Saturday, December 02, 2006

Real men don't need instruction's

Just need to make an instruction manual now for Venera-d, Then its finally finished :). I flight tested, tweaked and made scenarios for Venera-D today, which took at lot longer than I had expected. Admittedly it is a difficult flight to complete, unless you cheat and use unlimited fuel, On the flight towards Venus, you really have to be careful on how much fuel you use, the fregat burn has to be almost perfect, if you use more than 10% of Venera-d's fuel for course corrections you won't be able to get into Venus orbit. and then there is the difficulty of trying to land and insert the orbiter into orbit. If you use the scenarios I made, they set you up for a polar landing close to the north pole, right on the edge of sunrise, and polar orbit for the orbiter.

I have a feeling I have screwed something up, venus express is in a 24hour orbit, the best I can get the Venera-D orbiter in is a 500km x 375millionkm orbit, they both have similar fuel ratio's and ISP, so I figure my launches are screwed up, because the Venus encounter is happening way to fast. I'm going to try running the mission with the Venus express mission event dates, and see if that solves things

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