Marmilo
Retired Staff / Scale Inspector
TEAM HAWK
Atlas
Fly me to the Moon
Under Pressure
Copycat
Registered
MOTY 2022
Disclaimer: I did this quite some time ago, so I might not remember everything correctly
The atlas challenge is one of the 6 team hawk challenges. To complete it you have to launch 600t to Leo in a single buildscreen, without part clipping. It was really easy before the reentry update.
Here's my original Atlas mission
My Hawk Entries Thread
As you see, I had quite a bit of fuel left, and that was first try. (Technically second, but that previous one turned out to be 500t).
The problem
If you look at basically any atlas entry, you will see engines stacked on top of one another (not overlapping, just with the nozzle sitting right on top of a fuel tank).
This is an example of a heavy lift launcher (in the single buildscreen category), iirc this was from my Christmas challenge entry
See what I mean with those titans?
You see, a good rocket has somewhere around a 1:4 payload ratio (which means that the payload takes up about 25% of the launcher's mass. So, to launch 600t into Leo you will need a 2400t launcher. This sums up to 3000t of total mass. Now, the optimal launch TWR (Thrust to Weight Ratio) is around 1.2-1.4
Let's assume 1.2 in this case. To achieve this twr in a 3000t rocket, you need 3600t of thrust (3000 * 1.3 = 3600). A single titan engine has 400t thrust. So you will need 9 titans. Here's the problem: The reentry update doesn't let you stack engines vertically, and you can't fit 9 titans in one row in the buildscreen.
The solution:
MY first thought was to remove the sides of the launcher to make room for 2 extra titans (and their plumes). It looked a bit like this:
However, this launcher simply wasn't big enought to get 600t to orbit, so.. I had to take a different approach. I think we can agree that the buildscreen was simply too small to do it with the regular approach. So, I guess the solution is... Get more space! And no I will not be buying the expansion. This is what I came up with:
Now, if you don't look carefully you might say "oh but the titans will destroy a lot of stuff there"
Could you please repeat that?
Part 2 coming soon
The atlas challenge is one of the 6 team hawk challenges. To complete it you have to launch 600t to Leo in a single buildscreen, without part clipping. It was really easy before the reentry update.
Here's my original Atlas mission
My Hawk Entries Thread
As you see, I had quite a bit of fuel left, and that was first try. (Technically second, but that previous one turned out to be 500t).
The problem
If you look at basically any atlas entry, you will see engines stacked on top of one another (not overlapping, just with the nozzle sitting right on top of a fuel tank).
This is an example of a heavy lift launcher (in the single buildscreen category), iirc this was from my Christmas challenge entry
See what I mean with those titans?
You see, a good rocket has somewhere around a 1:4 payload ratio (which means that the payload takes up about 25% of the launcher's mass. So, to launch 600t into Leo you will need a 2400t launcher. This sums up to 3000t of total mass. Now, the optimal launch TWR (Thrust to Weight Ratio) is around 1.2-1.4
Let's assume 1.2 in this case. To achieve this twr in a 3000t rocket, you need 3600t of thrust (3000 * 1.3 = 3600). A single titan engine has 400t thrust. So you will need 9 titans. Here's the problem: The reentry update doesn't let you stack engines vertically, and you can't fit 9 titans in one row in the buildscreen.
The solution:
MY first thought was to remove the sides of the launcher to make room for 2 extra titans (and their plumes). It looked a bit like this:
However, this launcher simply wasn't big enought to get 600t to orbit, so.. I had to take a different approach. I think we can agree that the buildscreen was simply too small to do it with the regular approach. So, I guess the solution is... Get more space! And no I will not be buying the expansion. This is what I came up with:
Now, if you don't look carefully you might say "oh but the titans will destroy a lot of stuff there"
Could you please repeat that?
Part 2 coming soon
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