{"id":12620,"date":"2024-09-13T10:00:00","date_gmt":"2024-09-13T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=12620"},"modified":"2024-09-01T16:27:10","modified_gmt":"2024-09-01T16:27:10","slug":"stranded-boeing-starliner-astronauts-to-stay-six-more-months-in-space-what-this-means-for-the-future-of-commercial-spaceflight","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/stranded-boeing-starliner-astronauts-to-stay-six-more-months-in-space-what-this-means-for-the-future-of-commercial-spaceflight\/","title":{"rendered":"Stranded Boeing Starliner astronauts to stay six more months in space \u2013 what this means for the future of commercial spaceflight"},"content":{"rendered":"\n
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\n \n
\n The Boeing Starliner docked with the International Space Station on July 3 2024, during the latest mission.\n Nasa<\/a><\/span>\n <\/figcaption>\n <\/figure>\n\n Jacco van Loon<\/a>, Keele University<\/a><\/em><\/span>\n\n

Sunita Williams and Barry \u201cButch\u201d Wilmore must have heaved a sigh of relief when they opened the hatch and floated into the International Space Station (ISS)<\/a> on June 6 2024. It was the first time the Starliner spacecraft they arrived on had ever carried people. <\/p>\n\n

Built by aerospace manufacturing giant Boeing, Starliner had become the second commercial spacecraft to carry astronauts to the ISS after the Crew Dragon<\/a>, built by Elon Musk\u2019s company SpaceX, which has already completed eight crew transportation flights to the orbiting outpost. <\/p>\n\n

Nasa\u2019s decision more than a decade ago to offload crew transport<\/a> to private companies like SpaceX and Boeing was seen as a bold step. The private space sector is now booming, with fully private flights<\/a> to Earth orbit already happening, and plans for commercially funded space stations<\/a> in the pipeline.<\/p>\n\n

Wilmore and Williams had been expecting to travel back to Earth on Starliner just eight days after reaching the ISS. Little did they know that, more than two months later, they would still be up there<\/a>, waiting for Nasa and Boeing to complete a detailed analysis of whether it was safe to send them back on Starliner. <\/p>\n\n

On August 24<\/a>, the US space agency announced that it did not have enough confidence to send the two astronauts back on the Boeing spacecraft. So, what does this mean for the two astronauts, and for the future of commercial spaceflight?<\/p>\n\n

First of all, Williams and Wilmore are not in danger. They are safe inside the ISS, with plenty of food, clean water and air. They are now expected to stay on the ISS for eight months and return next year on a Crew Dragon spacecraft.<\/p>\n\n

\n \"Sunita\n
\n Sunita Williams and Butch Wilmore (centre) pose with astronauts Michael Barratt (left) and Tracy Dyson aboard the ISS.<\/span>\n Nasa<\/a><\/span>\n <\/figcaption>\n <\/figure>\n\n

This planned Dragon flight<\/a>, called Crew-9, will launch in September and return in February 2025. It may now carry only two rather than the intended four<\/a> astronauts up to the ISS, to make room for the two unexpected crew members on the way back.<\/p>\n\n

The fact that such an option is available is a triumph for commercial spaceflight. SpaceX has become a reliable choice for Nasa to ferry its astronauts to the ISS. In addition to the eight crew rotation flights to date, SpaceX has launched more than 20 uncrewed supply missions to the ISS since 2012. <\/p>\n\n\n\n

Following the loss of 14 astronauts in two Space Shuttle disasters \u2013 Challenger in 1986 and Columbia in 2003 \u2013 Nasa can ill afford more fatal accidents against the backdrop of a perilous financial landscape. This is why Nasa administrator Bill Nelson decided that Starliner would not carry the astronauts back to Earth.<\/p>\n\n

Starliner\u2019s first crewed flight to the ISS launched on June 5 2024<\/a>, having previously made two uncrewed test flights to it. This latest mission was plagued by helium leaks<\/a> \u2013 discovered both before launch and during flight \u2013 and malfunctioning thrusters, the engines used for manoeuvring Starliner in space. Helium is used to push propellant into Starliner\u2019s thrusters, so these malfunctions could have jeopardised manoeuvres to approach and dock with the ISS.<\/p>\n\n

Critical functions<\/h2>\n\n

The thrusters\u2019 correct function is also critical to ensuring Starliner\u2019s crew module, the part of the spacecraft in which astronauts travel, enters Earth\u2019s atmosphere at a safe angle. Re-enter too steeply and the spacecraft could disintegrate at a speed of 17,500 miles per hour. Enter at too shallow an angle and it could skim off the atmosphere into space again. <\/p>\n\n

