Skylab: 1st Floor Head and Sleep Compartment
ฝัง
- เผยแพร่เมื่อ 21 ก.ย. 2024
- Part 1: America's First Space Station ( • Skylab Part1: America'... )
Part 2: First Crew ( • Skylab Part2: First Crew )
Part 3: Operational ( • Skylab Part3: Operational )
Extras:
-Skylab: Apollo Telescope Mount ( • Skylab: Apollo Telesco... )
-Skylab: Structural Transition Section ( • Skylab: Structural Tra... )
-Skylab: Multiple Docking Adapter ( • Skylab: Multiple Docki... )
-Skylab: Airlock Module ( • Skylab: Airlock Module )
-Skylab: Orbital WorkShop 2nd Floor ( • Skylab: Orbital Worksh... )
-Skylab: Orbital WorkShop 2nd Floor Dome ( • Skylab: Orbital Worksh... )
-Skylab: Orbital WorkShop 1st Floor Experiment Support System ( • Skylab: 1st Floor Expe... )
-Skylab: Orbital Workshop 1st Floor Trash/Shower/Rotating Chair/LBPN/Bike/Dosimeter ( • Skylab: 1st Floor (Tra... )
-Skylab: Orbital Workshop 1st Floor Wardroom ( • Skylab: Orbital Worksh... )
-Skylab: Orbital Workshop 1st Floor Head / Sleep Compartment (this video)
-Skylab: External Tour ( • Skylab: External Tour )
Skylab was America's first space station. Shortly after launch the micrometeoroid shield ripped off exposing the shiny gold layer underneath. As the shield tore away, one of the main solar arrays partially deployed. During staging, a retrorocket exhaust hit the partially deployed arrays completely ripping it off the spacecraft. The Orbital Workshop (OWS) had 2 floors. This video focuses on the first floor.
Head Panels in View:
--800: waste management compartment (WMC) control pnl
--801: intercom box
--803: utility power out
--817: waste processor control pnl
--818: vent/urine dump processor
--825: fecal/urine collector
--831: waste dump valve
Sleep Compartment Panels in view:
--901/902/903: intercom
Skylab 1: The Workshop
-Launch: May 14, 1973
-Deorbit: July 11, 1979
-Mass: 168,750 lbs without Apollo CSM
-Inclination: 50 deg
-Altitude: about 270 miles
Skylab 2 (crew mission 1)
-Crew: Pete Conrad (Apollo 12), Joe Kerwin, Paul Weitz
-Launch Date (original): May 15, 1973
-Launch Date (actual): May 25, 1973. Delayed to work out repair procedures and to build/develop special tools.
-Mission Days: 28
Skylab 3 (crew mission 2)
-Crew: Alan Bean (Apollo 12), Owen Garriott, Jack Lousma
-Launch Date: July 28, 1973
-Mission Days: 60
Skylab 4 (crew mission 3)
-Crew: Pete Conrad (Apollo 12), Gerald Carr, Ed Gibson, William Pogue
-Launch Date: Nov 16, 1973
-Mission Days: 84
Animation notes:
-Animation done in Blender with all models built by me. Used the lower quality EEVEE engine to reduce render times. But I did use 30 frames per second for the Skylab series vs 24 FPS I have used in previous Apollo videos.
#apollo #skylab #nasa #spacestation #space #blender #astronaut #saturnv #launch #launchpad #rocket
Of course they are different contexts.
But it's simply amazing to see details of the space station from the 1970's and notice that it seems that much of the work is still applicable today. Like the internal organization, accommodations, instrument panels, modular systems, communication, etc...
It is also interesting to see what things did not carry over. For instance, no one uses the triangular cleated shoes anymore to link into a gridded floor. While Skylab has a wardroom, ISS does not.
I checked pipes scattered inside the Skylab that appear to be ventilation or CO2 eliminators.
I thought the size was above normal, but it is visible in the actual videos that one of the Skylab modules had a wider area, something not adopted on the ISS.
Watching your videos, it is evident a masterpiece of engineering, unfortunately it was abandoned and visited by only 9 astronauts.
The air ventilation is through the very large white pipes. In reality the pipes are flexible lines not that different than dryer hoses except bigger. On the second floor there are 3 large boxes mounted to the walls that the pipes go into. These are the fan clusters. Each cluster has 4 fans mounted inside them (fans not visible inside the cluster). You can see one fan up in the dome that moves air up into the airlock and you can see a spare fan mounted on the dome ceiling. There are many of these units mounted all over the place. In a gravity environment convection would mix the air evenly getting rid of CO2 pockets. In space, you need to force the air movement. Skylab uses the full width of a Saturn SIV stage which is huge (over 21 feet in diameter). ISS modules were sized to fit into the SpaceShutte payload bay (15 ft diameter). Skylab was outfitted with all the water/food/oxygen/clothes for 9 astronauts at launch. By the end of the third mission, the control moment gyros (CMGs) were starting to fail. The CMGs give the fine pointing for the telescopes.
