00:00 <Bornholio> should this not be deriveable on the aerobee Payload: 68 kg (149 lb). Thrust: 18.00 kN (4,046 lbf). Gross mass: 727 kg (1,602 lb). Height: 7.80 m (25.50 ft). Diameter: 0.38 m (1.24 ft). Apogee: 130 km (80 mi). Payload: 68 kg (149 lb). Thrust: 18.00 kN (4,046 lbf). Gross mass: 727 kg (1,602 lb). Height: 7.80 m (25.50 ft). Diameter: 0.38 m (1.24 ft). Apogee: 130 km (80 mi).

00:01 <lamont> yeah that’s what i meant — from suborbital, doing a single burn, full thrust, hoverslam

00:01 <lamont> no dribble throttle and hovering around and multiple burns

00:03 <leudaimon> Bornholio that is the Aerobee with the AJ-27 engine, right?

00:04 <Bornholio> xasr isn't it?

00:04 <Bornholio> https://history.nasa.gov/SP-4401/ch4.htm

00:04 <leudaimon> the SL thrust of the XASR is 11kn

00:06 <Bornholio> ah yes my stats are the 150

00:07 <Bornholio> both the aerobee hi and original spec'd 68kg

00:08 <leudaimon> yeah, was just copying this info about the difference in thrust between the Hi and the original

00:08 <Bornholio> https://space.skyrocket.de/doc_lau/aerobee.htm do we need all the engines :P

00:10 <leudaimon> have you seen the issue I posted on the RO repo?

00:10 <Bornholio> yes, that why i commented

00:10 <leudaimon> hm... did you find any info on the engines' mass?

00:11 <Bornholio> i'm browsing dtic.mil for actual data, NTRS is lacking

00:12 <leudaimon> one option would be to work up from the mass of the whole rocket, but a lot of assumptions would be necessary

00:13 <Bornholio> all the launches are on dtic, just need to find the ones we need

00:19 <Bornholio> dtic is being slow and laggy

00:23 <Bornholio> leudaimon: bah everything is failing to load tonight

00:49 <soundnfury> Pap: trying to decide whether to build any planes. Does runway kraken count as revertable kraken?

00:50 <Pap> I would say yes

00:50 <soundnfury> ty

00:50 <Pap> Leuuuuuuuuuuuuuuu

00:53 <soundnfury> hmmm, looks like cockpits have indeed lost their ModuleUnpressurisedCockpit tags at some point. Someone should fix that ;)

00:53 <Bornholio> again?

00:53 <Bornholio> I love pushing the literal buring edge of that

00:54 <Bornholio> burning

00:59 <Pap> Jesus, why does that keep happening?

00:59 <Pap> Oh wait, I know why

00:59 <Pap> Damn

00:59 <Bornholio> why why why

00:59 <Pap> soundnfury: can you please post an issue so I don't forget?

01:00 <Pap> That module was never added to the spreadsheet. It was one that NK added separately by the seat of his pants

01:00 <Bornholio> also gott a make sure to tell poeple how that works in the description of the pod/ccokpit

01:18 <soundnfury> Pap: Do check history so you get the name of the module right, it was wrong at one point and I can't remember what it should be.

01:31 <soundnfury> Pap: question about KRASH (because planes need sims). I see it has a config interface; does it default to the correct config for RP-1?

01:33 <soundnfury> (wouldn't want to get a sim for the wrong price in the race-game)

01:38 <soundnfury> hmm, looks like there's supposed to be an RP-0 config, and it's not showing up.

01:41 <soundnfury> it might be because the regular KRASH config lives in PluginData?

01:43 <soundnfury> Pap: would it be correct just to copy RP-1's KRASH_Settings.cfg into GameData/KRASH/PluginData/KRASHCustom.cfg?

01:44 <Pap> Yes, that is what should work soundnfury

01:44 <soundnfury> ty

01:51 <soundnfury> Okay, plane checks out in sim, no nasty surprises.

02:03 <Bornholio> pap love some of the new loading screen images

02:04 <soundnfury> concur

09:33 <leudaimon> Bornholio sorry I was gone already when you replied... well, I'll wait a bit more to see if any solid info shows up, otherwise I'll make a PR with the change I tested

12:10 <Bornholio> http://rocketrelics.net/aerobee100_full.jpg

12:10 <Bornholio> http://rocketrelics.net/aerobee150_engine.jpg

12:12 <Bornholio> http://rocketrelics.net/aerobee_150_schematic.jpg

12:18 <Bornholio> http://rocketrelics.net/aerobee150_aerobee100_engine.jpg

12:26 <Bornholio> okay fast math on the 100, its 125mm D, ~6mm thick, so outer shell is 305cm3, if its stainless steel, then 3000 grams, so internal and end cap of 5kg more doesn't seem wrong

12:27 <leudaimon> Your link does not work for me

12:27 <leudaimon> the 100 is the one using XASR?

12:27 <Bornholio> thickness estimate is comming from weld bead http://rocketrelics.net/liquid_propulsion.htm

12:29 <Bornholio> http://www.astronautix.com/2/21al-2600.html

12:33 <leudaimon> hm, tickness link also doesn't work... but do you get to some conclusion from those?

12:33 <leudaimon> in the current config the XASR is 13 kg, and making it have the same TWR as the AJ10-37 gives it 35kg...

12:34 <Bornholio> not sure why you can't see those rocket relic links

12:35 <Bornholio> i'll re-host the images

12:37 <Bornholio> https://i.imgur.com/VJDeEbH.jpg 100 and 150 side by side with scale

12:40 <Bornholio> An AEROBEE 100 liquid fueled rocket sustainer (designated 45AL-2600) derived from the WAC Corporal surface to surface missile propulsion system.

12:40 <Bornholio> The Aerojet General Aerobee 100 was the first purpose-designed American high altitude sounding rocket and the precursor to the Aerobee 150. It used an entirely different sustainer engine that burned IRFNA (Oxidizer) and RP1 (Fuel). Engine starting was accomplished with the hypergolic reaction between IRFNA and a starting slug of UDMH. The engine produced a nominal thrust of 2600 pounds for a duration of 40 seconds. The rocket was capable of a

12:40 <Bornholio> peak altitude of 92 miles carrying a 40 pound payload. There were only 20 Aerobee 100 rockets produced. The Aerobee 100 used the same 2.5KS-18000 solid propellant booster as the Aerobee 150.

12:43 <leudaimon> cool, this must be the XASR by the thrust... and looking of those images, the 15% difference in weight currently in the configs seems reasonable

12:43 <leudaimon> just a matter of figuring out any of the masses

12:44 <Bornholio> https://i.imgur.com/Q4hNk8I.jpg here is the throat and combustion plate imaged

12:46 <Bornholio> have a fun day

18:55 <Pap> soundnfury:

18:55 <Pap> are you around still?

22:02 <soundnfury> Pap: heya, just got back from wörk

23:31 <egg> ;seen lamont

23:31 <egg> no kmath?

23:31 <egg> hm.