astroheiko

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About astroheiko

  • Rank
    Spacecraft Engineer

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  • Location Germany
  • Interests Astronomy, Speleology (Crawling in caves)

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  1. I have a nice picture for you again. In the background are Catullus, Gauss and Loki. Tarsis is really a gem. If you have the opportunity, visit him in any case. I was a bit cocky and almost lost my SSTO in a Methan lake. By the way - I'm glad you find my home country so beautiful. You can just believe me, the Germans can be funny - at night in the cellar.
  2. I finally got time to land on Tarsiss. When I am exploring, I am almost drowned.
  3. Before I land I mark all biomes. Then I change the orbit to land near the biome "Atoll". Next, I lower the PE to 100km for aerobraking. When entering the atmosphere, I set the SAS on Surface and Radial out to effectively brake. The descent continues forever so I set the SAS to Radial in to speed up. The low gravity is one of the main reasons for this. Then at least we have time to take pictures. Since I have far too much wings I can land only when I am slower than 10 m/s, otherwise, I pluck off and am back in the air. I open all cargo bays to have as much drag as possible. Immediately after landing, I begin with scientific investigations. To reset the Mystery Goo unit, I have to move the front chassis. By the way - I do not know why I have one - at 10 m/s landing speed. Then I set the flag and make a reminder photo. Tarsiss is really a gem. The crew goes back on board and I refuel again with ISRU. 14 days lasts, I only have the small Convert-O-Tron. I remember the ISP for this altitude - ISP at 3571m 160 LVN, 267 Spark. This could be important later, if I want to leave the moon again. Since the Methanlake is nearby, I also want to join this biom. So I release the brakes, roll down the hill and take off without doing anything at 15 m/s. Much to much wings. I glided so beautiful there for and when I reach the lake... NOOOOO! the plane drowned. Now I have SSTU- boat I quickly do all scientific experiments and activate all the engines I have. The ISP is now only 80 for the LVN. Thank goodness, the Spark here still has 250. At 13.5 m/s, I'm back out of the lake. Much to much wings ....I'm looking for a place on the shore to refuel, this action has quite a lot of fuel consumed. At the same time I can still visit the Highland and the Midland Biome. Here you can also see how I stowed the drill in the Cargo Bay. In order to drill, I must move however the rear chassis.
  4. I am planning a rendezvous with the mothership... ...and transfer all scientific experiments and the crew except of Jeb. Then I refuel the Catullusrocket and undock. Because I still need to catch the poor stranded Kerbal. After that, we go back to the mothership, fill the rest of the fuel into the lander, transfer the entire crew to the mothership and discard the rest of the catullus lander forever. Now I have to bring the Survey Probe into a polar orbit around Tarsiss. For a total of 610 m/s I get a nice polar orbit. In the orbit of Tarsiss I lowered the PE to 110km and could thus slow down in the atmosphere very nicely. Then I increased the orbit and performed Orbital Survey Scan. Now I know where I can refuel the Tariss SSTO with ISRU and plan a docking maneuver with the mothership. I take over the team and head to Tarsiss. For just 36 m/s I get an intercept. Where are my pictures? I think because I forgot to press F1. In any case, I lowered the PE at Tarsiss to 115km and reached again with aerobraking an orbit. Then I increased the PE again to get a stable orbit. The Tarsiss SSTO is now waiting for its deployment.
  5. It has worked ... it has worked ... it has worked ... The funny thing here has actually landed AND reached the orbit of Catullus - with ISRU
  6. I am struggling to design a spaceplane for Catullus. I want to bring 3 Kerbals with ISRU to the moon to explore all biomes. This is the best attempt so far. I have not built such a strange thing yet. I can not decide whether it is pretty or ugly. The aerobraking works in any case perfectly, it stabilizes itself and brakes beautifully. Nothing gets too hot. The landing also worked quite well, with 50m / s but a bit fast. ISRU also works. The return to orbit, however, gives me headaches. Before you have not reached at least 100km altitude, you can not really put the pedal to the metal. The atmosphere is furiously thick. That is why I have chosen a high TWR to reach this height as quickly as possible. But can not say whether this was really the right decision. One tank after another is blown off. Lastly also 4 of the 5 darts but the fuel is simply not enough. This was my best attempt so far. I guess I have to install at least 500 m/s dV. Or a higher starting point, or both. There really was not much missing, AP at 200 km, PE was already at -62km when the rocket fell dry. Orbit would be reached at 280km. I'll get you. Greetings
  7. I still have some nice pictures of the landing on Catullus. The rest I pack in the spoiler, I do not want to spam too much. I still have a lot more ... I really have to stop pressing F1 as often.
  8. I landed on Catullus. As always, I have far too many pictures, over 50. I show you but only the most beautiful / interesting. Dissolve the transfer stage and prepare to enter. Just before entering the atmosphere. At the rear you can see Gauss, Tarsiss and Loki fog of horror. A memorial photo for mum. Oops.... (The Ladders, Chutes, Airbrakes and Science were at decouplers) it is not too bad The Ascent has worked well. Orbit reached with 1621 m/s dV left. Greetings
