SSU Launch Complex 39 development

[GLS]

Anyone want to make this operational?

https://www.dropbox.com/s/vnkioq6hyy47h14/KSC_CountdownClock_1.jpg?dl=0
https://www.dropbox.com/s/lricryldf52i629/KSC_CountdownClock_2.jpg?dl=0

Making it show numbers is easy... the problem is the lack of the LPS to drive it... :facepalm:

 

[DaveS]

Making it show numbers is easy... the problem is the lack of the LPS to drive it... :facepalm:

What part of the LPS is required to drive other than the GLS? AFAIK, the drivers for the clock lives in the same console as the GLS (MASTER/INTEGRATION).

Also, it's a 24hr clock so when the countdown is started it shows 19:00:00 (equivalent to 1 day, 19 hours or 43 hrs). So it ticks down to zero twice, one at T-24 hrs and then at T0. When it hits zero the first time it shows 23:59:59.

There's no real interaction between the orbiter GPCs and the GLS until T-38 seconds or thereabouts. This is from S0007.200 about setting up the clock for the Launch Countdown (LCD):

https://www.dropbox.com/s/l5a5nsjd5nflsjj/CGLS_CDC_S0007200_SET.jpg?dl=0
https://www.dropbox.com/s/h7b94q6o9pu2cqc/CGLS_CDC_S0007200_HOLD.jpg?dl=0
https://www.dropbox.com/s/w7qh76k2a09u64h/CGLS_CDC_S0007200_COUNT_T27.jpg?dl=0

 

[DaveS]

Could someone who's a bit better at math translate the following data into Orbiter usable code, this is for the xenon lights used at the pads:

Range: 385.9645 m
Light cone base diameter: 1.3310 m
Light cone top diameter 105.70 m

 

[GLS]

Could someone who's a bit better at math translate the following data into Orbiter usable code, this is for the xenon lights used at the pads:

Range: 385.9645 m
Light cone base diameter: 1.3310 m
Light cone top diameter 105.70 m

The Xenon lights vessel or the pad stadium lights? (both on LC-39 and SLC-6?)

 

[DaveS]

The Xenon lights vessel or the pad stadium lights? (both on LC-39 and SLC-6?)

Xenon light vessel. The pad stadium lights at 39 doesn't have nearly the range that the xenon lights have. The xenon lights are only used when they plan to load the ET (either for launch, FRF or a tanking test). Any other operations use the pad stadium lights (rollout, rollback, payload canister operations, RSS rotation operations). Any other than those, the regular pad structure lights are sufficient to support whatever work is going on. The xenon lights are only turned on once the RSS is firmly tied down in the Park position.

 

[GLS]

Could someone who's a bit better at math translate the following data into Orbiter usable code, this is for the xenon lights used at the pads:

Range: 385.9645 m
Light cone base diameter: 1.3310 m
Light cone top diameter 105.70 m

Are you sure the last 2 numbers are diameters and not something else? Because that is kinda worthless as we have the range... Any more numbers?

 

[DaveS]

Are you sure the last 2 numbers are diameters and not something else? Because that is kinda worthless as we have the range... Any more numbers?

Yes, I'm sure. I took them directly from AC3D where I made a cone that represented the the illumination cone of the actual light. It was made to fit the cone seen in this screenshot from the STS-133 RSS retract for launch: https://www.dropbox.com/s/10w8pbbo3n2vk7f/vlcsnap_00580.png?dl=0

 

[GLS]

Yes, I'm sure. I took them directly from AC3D where I made a cone that represented the the illumination cone of the actual light. It was made to fit the cone seen in this screenshot from the STS-133 RSS retract for launch: https://www.dropbox.com/s/10w8pbbo3n2vk7f/vlcsnap_00580.png?dl=0

Well, I need to know the aperture (angle) of the light beam:
umbra aperture of inner (maximum intensity) cone
penumbra aperture of outer (zero intensity) cone

We can assume the visible beam in the image refers to the first number, and then we can assume the second number is twice as wide as the first.

The range is very likely bigger than the distance between the light and the vehicle. Maybe estimating that from an onboard view of a night landing is a better ideia.

 

[Wolf]

Apologies, this is maybe out of topic but since you are talking about xenon lights are you planning to add RWY xenon lights to the Shuttle landing sites?

