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Questions tagged [kerbal-space-program]

Questions related to a popular space game. USE WITH CARE! Try to ask questions that can be applied to reality and not be game-specific.

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65 views

Is there a flight simulator showing the gravity well of the Earth and Moon? [duplicate]

I tried the Kerbal Space program and could not get it working on my CPU. Is there a chart or program that is light weight that I can run simulations on?
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2answers
4k views

What are “Ohms burns” in the context of Scott Kelly, KSP, and the Space Shuttle?

The Ars Technica video Astronaut Scott Kelly teaches orbital mechanics with Kerbal Space Program (also in YouTube) is a little bit humorous. When Scott Kelley is talking about orbit circularization ...
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3answers
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Are patched conics (and by induction, KSP) “useless” for simulating ion propulsion?

My previous KSP question What can the KSP game actually teach about spaceflight and orbital mechanics, and what are its limitations? resulted in some really productive discussions and under-the-hood ...
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0answers
137 views

Optimal thrust vs isp for variable isp rockets (VASIMR) when taking off/orbiting

This question was initially inspired through playing Kerbal Space Program, however I am seeking a more general answer. I've been playing the excellent Near Future Propulsion mod for KSP, using ...
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1answer
180 views

How do I calculate the delta-v with patched conics?

I am trying to calculate the delta-v between Kerbin and Duna from a 70 km circular orbit around Kerbin just to do a flyby of Duna. However, I am running into a couple of difficulties with my ...
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3answers
685 views

Lowest delta-v maneuver to reverse the direction of a satellite in LEO?

Part of this answer was inspired if I remember correctly from a question about how to reverse the direction of a satellite in LEO with the minimum delta-v. Whether this was the original question or ...
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7answers
15k views

What can the KSP game actually teach about spaceflight and orbital mechanics, and what are its limitations?

I have seen at least several different users mention that they've found Kerbal Space Program helpful to understand issues of spaceflight and orbital mechanics. According to Wikipedia: While the ...
3
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1answer
906 views

Finding Delta V to circularize orbit after a transfer orbit.

I have been working on calculating all the the delta V needed to fly a rocket from one planet to another. I have worked out the delta V needed to raise the orbit to intercept the second planet, but ...
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1answer
283 views

The relationship between the altitude of an anti-radial burn on apogee

I recently conducted an experiment using Kerbal Space Program to analyze the effect of burn altitude on orbital properties. Unfortunately im a bit of a rookie when it comes to orbital dynamics so I'd ...
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3answers
642 views

Burn spare oxidizer or carry it along?

Okay. This is not directly related to actual space travel, but it is semi-related, and definitely a practical, actual problem I face. It's about Kerbal Space Program and SSTO spaceplanes. And I ...
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3answers
2k views

Why are optimal launch TWRs so different in KSP than on earth?

In Kerbal Space Program (KSP), optimum thrust-to-weight ratio (TWR) is around 1.5-3. When looking at NASA, SpaceX, Blue Origin spacecraft, the launch TWR is around 1.25-1.3. Is it because the ...
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3answers
2k views

Multiple aerobraking

I have spent a lot of hours with Kerbal Space Program recently and I am curious about one thing. I got into orbit around the Moon and then I was able to get back to an orbit of "Kerbin" (the home ...
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3answers
794 views

Alternator/generator on launcher engines?

In Kerbal Space Program, most liquid fueled engines include a generator which provides electricity to systems on the rocket, keeping the batteries topped up while on ascent. Do any real rockets (...
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1answer
507 views

Intercepting an object on flyby past Earth?

Suppose we detect an object on an orbit that will pass close to Earth, entering our SOI, but escaping after just a few days. If we wanted to mount a mission to intercept that object, how would we go ...
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3answers
3k views

How is an orbital rendezvous planned?

I'm curious how people plan an orbital rendezvous. This question explains the basic principles, but not in enough detail for me to understand how it actually works. From playing Kerbal Space Program, ...
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2answers
4k views

How many burns did the Apollo 11 mission need?

I'm wondering just how many burns the Apollo 11 mission required. Did they first have to reach a circular orbit around Earth by a single burn at apogee or did they target the Moon immediately? Then, ...
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1answer
4k views

Calculate Delta-V for a Hohmann transfer to a higher orbit

I am wondering if anybody can help me with calculating Delta-V in Kerbal Space program? I have a ship in circularized 100 km orbit around planet Kerbin. Planet's radius is 600 km (standard ...
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2answers
24k views

How realistic is Kerbal Space Program?

Kerbal Space Program is an independent spaceflight simulation game, which has become quickly popular due to being (kind of) precise at simulating actual spaceflights. But how precisely? How close is ...