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Questions tagged [interplanetary]

Questions regarding spacecraft designed to travel between planets.

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1answer
468 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 ...
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1answer
1k views

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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2answers
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What significance did Pioneer 10 & 11 have?

The images taken by Pioneer 10 and 11 were of much lower quality than those of later planetary probes. I wonder if this is representative also for their other instruments. For example, they don't seem ...
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1answer
300 views

Which parameter causes two launch times in a launch day?

Launch happens when trajectory plane contains launch site, launch asymptote and center of Earth. On a launch day there will be two launch opportunities, one at morning and other at the night. Which ...
14
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2answers
3k views

Space travel using constant acceleration drive: Earth to Europa

Long story short: I'm writing sci-fi and taking my protagonist to Europa. He's got 2 weeks to one month to get there from Earth, give or take a few days. That sounds, of course, preposterous in this ...
29
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3answers
4k 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 ...
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6answers
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How would we move Venus or Mars into Earth's orbital zone? [closed]

(See the more focused version of this question: How long would it take to move Venus and Mars into Earth's orbital zone using gravity assist?) What methods and time scales might be involved in moving ...
10
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1answer
610 views

Will the Mars Transit Vehicle need to include a water recycling system?

An NIH abstract writes to say A daily water intake of 3.7 L for adult men and 2.7 L for adult women meets the needs of the vast majority of persons. Mars One touts a crew-size of four with a ...
9
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1answer
456 views

3-Body Simulation and Accuracy of Lambert Interplanetary Solver

I've found that using a Lambert solver together with the equations of the patched conic approximation for an interplanetary flight from Earth to Mars is quite inaccurate, when taking Earth's ...
10
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1answer
625 views

Ephemeris data usage in interplanetary trajectory application

I'm trying to write a Mathematica application that allows users to choose their date of departure and time-of-flight for an interplanetary transfer mission (currently only working for Earth-Mars ...
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3answers
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Could India Send a Lander to Mars?

India has recently sent a small spacecraft to Mars, as a technology demonstration mission. It has also subsequently successfully demonstrated its much-delayed cryogenic upper stage engine with the ...
17
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3answers
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Why not travel to Mars in 2 months?

Just to clarify... I've made some research and generally know what the case is, didn't mean to make the question sound stupid... :) I know there is a thing called Hohmann transfer orbit, named after ...
8
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1answer
199 views

How would one come up with an optimal team-size for a manned interplanetary mission?

How big would a manned ascent stage for Mars need to be? assumes 3 astronauts. That question appears to draw inspiration from the Apollo programme, and the Soyuz evolution. Part of the rationale ...
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3answers
481 views

Can orbital debris be assembled into a module for space exploration?

Wikipedia writes to say Currently, about 19,000 pieces of debris larger than 5 cm (2.0 in) are tracked, with another 300,000 pieces smaller than 1 cm below 2000 km altitude. For comparison, the ...
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2answers
1k views

How do we make a round-trip journey to Mars?

I've been to Kennedy Space Center in Florida, where I saw the huge Saturn V rocket... This was used to get to people to the moon. It had a Lunar Module to propel itself on and off the moon's surface ...
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1answer
3k views

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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1answer
434 views

What plans does AEB (the Brazilian Space Agency) have for missions beyond GEO?

Besides the US, we focus a lot on Russia and China's space programs. India also gets a little attention. Brazil, Russia, India, and China form the BRIC group which is widely presumed to surpass G7 ...
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3answers
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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 ...
11
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2answers
746 views

Benefit of sling shot effect with a space elevator

The upper end of a space elevator is moving considerably faster than orbital speed at that distance from Earth. As a result anything released from the top of elevator would get thrown away from the ...
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1answer
270 views

How do long-flight space probe teams preserve the interest and the know-how?

Our knowledge of ballistics improves all the time: Multiple Earth-Venus gravity assists have become quite standard. We keep on planning and sending spacecraft to Lagrange points, and increasingly ...
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2answers
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Why will JUICE take 8 years to reach Jupiter, longer than any earlier spacecraft?

Galileo took six years from Earth to Jupiter. Cassini-Huygens took three years to reach Jupiter and six years to reach Saturn. New Horizons took one year to reach Jupiter. Juno was launched in 2011 ...