 

[GLS]

Apologies, this is maybe out of topic but since you are talking about xenon lights are you planning to add RWY xenon lights to the Shuttle landing sites?

On my end, the landing sites are on hold until the terrain issue I found is solved and/or explained. :shrug:

 

[DaveS]

Well, I need to know the aperture (angle) of the light beam:
umbra aperture of inner (maximum intensity) cone
penumbra aperture of outer (zero intensity) cone

We can assume the visible beam in the image refers to the first number, and then we can assume the second number is twice as wide as the first.

The range is very likely bigger than the distance between the light and the vehicle. Maybe estimating that from an onboard view of a night landing is a better ideia.

This from the HUD minicam of STS-115 which was a nightlanding: https://www.dropbox.com/s/8rk8juxlekamoug/STS115_nightlanding.jpg?dl=0

Based on some experiments, umbra angle seems to be around 7.8°s.

---------- Post added 07-14-17 at 02:15 AM ---------- Previous post was 07-13-17 at 09:34 PM ----------

Could the pad/crawler offset constants in the xenon light header be made scenario adjustable? This is so it be different in each instance of the xenon light vessel as shown in this screenshot of STS-135: https://www.dropbox.com/s/zzfzokqrzlds7uf/vlcsnap_00581.png?dl=0

 

[GLS]

I added a random vertical offset to the xenon lights, so now they should not point to the same spot, but instead the light should be spread along the "vertical area" of the vehicle.

 

[DaveS]

The new MLP, still being worked on:

https://www.dropbox.com/s/a9sqj1bihvx9rnk/NewMLP_4.jpg?dl=0
https://www.dropbox.com/s/9a3udb5zxtloqwm/NewMLP_5.jpg?dl=0
https://www.dropbox.com/s/8ezuh4ppjc2k056/NewMLP_6.jpg?dl=0
https://www.dropbox.com/s/alyo6qyxn6y1mc0/NewMLP_7.jpg?dl=0
https://www.dropbox.com/s/ksaeaes10z0vxvi/NewMLP_8.jpg?dl=0

 

[DaveS]

Side 1 nearly complete, just missing the left-most pallet for the LOX skid and the pallet for the LH2 skid:

https://www.dropbox.com/s/uis107gb9wu9sje/NewMLP_9.jpg?dl=0
https://www.dropbox.com/s/2p7ghp0nf2q2iuu/NewMLP_10.jpg?dl=0

 

[N_Molson]

Cool stuff guys, really ! :thumbup:

 

[DaveS]

Here's the latest work on Side 1 of the MLP. It now sports all the skid pallets with their supports as well as the Space Shuttle Fuel Cell (SSFC) systems cabinets. The GO2 SSFC cabinet is by the LH2 skid on the top center platform while the GH2 SSFC cabinet is by the OTV camera on the left platform by the LOX skid.

https://www.dropbox.com/s/agjnjhmw7vf8qd0/NewMLP_11.jpg?dl=0
https://www.dropbox.com/s/2idsptxbrzig60l/NewMLP_12.jpg?dl=0

 

[Gingin]

Really nice work

 

[DaveS]

Side 1 platforms about done. Next up is miscellaneous details such as lights and missing details on the LOX/LH2 pipes. Then I'll begin work on Side 2 with the pipe supports for the LOX pipes.

https://www.dropbox.com/s/jpwkoi8imdpw1ih/NewMLP_13.jpg?dl=0
https://www.dropbox.com/s/uxohey13ylvllaz/NewMLP_14.jpg?dl=0
https://www.dropbox.com/s/trm7fyxshecqtbl/NewMLP_15.jpg?dl=0

 

[DaveS]

Latest work on Side 2 of the MLP, now with the LOX pipe supports and brand new 9099 Interface panels. The texture for those are still being worked on.

https://www.dropbox.com/s/vld8vq1rp4s531d/NewMLP_16.jpg?dl=0

 

[DaveS]

Not much modelling the last couple of days. Instead the work has focused on finishing up the textures. All the photogrammetry targets (the checkerboard squares) are now present and in their correct locations:

https://www.dropbox.com/s/f5ivwop9rey583i/NewMLP_17.jpg?dl=0
https://www.dropbox.com/s/r3paxzevi5ax7d8/NewMLP_18.jpg?dl=0
https://www.dropbox.com/s/ms6sxiydxgsm9fo/NewMLP_19.jpg?dl=0