_username

In fact,the BEST "Earth => Venus => Earth" trajectory can give the spacecraft the speed that can escape the Sun with ONLY 3.8km/s delta-v. But the problem is that it is so difficult to get the transfer window!

Thank you for your help. I tried to change the plane at first. Then I found another problem. Let's see the information first [Kerbin-Eve-Kerbin-Jool]: Burn Information to Depart Kerbin --------------------------------------------- Total Delta-V = 3.645 km/s Prograde Delta-V = 3639.326 m/s Orbit Normal Delta-V = -206.638 m/s Radial Delta-V = 0.000 m/s --------------------- Burn True Anomaly = 294.594 deg --------------------------------------------- Burn Information to Depart Eve --------------------------------------------- Total Delta-V = 0.000 km/s Prograde Delta-V = -0.041 m/s Orbit Normal Delta-V = -0.000 m/s Radial Delta-V = 0.000 m/s --------------------- Burn True Anomaly = 0.000 deg --------------------------------------------- Burn Information to Depart Kerbin --------------------------------------------- Total Delta-V = 2.138 km/s Prograde Delta-V = 2137.568 m/s Orbit Normal Delta-V = 0.000 m/s Radial Delta-V = -0.000 m/s --------------------- Burn True Anomaly = 0.000 deg --------------------------------------------- It looks more correct than before. The "Depart Kerbin" delta-v is right. However,it needs 5.8km/s delta-v in total,going to Jupiter directly without flyby just needs 6.3km/s delta-v! I've heard that earth-venus-earth-jupiter[-seturn] trajectory only needs 3.5km/s delta-v! What's wrong with the trajectory which I planned?

Thanks! Today I tried this tool carefully,it can save 1000~3000 m/s to Mercury , 1000~2000 m/s to Jupiter and 500~1500 m/s to Saturn. But when I want to try it in KSP,I have some trouble. This tool only gives me "Delta-V" "C3 Energy" and "DLA",but I don't know how to get the "Prograde Normal Radius" delta-v information. What's the way to get the information?

Thank you for your help.I tried it just now,it is a really good tool! However,it limits the Launch Year. "Query error. Launch year must be between 2010 and 2040." It may take more than 10 years to arrive Saturn,so 30 years may not be very enough. (And the Year1 in RSS is 1951 instead of 2000.)

I have been trying to solve the question for two weeks,but it seems I have not found a good solution. A mod named Transfer Window Planner IS REALLY FIT for RSS,but it doesn't support flyby orbits. (http://forum.kerbalspaceprogram.com/threads/93115) An application named KSP Trajectory Optimization Tool is a very great tool for squad,but when I tried it with RSS,it couldn't find a good flyby orbit. (Often need 20km/s delta-v,it is too large to be a good flyby orbit.) (http://forum.kerbalspaceprogram.com/threads/36476) I have searched google,but I didn't find any better tools or ways. Thank you and sorry for my bad English.

