There Was a Strange Sound Coming From Starliner. It Was Caused by a Speaker in the Capsule

The Starliner spacecraft is pictured docked with the Harmony module at the International Space Station high above the Mediterranean Sea. Credit: NASA

As part of the Commercial Crew Program (CCP), NASA contracted with commercial space partners to develop crew-capable spacecraft to restore domestic launch capability to U.S. soil. In addition to SpaceX’s Crew Dragon vehicle, which was validated in 2020 and has been transporting crews to the International Space Station (ISS) ever since. Concurrently, Boeing developed the CT-100 Starliner, which has suffered a seemingly endless string of technical issues and delays. After undergoing a long checklist of fixes, the Starliner completed its first orbital flight test (OFT-1) in May 2022.

The Starliner then made its first crewed flight to the ISS on June 5th, 2024, carrying two astronauts – Butch Wilmore and Sunita Williams. Unfortunately, malfunctions with the spacecraft’s RCS thrusters have forced it to remain in orbit until the necessary fixes were made. In addition to its thrusters, astronaut Butch Wilmore identified a strange pulsing sound coming from the Starliner crew capsule. That sound has since been identified as feedback from one of the capsule’s speakers, apparently due to an audio configuration between the ISS and Starliner.

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Starliner Finally Launches, Carrying Two Astronauts Into Orbit

Boeing's CTS-100 Starliner taking off from Cape Canaveral, Florida, on June 5th, 2024. Credit: NASA

After many delays and two scrubbed launch attempts, Boeing’s CST-100 Starliner successfully launched earlier today! The Crewed Flight Test (CFT) took off from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida, at 10:52 a.m. EDT (07:52 PDT) atop a ULA Atlas V rocket. For this mission, the capsule is carrying two NASA astronauts: Barry “Butch” Wilmore (commander) and Sunita “Suni” Williams (pilot). They are expected to reach the International Space Station (ISS) at 12:15 p.m. EDT (09:15 a.m. PDT) on Thursday, June 6th.

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The Astronauts who Would Have Tested Starliner Have Been Reassigned to an Upcoming SpaceX Crew Dragon Launch

NASA crew members of the SpaceX Crew-5 mission to the International Space Station. Pictured from left are NASA astronauts Nicole Mann and Josh Cassada. Credits: NASA

In 2011, NASA announced a bold new program to leverage partnerships between the government and the commercial space sector to restore domestic launch capability. As part of the Commercial Crew Program (CCP), NASA selected Boeing and SpaceX to develop next-generation crew-rated capsules that would transport astronauts and payloads to International Space Station (ISS) and other locations in Low-Earth Orbit (LEO).

While SpaceX has managed to meet all the requirements of the CCP with their Crew Dragon module, Boeing’s Starliner has experienced technical problems and several delays. With the latest delay (caused by the ISS being temporarily pushed out of its orbit), NASA has decided to reassign the astronauts that were scheduled to take the Starliner on its maiden crewed flight (Starliner-1) to the next crewed flight of the SpaceX Crew Dragon to the ISS (Crew-5).

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Russia’s new Module Kicks the Station out of Position, Causes a Delay for Starliner

An artist's illustration of Boeing's CST-100 Starliner spacecraft in orbit. Credit: Boeing

On July 28th, the International Space Station (ISS) suffered a mishap after a new Russian module (named Nauka) fired its thrusters just hours after arriving. As a result, the entire station was temporarily pushed out of position, forcibly delaying the Orbital Flight Test-2 (OFT-2) mission. This would have been Boeing’s CT-100 Starliner’s second attempt to rendezvous with the ISS as part of NASA’s Commercial Crew Program (CCP).

The ISS managed to correct its orbit shortly thereafter, while the OFT-2 launch was delayed until the next available opportunity (Wednesday, Aug. 4th). Unfortunately, the mission was delayed again due to an issue with one of the valves on the spacecraft’s propulsion system. This prompted the ground crews to move the Starliner and Atlas V launch vehicle back into Vertical Integration Facility (VIF), so they can look for the source of the problem more closely.

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NASA Astronauts are Back on Earth After a Successful Crew Dragon Splashdown

NASA astronauts Robert Behnken, left, and Douglas Hurley are seen inside the SpaceX Crew Dragon Endeavour spacecraft onboard the SpaceX GO Navigator recovery ship shortly after having landed in the Gulf of Mexico off the coast of Pensacola, Florida, Sunday, Aug. 2, 2020. The Demo-2 test flight for NASA's Commercial Crew Program was the first to deliver astronauts to the International Space Station and return them safely to Earth onboard a commercially built and operated spacecraft. Behnken and Hurley returned after spending 64 days in space. Credits: NASA/Bill Ingalls

On Sunday, August 2nd, astronauts Robert Behnken and Douglas Hurley splashed down with their Crew Dragon spacecraft (Endeavour) in the Gulf of Mexico. This brought their historic mission (Demo-2) to a close and marked the beginning of a new era in space exploration. For the first time in almost ten years, astronauts bound for the ISS had been launched from American soil – effectively restoring domestic launch capability to the US.

