Version: 0.23.5 – 0.24(ish) The Kerbonaut’s Guide to the Galaxy. st 1 Edition Lovingly Dedicated to: Jebediah Kerman Bob Kerman Bill Kerman The Team at Squad. "We who are about to die, salute you." Before you start: It is recommended that you laminate this guide. When you see a “” You should leave a tick/cross in DRY WIPE marker according to your current situation. Failure is always an option. Good luck and have fun exploring the Kerbolar System Apoapsis (Ap) – The highest point in your orbit.In astrodynamics a Δv or delta-v (literally “change in velocity”) is a measure of the amount of the effort that is needed to change from one trajectory to another by making an orbital manoeuvre. LKO = “Low Kerbin Orbit. If a craft needs to get into a stable orbit or land safely .” Escape Velocity – The velocity required to exit a planet’s sphere of influence. Navball – Used to get your bearings and to navigate when in space. Periapsis (Pe) – The lowest point in your orbit.KSP Basics: Delta-V . Thrust-To-Weight-Ratio – TWR for short is a ratio that defines the power of a craft's engines in relation to its own weight. Prograde/Retrograde – Prograde is “forward relative to the direction of movement” it will increase your orbital velocity. For example.Retrograde is “backwards relative to the direction of movement” it will decrease your orbital velocity. L”X”O – Low “Enter Planet Name Here” Orbit. Clicking this area will toggle the point of reference between Surface and Orbit.on the current celestial body without using parachutes. Manoeuvre Nodes . On the navball the normal and anti- . Usually the value is given in degrees where the value is given between –90° and 270°. Inclination . In the terms of a ratio. a craft with a greater thrust than weight will have a TWR greater than 1. After adding a node it shows the velocity change needed to reach the next new orbit next to the navball. as indicated by the green text. raising the altitude of the orbit on the other side. the point of reference determines the object from which all distance measurements and velocity vectors are made. Changing the point of reference changes the location of the prograde and retrograde markers. then its engines must put out more thrust than its current weight to counteract gravity. Multiple maneuver nodes can be added which will affect the following maneuver nodes. Burning normal or anti-normal will change the orbital inclination. Normal/Anti-Normal .The normal vectors are orthogonal to the orbital plane. Target. Manoeuvre Node Directions – Prograde/Retrograde . while burning retrograde will decrease velocity and reduce the orbit altitude on the other side. Burning prograde will increase velocity. An inclination of 0° or 180° is equatorial. so the craft is always above the equator.The tilt of the orbit is given by the inclination. Navball Point of Reference .A maneuver node is a planned velocity change along an orbit.These vectors directly change the speed of the craft. there is a third option. If a target is selected.As all movement in space is relative. Radial in/Radial out . Performing a radial burn will rotate the orbit around the craft like spinning a hula hoop with a stick.The radial-in vector points directly toward the center of the orbited body (center of the brown hemisphere on the navball). while the radial-out vector points directly away from it (center of the blue hemisphere).it is much more effective to use prograde and retrograde burns.normal vectors are located on the equator line directly between the prograde and retrograde markers. Navball Icons Centre of: . Radial burns are the least efficient way of adjusting one's path . abbreviated CoM. it shows the axis and direction of lift provided by wings. The centre of lift should also always be behind the centre of mass. is the location of an object where all mass is equally distributed around it. point away from or go through the centre of mass. Planes should have a centre of mass slightly in front of the centre of lift. The thrustvector and centre of mass should be in one line to minimize steering.” – Kerbal Space Program Wiki Centre of Mass (Yellow) Centre of Thrust (Pink) Thrust – “The centre of thrust or thrustvector is the direction in which the thrust is acting and on which point the thrust acts on the craft. Inside the editor it is showed as a cyan-coloured sphere (axis) along with an arrow (direction of the lift). control surfaces and winglets.” – Kerbal Space Program Wiki Lift – “The centre of lift is used mainly when creating planes. It is important to balance a craft to prevent it from getting out of control.Mass – “The centre of mass. For all craft the thrustvector should point to. or centre of gravity.”