Skip to main content

Questions tagged [low-energy-transfer]

Questions on trajectories that allow spacecraft to change orbits using very little fuel.

Filter by
Sorted by
Tagged with
3 votes
2 answers
267 views

How are Interplanetary Transport Network/Weak Stability Boundary paths calculated?

While reading up a bit online, I found out about Weak Stability Boundaries and the Interplanetary transport network. How is this "path" that traverses the Solar System determined? I am aware ...
hi-bye125's user avatar
  • 404
4 votes
1 answer
179 views

How would one identify ionic thrust vs chemical thrust in an orbit transfer?

My nomenclature might be a bit off, I’m no expert but I’ve been reading to solve the question all the same. Say we detect an orbit transfer based off ephemeris records. We can get the 6 classic orbit ...
Dylan's user avatar
  • 321
7 votes
2 answers
2k views

How high did Philae bounce?

The Philae lander bounced off 67P/C-G due to low gravity, but how high did it actually bounce?
Mar's user avatar
  • 73
5 votes
3 answers
2k views

Are there any paths in the Interplanetary Transport Network that leave the solar system?

As a (very late) follow up to this question, I wondered if there are any ITN paths that leave the solar system altogether? Articles about this seem to be concerned with low energy transfers of ...
Dave Gremlin's user avatar
  • 2,961
4 votes
1 answer
112 views

To go from LEO to LLO describe a Bi-elliptic/Hohmann transfer burn sequence?

Being a newbie, I humbly submit the following question : How to minimize the energy (in terms of delta-v burns) to transfer a mass of 1 metric ton (1000kg) from Very Low Earth Orbit (say 200km above ...
C. Burns's user avatar
  • 111
5 votes
1 answer
2k views

Are there any studies about "ping pong" cyclers between gas giants?

Imagine arriving at Saturn, jettisoning your passenger cargo, and then utilizing the massive gravitational pull of the gas giant to slingshot back towards Jupiter. Due to the immense mass of these ...
Enoch's user avatar
  • 317
2 votes
0 answers
49 views

What is the substantial difference between transit orbits and manifold trajectories in the frame of circular restricted three body problem?

In my MSc thesis I faced the problem of unstable hyperbolic invariant manifold trajectories (UHIMs) emanating from planar Lyapunov orbits around two collinear Lagrange points L1 and L2 of the Sun-...
g_don's user avatar
  • 433
5 votes
2 answers
413 views

Would it be practical to fly a probe to Mars using gravitational assistance from Venus?

I decided to fly to Mars in KSP using a slingshot of Venus to see if I could save fuel. Since Venus is closer to Earth, you need less fuel to get there. When I tested it I used less fuel, but the ...
The Rocket fan's user avatar
2 votes
0 answers
129 views

What is this figure I have obtained from this MATLAB code around Earth-Moon Lagrange point 2?

This is part of the code I used, where EM: Earth moon ...
Aabha Awere's user avatar
2 votes
0 answers
53 views

Which spacecraft have entered lunar orbit through L1?

I'm examining entering lunar orbit through the Earth-Moon L1 point with low-thrust propulsion. As part of this, I'm interested in all examples of spacecraft (both actually flown and ones that didn't ...
NeutronStar's user avatar
  • 1,049
6 votes
1 answer
501 views

Why does the Buzz Aldrin Mars Cycler not play a larger role in planning for Mars exploration?

In 1985 Buzz Aldrin AKA “Dr. Rendezvous” proposed using a pair of space station habitats in solar cycler orbits as “Up and Down Escalators” for crewed Earth-Mars transfers. https://en.wikipedia.org/...
Woody's user avatar
  • 22.4k
4 votes
0 answers
96 views

Is there a known solution for optimal impulsive transfer between two arbitrary elliptical orbits?

If not, what optimization methods or tools do people use? (Code libraries?)
3uluner's user avatar
  • 41
2 votes
1 answer
152 views

Travel time from lunar orbit (EML2) to Jupiter using skyhook only?

I am doing background research for a science fiction story, and hoping someone can help with this navigational question. Voyager 2 reached Jupiter from Earth in about 2 years. However (if I understand ...
Crystal E's user avatar
4 votes
1 answer
391 views

Range of travel time between particular planets using the Interplanetary Transport Network/Interplanetary Superhighway?