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Astronauts Come Back to Earth on August 2nd, Completing the Full Crew Dragon Test

On Monday, March 30, 2020 at a SpaceX processing facility on Cape Canaveral Air Force Station in Florida, SpaceX successfully completed a fully integrated test of critical crew flight hardware ahead of Crew Dragon’s second demonstration mission to the International Space Station for NASA's Commercial Crew Program; the first flight test with astronauts onboard the spacecraft. NASA astronauts Bob Behnken and Doug Hurley participated in the test, which included flight suit leak checks, spacecraft sound verification, display panel and cargo bin inspections, seat hardware rotations, and more.

On May 30th, SpaceX and NASA made history when a Crew Dragon spacecraft carrying two astronauts (Robert Behnken and Douglas Hurley) launched atop a Falcon 9 rocket and rendezvoused with the International Space Station (ISS). With this one flight, NASA and SpaceX demonstrated that the US once again has domestic launch capability, something they have not enjoyed since the retirement of the Space Shuttle in 2011.

In one week, Sunday, August 2nd, Robert and Douglas will be returning to Earth using the same Crew Dragon spacecraft (named Endeavour) that took them to the ISS. This is the most crucial part of Demo-2 flight, where the spacecraft is tasked with bringing the astronauts home, safe and sound. As you can imagine, there are a lot of people who are understandably nervous, not the least of which is SpaceX founder Elon Musk.

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NASA has a Pretty Big Checklist for Boeing to Fix on Starliner

An artist's illustration of Boeing's CST-100 Starliner spacecraft in orbit. Credit: Boeing

In 2014, NASA contracted two major aerospace companies (Boeing and SpaceX) to help them restore domestic launch capability to the United States. As part of the Commercial Crew Program (CCE), Boeing and SpaceX developed the CST-100 Starliner the Crew Dragon spacecraft, respectively. But whereas the Crew Dragon finished testing and even carried astronauts to the ISS, the Starliner met with some problems.

During its first uncrewed test flight – Orbital Flight Test-1 (OFT-1) – in December 2019, the Starliner experienced some failures that prevented it from docking with the ISS. After a thorough investigation, the joint NASA-Boeing Independent Review team has completed its final assessment and identified 80 areas where corrections need to be made before the Starliner can conduct another orbital flight test.

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NASA Changes its Mind. It Will be Using Previously Flown Crew Dragons and Falcon 9

Credit: SpaceX

For the purpose of restoring domestic launch capability to US soil, NASA launched the Commercial Crew Program (CCP) in 2010. Alongside its commercial partners, Boeing and SpaceX, the focus of this program has been to develop crew-capable spacecraft that could deliver payloads and astronauts to the International Space Station (ISS), something NASA has been unable to do since the retirement of the Space Shuttle in 2011.

On May 30th, 2020, the CCP fulfilled its purpose as SpaceX’s Crew Dragon spacecraft was launched atop a Falcon 9 rocket and successfully delivered two astronauts (Robert Behnken and Douglas Hurley) to the ISS. Looking ahead, NASA and SpaceX have modified their contract agreement, which gives the company permission to use previously-flown Crew Dragon spacecraft and Falcon 9 boosters to send NASA astronauts to the ISS.

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NASA tells Boeing to Make 61 Corrective Actions to Starliner Before the Program can Continue

Credit: NASA

With the retirement of the Space Shuttle in 2011, NASA has become dependent on its Russian counterparts to send and return astronauts to the International Space Station (ISS). Hoping to restore domestic launch capability to American soil, NASA has contracted with aerospace developers like SpaceX and Boeing to develop crew-capable spacecraft, as part of their Commercial Crew Program (CCP).

After years of development, Boeing managed to get their CST-100 Starliner ready for its first uncrewed test flight on December 20th, 2019. Unfortunately, a hiccup occurred during the mission that prevented the spacecraft docking with the ISS. After an independent review of the mission, NASA and Boeing have determined that 61 corrective actions need to be taken before the Starliner can fly again.

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Finally! We get to See a View From Inside Boeing’s Starliner During its First Flight

Boeing's Stariner atop a United Launch Alliance (ULA) Atlas V rocket. Credit: NASA

In 2014, Boeing was awarded a contract through NASA’s Commercial Crew Development (CCDev) program to provide commercial launch services to the International Space Station (ISS). To this end, they have been busy developing the CST-100 Starliner, a space capsule that will be able to deliver cargo and crews of up to 7 astronauts to the ISS. On December 20th, 2019, the Starliner passed a major milestone when it conducted an uncrewed test.

While an error prevented this Starliner (designated Calypso) from docking with the ISS as planned, the space capsule still managed to make it to space and land safely near White Sands, New Mexico. This makes it the first crew capsule to touchdown on land in the United States. To celebrate this accomplishment, Boeing recently released a highlight reel of footage taken by cameras inside the Calypso during the flight test.

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