– Kerbal Space Program Wiki . 75km Pe for Aerobrake(Suggested): ≈36. it has just the right conditions to support a vast.Kerbin “A unique world. soaring mountains and wide. blue oceans.431m/s ΔV To LO from Sea Lvl: ≈4500 m/s Synchronous Orbit: 2868.077m Surface Gravity: 9. Home to the Kerbals. seemingly undepletable population of the eager green creatures.3km Atmosphere Present: Yes Oxygen Present: Yes Atmospheric Height: 69.4 Atmospheric: 0. Kerbin has flat plains.” –Kerbal Astronomical Society” Planetary Characteristics: Sphere Of Influence: 84.7 Space: 1 ΔV Stats (LKO): Body: Mun Minmus Eve Duna Moho Jool Eeloo KEO Delta-V: ~860m/s ~930m/s ~1033m/s ~1060m/s ~1676m/s ~1915m/s ~2100m/s ~1120m/s .159.81m/s (1G) Escape Velocity: 3.000m Science Multiplier: Surface: 0. 166G) Escape Velocity: 807.Mun “The Muns discovery is widely regarded as one of the more important breakthroughs of Kerbal evolution.” –Kerbal Astronomical Society Characteristics: Sphere Of Influence: 2429.08m/s ΔV To Low Orbit: ≈800m/s Synchronous Orbit: N/A (SoI too low) Pe for Aerobrake(Suggested): N/A Science Multiplier: Surface: 4 Atmospheric: N/A Space: 3 Mun Biomes: Biome: Midlands Midlands Craters Highlands Highland Craters Canyons Northern Basin East Crater Northwest Crater Southwest Crater Farside Crater East Farside Craters Polar Crater Poles Polar Lowlands . Granted it didn’t happen all that long ago.63m/s (0.6km Atmosphere Present: No Oxygen Present: No Atmospheric Height: N/A Surface Gravity: 1. but it’s still fair to say that Kerbals are wiser and more evolved now than they were back then. . ”-Kerbal Astronomical Society Planetary Characteristics: Minmus Biomes: Sphere Of Influence: Atmosphere Present: Oxygen Present: Atmospheric Height: Surface Gravity: Escape Velocity: ΔV To Transfer: ΔV To LO from Sea Lvl: Synchronous Orbit: Pe for Aerobrake(Suggested): Science Multiplier: Surface: 5 Atmospheric: N/A Space: 4 2.Minmus “Minmus is the smallest moon orbiting Kerbin.4km No No N/A 0.247.94km N/A Biomes: Highlands Midlands Lowlands Slopes Lesser Flats Flats Great Flats Greater Flats Poles .05G) 242. From the surface of Kerbin.491m/s (0.61m/s 920m/s N/A 357. it can be seen on clear days as a tiny blue speck in the sky. . 708m Surface Gravity: 16. most visible objects.47km Pe for Aerobrake(Suggested): ≈72.Eve “Eve is certainly the purplest object in the solar system.109.4km Atmosphere Present: Yes Oxygen Present: No Atmospheric Height: 96.500 m/s Synchronous Orbit: 10.7m/s (1. very purple tint.96m/s ΔV To LO From Sea Lvl: ≈11. mainly because of its very.”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 85.500m Science Multiplier: ~80m/s Surface: 12 Atmospheric: 7 Space: 7 ΔV Stats*: Body: Kerbin Moho Duna Dres Jool Eeloo Gilly LEO Kerbol Orbit Delta-V: ~1030m/s ~810m/s ~190m/s ~430m/s ~1045m/s ~1230m/s ~1650m/s ~12000m/s *(From Orbit Around Eve + Does not include getting into orbit or landing) .328.7G) Escape Velocity: 4831. Its one of the larger. 00km Pe for Aerobrake(Suggested): ≈13.94m/s (0. Duna has long been a wonder to Kerbalkind.3G) Escape Velocity: 1372.Duna “Also known as the red dot that you can see if you squint at it really hard.9km Atmosphere Present: Yes Oxygen Present: No Atmospheric Height: 41.921.”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 47.000m Science Multiplier: ~110m/s Surface: 8 Atmospheric: N/A Space: 7 ΔV Stats *: Body: Ike Eve Dres Kerbin Moho Jool Eeloo LDO Kerbol Orbit Delta-V: ~270m/s ~190m/s ~460m/s ~1060m/s ~840m/s ~1075m/s ~1260m/s ~1380m/s *(From Orbit Around Duna + Does not include getting into orbit or landing) .446m Surface Gravity: 2.41m/s ΔV To LO from Sea Lvl: ≈1750 m/s Synchronous Orbit: 2880. It was the first planet considered to be a dwarf.Dres “Dres is a very small planet.”