, meeting or exceeding all expectations during its debut launch on Artemis I. The world’s most powerful rocket set NASA’s Orion spacecraft on course for a journey beyond the Moon and back, and laying the foundation for the first mission with astronauts on Artemis II and humanity’s return to the lunar surface beginning with Artemis III.

On Wednesday, November 16, 2022, NASA’s Space Launch System rocket carrying the Orion spacecraft launches on the Artemis I flight test from Launch Complex 39B at NASA’s Kennedy Space Center in Florida. NASA’s Artemis I mission is the first integrated flight test of the agency’s deep space exploration systems: the Orion spacecraft, Space Launch System (SLS) rocket, and ground systems. SLS and Orion launched at 1:47 a.m. EST. Credit: NASA/Joel Kowsky

“The first launch of the Space Launch System rocket was simply eye-watering,” said Mike Sarafin, Artemis mission manager. “While our mission with Orion is still underway and we continue to learn over the course of our flight, the rocket’s systems performed as designed and as expected in every case.”

The twin solid rocket booster motors responsible for producing more than 7 million pounds of thrust at liftoff reached their performance target, helping the rocket and spacecraft travel more than 27 miles from its launch site at Kennedy Space Center in Florida and reaching a speed of about 4,000 mph in just over two minutes before the boosters separated. No issues were reported for any of the booster subsystems including its avionics and thrust vector control system used for steering.

Powered by four RS-25 engines and twin solid rocket boosters, NASA’s Space Launch System (SLS) rocket produces 8.8 million pounds of thrust to propel the agency’s Artemis missions to the Moon. Offering more payload mass, volume capability, and energy to speed missions through deep space, the SLS rocket is designed to be both flexible and evolvable to enable a variety of missions, including landing the first woman and the next man on the Moon by 2024. SLS, along with NASA’s Gateway in lunar orbit and the Orion spacecraft, is NASA’s backbone for NASA’s deep space exploration. It is the only rocket that can send Orion, astronauts, and supplies beyond Earth’s orbit to the Moon on a single mission. Credit: NASA/Bailey Collins

Analysis shows the rocket’s core stage and four RS-25 engines, which burned through the stage’s 735,000 gallons of propellants in just over eight minutes, met every expectation during launch as well as in the final minutes of the countdown before liftoff, when the flight computers and software are in control and many dynamic events involving pressurizing tanks, starting the engines, and igniting the boosters, happen in quick succession.

The mega Moon rocket delivered Orion within about three miles of its planned orbit altitude of 975 by 16 nautical miles, well within the planned range required for the mission, at a speed of approximately 17,500 mph. Analysis shows the rocket’s ascent and in-space software also performed as expected.

We need the biggest rocket stage ever built for the bold missions in deep space that NASA’s Space Launch System rocket will give us the capability to achieve. This infographic sums up everything you need to know about the SLS core stage, the 212-foot-tall stage that serves as the backbone of the most powerful rocket in the world. The core stage includes the liquid hydrogen tank and liquid oxygen tank that hold 733,000 gallons of propellant to power the stage’s four RS-25 engines needed for liftoff and the journey to Mars. Credit: NASA/MSFC

The interim cryogenic propulsion stage, the upper stage of the rocket used to perform two burns during the mission to first raise Orion’s orbit and then propel it toward the Moon, performed exactly as planned. The upper stage’s single RL10 engine, which has powered successful missions to every planet in the solar system and to interstellar space over its more than 50 years in operation, set a single-duration burn record, firing for more than 18 minutes to set Orion precisely on its multi-day outbound trek to intercept Earth’s nearest celestial neighbor.

Learn everything you need to know about the RS-25 Engines that help make SLS the most powerful rocket in the world. Credit: NASA/MSFC

“Performance was off by less than 0.3 percent in all cases across the board,” Sarafin said.

Engineers will continue conducting a more detailed analysis of Space Launch System performance over the next several months as the agency continues making progress in building and assembling elements for the rocket for Artemis II and beyond.

We need a bigger booster for the bold missions NASA’s Space Launch System rocket will give us the capability to achieve. This infographic sums up everything you need to know about the Space Launch System Solid Rocket Booster or SRB. The booster will use a 5-segment solid propellant motor, and the motor is the largest component of the booster. Credit: NASA/MSFC

“I’ve been privileged to lead the team which designed, built, tested, and now flown the Space Launch System rocket on its historic first flight, the Artemis I mission,” said John Honeycutt, SLS program manager at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “With this amazing Moon rocket, we’ve laid the foundation for Artemis and for our long-term presence at the Moon. The performance of the rocket and the team supporting its maiden voyage was simply outstanding.”

The SLS Program is managed by Marshall, and many parts of the rocket were built and tested at Marshall and at NASA’s Michoud Assembly Facility in New Orleans, as well as at Stennis Space Center in Bay St. Louis, Mississippi. Engineers at Marshall supported the Artemis I launch in real-time from the center’s SLS Engineering Support Center as well as in the Launch Control Center at NASA’s Kennedy Space Center in Florida.

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