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Questions tagged [orbital-maneuver]

In spaceflight, an orbital maneuver is the use of propulsion systems to change the orbit of a spacecraft.

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Can a solar sail craft change an orbit's inclination (from polar to equatorial)?

How much maneuvering can you do with a solar sail in space? Can you change your inclination (go from a polar orbit to an equatorial) in a single star system? Can this be done in a binary system?
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Is a braking maneuver more effective at periapsis?

Although my asking this question now was inspired by this one, it's a question that's occurred to me before in the context of orbital capturing. Another way to put this might be: is there an ...
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Can spacecraft rendezvous in orbit on planetary missions

Since we have yet to lose personnel onboard the ISS due to starvation, I assume that space agencies have got a good handle on the mechanics for a rendezvous in low earth orbit. What would be the (...
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Is a lunar Sun-synchronous orbit possible at the “frozen” inclination of 86°?

I have been considering if it would be possible to place a satellite in a Sun-synchronous orbit in one of the lunar frozen orbits at 86°. According to NASA scientists there are four inclinations for ...
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Is this really Rosetta's orbit around 67P?

From this link I fount the following representation of Rosetta's orbit relative to 67P: A video from ESA depicts a similar orbit. My questions are: is that really the relative orbit? If yes: why ...
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How is space assigned for satellites that follow intersecting orbits?

Assigning slots to different satellites in various polar orbits seems very difficult on account of them passing over the North Pole. This loose intersection seems like the place where mission errors ...
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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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Is a manned craft powered by Solar Sail feasible from Earth Orbit to Lunar Orbit

Trying to ask a series of questions but I'm breaking up the overall point into easier "chunks" to not make the overall question too broad. Question 1: Designing a craft for transfer from Earth to ...
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Oberth effect for Earth vehicles

I don't understand this and must ask a probably very stoopid question here: The Oberth effect says that a rocket is much more efficient when (and in the orbital direction of) a payload when it ...
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What would your altitude be after you had achieved escape velocity from the moon?

I have been trying to work out how much ΔV would be required to deorbit a spacecraft after it had achieved escape velocity from the moon but I don't know how to work out what the radius of the orbit ...
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Mars Orbit Upon Intercept

I'm running a numerical simulation that calculates an interplanetary trajectory from Earth to Mars, and I'm trying to get a spacecraft into an orbit about Mars upon intercept, but am having a little ...
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Could another celestial body make a bi-elliptic transfer significantly more efficient?

Could using the gravity of another celestial body allow for something like a bi-elliptic transfer that uses less delta-v than the theoretical "infinite apogee" delta-v requirement? If yes, has such ...
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What precision is needed for aerocapture?

In his excellent answer to the question of how we make a round trip journey to Mars, @MarkAdler mentions that aerocapture would be used to get into orbit around Mars, saving fuel and therefore weight. ...
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Calculating position of a body after a velocity change

If I have a body $\text{A}$, which is orbiting a more massive body $\text{B}$, and I increase $\text{A}$'s velocity, I'd like to be able to calculate $\text{A}$'s new position after some time. I have ...
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What are the requirements for $ɣ$ shape flyby?

Understanding Kepler's laws, a body with speed exceeding escape speed of a major body will move in a hyperbolic trajectory, entry and exit vector, a "less than ellipsis" curve. You don't get closed (...
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Cause of ISRO MOM's LAM shutdown during the 4th orbit raising manoeuvre

The 4th orbit raising manoeuvre of ISRO's Mars probe (MOM or Mars Orbiter Mission, informally called Mangalyaan) did not go as planned, as the LAM (Liquid Apogee Motor) shut down prematurely. ...
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Are there any remaining spacecraft that can retrieve objects from Earth orbit?

Now that the Space Shuttle has been retired, are there any spacecraft available that can retrieve an object from orbit and return it safely to Earth? What would be the maximum size of such an object?
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What is the flight plan to get Gaia in orbit around the Sun–Earth $L_2$ Lagrangian point?

Gaia is a planned European Space Agency's (ESA) space observatory that will aim to chart a three-dimensional map of our Galaxy, the Milky Way. It is planned to operate around the Sun–Earth $L_2$ (SEL2)...
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How are retrograde orbits attained?

If a satellite is to be inserted into a retrograde orbit (opposite to Earth rotation direction) is it accelerated straight in the desired "westwards" direction until (after overcoming Earth rotation ...
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Why are orbit raising maneuvers for Mangalyaan done in the early hours?