@@opieswenson Thanks for the technical information.
21 feet😳, to me, is an impressive number in space, just like the Saturn SIV.
I noticed that the air tubes on Skylab were bigger than those on the ISS.
I know the engineering is old, but are the big tubes also used for cold cooling for Skylab?
@@opieswenson I noticed in other videos that the Skylab telescope's optical system was relatively small. Perhaps it was intended for close observations.
@@rsmrsm2000 Hubble and James Webb were designed to look out to the beginning of the universe and need very large mirrors. Skylab ATM was designed to observe the sun (smaller optics). The ATM experiment instruments consisted of a White Light Coronagraph (S052), an X-Ray Spectrographic Telescope (S054), an
Ultraviolet (UV)Scanning Polychromator Spectroheliometer (S055A), an X-Ray Telescope (S056), an Extreme Ultraviolet (XUV) Spectro- heliograph (S082A), a Spectrograph and XUV Monitor (S082B), and
two Hydrogen-Alpha Telescopes (H-Alpha 1 and H-Alpha 2).
@@rsmrsm2000 The large white tubes are also part of the cooling system along with chill water and heat pipes that transfer heat from the hot side to the cooler side. Of note, you can also see radiant heaters all over the place (don't know if the were actually used since it was hot inside the OWS...but pretty chill in the MDA and airlock). All of the radiant heaters are the same size and shape. Some mounted to the walls and some on the ceiling. You can see one mounted to the left of the Wardroom door as you are going into the wardroom (vertical silver cylinder)
Ventilation tubes were probably also used for exhaustion and they had filters to eliminate excess liquids, among others.
See my Structural Transition Section video panels 203 and 216. Condensate control controls the water and the molecular sieve is what controls carbon dioxide and odors. When they deactivated Skylab in between crews, they would switch the molecular sieves off and bake them out and use the command module lithium hydroxide system to take over. The bake out heaters are on panel 203.
I don't know if I'm correct.
But with the increase in altitude and proximity to the magetosphere, there was a need to care for sensitive electronic equipment, for which cables and electrical connectors had to be protected.
In addition, there was redundancy of vital electronic equipment, at least I noticed that on the ISS.
Not sure about the cabling. All film was stored in lead vault with the largest vault being on the second floor to the left of the 2 manned maneuvering devices. Skylab did use their multiple dosimeters specifically to study the effect of shielding against the south Atlantic anomaly which is where the van Allen belt dips low (en.wikipedia.org/wiki/South_Atlantic_Anomaly). The dosimeters were located in various parts of the station with either light, medium or heavy shielding. The SAA did set off the flare alert alarms which were only supposed to go off during a solar flare so that the astronauts could rush up to the ATM console. The SAA has caused modern laptops on ISS to crap out.
Thank you for the informations. Yes I heard that too, the notebooks broke in this episode. Proof that we need to be concerned even though we are close to low orbit. The batteries acted mainly when the ship was not attended by the sun (Earth in front of the Sun). Batteries had to be strong and durable because of the amount of equipment and lithium ion technology was not common at the time. And because of that, the batteries could be big (in my opinion).
Do you know where the Skylab batteries are?
Eight separate PCG's (power condition groups) provide the electrical power system (EPS) to control, store, and condition the unregulated power received from the solar array groups and to provide regulated dc power to the buses. The PCG's are mounted on two battery modules located on the airlock module -Z truss and +Y truss. The equipment for four PCG's (four batteries, four battery chargers, and four bus voltage regulators) is mounted on each battery module. The battery modules are actively cooled by coldplates. Coolant flow through the two battery modules coldplates is paralleled to reduce pressure drops. I will be showing the two battery modules in the next video. The batteries were 28 volt/20 AH nickel-cadmium.
I just think that there was great potential for Skylab and it could have been better used in a lot of scientific work. It is a pity that there was an irrecoverable defect.
Do you know details why it was abandoned?
It was only designed and outfitted for the 3 missions and by the end of the third mission the CMGs were giving them fits. The CMGS keep the space station pointed in the correct orientation which was required for the solar observations. Solar activity had also expanded the atmosphere somewhat causing additional drag on the vehicle which was causing the orbit to decay. I believe they did not feel it was worth it to boost it to a higher orbit with the long list of issues they were having.