Upon leaving Duna, the plan is to separate from the main fuel tank just before reaching a stable Duna orbit, to reduce space junk.įigure 6 shows the service module. The lander's main fuel tank must contain enough fuel to land on Duna (fortunately that will be assisted a little by the parachutes), and enough fuel left to almost reach a low Duna orbit. But this time, all the science and most of the lander will ultimately be left behind on Duna. In more recent versions of KSP (0.24 or later), I might have considered bringing all the science back to Kerbin, not only for the science, but also for the increased funds. Like before I used the "Action Groups" for conveniently toggling all ladders using a single key. The goal is for the Kerbals to do EVA on Duna and collect all the science available, and bring the science data back up to the command pod. The extendable ladders are the rectangular things on the Aux Service Module, another on the lander's main fuel tank, and then one on each of the three science bays (you can see one on the science bay to the right). What's not pointed out in Figure 4 are the extendable ladders. Once we take off from Duna, they will be ejected to reduce mass/weight. Note that the science bays (Figure 4) are attached to the lander with the radial decouplers. There wasn't any funds in version 0.23.5, which is why the returning portion of the craft is so minimal. You get extra "funds" for the recovered parts in version 0.24 or later, so the more you successfully bring back, the more funds you can recover. If I was designing this in KSP version 0.24 or later, I might have chosen to bring more back to the surface. This is ideal for our planned descent to Duna, getting everything we can from the thin atmosphere for braking.īecause all these parachutes will be used twice, I have also configured their deployment using "Action Groups." I have set the key '0' to trigger the deployment of the "Mk25 High Altitude Parachute" and the key '9' to trigger the deployment of all the rest of the standard parachutes. "Mk25 High Altitude Parachute" does not have as much drag when fully deployed as standard parachutes do, but it has greater drag when not fully deployed and at higher altitudes and lower pressure (compared to standard parachutes that are not fully deployed). Duna has a very thin atmosphere, yet we want to utilize atmospheric drag as much as possible during the descent. Duna has a very thin atmosphere, and we are going to rely on parachutes to do most of the braking on the descent to Duna. The "Mk25 High Altitude Parachute" has Duna written all over it. They serve a double purpose and will be used twice.
The parachutes on this command module section are not only used for a safe descent back to Kerbin, but will also be used for descent on Duna. I'll make note in the text of any changes I might have made for 0.24 on up (the latest KSP version is up to 0.24.2 at the time of this writing).
Kerbal space program parachute burns how to#
Demonstrate how to leverage the Oberth effect even for an underpowered (low thrust) rocket stage, and explain why high thrust is more of a convenience, rather than a necessity, once in space.Touch on the topic of Gravity assists a little and distinguish gravity assists from the Oberth effect.Introduce the reader to the Oberth effect.But it's a long journey, and I figure the Kerbals could use company). Design the ship to for a comfortable trip - not wasteful, but not necessarily minimal either (if instead we were to only send a single Kerbal, the rocket could be made much smaller and cheaper.Bring two or three Kerbals to the surface of Duna and bring back all sorts of science.So let's go to Duna! ( Duna is Kerbal Space Program's analogue of Mars.) Here are some mission requirements that I set out for myself:
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