Orbiter 2024 Live Space Shuttle flight

[Geoair2]

STS-71

 

[Urwumpe]

Good luck with your endevour, I'll maybe take a look during the interesting mission phases.

 

[GLS]

That rendezvous is way too expensive propellant-wise... you should follow the instructions in the FDO MFD manual, and delete the previous burns. Otherwise it will just "throw" the vehicle in the general direction of the target, and then you are asking the onboard targeting to "clean up" the mess (and sometimes it won't be able to do so before you run out of prop), and it ends up performing "crazy" burns: the Ti burn should be something like 10 fps prograde, and not 300 fps sideways, and the MCs should be so small (a couple of fps) they are performed with the RCS.
The Mir is visible now! (but it should be above you, not below...)

 

[GLS]

In addition to the Ku-Band antenna, which doesn't work in GPC mode yet, SPEC 34 will show you how far you are from the target. The current tools are not the complete set available to the astronauts, but the work @indy91 put in made a rendezvous possible without any of the Orbiter MFDs.

 

[Geoair2]

I don't usually understand everything works without problem and then I can't carry out the mission correctly for some reason that I don't know

 

[Geoair2]

I have to try with another mission where the rendez-vous is more direct and simple and see if I'm not having a problem somewhere with my Orbiter

 

[GLS]

I have to try with another mission where the rendez-vous is more direct and simple and see if I'm not having a problem somewhere with my Orbiter

Read Section 8 "OMP Walkthrough" in the FDO MFD manual. Many changes need to be performed in the MCT page as the flight progresses.

 

[N_Molson]

Space is hard, don't worry. Nice effort

 

[Geoair2]

in a few minutes I will start an attempt with STS-112

 

[DaveS]

Read Section 8 "OMP Walkthrough" in the FDO MFD manual. Many changes need to be performed in the MCT page as the flight progresses.

Yes and this is perfectly normal and expected, even for the OMS-2 burn. They frequently updated the TIG based on the actual ascent performance as well as day of launch tracking of the rendezvous target. So don't ever feel bad about updating the burns after you just completed a burn.

 

[Geoair2]

 

[GLS]

BTW: AFAIK the OPS-8 checkout only occurs late in the mission, and not on orbit 1...

 

[DaveS]

BTW: AFAIK the OPS-8 checkout only occurs late in the mission, and not on orbit 1...

Yes, it's part of the L(Landing)-1 day checkouts as part of the FCS Checkout procedure.

 

[GLS]

The rendezvous profile already seems to be going downhill: retrograde burns coming up, which did not happen for these missions.
If you are not removing the previous burns, it probably would be better to not recalculate the plan after each burn, and just use the initial estimate. It would likely be easier for the onboard targetting to cleanup afterwards...

 

[GLS]

Also, you are skipping the NPC burn, which aligns the orbital planes (I saw this in previous missions, and forgot to mention).
Leaving this task for later means longer burns in the final burns of the rendezvous = more errors in the burn = harder to follow the rendezvous profile. There is always a lateral cleanup later on, but it should be very small, compared with the usual NPC burn (thus why its existence).

 

[GLS]

The Ti burn is the last OMS burn, and is only performed with the left engine. The MCs should be small enough to perform with the RCS: no maneuvering around needed (which disturbs the vehicle trajectory, which causes larger burns later) and more precision in achieving the required dV (less burns later on).

 

[GLS]

To undock just press the Undocking button, that will open the hooks and the springs will separate the vehicles.

 

[GLS]

Congratulations on the successful flight!

Still, you really need to improve the rendezvous, this one was just salvageable...

 

[Donamy]

Try that with Better ISS.

 

[Geoair2]

Small survey, what mission would you like to see for my next live?
I can offer you STS-97 STS-98 STS-110 STS-113 STS-114 STS-115 STS-124 STS-131