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 32.00m/s ΔV To LO from Sea Lvl: ≈555 m/s Synchronous Orbit: 732.24km Pe for Aerobrake(Suggested): N/A ~350m/s Science Multiplier: Surface: 8 Atmospheric: N/A Space: 7 ΔV Stats *: Body: Eve Duna Jool Kerbin Moho Eeloo LDO Kerbol Orbit Delta-V: ~430m/s ~460m/s ~1315m/s ~1300m/s ~1080m/s ~1500m/s ~800m/s** *(From Orbit Around Dres + Does not include getting into orbit or landing) **(Delta-V needed to get into orbit after ascent) . Its orbit is highly irregular and together with its size it took a long time to discover since half the time it was not where scientists expected to find a planet.115G) Escape Velocity: 558.8km Atmosphere Present: No Oxygen Present: No Atmospheric Height: N/A Surface Gravity: 1.13m/s (0.832. Moho “Moho figures in Kerbal mythology as a fiery place with oceans of flowing lava.”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 9. its much less interesting.275G) Escape Velocity: 1.41m/s ΔV To LO from Sea Lvl: ≈1.161. In reality however.646.7km Atmosphere Present: No Oxygen Present: No Atmospheric Height: N/A Surface Gravity: 2.400 m/s Synchronous Orbit: N/A (SoI too Low) ~2200m/s** Pe for Aerobrake(Suggested): N/A Science Multiplier: Surface: 9 Atmospheric: N/A Space: 8 ΔV Stats *: Body: Eve Duna Jool Kerbin Dres Eeloo LMO Kerbol Orbit Delta-V: ~810m/s ~840m/s ~1695m/s ~1680m/s ~1080m/s ~1500m/s ~730m/s *(From Orbit Around Moho + Does not include getting into orbit or landing) **(Delta-V needed to get into orbit after ascent) .70m/s (0. 4559852×109 m Atmosphere Present: Yes Oxygen Present: No Atmospheric Height: 138.155km Surface Gravity: 7.8G) Escape Velocity: 9. Philosophers reason that the swirling green planet must be a really nice place to visit.Jool “Jool is particularly known for being a rather large. Kerbalkind has longed to visit it since it was first spotted in the sky.”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 2.010.46km ~2630m/s** Pe for Aerobrake(Suggested): N/A Science Multiplier: Surface: N/A Atmospheric: 7 Space: 7 ΔV Stats *: Body: Eve Duna Moho Kerbin Dres Eeloo LJO Kerbol Orbit Delta-V: ~1045m/s ~1075m/s ~1695m/s ~1915m/s ~1315m/s ~2115m/s ~965m/s *(From Orbit Around Jool + Does not include getting into orbit or landing) **(Delta-V needed to get into orbit after ascent) .85m/s (0.000 m/s Synchronous Orbit: 15. on account of its wholesome coloration. predominantly green planet.43m/s ΔV To LO from Sea Lvl: ≈22.704. . The debate is still ongoing.94km Atmosphere Present: No Oxygen Present: No Atmospheric Height: N/A Surface Gravity: 1.082. on good days. as most academic summits held to address the issue have devolved into.Eeloo “There’s been a considerable amount of controversy status of Eeloo as being a proper planet or just a lump of ice going around the sun. petty name calling. and on worse ones.69km ~2100m/s** Pe for Aerobrake(Suggested): N/A Science Multiplier: Surface: 9 Atmospheric: N/A Space: 8 ΔV Stats *: Body: Eve Duna Moho Kerbin Dres Jool LEO Kerbol Orbit Delta-V: ~1230m/s ~1260m/s ~1880m/s ~2100m/s ~1500m/s ~2115m/s ~1150m/s *(From Orbit Around Eeloo + Does not include getting into orbit or landing) **(Delta-V needed to get into orbit after ascent) .”–Kerbal Astronomical Society Planetary Characteristics: Sphere Of Influence: 119.83m/s ΔV To LO from Sea Lvl: ≈840m/s Synchronous Orbit: 683.172G) Escape Velocity: 841. all-out brawls.79m/s (0. Time Warp Altitudes Delta-V Map . . Airplane Construction (By Keptin) . . . . VAB Checklist* Booster: Fuel Engines SRB’S Decouplers Struts! Control Surfaces Correct Staging Action Groups LES (Launch Escape System) Orbital Stage: RCS Monopropellant Fuel Engine (LV-909/Poodle) Batteries Solar Panels/Reactor Docking Port Lander/Descent Stage: Landing Legs Ladder Lights Parachutes Command Module S.S/Reaction Wheels More RCS and Monopropellant Fuel Engine (LV-909/Poodle) .A. Batteries Solar Panels Crew (Jeb. Rocket Construction Tools Presuming that you’ve already built your first rocket (If not. whack a RT-10 Solid Fuel Booster onto a Command Pod Mk1 and launch!) These are tools designed to help make more efficient rockets: . Bill. Bob) Science (Goo. Materials) Clear Hatch Snacks! *Some parts may not be available if you play in Career mode. . I’m working on making my