<Rokker>
wb99999999: it makes it look like a prop attached to string in something like the thunderbirds
<wb99999999>
not many engines
<Rokker>
right
<Rokker>
i think
<wb99999999>
guess this is what happens when you don't start from V2 technology
<Rokker>
anyways yeah
<Rokker>
thats my favorite rocketry footage ever
<Rokker>
not the first spacex landing
<Rokker>
not the apollo 11 launch
<Rokker>
that little clip
<Rokker>
is fucking amazing
<Rokker>
wb99999999: it was an electrical fault
<Rokker>
causes 2 of the chambers to oscillate back and forth
<awang>
Rokker: Oh... Oh dear
<wb99999999>
this thing first launched the same year America landed man on the moon...
<awang>
That looks fun
<Rokker>
yes
<wb99999999>
this is just sad
<wb99999999>
no wonder they slashed the project
<wb99999999>
oh and Rokker: when I said thing about not starting with V2 I meant the number of chambers are obscene
<wb99999999>
it's just way too many of it
<Rokker>
yeah
<Bornholio>
like the rus, manufacturing large chambers is harder and so is proof testing them. plus atlas is 5 chambers at ground why is 8 so many
<wb99999999>
Atlas is 5 chambers for more than 2500 kN of thrust
<wb99999999>
this is 8 chambers for... what was it?
<wb99999999>
240kN?
<Rokker>
wait what
<Rokker>
Bornholio: 5 chambers?
<Bornholio>
reminder lr101's
<Rokker>
well 5 chambers attached to 5 engines
<Rokker>
and its only that many because they were scared of ignition in the sky
<Rokker>
in flight
<wb99999999>
for me it's just too little thrust per chamber for an orbital vehicle
<wb99999999>
the 8 chambers combined produce only about the same amount of thrust as the V-2
<awang>
What first-stage engine do you guys use for early satellites?
<awang>
LR-89 series, RD-107s, RD-108s, LR-79s, or something else?
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<wb99999999>
you, have, LR-89
<wb99999999>
why don't you use it then
<wb99999999>
especially if you have the AZ50 version
<wb99999999>
it's very high performing
<wb99999999>
wait
<wb99999999>
that was LR87 right?
<wb99999999>
stupid me
<awang>
LR87 is kerolox, isn't it?
<awang>
And I don't have it yet; haven't paid ECM
<awang>
Although I have the option
<awang>
Trying to decide to avoid wasting money
<blowfish>
okay, looks like I can get the sounding rocket telemetry unit + some science instruments to orbit on a redstone + 2 AJ10-27 stages. Should I do it?
<blowfish>
or wait for real probes and baby sergeants?
<awang>
blowfish: Do it
<awang>
Even better, waste money on a Black Arrow
<blowfish>
black arrow is 1956 tech, I'm not there yet
<awang>
Wait, you get AJ-10s first?
<awang>
Never mind then
<awang>
I'm dumb
<Bornholio>
I usually don't push to orbital till 56 tech
<Bornholio>
but you can, a-6+2A-4 side boosters and then stacke a x3 and x1 XSAR stages
<awang>
Is that with the default pad, or after an upgrade?
<Bornholio>
thats above 20t, thats why the gamma's are nice
<awang>
Ah
<awang>
Only reason I went for the Black Arrow was because the pad was still upgrading
<awang>
But in any case
<awang>
blowfish: Do it!
<blowfish>
awang: AJ10-27 is really an upgraded aerobee
<blowfish>
different from the normal AJ10 progression
<awang>
blowfish: Oh right, that AJ10
<awang>
I knew that
<awang>
I'll have to try that build... Didn't even buy the A-4 this time around
<blowfish>
can't figure out why my 3rd stage isn't igniting though...
<Bornholio>
pressure?
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<awang>
Didn't MJ used to calculate dv of 0 when pressure-fed reqs weren't met?
<blowfish>
oh, took more nitrogen than I thought to achieve propellant stability
<awang>
You use the attitude control thrusters for ullage instead of sep motors?
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<blowfish>
awang: yes - I already needed RCS on the 2nd stage so it didn't seem worth adding sep motors on the 3rd stage
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<wb99999999>
hey bornholio
<wb99999999>
did you try the thing I said about?
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<awang>
blowfish: Makes sense
<awang>
Speaking of which, just how much thrust do you need for proper ullage?
