QuoteSpaceX tweet @SpaceX6 minFalcon 9 wet dress rehearsal complete. We’ll continue to work closely with @NASA and @Axiom_Space to determine the best launch opportunity for Dragon and the Ax-4 crew to the @Space_Station
SpaceX tweet @SpaceX6 minFalcon 9 wet dress rehearsal complete. We’ll continue to work closely with @NASA and @Axiom_Space to determine the best launch opportunity for Dragon and the Ax-4 crew to the @Space_Station
Russian space agency Roscosmos said on Friday that a leak on the Russian segment of the International Space Station (ISS) had been repaired, the Interfax news agency reported.
Roscosmos recently confirmed that it completed its most recent repairs on the PrK module earlier this month, saying it had been "completely sealed." NASA has also said that repairs were recently wrapped up. After this, both Roscosmos and NASA said the leak rate inside the PrK module had halted.This seems like good news. However, the overall air pressure in the space station at large continued to drop, according to two sources. So if the PrK module was not leaking, as it had been doing for half a decade, why was the space station still losing air pressure?No one is certain. The best guess is that the seals on the hatch leading to the PrK module are, in some way, leaking. In this scenario, pressure from the station is feeding the leak inside the PrK module through these seals, leading to a stable pressure inside—making it appear as though the PrK module leaks are fully repaired.At this point, NASA is monitoring the ongoing leak and preparing for any possibility. A senior industry source told Ars that the NASA leadership of the space station program is "worried" about the leak and its implications.This is one reason the space agency delayed the launch of a commercial mission carrying four astronauts to the space station, Axiom-4, on Thursday."The postponement of Axiom Mission 4 provides additional time for NASA and Roscosmos to evaluate the situation and determine whether any additional troubleshooting is necessary," NASA said in a statement. "A new launch date for the fourth private astronaut mission will be provided once available."One source indicated that the new tentative launch date is now June 18. However, this will depend on whatever resolution there is to the leak issue.
132009Z JUN 25NAVAREA IV 622/25(11).WESTERN NORTH ATLANTIC.FLORIDA.1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING 180905Z TO 180955Z JUN, ALTERNATE 190845Z TO 190935Z, 200820Z TO 200910Z, 210755Z TO 210845Z, 220735Z TO 220825Z, 230710Z TO 230800Z AND 240650Z TO 240740Z JUN IN AREA BOUND BY 28-38.98N 080-37.67W, 28-49.00N 080-25.00W, 28-41.00N 080-13.00W, 28-31.00N 080-21.00W, 28-27.77N 080-31.66W.2. CANCEL THIS MSG 240840Z JUN 25.
NASA isn't giving out much information on the newest ISS leaks, so I did some digging. Here's what is really going on up there.
The leak must have had a serious increase suddenly, to require the cancellation of an imminent manned launch.
Quote from: daedalus1 on 06/13/2025 08:54 pmThe leak must have had a serious increase suddenly, to require the cancellation of an imminent manned launch. Or NASA created a smokescreen to hide problems with the Dragon spacecraft.It's not our fault, it's the Russians'.
Ax-04 Mission Press UpdateJune 14th, 2025During a follow-on coordination meeting between ISRO, Axiom Space, and SpaceX, it was confirmed that the liquid oxygen leak observed in the Falcon 9 launch vehicle has been successfully resolved.Separately, Axiom Space informed that they are working closely with NASA to assess the pressure anomaly in the Zvezda Service Module onboard the International Space Station.Axiom Space is now targeting June 19, 2025 for the launch of the Ax-04 mission.
🚨 WE HAVE A LAUNCH DATEThe Axiom-4 mission carrying the second-ever Indian astronaut is set to launch on JUNE 19TH! 🚀The Liquid Oxygen leak on board the Falcon 9 rocket, which had been troubling the mission, has been fully resolved.Parallelly, NASA and Roscosmos continue to work on the pressure anomaly on the Zvezda module of the International Space Station, which was also one of the reasons for the delay of Ax-4.
Confirmation of the launch on 19 June:https://twitter.com/ISROSpaceflight/status/1933765320826565041Quote🚨 WE HAVE A LAUNCH DATEThe Axiom-4 mission carrying the second-ever Indian astronaut is set to launch on JUNE 19TH! 🚀The Liquid Oxygen leak on board the Falcon 9 rocket, which had been troubling the mission, has been fully resolved.Parallelly, NASA and Roscosmos continue to work on the pressure anomaly on the Zvezda module of the International Space Station, which was also one of the reasons for the delay of Ax-4.
A Falcon 9 will launch the Axiom-4 spaceflight participant mission to the International Space Station from pad 39A on June 19 at 4:46 a.m. EDT. The first stage will land back at the Cape about eight minutes after launch.
NASA, Axiom Space, and SpaceX are reviewing launch opportunities no earlier than Thursday, June 19, for the fourth private astronaut mission to the International Space Station, Axiom Mission 4.On June 12, NASA and Axiom Space delayed the mission as the agency continued to work with Roscosmos to understand the most recent repair efforts to seal small leaks. The leaks, located in the aft (back) most segment of the International Space Station’s Zvezda service module, have been monitored by flight controllers for the past few years.Following the most-recent repair, pressure in the transfer tunnel has been stable. Previously, pressure in this area would have dropped. This could indicate the small leaks have been sealed. Teams are also considering the stable pressure could be the result of a small amount of air flowing into the transfer tunnel across the hatch seal from the main part of space station. By changing pressure in the transfer tunnel and monitoring over time, teams are evaluating the condition of the transfer tunnel and the hatch seal between the space station and the back of Zvezda.
141935Z JUN 25NAVAREA IV 624/25(11).WESTERN NORTH ATLANTIC.FLORIDA.1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING 190845Z TO 190935Z JUN, ALTERNATE 200820Z TO 200910Z, 210755Z TO 210845Z, 220735Z TO 220825Z, 230710Z TO 230800Z, 240650Z TO 240740Z AND 250620Z TO 250710Z JUN IN AREA BOUND BY 28-38.98N 080-37.67W, 28-49.00N 080-25.00W, 28-41.00N 080-13.00W, 28-31.00N 080-21.00W, 28-27.77N 080-31.66W.2. CANCEL NAVAREA IV 614/25, 622/25.3. CANCEL THIS MSG 250810Z JUN 25.
And here’s the launch time from Ben Cooper:QuoteA Falcon 9 will launch the Axiom-4 spaceflight participant mission to the International Space Station from pad 39A on June 19 at 4:46 a.m. EDT. The first stage will land back at the Cape about eight minutes after launch.
A Falcon 9 will launch the Axiom-4 spaceflight participant mission to the International Space Station from pad 39A on June 19 at 4:53 a.m. EDT.
https://www.ndtv.com/india-news/crack-on-astronaut-shubhanshu-shuklas-rocket-how-isros-intervention-averted-fatal-disaster-8667532ISRO seems thttps://forum.nasaspaceflight.com/Themes/nsf2019/images/bbc/bold.gifo be taking credit for saving this mission. How much is true? Where was the leak? If it only affected one engine, F9’s engine out capability should save the day. I don’t think SpaceX would have gone for a patch if it could affect the whole booster.
SpaceX teams went back to the launch pad and carried out inspections, which led to a surprise and shocking detection of a "weld crack" - A big flaw in one of the liquid oxygen lines. This crack had gone unnoticed, even though the first stage is a recycled and refurbished one.
Axiom Space @Axiom_Space15 minTo get ready for the gravitational forces they will experience on their journey to and from space, the #Ax4 crew participated in centrifuge training, helping equip the crew to handle the G-forces during launch and landing.
