Kapton high-temperature tape
Never heard of it.
Posted on 09/01/2018 2:17:30 PM PDT by LibWhacker
by Jeff Foust — August 30, 2018 Soyuz MS-09 The ISS crew traced the leak to a small hole in the orbital module, the top section of the Soyuz MS-09 spacecraft. Credit: NASA
WASHINGTON — As the crew of the International Space Station worked Aug. 30 to fix, at least temporarily, a minor air leak, the incident illustrated the growing orbital debris risk to the outpost and strains in American and Russian approaches to ISS operations.
NASA, in a statement early Aug. 30, said that controllers first noticed a minor drop in air pressure within the station at around 7 p.m. Eastern Aug. 29. Flight controllers allowed the crew to continue sleeping since the pressure drop did not pose an immediate risk to the crew, who were notified of the problem when they woke up at their regular time.
The station’s crew traced the drop in air pressure to a hole about two millimeters in diameter in the orbital module of the Soyuz MS-08 spacecraft docked to the station. They covered the hole with a piece of Kapton tape to slow the rate of the leak temporarily.
In communications with controllers in NASA’s mission control facility in Houston, astronaut Drew Feustel, the commander of the Expedition 56 crew, sought a delay in implementing a permanent solution proposed by Russian controllers, concerned that, if such a fix failed, it might cause further damage to the spacecraft or other jeopardize the ability to fix the leak.
“I would really like to see a test of that, somehow, on the ground before we do a test up here and see if it’s going to work,” he said. “We sort of feel like we’ve got one shot at it and if we screw it up, then the implications are one of these [Soyuz] vehicles is going home, or that vehicle is going home, sooner than later.”
Feustel reiterated a desire for a delay in other conversations with controllers, concerned that Russia wanted to move ahead with a permanent repair immediately. “I’m inclined to request that we have some more time, like 24 hours, to talk about this,” he said. Controllers told him that there were potential alternatives under consideration that NASA engineers were discussing with their Russian counterparts.
Ultimately, though, the Russian space agency Roscosmos elected to move ahead immediately with a more permanent repair, using gauze and epoxy to cover the hole. Russian cosmonauts, speaking through an interpreter, said they were able to successfully cover the hole around 12:30 p.m. Eastern, but were concerned about a bubble that formed in the makeshift patch. Controllers advised them to let the patch harden in place overnight before taking any other steps in the repair.
The cause of the hole is not immediately known. Roscosmos, in a statement, called the hole a “microcrack” and that it had formed a special commission to study the problem.
One potential cause of the hole is an impact with a micrometeoroid or a piece of orbital debris, collectively known as MMOD by NASA. While such objects have struck the station in the past, no such impacts in the past have been linked to air leaks from the station.
“If that’s true, that would be a landmark thing,” said Wayne Hale, a former space shuttle program manager and current member of the NASA Advisory Council, during a meeting of the council Aug. 30 at the Ames Research Center. “If it is, that’s kind of a somber milestone as we talk about MMOD and space traffic management.”
Never heard of it.
In aviation, there is something known as "stop drilling", to prevent a crack or rip from continuing and lengthening. Seems like, while NASA complains about Russian rushing-to-repair, they were themselves taking a risk that the tear or crack was not something, small now, but a leak in progress getting larger.
They need to test a repair procedure on Earth first?
Seems like repairing a puncture or crack in the hull should have been carefully planned and tested BEFORE this happened.
Or, maybe the Russian module has always been a catastrophe waiting to happen, and NASA has ignored that fact in political deference to the “International” Space Station?
Couldn’t they just sit on it?
Read a SciFi story about that many many years ago (50) in
ASTOUNDING Science Fiction.
Paging astronaut Cunningham.
The long term solution to this problem is pretty obvious, and not extremely expensive. It is the Big Ball of Sticky solution. A satellite once in orbit, flies a very irregular, 3 dimensional orbit, after surrounding itself with a heat and cold resistant polymer blob of goo.
Its purpose is to collide with clouds of small orbital debris that even if they hit it at high speed will stick to the polymer. Then once it has a full load, it reenters the atmosphere burning it all up.
Get some of that tape to Sen. Bill Nelson and get him on the next Soyuz.
Get some of that tape to Sen. Bill Nelson and get him on the next Soyuz.
A 2mm hole ?
Strip search for a 2mm drill bit.
The Kapon tape is the brown flexible stuff inside computers and other electronic devices.
Kapton
‘Phil here, Flex Tape will stick even under water, outer space’
‘Order now, $19.95. But wait..........’
I use it in electronics work when repairing laptops and such. It's a common thing in computers.
Orbital debris can’t be avoided. That’s why some high schools will be named after some astronauts.
The first problem they’re going to have with epoxy is, the exterior is freezing, so will the epoxy be able to set in any thickness, and how brittle will that thickness be? The next problem is even JBWeld HiTemp fails over 600degrees, so it will melt/burn on re-entry. Epoxy was the wrong move, including fumes that can’t be scrubbed. The hole needs to be located and patched from the outside.
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