For most of the mission, the crew module is attached to a service module<\/a> which supplies the power and houses the thrusters. Issues with the thrusters in Starliner\u2019s service module had already emerged during its uncrewed test flight in 2022<\/a>, which nevertheless successfully docked to the ISS. <\/p>\n\n

This followed a first test flight in 2019<\/a> which failed due to a combination of an onboard clock error and confused communication. In both cases, the crew module made it down to Earth in one piece.<\/p>\n\n\n\n

With astronauts aboard, however, Nasa officials were taking no chances. The uncrewed return of Starliner, scheduled for early September, will allow engineers on Earth to monitor the behaviour of the thrusters once more. They will also look out for potential issues related to the helium leaks. These are quite common in rockets, since helium atoms are very small and do not stick well to other atoms \u2013 meaning they can wriggle through tiny pores rather easily.<\/p>\n\n

Unfortunately, the service module separates from the crew module during the return to Earth, burning up in the atmosphere. So, it will not be possible to inspect the thrusters on the ground.<\/p>\n\n

Competitive field<\/h2>\n\n

Having been awarded US$4.2 billion (\u00a33.2 billion) by Nasa\u2019s Commercial Crew Program in 2014, Boeing has taken a decade to accomplish its first \u2013 ill-fated \u2013 crewed mission to the ISS, using a United Launch Alliance Atlas V rocket. SpaceX \u2013 on a US$2.6 billion (\u00a32 billion) contract from the same Nasa program \u2013 managed this feat faster, more cheaply (for Nasa at least), and more comprehensively. <\/p>\n\n

SpaceX has also managed to routinely return the first stage boosters from its Falcon 9 rocket from space<\/a> to the ground, landing them using engines in an upright position on a barge in the ocean.<\/p>\n\n

The Falcon 9 consists of two powered sections: the first-stage booster carries the second stage of the rocket to a predetermined altitude and speed. Returning the first stage allows it to be re-used, bringing down launch costs. Before SpaceX incorporated the technology for re-use, rocket stages were generally discarded.<\/p>\n\n

The company is also developing Starship<\/a>, which consists of a huge space vehicle intended to carry humans or cargo on missions to the Moon or Mars, as well as the most powerful rocket ever built.<\/p>\n\n

With other private companies such as Sierra Space and Blue Origin (Amazon founder Jeff Bezos\u2019s space company) also making big steps in the human spaceflight business, Boeing is facing strong competition. The company has also had to deal with heavy criticism following two fatal crashes<\/a> of Boeing 737 Max aircraft and a door blow-out<\/a> during a Boeing 737 Max 9 flight.<\/p>\n\n

However, SpaceX received unwelcome news on August 28 when a returning first-stage Falcon booster fell over and exploded<\/a>. The Federal Aviation Administration has now grounded all of its Falcon 9 rockets \u2013 one of which is meant to carry Crew-9 to the ISS in September.<\/p>\n\n

Above all, Nasa\u2019s decision to prioritise the safety of Williams and Wilmore, and to work with a commercial partner in finding a solution, is another example of giving the private space industry the confidence and trust required for commercial crewed spaceflight to keep expanding.<\/p>\n\n

It sends a message to all that trying something new does not necessarily mean being reckless. In this sense, it is a triumph of wisdom and caution.\"The<\/p>\n\n

Jacco van Loon<\/a>, Reader in Astrophysics, Keele University<\/a><\/em><\/span><\/p>\n\n

This article is republished from The Conversation<\/a> under a Creative Commons license. Read the original article<\/a>.<\/p>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"The Boeing Starliner docked with the International Space Station on July 3 2024, during the latest mission. Nasa…\n","protected":false},"author":938,"featured_media":12622,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/08\/Boeing_CFT_Starliner_Lift_and_Mate_%28KSC-20240416-PH-KLS02_0083%29.jpg\/2560px-Boeing_CFT_Starliner_Lift_and_Mate_%28KSC-20240416-PH-KLS02_0083%29.jpg","fifu_image_alt":"","footnotes":""},"categories":[14],"tags":[529,1636,1634,1613,631,1635,474],"class_list":{"0":"post-12620","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-aerospace","9":"tag-astronaut","10":"tag-boeing-starliner","11":"tag-space-mission","12":"tag-space-tourism","13":"tag-starliner","14":"tag-the-conversation","15":"cs-entry","16":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/938"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=12620"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12620\/revisions"}],"predecessor-version":[{"id":12621,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12620\/revisions\/12621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/12622"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=12620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=12620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=12620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}