14:09 <queqiao-_> ⟨T​ori⟩ how do you make mechjeb "execute next principia manuever" work because it doesnt time warp and it doesnt execute it

14:19 <queqiao-_> ⟨T​ori⟩ how do you make mechjeb "execute next principia manuever" work because it doesnt execute it fully (edited)

15:29 <queqiao-_> ⟨S​tonesmile⟩ The main error will come from engines in RO not starting up instantly. MJ has no implementation of this, so the burn effectively gets cut short by about 1-2 sec

15:43 <queqiao-_> ⟨l​pg⟩ , 3, 4... depending on engine

15:52 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ How to get to earth-sun L1/L2?

15:53 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ with screenshots?

15:54 <queqiao-_> ⟨D​amien⟩ get into orbit, eject roughly towards the sun, do so with enough velocity to get the trajectory to just about reach L1/L2 at which point you'll see the trajectory get deflected. then just tidy it up

15:55 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ Is that amount at just above escape velocityq

15:55 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ Is that amount at just above escape velocity? (edited)

15:56 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ What speed is that at?

15:59 <queqiao-_> ⟨P​aculino (ŝi/ri/she/they)⟩ Relative to Earth, approximately zero

16:05 <queqiao-_> ⟨Y​eetus Diabeetus(male)⟩ The velocity at periapsis when you are on course

16:08 <queqiao-_> ⟨D​amien⟩ I've only ever used the Mk1 eyeball so not sure

16:09 <queqiao-_> ⟨P​aculino (ŝi/ri/she/they)⟩ https://en.wikipedia.org/wiki/Delta-v_budget#Earth%E2%80%93Moon_space%E2%80%94low_thrust

16:11 <queqiao-_> ⟨P​aculino (ŝi/ri/she/they)⟩ Sun-Earth is listed with lunar stuff

16:12 <queqiao-_> ⟨D​amien⟩ @Yeetus Diabeetus(male) https://cdn.discordapp.com/attachments/480397772248580098/647881378326642699/screenshot97.png

16:12 <queqiao-_> ⟨D​amien⟩ https://cdn.discordapp.com/attachments/480397772248580098/733649577449881600/screenshot116.png

16:13 <queqiao-_> ⟨D​amien⟩ use the diameter of the earth's orbit to eyeball the rough distance

16:13 <queqiao-_> ⟨D​amien⟩ use the diameter of the moon's orbit to eyeball the rough distance (edited)

16:13 <queqiao-_> ⟨D​amien⟩ you want to be at or approaching zero vertical velocity near the L1/L2 points

16:14 <queqiao-_> ⟨D​amien⟩ if you need to, point slightly outwards (but still in the plane of the earth/sun) and swing back towards the line between the two

16:14 <queqiao-_> ⟨D​amien⟩ you'll get a feel for it. the most common error is too much vertical velocity

16:15 <queqiao-_> ⟨D​amien⟩ so start small and push outwards

16:16 <queqiao-_> ⟨D​amien⟩ https://cdn.discordapp.com/attachments/480397772248580098/574299660340953109/screenshot11.png

16:16 <queqiao-_> ⟨D​amien⟩ https://cdn.discordapp.com/attachments/480397772248580098/574299651973447691/screenshot12.png

16:16 <queqiao-_> ⟨D​amien⟩ you can capture into the right orbit from either the near or far side

16:16 <queqiao-_> ⟨D​amien⟩ in this pic it's the far side

16:17 <queqiao-_> ⟨D​amien⟩ this isn't entering an L1/L2 orbit but does swing by it to do something else https://cdn.discordapp.com/attachments/480397772248580098/773524351605669898/unknown-9.png

16:20 <queqiao-_> ⟨D​amien⟩ https://cdn.discordapp.com/attachments/480397772248580098/773524351991283752/unknown-44-1.png

16:32 <queqiao-_> ⟨P​aculino (ŝi/ri/she/they)⟩ Solar powered grooming

16:32 <queqiao-_> ⟨P​aculino (ŝi/ri/she/they)⟩ https://cdn.discordapp.com/attachments/480397772248580098/900783697219956816/20211021_123218.jpg

16:39 <queqiao-_> ⟨S​umguy⟩ Is that 18% less just for TLI, TLI+capture, or what?

16:43 <raptop> A clean cat is a cat that gains substantially extra energy in the sun

16:43 <queqiao-_> ⟨l​pg⟩ TLI is _more_ expensive, but there _is_ no capture burn is the point

16:44 <raptop> Compare with ひてん and LADEE?

16:47 <queqiao-_> ⟨S​umguy⟩ So TLI+capture then?

16:49 <queqiao-_> ⟨S​umguy⟩ So the TLI of a low-energy ballistic capture mission is 18% less than the TLI+capture of a traditional hohmann transfer mission then? (edited)

16:59 <queqiao-_> ⟨S​tonesmile⟩ Do note that the only dV you save during the capture is the dV used to get a loosly bound orbit; lowering the orbit to a 100 km x 100 km orbit still takes a bunch of dV

17:00 <queqiao-_> ⟨Q​uadrupole⟩ TLI of ballistic capture costs about 80 m/s more (since you need to almost leave earth SOI); capturing into LLO fron normal TLU costs 830 m/s, whereas that for low-energy transfer plus a DSM is 680 m/s. That's where the 18% figure comes from

17:01 <queqiao-_> ⟨Q​uadrupole⟩ TLI of ballistic capture costs about 80 m/s more (since you need to almost leave earth SOI); capturing into LLO fron normal TLI costs 830 m/s, whereas that for low-energy transfer plus a DSM is 680 m/s. That's where the 18% figure comes from. (edited)

22:34 <queqiao-_> ⟨R​ad⟩ How stable are the orbits? IRL they’re stable in periods of like 20 days or so? Will I need to do frequent corrections?

22:35 <queqiao-_> ⟨A​l2Me6⟩ They are exactly as stable as they are IRL, so, yes.

22:35 <queqiao-_> ⟨A​l2Me6⟩ (@Stonesmile has experience.)

22:36 <queqiao-_> ⟨R​ad⟩ Do they just get ejected into Solar orbit?

22:36 <queqiao-_> ⟨R​ad⟩ Or into Earth orbit?

22:37 <queqiao-_> ⟨R​ad⟩ (Really wish there were a way to automate corrections, I really don’t want to have to switch back every 20 days

22:37 <queqiao-_> ⟨R​ad⟩ (Really wish there were a way to automate corrections, I really don’t want to have to switch back every 20 days) (edited)