own. pick a dV on the left and Isp on the right. The required mass fraction of your vehicle/stage is where your line crosses the Mass Fraction scale.23. .Apologies for not having 0. there are no graphs available on the internet including these.5 rockets. To use this nomogram. Draw a straight line between them. choose your desired payload weight on the left and your mass fraction .Do the same as before. This is the amount of fuel you will need to lift the payload.which you obtained beforehand and draw a straight line between them. . the dry fuel tanks and fuel. You Done Goofed! Check That: Hatch isn’t obstructed! Landing leg orientation is correct! You have enough electricity! You have strutted EVERYTHING! You have sufficient fuel supplies! You have crew! Action groups are set up! You have science modules! Parachutes for landings! . Mission Planner: Mission Name: Budget: / Contracts: Science Goal: + Mission Briefing: Chosen Crew Member(s): Launch Vehicle: Orbital Vehicle: Lander: . 5-10km. Habitats etc. S. Launch: Increase Throttle Activate First Stage Ascent Stage: Jettison SRB’s At 7. Water etc.S Staging Crew Damage Check 5P’s: Pods: Command Modules. (If using TAC) Food. Propulsion: Fuel and Engines Power: Panels. Reactors Piloting: RCS. Complete Gravity Turn Continue To Burn Until Desired Apoapsis is Reached Orbital Stage: Burn Pro-Grade until the Periapsis is within 0-3km of the Apoapsis Height Deploy Solar Panels Do Science .S etc.A. Batteries. People: Crew.A.Launch Date: Flight Checklist: Pre-Launch: S. Pre-Landing (When Returning or Landing Anywhere): Retract Solar Panels and Antenna Deploy Legs Arm Parachutes Crew Check Select Landing Area Post Landing: Do Science! Stretch Legs! Recover Vehicle (If landed on Kerbin)! Flight Observations/Notes: . Perform Transfer Stage OR Burn RetroGrade to return to Kerbin. Orbit Guide . orient your ship to the 0-degree latitude mark (Directly East) between the blue and brown halves of the navball. but you may overshoot when at full throttle. begin your orbital burn by using the Shift key to throttle up.1) Build a rocket. 10) Wait until a periapsis appears directly opposite to your apoapsis and wait until it’s altitude becomes >70km. 4) Press Space to launch and wait until you are at 10. 8) As you approach apoapsis. It should have enough Delta-V to get into LKO. 9) Once you are 10-30 seconds away from apoapsis. You can go at full throttle or partial throttle. ensure that you head directly up (Keep your dot on the blue top dot on the Navball) 5) Jettison your first stage with the spacebar 6) Throttle down to 2/3rd power 7) Turn 45 degrees East (Press D) and burn until your apoapsis is at 70-75km. A minimalistic rocket would be: Command Pod Mk1 FL-T400 Fuel Tank LV-909 Liquid Fuel Engine TR-18A Stack Decoupler FL-T800 Fuel Tank LV-T30 Liquid Fuel Engine 2) Turn SAS on and throttle up 3) Countdown from 10. you have made orbit! Docking Tutorial 1. Courtesy of Leforian Time your launch by putting the target slightly behind KSC in its orbit like this. You can check this by pressing M. . 11) Congratulations. Hit X to turn off your engines instantly.000m. 2. As you are burning start your gravity turn at the normal altitude. 3. . In orbital view try to get your apoapsis to meet the target's orbit ahead of the target. You can make it encounter sooner by burning more vertically. The tricky part is determining where to put the apoapsis. 5. The top red carrot is where I will be. I need to push my apoapsis farther away. and the bottom carrot is where my target will be. I misjudged the timing and my apoapsis crossed the orbit too late. so you will also have to burn slightly down in pitch to keep your apoapsis at the altitude you need. Remember that burning directly prograde will raise your apoapsis further.4. and encounter later by burning more horizontally. . Formula Sheet .6. After moving my apoapsis forward for a minute or two I get a good 100 meter-ish encounter. then the Isp is equal to a single engine.