# Tag Info

### Optimal depth for underground flyby?

The Optimal Depth is Precisely (Almost) No Depth I solved this problem using a numerical differential equation solver to investigate a range of flyby approach angles. The results are fascinating! I ...
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### Can a meteor shower have a interval greater than 1 year?

This is really more of a question for Astronomy.SE, in general this doesn't happen, but circumstances can work out that it does, see the updated last few paragraphs. Every meteor shower with an ...
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### What caused the jitter in the DART video as it approached Dimorphos?

This is an extended comment to your self-answer, so I'm making it community. From your answer, As to why they weren't able to do a single, early course correction and just glide smoothly in for the ...
Accepted

• 6,132

### what is 'f' (true anomaly) for in the orbital inclination change equation

This answer addresses the possibilities for altering inclination outside of the context of the particular equation in the OP. In isolation it is incorrect to say that there are "only two possible ...
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### Mars transfer window frequency

You both are really right. A nominal Hohmann transfer takes 257 days (0.7 years). It is the least possible energy. However, Zubrin in the book cited recommends a 180 day transfer, which uses a little ...

### Could we use Mars as as an asteroid mining base?

The main benefit of Mars for asteroid mining would be for accessing asteroids that are further out, not ones that are closer to Earth than Mars itself. Transporting propellant from anywhere else to an ...

### Would the Dzhanibekov effect be a problem for Von Braun Wheels?

Starting with a circular wheel spinning on its axis of symmetry (maximum inertia), can one then add masses in such a fashion that the conserved angular momentum ends up on an intermediate axis? The ...
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1 vote

### Optimal numerical method to solve BVP for optimal low thrust control

ESA's PyKep will likely work very well. It allows you to solve lots of BVP, model low thrust propulsion, load SPICE files, etc.
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1 vote

### Could we use Mars as as an asteroid mining base?

If you can build a space elevator then you've just removed any need to use Mars or anywhere else other than Earth as a base for exploration/exploitation. With the massive cost of lifting materials to ...
• 19k
1 vote

### NASA GMAT: Any good tutorials or methods to learn how to use patch points and control points to come up with viable and optimal trajectories?

I started using GMAT last week and I am roughly at the same point you were when you posted this message. I am trying to create a Low Energy transfer to the moon and trying to get the optimum launch ...

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