Thursday, June 13, 2019

Orion Artemis 1 Service Module Completes Acoustic Tests, Solar Wings Installed


Orion’s European built service module for NASA’s Artemis 1 mission completed acoustic testing inside the Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on May 25, 2019.  Photo credit: NASA/Frank Michaux   
Ken Kremer -- SpaceUpClose.com & RocketSTEM – 12 June 2019

CAPE CANAVERAL, FL - The European-built service module for NASA’s Orion crew spacecraft has completed acoustic testing inside the Operations and Checkout Building at NASA’s Kennedy Space Center in Florida as critical work continues apace to prepare the vehicle for launch on the Artemis 1 mission in late 2020.

NASA hopes to return humans to the surface of the Moon at the lunar south pole by 2024 on the Artemis 3 mission under new plans approved by the Trump Administration and announced by VP Mike Pence and NASA Administrator Jim Bridenstine. 

The acoustic testing on the combined Orion European Service Module (ESM)  and Crew Adapter Module was completed on May 25, 2019 after completing the installation of all four solar array wings on May 10.  

“The tests were the latest step in preparing for the agency’s first uncrewed flight test of Orion on the Space Launch System (SLS) rocket,” NASA officials said.

The acoustic tests – called the Direct-Field-Acoustic Testing (D-FAT) – are run to simulate the extreme noises of a rocket launch and ensure the spacecraft will survive a real launch on the SLS from KSC Launch Complex 39B.

For the D-FAT test the service and adapter modules are “surrounded by large speakers set at full blast to ensure the spacecraft survives the vibrations and loud noise generated from the Space Launch Systems rocket liftoff.”

Sound bombardment engineers are now running functional tests to determine whether the electronics are still working correctly.

“Technicians will analyze the data collected during the tests to check for flaws uncovered by the acoustic environment. During the testing, engineers secured the service module inside the test cell and then attached microphones, strain gauges and accelerometers to it. They conducted a series of five tests, with acoustic levels ranging from 128 to 140 decibels – as loud as a jet engine during takeoff." 
Moving the Orion service module for testing. On 29 April 2019 Orion’s Service Module moved to the lift station inside the assembly bay for installation and fastening of systems in preparation for Direct Field Acoustics Test. The Service Module moved down to the east end of the bay where it will be surrounded with speakers and exposed to the acoustic level that will be experienced in space. Credits: NASA
The cylindrically-shaped European Service Module ESM-1 is the critical ‘powerhouse’ element that will supply NASA’s human-rated Orion spacecraft with electricity, propulsion, thermal control, air and water and propel it on its first voyage to the Moon and 40,000 miles (64,000 km) beyond atop SLS-1 during Artemis-1 from KSC pad 39B.
ESA’s first European Service Module for NASA Orion crew capsule is unveiled at welcoming ceremony at Neil Armstrong Operations and Checkout building at NASA’s Kennedy Space Center on Nov. 16, 2018, including remarks by ESA Director General Jan Wörner.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The first European Service Module (ESM-1) built to power NASA’s Orion crew spacecraft for human voyages to deep space was unveiled at a welcoming ceremony held at NASA’s Kennedy Space Center (KSC) in Florida in November 2018 – see our photos – after being transported from Bremen, Germany where it was manufactured for ESA. 

ESA’s first European Service Module for NASA Orion crew capsule is unveiled at welcoming ceremony at Neil Armstrong Operations and Checkout building at NASA’s Kennedy Space Center on Nov. 16, 2018, including remarks by ESA Director General Jan Wörner.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The next step this month is for the team to carry out the propulsion functional test whereby “commands are sent to test the system and ensure everything interacts as needed” – but not actually fire the engines.

The propulsion test firings will be done later at NASA’s test facility in White Sands, New Mexico.

All four 7-meter long solar wings were removed following the D-Fat test conclusion. 

The next big milestone will be mating of the ESM with the Orion Artemis-1 Crew module in July into a unified 7.3 meter tall structure the size of a two-story house. 


Orion Artemis-1 crew module under construction at KSC. Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Thereafter the Orion Artemis -1 CM/ESM vehicle will be carefully loaded horizontally into the belly of the 'Super Guppy' - NASA's one of a kind, gorgeous hybrid aircraft. 

The Super Guppy will transport it from the Kennedy Space Center to NASA’s Plum Brook facility for critical thermal vacuum, acoustic, electromagnetic testing prior to the uncrewed lunar test flight. Launch on SLS-1 is scheduled for late 2020.
'Super Guppy' - NASA's one of a kind,gorgeous hybrid aircraft. Around July 2019 the  combined NASA Orion Crew Module EM-1 and European Service Module-1 will be loaded horizontally into belly of the behemoth and transported from the Kennedy Space Center to Plum Brook facility for critical thermal vacuum, acoustic, electromagnetic testing prior to lunar test flight. Launch on SLS-1 scheduled for late 2020.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com

The next test launch in the Orion program is slated for July 2 involving the Ascent Abort-2 test from pad 46 on Cape Canaveral Air Force Station. Watch for our upcoming coverage.

During the flight an Orion test article will launch on a Minotaur 4 booster to more than six miles in altitude, where Orion’s launch abort system (LAS) will pull the capsule and its crew away to safety in a split second in a simulated rocket emergency during ascent on the Space Launch System rocket.
Artemis 1 will be the first mission launching Orion on the SLS rocket from Kennedy’s Launch Pad 39B. The mission will take Orion thousands of miles past the Moon on an approximately three-week test flight. Orion will return to Earth and splashdown in the Pacific Ocean off the coast of California, where it will be retrieved and returned to Kennedy.
Artemis 1 mission graphic. Credit: NASA
Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics.
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Ken’s photos are for sale and he is available for lectures and outreach events

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