martinborgen

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About martinborgen

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    Rocketry Enthusiast
  1. How good is the shielded dockingport? It looks quite blunt?
  2. I don't really buy that the mk1 nose cockpit is supposed to be for airplanes only - it has the docking window on the back!
  3. Woah, you launch a 90 ton plane to orbit with 3 engines? I would need at least six for that kind of weight!
  4. Hello all. Ive recently been refining my spaceplane building and flying (particularly cargo lifters), and come to a question regarding ascent profile. I normally keep a quite shallow ascent to keep the speed up for the rapiers to keep their 200+ Kn of thrust. When nearing the 10 Km mark, i try to gain as much speed as possible with a shallow climb. Now at what point do you switch the rapiers to close cycle mode? I've found that I can get up to 1520m/s depending on the heat tolerance of the parts used, but the last ~40m/s are gained very slowly. Am I better switching to close cycle at some point before this? And the main question: when switching to close cycle, do you pitch up, if so, how much? I've found that often I loose a lot of speed in the pitch manouvre, and I feel like I might just keep going straight (actually about 5-10 degrees of positive pitch)- the curvature of Kerbin and the speed you'redoing by now will guarantee you leave the atmosphere soon anyways.
  5. The winglets are disabled in all axis of control, ant not deployed. Here's the lander: http://imgur.com/79teBwD http://imgur.com/g8psFAs
  6. Clarification. It spins along it's own axis, it basically rolls. The correct end points towards the ground and space respectively.
  7. Most obvious on the inflatable one. That this is spawned from the Kraken itself! My eve lander have one below, and then three on strut segments on the top, to keep it pointing retrograde on the descent. But it starts spinning like mad, sometimes even breaking apart. And detatching the shields from any payload is a giant hazzle, they tend to hit parts of the rocket and break things. But the issue is also seen on another eve lander I made, avoiding the inflatable heatshield. How do you counter these spinning effects?
  8. Never had any wheel stress problems ever? What are you doing?
  9. I recently made my first eve ascent, and the lander was 24 tons, but that wouldn't lift off, so I burned some fuel, to 21 tons and made it - if I remove the empty tanks, it's at 19 tons - I'm suprised to see how close I was to the ones here!
  10. My long awaited Jool launch window appeared. Trans jool burns were completed, with 1 spaceplane for laythe 1 mining rig for either bop or pol 1 tanker for hauling the fuel 1 lander for vall? Tylo? Cant remmerber, the 0.8g one. 2x connected landers for the other hings, plus a small nuclear tug 1 orbital station plus big nuclear tug and return vehichle and one more thing, which I've forgotten what it was. Seven flights in total.
  11. Eve, though soon no more. Also dres, the mission design didnt work as I had planned.
  12. Ground effect though! I want! Ekranoplanes omnomnom!
  13. Could it be that under some circumstances the drag is reversed to provide acceleration instead? Some value goes negative or something, and suddenly the force from drag is applied in prograde direction instead?
  14. Ah, I didn't know that - cool. But an early shuttle design was planned to have jets too - should you want jets. =)
  15. Maybe I misunderstood, but the original buran did not have jets, no?