I was reading this news article, and it was mentioned that orbit raising is done in early hours. In all the five orbit raising operations, they are raising them only during night. What could be the ...
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Why should space probes have to orbit the Earth before being launched at other planets?

I'm curious to know why any satellites that need to be sent to other planets should be moving around the Earth rather than directly going towards their destination? Today, India launched one satellite ...
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Approximately how much fuel will ISRO Mars Orbiter have available when it enter Mars' orbit?

मंगलयान (Maṅgalayāna) is due to launch on November 05, 2013 AD of the Gregorian Calendar at 1436H (GMT+0530). Wikipedia writes to say The November 2013 launch will place the Mars Orbiter Mission ...
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Why did the recent Sirius FM6 launch use such a high inclination?

Earlier today a Proton-M rocket took off, carrying a Sirius FM6 satellite radio payload destined for geosynchronous orbit. Nothing super exciting, Briz-M upper stage for transfer burns and then the ...
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Could Earth-lunar flybys be repeated consecutively without the use of propellant?

Ever since a recent orbital mechanics question, lunar flybys have been nagging me in the sense that there is obviously energy available in the system. I'm interested if you could get a repeatable ...
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Falcon 9 1.1 demo flight (flight 6) - Was the second stage burn meant to test deorbit?

On F9 flight 6, the first demo of the V1.1 configuration, the putative rationale for the extra second stage burn was to demonstrate relight capabilities for Geosync, and really, any orbit that ...
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Can I get higher with Space Junk?

There is a whole bunch of space junk; Wikipedia says there are about 19,000 pieces of junk being tracked. With no clouds, solar energy is readily available, so the biggest missing ingredient for ...
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Does a mission to Venus orbit require less propellant than a similar mission to Mars?

Gravitational attraction is determined using G (m1m2)/r^2 Which indicates the force is inversely proportional to the square of separation of the bodies Of the terrestrial planets Mercury, Venus, ...
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Delta-V chart mathematics

Could someone explain me the mathematics behind the Delta-V charts one can find on internet such as:                 &...
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Cargo delivery from the ISS to Tiangong

Consider I have a 10 kg object I want to deliver from the ISS to Tiangong-1 station. The object can not go through the land and launch again cycle. Can any of the present day spacecrafts do the ...
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How does the gravity of a massive non-spherical object act on things around it?

Firstly, not sure if this question ought to be in the physics SE site. Please let me know if it should. Secondly, I don't know a whole lot about physics (I'm just inquisitive). So please try to keep ...
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How to calculate delta-v required for a planet-to-planet Hohmann transfer?

How do you calculate the delta-v required to do a Hohmann transfer from a circular orbit around one body to a circular orbit around another? I'm assuming you'd need to know the masses of the two ...
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What range of orbital elements was available for the Space Shuttle?

What range of orbital elements (inclination, apogee, eccenticity) was available for the space shuttle? What range has it really achieved? What were the engineered limits?
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What is a gravitational slingshot?

Gravitational slingshot is proven to be one of the best ways to accelerate an satellite. But how does it actually help accelerating a satellite? During this process, will satellites use chemical ...
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Where could you go in a 20km iron asteroid?

We know from this question that an asteroid 20 km in diameter is feasible as a hollow space habitat. There are many variables in real life, but assuming you had a spherical solid iron asteroid 20 km ...
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How are flight plans calculated?

When a project like Rosetta is being developed, how are flight plans calculated? Do planners simply input the desired target into a program or a flight computer which spits out the optimum flight path ...
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Can you tack against the sun using a solar sail?

Solar sails are a great, inexpensive way to move out from the sun, if you’re not in a hurry. Ocean going ships are able to tack against the wind, and to move up wind. Could a solar sail gain inbound (...
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Could a partial space elevator be practical and useful?

Would it be technologically and economically practical to build and operate a space elevator that only provided transport between lower and higher orbital paths? Such a mechanism would only avoid ...
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How much adjustment of position is required when making long flights through the solar system?

It is hard enough to exactly aim a rocket when you know all the forces on it, but on a long journey there must be any number of minor gravitational attractions to rocks and other mass in space, and ...
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What creative orbital maneuvers might I do to save fuel for a geosynchronous spacecraft?

I've heard that there might be some creative ways to get to Geosynchronous Orbit that could save a lot of fuel. How might I manage to make this happen?