The Official Space Flight Thread - The Space Station and Beyond

Glaucus · 14 Mar 2016 at 14:38

Yeah no idea for 11 but for latter landings it was 75hrs.

Cosimo · 14 Mar 2016 at 15:11

I believe that for Apollo 11 the LM Environmental Control Subsystem (ECS) supported two for 24 hours on surface and another 24 hours flight time.

Their space suits also had a Primary Life Support System (PLLS) with around 4 hours support and 1 hour reserve time.

Combat squirrel · 14 Mar 2016 at 15:31

JRS said:
Interesting question.

The first landing missions (11 through to 14) weren't set up for especially long duration missions on the lunar surface. I know 13 was carrying oxygen to support two men for 45 hours - 13's mission (before it all turned to worms) was going to involve two excursions onto the surface so would require more oxygen than 11, with having to depressurise and repressurise the cabin twice. That might still have been achievable with the previous missions though.

If you assume that 11's LM was carrying the same amount of oxygen as 13, then you've got a 45 hour supply. But there's also battery life and water - not only for drinking, but for cooling the spacecraft systems - to consider. You can have all the oxygen in the world, but if the spacecraft systems no longer function because the batteries are dead or the systems have overheated then you aren't going to be alive for very much longer! Also there's the carbon dioxide to get rid of - Apollo used lithium hydroxide canisters to remove it from the atmosphere inside the spacecraft, but they become saturated after a while and no longer usable. 13 ended up stretching their LM supplies to keep three men alive for about 90 hours, using minimal power draw (which also kept water usage down since there were fewer systems to cool) and adapting command module lithium hydroxide canisters for use on the LM. I'd figure on 11's supplies probably not making it quite that far, even with only two men inside.

Glaucus said:
Yeah no idea for 11 but for latter landings it was 75hrs.

Cosimo said:
I believe that for Apollo 11 the LM Environmental Control Subsystem (ECS) supported two for 24 hours on surface and another 24 hours flight time.

Their space suits also had a Primary Life Support System (PLLS) with around 4 hours support and 1 hour reserve time.

Awesome thanks guys !! so were looking at 24 hours LS in the landing section of the lander Cosimo ? Then another 24 in the ascent stage? Or was it all in the ascent stage?

Thanks

Cosimo · 14 Mar 2016 at 15:51

Combat squirrel said:
Awesome thanks guys !! so were looking at 24 hours LS in the landing section of the lander Cosimo ? Then another 24 in the ascent stage? Or was it all in the ascent stage?

Thanks

The life support is in the ascent stage. The descent stage supports landing and surface activities.

If you want to dig around then:

LM Environmental Control Subsystem:

https://www.hq.nasa.gov/alsj/alsj-LM-ECS.html

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720013195.pdf

LM systems diagrams:

http://www.ehartwell.com/LM/SCATSystems.htm

Combat squirrel · 14 Mar 2016 at 17:10

Cosimo said:
The life support is in the ascent stage. The descent stage supports landing and surface activities.

If you want to dig around then:

LM Environmental Control Subsystem:

https://www.hq.nasa.gov/alsj/alsj-LM-ECS.html

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720013195.pdf

LM systems diagrams:

http://www.ehartwell.com/LM/SCATSystems.htm

Fantastic stuff! Thanks Cosimo, brilliant knowledge you have to hand

Cosimo · 15 Mar 2016 at 06:53

Expedition 47-48 Soyuz Commander Alexey Ovchinin and Oleg Skripochka of Roscosmos and Flight Engineer Jeff Williams of NASA and their backups, Sergey Ryzhikov and Andrey Borisenko of Roscosmos and Shane Kimbrough of NASA preparing for the 19th:

Cosimo · 15 Mar 2016 at 12:37

As promised, a visit to Cosmonauts: Birth of the Space Age:

Cosmonauts017 by MrBlueSky*, on Flickr

The rest can be found here:

https://www.flickr.com/photos/cosimoss/albums/72157665903042146

Enjoy your visit.

Cosimo · 16 Mar 2016 at 06:05

From the past to the future as the Orion solar array wing gets it's first deployment test:

Cosimo · 16 Mar 2016 at 06:38

Tim Kopra on the progress of his mission and research on the station:

Cosimo · 16 Mar 2016 at 09:07

Rollout of Soyuz FG/Soyuz TMA-20M:

Launch scheduled for the 18th at 21:26 GMT (17:26 EDT).

Cosimo · 17 Mar 2016 at 06:45

More rollout:

Cosimo · 17 Mar 2016 at 08:18

A better video of ExoMars 2016 launch a few days ago:

Cosimo · 17 Mar 2016 at 15:21

Cosimo said:
Hopefully the first of many 360° views of the space station. Here we have first module, Zarya. Launched on November 20th 1998:

Also known as the Functional Cargo Block, the module is now mainly used for storage.

We have another 360° view. Here we have the second module, Unity. Launched on 4 December 1998 inside Space Shuttle Endeavour, it was joined to the Russian Zarya module two days later, forming the basis of the International Space Station:

Also known as Node-1, the cylindrical module has six docking ports to connect visiting spacecraft and other modules.

Glaucus · 17 Mar 2016 at 23:23

Moon shot is now on youtube, I take it all 9 parts make the entire "film"?

Slowly working my way through.

Cosimo · 18 Mar 2016 at 14:58

video summary of ESA astronaut Tim Peake's Principia mission:

Cosimo · 19 Mar 2016 at 07:21

Expedition 47-48 Soyuz Commander Alexey Ovchinin and Flight Engineers Oleg Skripochka of Roscosmos and Jeff Williams on their way:

Cosimo · 19 Mar 2016 at 07:36

This week:

Cosimo · 19 Mar 2016 at 08:17

Expedition 47-48 arrive at the station:

Cosimo · 20 Mar 2016 at 08:00

Cygnus cargo craft set to resupply the station:

Launch scheduled for March 23 at 03:05 - 03:35 UTC.

Cosimo · 20 Mar 2016 at 08:45

Atlas V OA-6: Booster offload and Centaur mate:

** The Official Space Flight Thread - The Space Station and Beyond **

The Official Space Flight Thread - The Space Station and Beyond