Problem SSU Deorbit Checklist

[Johan2011]

I need a SSU Deorbit Checklist plz.

 

[Urwumpe]

Try it here:

Wayback Machine

The original page went the way of the Dodo, but the internet never forgets

 

[Johan2011]

I tried this Checklist, but the Shuttle Collapses when is Away from the Landing Site.

 

[Urwumpe]

I tried this Checklist, but the Shuttle Collapses when is Away from the Landing Site.

What do you mean with COLLAPSES?

Its no blimb, it can't collapse. Did you calculate the deorbit in the proper distance to the base? Have you looked at Shuttle FDO MFD and its deorbit processor?

 

[Johan2011]

In what Distance from the Base im perfoming the burn?

 

[Urwumpe]

In what Distance from the Base im perfoming the burn?

If you want the inaccurate version: 18000 km.

Happy with this answer?

 

[Johan2011]

But what fps i do the burn?

 

[Urwumpe]

But what fps i do the burn?

The difference between your orbital velocity in that location and the orbital velocity at the location of an orbit that passes right through the entry interface at -1.5° flight path angle. You can use a slide rule to calculate that.

Or use FDO MFD.

Shuttle FDO MFD

Something weird is going on here with FDO MFD, the LWP only outputs negative figures as shown in the attached screenshot. Not sure what might be causing it. I have also included the SSV package for you check things out:

www.orbiter-forum.com

 

[Johan2011]

I need to go to Deorbit Opportunites?

 

[Urwumpe]

I need to go to Deorbit Opportunites?

What do you think, is a deorbit opportunity?

 

[Johan2011]

The result of the Periapsis is 32 km.

 

[Johan2011]

I succesfully Landed the Shuttle.

I attempted with STS-1 and landed at EDW.

I made another attempt with STS-98 and landed at KSC.

 

[Urwumpe]

The result of the Periapsis is 32 km.

If you mean periapsis altitude, it is perfectly correct. The Shuttle really reenters THAT shallow.

If its periapsis radius, I wonder where you found the fuel for such a 7 km/s velocity change.

 

[Johan2011]

In what distance i deorbit?

The distance for deorbit is 18000 km, but perform the burn when gets away or close to the base?

 

[Johan2011]

What fps i do the deorbit?

The fps of Periapsis or fps of Apoapsis?

 

[Johan2011]

BaseSyncMFD is an Better Option?

The number of the Alt?

 

[Johan2011]

I need a Circular Orbit or 300km x 200km orbit?

 

[Urwumpe]

I need a Circular Orbit or 300km x 200km orbit?

The Shuttle guidance should be able to handle both cases.

 

[Johan2011]

But, how i can calculate the orbital velocity?

 

[Urwumpe]

But, how i can calculate the orbital velocity?

Why do you need to?