I got it by "Create New Bodies File From KSP".Here is the file. [Sun] epoch = 0.000000 sma = 0.000000 ecc = 0.000000 inc = 0.000000 raan = 0.000000 arg = 0.000000 mean = 0.000000 gm = 132752533999.999980 radius = 696342.000000 atmoHgt = 700000.000000 rotperiod = 432000.000000 rotini = 0.000000 bodycolor = gray canBeCentral = 1 canBeArriveDepart = 0 parent = parentID = -1 name = Sun id = 0 [Kerbin] epoch = -31542641.784000 sma = 149494366.257098 ecc = 0.016096 inc = 23.446038 raan = 359.996500 arg = 102.972068 mean = 357.060746 gm = 398600.441800 radius = 6371.000000 atmoHgt = 130.000000 rotperiod = 86164.098904 rotini = 100.183300 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Kerbin id = 1 [Mun] epoch = -31542641.784000 sma = 384308.437771 ecc = 0.053281 inc = 28.362678 raan = 2.296616 arg = 199.764093 mean = 222.701235 gm = 4902.800000 radius = 1737.100000 atmoHgt = 0.000000 rotperiod = 2356547.694659 rotini = 25.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 0 parent = Kerbin parentID = 1 name = Mun id = 2 [Minmus] epoch = -31542641.784000 sma = 2866832853.163975 ecc = 0.046207 inc = 23.672570 raan = 1.846090 arg = 169.687679 mean = 286.826736 gm = 5793939.130000 radius = 25559.000000 atmoHgt = 390.000000 rotperiod = 62063.712000 rotini = 230.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Minmus id = 3 [Moho] epoch = -31542641.784000 sma = 57908973.645888 ecc = 0.205619 inc = 28.602521 raan = 10.865412 arg = 66.903710 mean = 318.216208 gm = 22038.882800 radius = 2439.700000 atmoHgt = 14.000000 rotperiod = 5067031.680000 rotini = 190.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Moho id = 4 [Eve] epoch = -31542641.784000 sma = 108209548.790467 ecc = 0.006810 inc = 24.463976 raan = 7.981603 arg = 123.712129 mean = 311.245995 gm = 324863.624000 radius = 6051.800000 atmoHgt = 350.000000 rotperiod = 20996798.400000 rotini = 0.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Eve id = 5 [Duna] epoch = -31542641.784000 sma = 227949699.961976 ecc = 0.093261 inc = 24.692724 raan = 3.351911 arg = 332.102266 mean = 169.391313 gm = 42837.069000 radius = 3380.100000 atmoHgt = 170.000000 rotperiod = 88642.684800 rotini = 90.000000 bodycolor = gray canBeCentral = 1 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Duna id = 6 [Ike] epoch = -31542641.784000 sma = 1883812.366574 ecc = 0.007973 inc = 25.440800 raan = 358.502256 arg = 320.735968 mean = 15.816140 gm = 7180.810212 radius = 2409.300000 atmoHgt = 0.000000 rotperiod = 1443307.267789 rotini = 0.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Jool parentID = 8 name = Ike id = 7 [Jool] epoch = -31542641.784000 sma = 778188938.659755 ecc = 0.048727 inc = 23.253133 raan = 3.262077 arg = 10.756428 mean = 302.581240 gm = 126686534.000000 radius = 69911.000000 atmoHgt = 374.000000 rotperiod = 35730.000000 rotini = 0.000000 bodycolor = gray canBeCentral = 1 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Jool id = 8 [Laythe] epoch = -31542641.784000 sma = 1221966.238511 ecc = 0.028919 inc = 6.460493 raan = 126.494523 arg = 182.088677 mean = 75.161174 gm = 8977.864800 radius = 2566.000000 atmoHgt = 600.000000 rotperiod = 1377904.352657 rotini = 90.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 0 parent = Dres parentID = 15 name = Laythe id = 9 [Vall] epoch = -31542641.784000 sma = 5845670624.078222 ecc = 0.246277 inc = 23.612364 raan = 44.360998 arg = 184.494535 mean = 300.129730 gm = 870.957000 radius = 1143.000000 atmoHgt = 0.000000 rotperiod = 551856.672000 rotini = 0.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Vall id = 10 [Bop] epoch = -31542641.784000 sma = 9378.492209 ecc = 0.015399 inc = 36.324334 raan = 46.482126 arg = 357.775924 mean = 7.185121 gm = 0.000715 radius = 7.250000 atmoHgt = 0.000000 rotperiod = 27572.079609 rotini = 230.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Duna parentID = 6 name = Bop id = 11 [Tylo] epoch = -31542641.784000 sma = 1070823.468895 ecc = 0.001190 inc = 25.270714 raan = 358.012522 arg = 139.299257 mean = 232.675323 gm = 9890.200600 radius = 2624.100000 atmoHgt = 0.000000 rotperiod = 618549.572135 rotini = 0.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Jool parentID = 8 name = Tylo id = 12 [Gilly] epoch = -31542641.784000 sma = 23458.112018 ecc = 0.000329 inc = 38.277370 raan = 47.518936 arg = 263.896387 mean = 323.504034 gm = 0.000099 radius = 5.456000 atmoHgt = 0.000000 rotperiod = 109071.071004 rotini = 5.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Duna parentID = 6 name = Gilly id = 13 [Pol] epoch = -31542641.784000 sma = 422018.294524 ecc = 0.003546 inc = 25.464095 raan = 358.046643 arg = 231.270346 mean = 195.327409 gm = 5961.150060 radius = 1811.300000 atmoHgt = 0.000000 rotperiod = 153038.725670 rotini = 25.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Jool parentID = 8 name = Pol id = 14 [Dres] epoch = -31542641.784000 sma = 1424838758.613269 ecc = 0.053472 inc = 22.569923 raan = 5.970845 arg = 85.046612 mean = 67.468852 gm = 37931187.000000 radius = 60268.000000 atmoHgt = 830.000000 rotperiod = 38052.000000 rotini = 25.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Sun parentID = 0 name = Dres id = 15 [Eeloo] epoch = -31542641.784000 sma = 671253.637542 ecc = 0.009512 inc = 25.703643 raan = 358.936008 arg = 53.132107 mean = 276.265204 gm = 3203.386520 radius = 1550.800000 atmoHgt = 60.000000 rotperiod = 307000.532419 rotini = 25.000000 bodycolor = gray canBeCentral = 0 canBeArriveDepart = 1 parent = Jool parentID = 8 name = Eeloo id = 16 Thank you.

Today I tried to get the departure information with RSS again.Here are the pictures. I just use the "Kerbin Departure Information" instead of "Fyby Maneuver Sequencer". But the problems are the same as yesterday's. How should I deal with it?

I am using the tool with RSS(Real Solar System). It could work,but it couldn't work well. Let's see these pictures. I try to plan a flyby orbit like this. (Kerbin[Earch] => Eve[Venus] => Kerbin[Earch] => Saturn[Dres]) It seems no problems. But when I try it in Maneuver Sequencer,the results aren't correct. Burn Information to Depart Kerbin --------------------------------------------- Total Delta-V = 13.834 km/s Prograde Delta-V = -7771.358 m/s Orbit Normal Delta-V = 11444.292 m/s Radial Delta-V = -0.000 m/s --------------------- Burn True Anomaly = 255.975 deg I think it will only takes 3200~3700 m/s to depart Kerbin[Earch]. And the prograde delta-v is negative,the normal delta-v is too large,I don't think it is correct. Thank you for your help (and sorry for my bad English).