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Questions tagged [launch-trajectories]

For questions discussing trajectories taken by rockets during launch.

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1answer
156 views

Was the gravity turn used in early spaceflight?

Reading through the Wikipedia article about Gravity Turn, specifically the Use in spaceflight section, it seems that the Gravity Turn was not used in early spaceflight. Is that correct? For example, ...
7
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1answer
307 views

Are there any dog-leg hot-spots? Where are dog-leg maneuvers used most frequently?

Dog-leg maneuvers are nicely explained in @JakeBlocker's excellent answer. If you go there now (and hopefully come back here) you can see a diagram of a dog-leg maneuver along with a comparison to an ...
4
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1answer
217 views

For an Apollo Lunar Module Ascent Stage launch, what is the optimal profile of $\beta$ (or $\gamma$) vs time?

When Apollo astronauts departed the lunar surface in the Lunar Module's Ascent Stage, it appeared to rise vertically ($\beta$ = 0) for ~10 seconds and then begin the "tipover" (videos of Apollo 15, 16 ...
6
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1answer
60 views

Why do GTO launches from Baikonur launch to the northeast? [duplicate]

According to this article from Discover magazine, the flight paths of most rockets launching out of Baikonur pass over the Altai region of Russia (this has the side effect of large quantities of spent ...
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32 views

Rocket launch ground track mapper

I'm looking for a tool for plotting the ground tracks of rocket launches at particular inclinations from particular launch sites, but haven't found anything so far; can anyone help me with this?
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0answers
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Efficient trajectories from earth orbit to EML-1

What are the lowest delta-v trajectories a spacecraft could take from Earth to EML-1? (Earth Moon Lagrange point 1). provided the payload is massive. ( the amount of time it takes is not an issue)
7
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2answers
247 views

What planning tools and techniques are used to avoid collisions in space during launches?

What tools and techniques are used to calculate as well as to ensure a collision free trajectory when space junk as well as real live useful satellites are so numerous? While the chances of hitting a ...
2
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1answer
127 views

How and where can I determine the direction of a launch prior to liftoff?

How and where can I determine the direction of a launch? I live on the South Carolina coast and sometimes see a launch and sometimes it goes Southeast.
2
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1answer
235 views

What satellites were launched into a polar orbit from Cape Canaveral in the 1950s and 1960s?

Historically, most launches from U.S. soil that have headed into a polar or near-polar orbit have been launched from Vandenberg Air Force Base in California. However, in a recent article written by ...
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2answers
5k views

Optimal speed per altitude for orbit launch

On Kerbin, rockets have an optimal speed depending on altitude for maximum fuel efficiency, as You can save fuel by being close to your terminal velocity during ascent. Lower velocity wastes delta-...
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3answers
2k views

What is the highest inclination orbit ever attained from a Cape Canaveral launch?

The launch facilities at Cape Canaveral, FL are located at a latitude of about 28.5° N, so that puts a hard lower bound on inclinations from that site. I assume there are well-defined azimuth limits ...