<awang>
I've had some 69/111N class atttitude thrusters going for ~45 seconds
<awang>
On a ~800kg stage
<awang>
And apparently that isn't enough to get stable ullage
<awang>
And after that, they exploded due to overheating o_O
<awang>
11000+K?
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<awang>
And then the Gamma 2 exploded to overheating?
<awang>
Hm
<wb99999999>
lol
<wb99999999>
it shouldn't be
<awang>
Is there a wya to get a "proper" interstage ring?
<awang>
Like separate the tank, *then* the ring?
<awang>
Instead of both at once?
<wb99999999>
umm
<wb99999999>
install the interstage fairing base backward
<wb99999999>
and have another decoupler?
<awang>
...ewwww
<awang>
That works
<wb99999999>
lel
<awang>
But seems gross
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<wb99999999>
not really
<wb99999999>
eveytime you make a boattail
<wb99999999>
you're doing the backward thing
<awang>
boattail?
<wb99999999>
also called an "engine shroud"
<wb99999999>
for first stage engines people often make a fairing to hide the upper nozzle/pump assembly
<wb99999999>
so it looks more like a real rocket engine assembly like, say, delta 4
<wb99999999>
or maybe...I had another idea
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<awang>
I didn't know that
<awang>
Interestint
<awang>
s/int/ing
<Qboid>
awang meant to say: ingerestint
<awang>
Wait
<awang>
Crap
<wb99999999>
now what are u going to do lol
<wb99999999>
I'll show you an example after my game loaded
<wb99999999>
and I think there's another way to do the interstage ring
<wb99999999>
but it might cause some trouble
<wb99999999>
so you put the intstage fairing base directly below the stage tank
<wb99999999>
and only then you attach your engine on the fairing base
<wb99999999>
use an one-piece PAYLOAD fairing wall to from the interstage
<wb99999999>
this is because you can decouple a payload fairing wall
<wb99999999>
oh and the whole thing is still backward
<wb99999999>
so when you stage, the interstage node would decouple your lower stage tank
<wb99999999>
the fairing would decouple and fall off
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<soundnfury>
NathanKell|AWAY: I feel like facilities costs are too low. They're almost negligible next to integration, R&D, and astronauts.
<soundnfury>
(e.g. right now I'm at 1916/yr integration, 2000/yr astronauts, 3400/yr research teams... and 201/yr facilities.)
<soundnfury>
^ that's facilities maintenance cost, of course. the upgrade costs are fine
<awang>
!tell wb9* Ah, I see what you mean by a boattail. I'll have to do that. Looks much better, and looks like it'd work the way I want
<Qboid>
awang: I'll redirect this as soon as they are around.
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<awang>
Gah, why have the B52 cockpit when no other Mk 3 parts are available
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<Maxsimal>
o/
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<awang>
Man, these launch pad limits...
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<Starwaster>
!tell NathanKell Sorry I haven't had a chance to work on RF thermals this past week. Been busy preparing for Irma and I'm expecting that I'll probably be without power for awhile
<Qboid>
Starwaster: I'll redirect this as soon as they are around.
<borntosleep>
.BigHug Starwaster praying for you
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<Starwaster>
thanks
<Starwaster>
btw, always be skeptical of early turn predictions
<Starwaster>
800K+ already without power and the eye only JUST touched the keys
<Starwaster>
it's going to go right up the peninsula like a buzz saw :(
<Starwaster>
hopefully it weakens by the time it reaches Tallahassee but probably not
<Bornholio>
yeah, hoping that the drop to 3 is faster than expected
<Starwaster>
ok have to run, still stuff to do
<Bornholio>
luck
<Starwaster>
l84
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<Probus>
Leave for 2 seconds and they totally change the Forum on me. Geez....
<Bornholio>
its lazy multilanguage design. Icons replacing words instead of having proper language select/detect
<Bornholio>
silly thing is that the icons have tooltip/alttext that needs to language detect
<Bornholio>
anyone testing out 1.3.1?
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<soundnfury>
aaaand lunar impact in october 1956 (with an unguided kick stage)
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<wb99999999>
click
<Qboid>
wb99999999: awang left a message for you in #RO [10.09.2017 10:33:38]: "Ah, I see what you mean by a boattail. I'll have to do that. Looks much better, and looks like it'd work the way I want"
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<ProjectThoth>
How difficult is it to develop a new engine bell that can slide over an existing engine for better vacuum performance, compared to just developing a new engine?
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