Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Classifieds
Media
New media
New comments
Search media
Log in
Register
What's New?
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More Options
Advertise with us
Contact Us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
The Water Cooler
General Discussion
If you won a trip to space...would you go?
Search titles only
By:
Reply to Thread
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="MacFromOK" data-source="post: 3575445" data-attributes="member: 40864"><p>The estimated time frame to Mars varies according to source and practicality... <img src="/images/smilies/new/drunk.gif" class="smilie" loading="lazy" alt=":drunk2:" title="Drunk 2 :drunk2:" data-shortname=":drunk2:" /></p><p></p><p><strong>"Another challenge, intimately connected with fuel, is time.</strong></p><p><strong></strong></p><p><strong>Missions that send spacecraft with no crew to the outer planets often travel complex trajectories around the Sun. They use what are called gravity assist manoeuvres to effectively slingshot around different planets to gain enough momentum to reach their target.</strong></p><p><strong></strong></p><p><strong><em>This saves a lot of fuel, but can result in missions that take years to reach their destinations. Clearly this is something humans would not want to do.</em> </strong></p><p><strong></strong></p><p><strong>Both Earth and Mars have (almost) circular orbits and a manoeuvre known as the Hohmann transfer is the most fuel-efficient way to travel between two planets. Basically, without going into too much detail, this is where a spacecraft does a single burn into an elliptical transfer orbit from one planet to the other.</strong></p><p><strong></strong></p><p><strong>A Hohmann transfer between Earth and Mars takes around 259 days (between eight and nine months) and is only possible approximately every two years due to the different orbits around the Sun of Earth and Mars.</strong></p><p><strong></strong></p><p><strong>A spacecraft could reach Mars in a shorter time (SpaceX is claiming six months) but — you guessed it — it would cost more fuel to do it that way."</strong></p><p><a href="https://theconversation.com/how-to-get-people-from-earth-to-mars-and-safely-back-again-150167" target="_blank">https://theconversation.com/how-to-get-people-from-earth-to-mars-and-safely-back-again-150167</a></p></blockquote><p></p>
[QUOTE="MacFromOK, post: 3575445, member: 40864"] The estimated time frame to Mars varies according to source and practicality... :drunk2: [b]"Another challenge, intimately connected with fuel, is time. Missions that send spacecraft with no crew to the outer planets often travel complex trajectories around the Sun. They use what are called gravity assist manoeuvres to effectively slingshot around different planets to gain enough momentum to reach their target. [i]This saves a lot of fuel, but can result in missions that take years to reach their destinations. Clearly this is something humans would not want to do.[/i] Both Earth and Mars have (almost) circular orbits and a manoeuvre known as the Hohmann transfer is the most fuel-efficient way to travel between two planets. Basically, without going into too much detail, this is where a spacecraft does a single burn into an elliptical transfer orbit from one planet to the other. A Hohmann transfer between Earth and Mars takes around 259 days (between eight and nine months) and is only possible approximately every two years due to the different orbits around the Sun of Earth and Mars. A spacecraft could reach Mars in a shorter time (SpaceX is claiming six months) but — you guessed it — it would cost more fuel to do it that way."[/b] [URL]https://theconversation.com/how-to-get-people-from-earth-to-mars-and-safely-back-again-150167[/URL] [/QUOTE]
Insert Quotes…
Verification
Post Reply
Forums
The Water Cooler
General Discussion
If you won a trip to space...would you go?
Search titles only
By:
Top
Bottom