Problem Shuttle Fleet 4.8 problems after ET jettison

[Wolf]

Umbilical Doors

I am experiencing some problems with the Shuttle Fleet 4.8
After ET separation (either done automatically after a nominal ascent or manually by pressing J after MECO) the Shuttle umbelical doors are CLOSED already. Theoretically if I'm not wrong we should still have to do that manually by pressing CTRL+J...:hmm:

Anyone having the same problem?



OMS burn

Funny thing happening with Shuttle Fleet 4.8 after MECO and ET separation during contingency ops (which means shutting down the SSME and performing ET SEP manually before reaching nominal MECO).
As soon as the ET has been jettisoned the RCS fuel dump starts (which is ok) but also an extra OMS burn is triggered....

Is that normal? Or maybe I am missing something?

Thanks for the help!

 

[astrosammy]

The following lines need to be added in the shuttle section of your scenario file:

  PETD 1 1.0000
  SETD 1 1.0000

(For "Port External Tank Door" and "Starbord External Tank Door")

The section where you need to add this looks like this:

Endeavour:Shuttle
  STATUS Landed Earth
  POS -80.6208900 28.6271740
  HEADING 2.00
  PRPLEVEL 0:1.000 1:1.000 2:1.000
  NAVFREQ 0 0
  CONFIGURATION 0
  OV- 105
  RMSARM
  RENDER
  CARGODOOR 0 0.0000
  KUBAND 0 0.0000
  POSTLAND 0 0.0000
  SSMES 0 0.0000
  ADTA 0 0.0000
  PETD 1 1.0000
  SETD 1 1.0000
  ARMTILT 0 0.0000 0 0.0000
  PRADIATOR 0 0.0000
  SRADIATOR 0 0.0000
  GEAR 0 0.0000
  PAYLOAD_MASS 0.0000
  SAT_OFS_X 0.000
  SAT_OFS_Y 0.000
  SAT_OFS_Z 0.000
  OMS 
  CALLOUT 
  TGT_HEADING  42.000 228.0
  ASSIST 134.0 77.0
END

 

[Wolf]

Ok, thank you astrosammy :thumbup:

 

[Lydia]

that OMS burn is to start the circuisation of the orbit and to get the orbiter away from the ET

 

[David413]

that OMS burn is to start the circuisation of the orbit and to get the orbiter away from the ET

WRONG. The latest shuttle fleet incorporated changes to support TAL capabilities from the (unreleased) AutoFCS that is still under development, including an auto prop dump (which is through the OMS as well as the RCS). Please refrain from answering questions if you don't know what you are talking about.

 

[David413]

The following lines need to be added in the shuttle section of your scenario file:

Shouldn't be necessary; V4.8 of the fleet included automated TAL ability and in the shuttle program the ET doors were closed AUTOMATICALLY upon an abort. The doors should be closed once the ET is jettisoned during an abort, be it an ECAL or TAL.