“For when you feel like Wernher Von Kerman” Thrust to Weight Ratio – Ft .the starting mass in the same unit as Mend Mend Mstart - the end mass in the same unit as Isp – the specific impulse on the engine in seconds.Engine Thrust M – Total mass of the craft g – The local gravitational acceleration Combined Specific Impulse – If the Isp is the same for all engines in a stage. then use the equation above. . Tsiolkovsky rocket equation – Basic Δv Calculation – Δv . If the Isp is different for engines in a single stage.the velocity change possible in m/s Mstart . Fuel flow rate – Orbital velocity – µ .Gravitational Parameter of parent body (km3/s2) r – Radius of orbit (km) Notes Page . . unless it is cleaned via the Mobile Processing Lab MPL-LG-2. The unit cannot be reused after its results were transmitted. is the more advanced scientific sensor. The unit cannot be reused after its results were transmitted.Science Modules: Mystery Goo™ Containment Unit: “The Mystery Goo™ Containment Unit is a science part used to expose a goo to atmospheres and vacuum in attempts to gain science from observing the goo inside.” – Kerbal Space Program Wiki . the science gained from observing the Mystery Goo varies depending on different conditions in flight.” – Kerbal Space Program Wiki SC-9001 Science Jr. unless it is cleaned by theMobile Processing Lab MPL-LG-2. Like EVA reports. “Science Jr. It is used to retrieve science points and to complete science experiments in space or other celestial body. This can be achieved either via action group or right clicking the container and clicking observe mystery goo. There is no unit shown but it is assumed to be degrees Celsius. The 2HOT cannot be used to earnscience while distant from a celestial body.0001 is shown as vacuum by the sensor. This can be used with altitude to estimate the mass of the nearest celestial body or to measure its surface gravity. Alternatively. Lower atmospheric pressures markedly reduce lift and drag induced by the atmosphere.” – Kerbal Space Program Wiki GRAVMAX Negative Gravioli Detector: “This instrument shows the gravity in your current sphere of influence to a maximum of 4 significant figures and two decimal places.PresMat Barometer: “Displays atmospheric pressure to five significant figures. while active. A pressure below 0. and cause a small change in engine efficiency.” – Kerbal Space Program Wiki 2HOT Thermometer: “The 2HOT Thermometer displays temperature to 5 significant figures when activated and right-clicked. it can be used with the accelerometer and altitude to make landing estimates. although it will continue to tell the temperature.” – Kerbal Space Program Wiki Mobile Processing Lab MPL-LG-2: . Using the module consumes electricity” – Kerbal Space Program Wiki Easy Science At Kerbin: Gather a: Crew Report! EVA Report! Surface Sample! Mystery Goo! Materials Bay! Kerbin Biomes: Launchpad Runway KSC Mountain Shores Tundra Water Grasslands Desert Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over Flying Over .“The Mobile Processing Lab MPL-LG-2 allows scientific data to be transmitted with higher efficiency and to reuse the Mystery Goo™ Containment Unit andSC-9001 Science Jr. The module needs its full capacity of two Kerbals to work. after transmitting their result. Note that it is not a command module. any craft it's a part of will need a probe body or command pod to be piloted. Badlands Highlands Ice Caps Interplanetary Travel Orbital Transfer Guide 10 Year Launch Window Calendar (Earth Years) Gravity Assists KSC . Mun and Minmus Landing and Parachutes Interplanetary Travel Orbital Transfer Guide 100 Year Launch Window Calendar (Kerbin Years) Landing Guides Transfer Windows . Delta-V Requirements Travelling To Duna. Gravity Assists Delta-V Requirements Ideal Interplanetary Phase Angles Orbital Transfer Guide In map view. The point where the green line intersects your desired planet's orbit is where you want it to be when you start your transfer burn. put the blue cross on the planet you’re orbiting and the red cross on your rocket. . Hohmann & Bi-Elliptical Transfers Hohmann Transfer: A Hohmann transfer is a technique that involves burning your engine twice whilst in orbit in order to reach a higher orbit. You start off by burning prograde at your periapsis until you reach the desired altitude for your apoapsis. You will now have an elliptical orbit. Next you have to travel up to your apoapsis and burn prograde once again in order to raise your periapsis to the same altitude