Kerbal Space Program 1.0 Scenarios 3

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TroZ

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Published on May 8, 2015 12:03:10 AM ● Video Link: https://www.youtube.com/watch?v=YvAMeKi8BHg

Game:

Kerbal Space Program (2015)

Duration: 1:26:45

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2

I'm continuing playing the Scenarios included with Kerbal Space Program 1.0. This time I'm playing 'Impending Impact' and 'Mun Orbit'. I'm playing on version 1.02 which was released shortly before this was recorded.

'Impending Impact' has Jeb in a small rocket on a collision course for the Mun, and tasks you with getting Jeb home. The rocket only has 5.74 units of fuel and is not yet in the Mun's influence. I immediately begin to play with a maneuver node attempting to find the smallest burn that will have us miss the Mun. I find one that puts us 12 km above the Mun's surface for about 40 m/s of thrust. I perform the burn, but we wind up with a 17 km periapsis.

As we approach the Mun, I begin to think a burn a periapsis may help with some efficiency in returning to Kerbin. I try to plan a maneuver to get us back to Kerbin. After several attempts, I find on that will get us to hit the Kerbin atmosphere. This results in a burn on 150 m/s which I think is just about at the limit of what we have left.

We get to periapsis and start the burn. It's close, but we run out of fuel with 9 m/s left in the burn, leaving our Kerbin periapsis at 163 km!

At this point, there is only one thing to do, get out and push. the rocket doens't have RCS thrusters, but it does have RCS fuel for the suit pack. Jeb gets out, flys behind the rocket, and pushes it in the direction we were thrusting. He does this until he is almost our of fuel, and then re-enters the capsule. Looking at the map now, we are going to impact kerbin. While we are returning home, we may have over did it and might be re-entering too quickly now!

We time warp to Kerbin. As we enter the atmosphere, we drop the engine stage. It appears that we will be landing somewhat near KSC. As we re-enter, two solar panels over heat and explode, but we are otherwise ok! We pop the parachutes at 4 km, and safely land north west of KSC.


Next I play the 'Mun Orbit' scenario. This has you in Mun Orbit with an Apollo-style lander and command module docked together, and tasks you whit landing on the Mun, returning to the Command module, and then returning the command module to Kerbin.

I attempt this scenario, and move Jeb and Bob over to the lander. We undock, slow a bit, and plan a landing in a nearby large crater. As we approach, I stop most of our horizontal velocity as I normally, but I leave a bit as we are over what appears to be the wall of a smaller crater, which would be hard to land on. As we move over flatter ground, I perform a maneuver to stop the rest of our horizontal velocity, so we are going straight down without drifting. As I finish that maneuver, I notice we are dangerously close to the ground moving quickly, so I aim up and go to full throttle to slow down. Unfortunately, it's not nearly enough, and we hit the surface at about 140 m/s and there are no survivors.

So I restart the scenario, and do the same initial things. We actually almost end up over the exact same small crater. This time, however, we stop out horizontal velocity at a higher altitude, and we slow to under 50 m/s at 6 km. We have to move to the side a bit here to avoid the edge of a crater, but we are at much more controllable speeds this time.

We safely land with a bit under 1/2 our fuel left. We EVA, collect some science and get ready to return to orbit. We time warp a bit to lent the command module got about 3/4 the way around an orbit before lifting off.

We lift off heading east, trying to get in a orbit of at least 15 km. We actually get an apoapsis of 22 km, as the four outer fuel tanks empty, allowing us to drop them with one tank remaining. We circularize the landers orbit, and then focus on the command module to maneuver it to the lander, as it has RCS thrusters that the lander lacks.

We have the command module perform a burn to lower one side of it's orbit so that we will catch up to the lander in an orbit. We perform the burn, and then do almost a complete orbit before catching up the the lander. We get within 400 meters, and match speeds. We then aim at the lander, and head towards. It takes a few maneuvers, but we dock with it, and transfer the crew and science over to the command module. Not needing the lander anymore, we undock it.

We then plan a burn back to Kerbin. This will be a 265 m/s burn. we perform it and head home.

As we enter the atmosphere, we are over KSC, and so we'll land far to it's east. We retract the solar panels, and then drop the engine stage. We cross the ocean east on KSC and are coming up on a peninsula as we near 20 km in altitude. As we get over it, I think it would be better to land on land, and so pop the parachutes to slow us down so that we won't over shoot the land. Unfortunately, they open and are immediately destroyed! Had I waited until 10km, everyone would probably have lived!

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