I understand the Interplanetary Transport Network allows for travel at low speeds between different planets in the solar system using very little energy. Is there flexibility in how long it would take ...
Bob516's user avatar
  • 6,999
3 votes
1 answer
578 views

What is the cheapest possible way to land a crew of 2 on the moon?

During the Apollo moon missions, a single very large rocket sent both the Apollo CSM and the LM to the moon in a single shot and it took only around 3 days to get there. However, after the Apollo ...
user7324674's user avatar
3 votes
1 answer
128 views

What does the term "libration point gateway" mean?

In the Circular Restricted Three Body Problem, natural paths exist between periodic orbits or the libration points that have negligible cost. These are commonly known as free transfers between ...
John's user avatar
  • 1,377
2 votes
1 answer
319 views

Is the Jacobi constant stationary along a periodic orbit?

In the book called "Chaotic Worlds: from Order to Disorder in Gravitational N-Body Dynamical Systems", link here, the author states that if the dynamical system has an integral of motion which is not ...
John's user avatar
  • 1,377
7 votes
1 answer
600 views

Venus-Mars-Venus cycler?

Is it possible to create a cycler that can travel from Venus to Mars, then back to Venus? Using as little delta-V as possible. To expound a bit further, it would need to travel from Venus to Mars ...
mzs.112000's user avatar
2 votes
1 answer
261 views

Trajectory Optimization To The Moon (Case Study: Chandrayaan-2)

People always ask this million dollar question of " What is the best path/trajectory to take to reach a certain orbit or point in space". Chandrayaan-2 had a pretty neat transfer to the moon, it took ...
John's user avatar
  • 1,377
8 votes
1 answer
173 views

Why haven't there been more space missions that use low-energy trajectories?

The Wikipedia article on low-energy transfers lists only 4 spacecraft over the past decades that at some point of the mission navigated low-energy trajectories, yet there has been extensive research ...
user avatar
0 votes
1 answer
86 views

Is it possible to change to different orbit inclinations with a simple push?

Supposedly launching to different orbital inclinations is quite difficult, with launchers trying to launch from different launch sites to using mid air launches to avoid geographic restraints. If a ...
Rajath Pai's user avatar
  • 1,251
2 votes
0 answers
61 views

Need help with selecting research papers for Cycler Trajectories

I have been reading small articles on Cycler trajectories and have found it to be quite interesting. So, I was wanting to do some research work in this area and I need help in acquiring research ...
Suraj's user avatar
  • 147
3 votes
1 answer
508 views

Low arrival V-infinity?

So I am modelling an Earth - Mars low thrust trajectory in a simple manner. I'm telling my model to not model any trajectories where the spacecraft is moving any more than 200 m/s quicker or slower ...
Harvey Rael's user avatar
1 vote
0 answers
327 views

MATLAB optimization script for Low - Thrust trajectory

I'm trying to write a script for a 'shape based' trajectory, based on the exponential sinusoid shape, for an Earth - Mars transfer. Essentially, I know where I want to start, and I know where I want ...
Harvey Rael's user avatar
6 votes
0 answers
210 views

Locally optimal control for low thrust transfers with J2 and other Earth perturbations

Background As detailed in this answer low thrust optimization is subject of ongoing research. There are a few closed-loop control laws which allow to achieve a locally optimal (but close to globally ...
ChrisR's user avatar
  • 6,180
5 votes
1 answer
2k views

Is the Uphoff-Crouch cycler orbit with 3 passes impossible?

A previous question I asked here got clarification on the Earth-passing phases of the Lunar Cycler orbits that use the "backflip" maneuver. It came up in the book Artemis, and it used the name Uphoff-...
AlanSE's user avatar
  • 16.3k
4 votes
1 answer
223 views

Secular variation of orbital elements and influence of force components

According to (Burt, 1967)[1], the transverse component of the perturbing force (that is: contained in the plane of the orbit and perpendicular to the radius vector) is the only one that affects ...
user avatar
4 votes
1 answer
444 views

Electromagnetic accelerator in space

Let's imagine there are already interplanetary spacecrafts and travel. Would it be possible to create electromagnetic accelerator somewhere in the outer space? It would work this way: There would be ...
Tom11's user avatar
  • 613
10 votes
4 answers
2k views

Change of inclination using low thrust

I am studying low-thrust maneuvers, in particular a change of inclination only. According to (Ruggiero et al., 2011)[1], if one writes the perturbation force in the Gauss planetary equations in terms ...
user avatar
5 votes
1 answer
609 views

How does bi-elliptic transfer compare to Low Energy transfers / Interplanetary Transfer Network?