as your apoapsis. Like so: Bi-Elliptical Transfer: A Bi-Elliptical transfer is similar to a Hohmann transfer although it requires one extra step. Most of the time the Hohmann technique is more useful but in some cases using a Bi-Elliptical transfer can save you Delta-V! You start a Bi-Elliptical transfer by burning prograde from your periapsis in order to raise your apoapsis. Again, making an ellipse. Once you are at apoapsis, you burn prograde to raise your periapsis to your desired orbital altitude. After travelling to periapsis, you want to burn retrograde and bring your apoapsis down to roughly the same altitude as your periapsi. Like so: Landing Guides You’ve come this far; let’s not screw it up now! Check your parachutes: Atmospheric Targeting Graph/Guide: Aerocapture Graphs: . Kerbin SOI Entry Aerocapture Chart 55000 50000 Minmus 45000 Mun Sync Orbit 40000 Aerocapture Periapsis (m) SSync Orbit 35000 1000 km 100 km 30000 25000 Orbital Velocity (m/s) Eve SOI Entry Aerocapture Chart 75000 73000 71000 69000 Aerocapture Periapsis (m) 67000 Sync Orbit 65000 SSync Orbit 1000 km 63000 100 km 61000 59000 57000 55000 Orbital Velocity (m/s) . Duna SOI Entry Aerocapture Chart 18000 17000 16000 15000 Ike 14000 Sync Orbit 13000 Aerocapture Periapsis (m) SSync Orbit 12000 100km 11000 50km 10000 9000 8000 Orbital Velocity (m/s) Jool SOI Entry Aerocapture Chart 135000 130000 Pol 125000 Bop Tylo 120000 Aerocapture Periapsis (m) Vall Laythe 115000 Sync Orbit SSync Orbit 110000 1000 km 150 km 105000 100000 Orbital Velocity (m/s) . Laythe SOI Entry Aerocapture 34000 32000 30000 28000 Aerocapture Periapsis (m) 26000 24000 22000 20000 250 500 750 1000 1250 1500 1750 Orbital Velocity (m/s) 200 . Transfer Windows Years 1 -25 . Years 26 -50 . Years 51 – 75 . Years 76 -100 . Gravity assists are useful because they allow you to gain or lose orbital energy or make expensive maneuvers such as plane changes for free. you have to put yourself into a transfer orbit. Firstly. . Time Accelerate until you leave the SoI of the celestial body. It is one of the most efficient ways of interplanetary travel but is also one of the hardest manoeuvres. 3. You can use gravity assists to go from Kerbin to Duna. 4. they are difficult to set up and require careful planning and lots of patience. it is most effective when you are closer to the body. until you have reached a the SoI of another planet or anywhere really. 5. but ensure you won’t collide with anything and that you won’t be accidentally aerobraking. however. When you check the map you will notice that your Apoapsis height has increased. Time Accelerate until you reach the SoI of the celestial body. 6. ensuring that the celestial body is travelling in the direction you want to go in. but occasionally a planet: for instance. once you master them. changing your course when furthest away from the body you are getting a gravity assist from. 7. 2. ” –Stochasty 1. Plan another course correction manoeuvre at Periapsis to increase your Apoapsis height after leaving the SoI. That said. you can manage feats you wouldn't have thought possible. when navigating the Joolian moon system).Gravity Assists: “A gravity assist is a maneuver in which you use a flyby of a secondary celestial body (such as a planet or moon) to alter your orbit about the primary (typically the sun. You can repeat this. or Jool to Kerbin without using a lot of fuel. 8. Delta-V Requirements: (To Low Orbit) Mün: ~5620m/s Minmus: ~5550m/s Moho: ~8430m/s Eve: ~6890m/s (And Gilly: ~8750m/s) Duna: ~5980m/s (And Ike: ~6360m/s) Dres: ~6650m/s Jool: ~9095m/s . This still applies to your periapsis during a gravity assist. You can perform a powered gravity assist. When you accelerate during your fly-by. Accelerating at your periapsis has the greatest effect on your apoapsis. fuel is used very efficiently to increase the apoapsis of your final trajectory. This is a very difficult technique because it is hard to control your final trajectory even when using a manoeuvre node but can save a lot of time and a lot of fuel. Pol (From LJO): ~3400m/s Bop (From LJO): ~3380m/s Tylo (From LJO): ~3130m/s Vall (From LJO): ~2760m/s Laythe (From LJO): ~2380m/s Eeloo: ~8750m/s .
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