<Starwaster>
does anyone know what g-dot would refer to? Context is Apollo 11 reentry: 191:58:13 Evans: Okay, Mike. Of course, this is in the event the G&N and the EMS quits and you have to fly the constant-g; and what we're trying to do is to extend the constant-g range from 1,100 to 1,500 miles. We've run this procedure in the simulator, and it works fine. Basically, I'll go through it - just go through it, and then if you have any questions, come back. But it's
<Starwaster>
the same lift vector up until Max g, and then lift vector down, and then modulate the lift vector until g-dot goes to zero. Okay, this procedure is essentially the same so far. And then hold g-dot zero until you pass the Retro elapsed time of V-circular; and then after you pass this Retro elapsed time of V-circular, roll to a gimbal angle of 45 degrees, and then hold this constant bank angle of 45 degrees until you come to the Retro elapsed time of
<Starwaster>
drogues. Over.
<Starwaster>
ok sorry that was spammier than I anticipated
<stewartx>
all good
<wb99999999>
okay..
<stewartx>
and no clue what it means
<wb99999999>
my instinct is that is referring to a instrument
<wb99999999>
...AN instrument
<stewartx>
is it bad spacecraft etiquette to put an rcs thruster next to the crew hatch?
<Starwaster>
it's bad if you fire it off when someone is next to it no matter where it is
<stewartx>
i'lll be sure to include that in the SOM and i'll add a placad
<stewartx>
using a saturn 1 b to put a 200kg satelite into low polar orbit, seems like overkill
<Bornholio>
G-dot should be change in Accel unless i'm stupid, but thats a given also :)
<Bornholio>
lol my recovery pod is cheesewheeling across central mexico
<stewartx>
poor astronauhts
<Bornholio>
lol just a mechjeb case a sounding rocket core, thre antenna, three empty snubotrons and nose cone, parachutes blew away after landing detect cut them
<Bornholio>
things you do when you still have no heat shields :P
<wb99999999>
still waiting for a fix for side boosters
<Bornholio>
mine work? what is your symptom?
<wb99999999>
Starwaster has recreated the problem so it's not just me
<wb99999999>
with lamont's MJ-PEG10, the stage simulation got messed up when you have side boosters
<wb99999999>
it would treat the side boosters as if they'd never separate
<Bornholio>
booster phase < pitch program...
<Starwaster>
bornholio the problem is that stage analysis does not properly compute delta-v both total for the vehicle and on a per stage basis
<wb99999999>
it's not directly related to PEG10, but switching to older MJ would fix this
<Bornholio>
ah
<Bornholio>
cause so far i'm having smooth as greased glass
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<wb99999999>
try a large side booster
<ProjectThoth>
no
<ProjectThoth>
Out of curiosity, does anyone have any data on the methalox version of the RL-10? I'm curious as to how it worked.
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<Starwaster>
bornholio are you actually looking at the delta-v display? This doesn't necessarily cause an issue with PEG getting to orbit. It might or it might not
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<Bornholio>
I normally keep my booster sep inside my pitch program so as long as i simulate a run and tune my pitch enough it runs smooth
<Starwaster>
not what I asked
<Starwaster>
look at the delta-v window both int he VAB and in flight screen
<wb99999999>
I found out the problem when I built a rocket which can't reach orbit without shedding the booster mass
<Starwaster>
and see if it is displaying correct delta-v stats
<wb99999999>
the delta-v stats gave me very weird reading
<Bornholio>
K i'll look at my next recon launch it has boosters
<wb99999999>
and PEG goes haywire and says it can't find a solution to the booster
<wb99999999>
but from building rocket so many times I know by my gut this rocket has enough to go to orbit
<wb99999999>
and that's when I find out
<Starwaster>
some of my designs do ok in spite of the problem and some cause PEG to fail convergence
<Bornholio>
never seen a failed to converge
<wb99999999>
than's when the calculation ends up with not enough delta-v to orbit
<wb99999999>
just try the 120'' boosters tbh, they cause the bug to surface because their dry mass is very large
<Bornholio>
yisss landing my photo pods in central florida, kerbal senses improving
<Bornholio>
wish list for KSP II, UI panes in seperate Window so goes on other screen, preferably map view also
<ProjectThoth>
I just want maneuver nodes to be less finicky.
<Starwaster>
wb99999999 - try this please:
<Starwaster>
start with a stock Kerbal-X and remove all resources from tanks (if any remain)
<Starwaster>
all engines kerolox
<Starwaster>
(dont add resources yet)
<Starwaster>
upper stage (payload) configure the engine, preferably hypergolic like aerozine - probably doesnt matter exactly what, but just so we see the same thing
<Starwaster>
at that time, the delta-V window should display something like 3500 m/s dv
<Starwaster>
next fill all of the center tanks
<Starwaster>
at that time, stage 4 should display a delta-V reading along with stage 2
<Starwaster>
NOW: This is where things get interesting
<Starwaster>
fill up one of the booster tanks
<Starwaster>
its stage will display its correct delta-V...
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<Starwaster>
AND STAGE FOUR DELTA-V WILL REVERT TO ZERO
<wb99999999>
trying it now
<Starwaster>
I wish squad would fix landing gear so that the feet don't unfold to weird angles
<wb99999999>
so what am I supposed to get out from the experiment?
<wb99999999>
oh wait
<wb99999999>
darn, I have an older version of MJ
<wb99999999>
because MJPEG10 would give me faulty reading
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<Starwaster>
the results of the experiment for me are that it correctly displays upper stage delta-V until a booster tank connected radially is filled up
<Starwaster>
at that time, the upper stage (not counting upper stages with sack decouplers) will zero out
<wb99999999>
sounds about right
<wb99999999>
but if you move the side booster to a separate stage, Titan 4 style
<wb99999999>
the reading will go back to normal
<Starwaster>
not sure I follow, it's already in a separate stage...? or you mean the engine itself?
<Bornholio>
ask for 300x1710km get 300.022x1710.003km, hot staging included, boosters, 2 castors, lr89, lr105, gamma-2 and aj early stages, tiny dab of rcs at end, inclination near perfect
<Starwaster>
jesus christ... distant exploding part scared me so badly that I slammed my mouse on the desk
<ProjectThoth>
Starwaster: It happens.
<Starwaster>
what's cool though is that I steered my capsule to within a couple hundred meters of it during reentry using negative lift
<Bornholio>
last night i had to yell at the cat for missing a landing on a computer case thought a racoon was try in the room
<Bornholio>
get
<Starwaster>
you realize when you say your cat missed the landing.... that I think stuff like MJ landing prediction?
<Starwaster>
dont you think you're expecting a little much out of your cat?
<ProjectThoth>
kitty!
<Bornholio>
yes but this was actually a black cat named Jiji his landing prediction should be much better
<Bornholio>
claws out on metal case
<Starwaster>
Jiji sounds badass
<Starwaster>
in his crew file, the badass bit is set
<Starwaster>
he probably would wear an orange suit
<Bornholio>
he has murdered many mice, but lately he keeps his claws in, we have had very tired mice in the living room
<Bornholio>
I think the last mouse had been caught before, came over and hopped onto my glove when I went to escort himm out.
<Starwaster>
has Jiji ever presented you with dead mice?