Questions tagged [ballistics]

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6
votes
2answers
2k views

Center of mass location on any popular rocket in any typical condition?

Where can I find the location of the center of gravity (CoG) of any rocket? I need any popular rocket, such as the Soyuz or Space Shuttle, in any typical condition, like fully fueled on the pad. ...
7
votes
1answer
147 views

Conjunction analysis for deep space missions

How rigorously is conjunction analysis (finding out the chances of hitting an asteroid or another known object) conducted for missions beyond Earth orbit? Due to larger computational resources ...
6
votes
1answer
235 views

What use could be getting to space just for a bit?

I asked a question about reaching space using non-rocket aircrafts on aviation.se and I found out that it may be possible to reach the space for a short moment and then a normal aircraft designed to ...
2
votes
2answers
1k views

Transformation from Earth-centered inertial (ECI) to Geocentric (GEOC) satellite coordinates

I'm trying to follow the definition for converting Earth-centred inertial (ECI) coordinates (as output by SGP4) to Geocentric (GEOC) for later computation from this reference: Coordinate Systems for ...
10
votes
2answers
1k views

Range of BFR as single stage

The depictions of the BFR for earth to earth travel include the 1st stage booster. I would think if you are just going ballistic, the upper stage would have enough delta V to go it alone, for closer ...
5
votes
3answers
501 views

Lunar sub-orbital trajectories

How do you determine (what is the formula?) the delta-V for a sub-orbital 'hop' from one location on the Moon to another? Is it different from a typical orbital calculation?