I know this is a bit of apples-to-oranges comparison, since bi-elliptic transfer is a purely mathematical construct in a two-body problem, while ITN is a great "maze of opportunities" based on the ...
SF.'s user avatar
  • 55k
15 votes
7 answers
10k views

Transfer between elliptical orbits

For circular orbits the most efficient transfer is achieved with a hohmann transfer or a bi-elliptic transfer. But what is the most efficient way to transfer between elliptical orbits? I assume in ...
Roman Reiner's user avatar
0 votes
0 answers
182 views

Do all spacecrafts first enter orbit and then transfer to another body? [duplicate]

I would like to know if all spacecraft that have visited other planets first orbited our own planet and then performed an orbital transfer, or if there have been some that just went directly to the ...
Alan Q's user avatar
  • 9
11 votes
1 answer
1k views

Low Energy Transfer within Earth-Moon system

Practical aspects of a total low energy transfer to the Moon have been seen in missions like GENESIS, which uses Weak stability Boundary legs of Earth and Sun to reach ESL-2. This four body model ...
Kuldeep Barad's user avatar
3 votes
1 answer
160 views

Gradulated Accelerated Transfer

Background In airports and shopping malls multiple, parallel moving "slidewalks" allow people to increase their velocity from a low speed to a high speed. Overview Consider the following image: ...
Dave Jarvis's user avatar
13 votes
4 answers
1k views

What is the least energetic trajectory design to send uncrewed supplies to Mars?

Both Mars One and NASA have suggested sending uncrewed supply ships to Mars as part of a manned mission or colonization. These payloads can take all the time they like, not being constrained by human ...
Jerard Puckett's user avatar
4 votes
1 answer
352 views

Gravity braking and orbit around same body in low energy transfers

I recently read the discussion in the question, Gravity Assist Braking that momentum degradation used while entering in the opposite direction to the body's rotation in the Hill's sphere of that body ...
Kuldeep Barad's user avatar
5 votes
1 answer
450 views

Are L1 to L2 and back "cheap" transfers/cyclers possible?

This paper studies transfers from halo orbit to halo orbit in the Jovian system. I wonder if there are any locally stable orbits connecting Earth-Moon L1 and L2 points. EDIT: One should also consider ...
Deer Hunter's user avatar
  • 11.4k
8 votes
3 answers
1k views

What is a hyperbolic rendezvous?

I am reading this paper about cyclers between Saturn and some of it's moons. In the beginning is discusses the Earth-Mars cycler as "suffering" from the "risky requirement to perform hyperbolic ...
Stu's user avatar
  • 5,928
6 votes
1 answer
787 views

Cyclers To Mercury?

Is it possible to establish a practical 'cycler' transportation system between Earth and Mercury? The concept involves a small, manned payload (7.5 mt or less) doing the Earth departure and Mercury ...
MercuryPlus's user avatar
13 votes
2 answers
2k views

Is it possible to "map" the Interplanetary Transport Network?

Cartographers have always been valued members of any exploration team. Even the teenage George Washington had experience with the "compass and chain." Every Terra Incognito is in need of a good map. ...
Jerard Puckett's user avatar
13 votes
1 answer
2k views

What does the BackFlip lunar cycler do in its pass by Earth?

This paper describes an Earth-moon cycler orbit. In this concept, a 180 degree "BackFlip" is used to modify a more simple cycler orbit. However, I can't figure out what cycler orbit it modifies, and ...
AlanSE's user avatar
  • 16.3k
40 votes
4 answers
7k views

What uses would the Aldrin-Cycler have?

An Aldrin-Cycler is a vessel on an orbit on which it passes both Earth and Mars every few years without expending much fuel. At first glance this seems like a great thing for a permanent ...
Philipp's user avatar
  • 9,356
19 votes
1 answer
875 views

How much of the Interplanetary Transport Network is currently known?

The Interplanetary Transport Network is a network of mathematically-defined paths through our solar system that would require little to no energy for a spacecraft to follow them, albeit at very low ...
Gwen's user avatar
  • 2,917