  9. Now we will land, nothing can stop us now. I am separating the lander from the mothership... ... lower the AP, aim to a nice spot and lower the PE to 100km. Then I release the transfer stage, unfold the heat shield and activate the airbrakes. (I have been waiting extra with the landing to I have all the bodies in the background) Shortly before entering the atmosphere, the lander still has a surface speed of 3120 m/s. Somewhere at 200km then the entrance effects come. Everything remains beautifully stable. The entry into the atmosphere is by far not as extreme as with Eve. At 115km the speed has already decreased to 1524 m/s. The maximum negative acceleration is 1.8 G. Here I have already done some scientific research. At about 45km the parachutes release and I slow down to 223 m/s. Now the atmosphere really becomes a soup. The planets disappear in the fog. At 7000m the weather clears up again. The Lander has reduced its speed to 100 m/s. At 2750m the parachutes then open completely and the lander reaches its landing speed of 6 m/s. LANDED Science is first collected, then the devices are reset, and investigations are started again. Collect all and... ...say CHEESE...(In the background are Gauss, Tarsiss and the small moon is Loki) All Kerbals go back on board and then ... Oh my God! No panic. The fireworks were planned (Jeb insisted on a firework). I have attached all the ladders, parachutes, the airbrakes and scientific instruments to decouplers. Before the start, these must be discarded in order to save weight. Here I save first, it can always go something wrong. Before the launch I put the SAS on Surface and Radial out. So that I can see better if the tanks are empty, I have also brought them to the screen. Shortly after the start, the landing legs are still decpoupled. I switch the SAS to Prograde and tilt it slightly to the horizon to reach a Gravity turn. Since I must be very careful. If I tilt her too much, she would flip around. (As a tip for all who bring a similar rocket here, I recommend elevons or winglets to keep the course better. Vector engines would also go, but since the gravity is not so high, one does not necessarily need) The first stage is empty and we no longer need the Balast. At an altitude of 20km, the next stage is empty and is discarded. The rocket also does not lean too much - does not look bad so far. Here I have time to make a nice picture of the ascent. Shortly after reaching the 67km mark, the next stage is empty. The flight curve is a bit too steep, I wanted to have here about 45 degrees. Therefore, I do not load again, it will work. At an altitude of 100km and an AP of 200km I throttle the rocket to 1/3 thrust to flatten the curve. When the AP reached 280 km, I turn the rocket to the horizon and burn the rest of the stage and throw it off. Then I set at the AP a maneuver to bring the PE to over 280km - 1300 m/s. Done. Stable orbit over 280km and still 1621 m/s dV left. At my best test I still had more than 2000 m/s. Now I can go back to the mothership.
  10. All vehicles have now arrived at Gauss. I've done a lot of complicated maneuvers so that everything is in place and on time. This alone took more than 3 hours. I will spare you the pictures of the maneuvers, whoever wants to - can see them in my report. The Catulluslander was docked on the mother ship and the Crew ist waiting until everyone else is in their orbit. The Survey probe has started its work. And the Tarsiss SSTO was also taken around Gauss in a parking orbit at Catullus. Also, I have just received this offer. So lucky for the poor guy that I have enough space.
  11. Slowly it becomes serious, All vehicles have now entered Gauss in the corresponding parking orbits. Also, I have just received this offer. So lucky for the poor guy that I have enough space. Now I'll land on Catullus. Hopefully it will work. By the way - I am seriously considering whether I am developing like a spaceplane for Catullus. Do you think that would be possible? Maybe something with a Surface TWR of 1.2 so you can start like a rocket. From 45km then LVN would come to work? Greetings
  12. Today there are many pictures and boring maneuvers. Soon it gets serious - we are slowly approaching the interesting part of the story. But one after anonther: While waiting for the arrival of the other vehicles, the relays are brought to their final orbit. PE at 1.000km, AP at 2.000.000km. For an orbit they need 1 year and 155 days. The Catulluslander is the first vehicle after the mothership arriving in the Gauss Sphere of Influence. The trajectory fits quite well, I burn a small correction maneuver for 2.4 m/s to lower the PE at Catullus to 280km. For this maneuver I turned off 8 of the 10 LVN and the last two throttled to 10%. This way you can maneuver very precisely. Then I planned a maneuver in the orbit of Catullus to slow down and adapt the orbit to the mothership. The brake maneuver needs 1.441m/s. After this maneuver, I changed the inclination by 0.9 degrees and accelerated at the AP for 84 m/s to reach an intercept with the mothership. With the claw monuted on the mothership I have then catches the Catulluslander. Now the Catulluslander can be manned and everything is prepared. But I can not land yet, because the other vehicles have already arrived and first have to be brought to their Orbits. (Thre are 2 solar eclipses simultaneously on Gauss) The Survey probe is next. In the transfer stage are still 294 m/s left. This I use to slow down at Gauss and get an orbit with an AP of 108.000km. Then I dropped the burned out stage. From now I have still ion drive available. At the AP, I then planned a maneuver for 405.9 m/s to reach a polar orbit at Catullus. There I then lowered the AP to 1.500km to make an Orbital Survey. (Again 2 solar eclipses on Gauss, which does not seem as rare as I thought) Meanwhile the Tarsiss SSTO has already arrived. It has braked at the PE of Gauss for 326.4 m/s and had then also at Catulluss a PE of 280 km. At Catullus, the inclination was adjusted (36 m/s) and braked for another 560 m/s to reach a stable orbit. The Tarsiss SSTO remains here in a parking orbit until I was on Catullus. All vehicles have now arrived and in a stable orbit. When I wanted to finish the game, I once again checked if interesting offers are available. God has that guy luck. Of course, I take him with me. Greetings
  13. Now I have really arrived at Gauss. Here are some impressions. From my mission report: A Journey to Gauss Greetings
  14. Thank god everything works again. So: Red Shirt makes everything broken. First Bill ... now the probe ...And now also the whole program - He does not do half things
  15. My Mothership with the fat-headed little green people arrived at Gauss. I have the two relays exposed .... ... and heading for Catullus. Aerobraking at Catullus is not so highly recommended, with a lot of patience but it works. Now I just have to wait for the Lander, he's still on the way. More pictures and details can be found here: A Journey to Gauss Greetings