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About OhioBob

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    Junior Rocket Scientist

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  • Website URL http://www.braeunig.us/space/

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  1. OhioBob

    is use AtmCurve broken??

    I guess I don't understand what you want. You want the Isp to be 3000s at sea level and 1000s in a vacuum, correct? What do you want the thrust to be? Do you want it 1000 kN at both sea level and vacuum? If so, that doesn't make any sense. Thrust is equal to the Isp times the mass flow rate. So as long as the fuel flows at a constant rate, the thrust is going to be proportional to the Isp. The only way to keep the thrust constant while the Isp changes is the alter to fuel flow rate. You have a throttle for that. It sounds to me like the game is doing what it is suppose to do.
  2. OhioBob

    is use AtmCurve broken??

    OK, well then just flip the numbers in atmosphereCurve. And if you want the thrust at sea level to be 1000 kN, the set maxThrust = 333.333.
  3. OhioBob

    is use AtmCurve broken??

    @aaronsta1, atmosphereCurve is the Isp (seconds) vs. pressure (atmospheres). So if you want the Isp to be 1000 at sea level and 3000 in a vacuum, you need something like this: atmosphereCurve { key = 0 3000 key = 1 1000 key = 1.5 0.001 } That will make the Isp 1000s at 1 atm pressure, and 3000s at 0 atm pressure. maxThrust is the thrust in a vacuum (kN). So if you set maxThrust = 1000, then with the curve above, you should get 1000 kN thrust in a vacuum and 333 kN at sea level.
  4. No gravity assist, but I did use a bi-elliptical transfer. I put it into a polar orbit so I was able to get science from all of Grannus' biomes.
  5. Flyby of Grannus. Closest approach 38,601 km.
  6. OhioBob

    Closest you have gotten to the Sun

    I've never flow by the sun, but I just completed a flyby of Grannus (GPP & GEP). Got to 38,601 km at closest approach. Heating-wise, that should be the equivalent of about 120,000 km from Kerbol.
  7. I'm not sure the Wiki is complete and up to date. Haven't looked at it in a long time. The GPP download includes a file named CelestialBodies.pdf that also has all has all the facts and figures. GPP is finished, there will be no new planets. You're free to go poking around in the planet configs and make whatever changes you want. If you want to change gravity, change geeASL. If you mess something up, however, don't ask for support. Changing the configs voids the warranty.
  8. Here's a couple more screenshots... Just completed a flyby of Taranis. Not much time to enjoy the view, however. We zipped past at a whopping 17.4 km/s. A successful orbital science mission to Epona. By the way, I've discovered a bug in Airmed's biome map. I plan to release a minor update, but I'd like to give it a little more time to see if any other problems turn up. If nothing else is reported or discovered, I'll probably update in a week or so.
  9. Sorry about that. Lili's gravity is now where I originally intended it to be. I goofed by computing its mass based on a radius of 7000 meters as specified in its config. But that's the radius to the lowest point on its surface. Because of Lili's huge deformity, its actual volumetric radius is much larger. Therefore its mass and surface gravity should have been much greater than I originally computed. I made the same mistake with RAB-58E in GEP, which I've also fixed. Even with the fix, there are some places on Lili's big equatorial ridge that probably still can't be landed on. I haven't actually tried it, but the math say no.
  10. It's possible to hide the parts from appearing in the menu and tech tree, but still have them exist so as to not break existing craft. That might be an option. @PART[name]:AFTER[MissingHistory] { @TechRequired = Unresearchable @category = none @subcategory = 0 }
  11. That is the best way to do it, but it can still take a lot of delta-v depending on how high the initial orbit is. Starting out in low Kerbin orbit, and boosting the apoapsis all the way out the sphere of influence, will cost over 1900 m/s to complete all the maneuvers. Of course it will cost nearly 4600 m/s to reverse the orbit without raising the AP, so it's a big savings. The higher the initial orbit, the less delta-v it takes for both methods. It's always better to raise the AP, but the savings we get by doing so diminishes. For instance, suppose the initial orbit is 3000 km. Doing a simple orbit reversal right from there takes 1980 m/s, and by raising the AP we can reduce it to 880 m/s.
  12. You should have no problem with 1.4.3. Except for a couple minor last minute things, all of the changes were made and tested in 1.4.3. So it was really the other way around; we had to test it and make sure it was safe in 1.4.5 before we released it.
  13. Ask and you shall receive.
  14. An ascending node between 0-90o is prograde, and between 90-180o is retrograde. Looking down on the orbit, prograde is counterclockwise motion, and retrograde is clockwise motion. The orbit animation in the tracking station or map view also show the direction of movement.
  15. Kopernius 1.4.5-2 released earlier today and everything looks good. I transferred my GEP_Primary save from 1.4.3 to 1.4.5 without any issues.