UmbralRaptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Fuchs. We currently target 1.5.1, 1.6.1, 1.7.x, 1.8.1, and 1.9.1. <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly… | <egg> also 4e16 m * 2^-52 is uncomfortably large
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gravShark. — hrmmm. does this look weird to anyone or am I seeing things? note the combination of navball orientation, what I'm telling mechjeb to do, and the actual craft orientation
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gravShark. — this one's really wrinkling my brain and i can't figure out what's going on
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lpg. — the navball sure looks like the odd one out
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gravShark. — im just trying to run some landing sims i guess, and i thought i was just screwing up the landings but there's some really strange behavior hapening
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lpg. — is 'impact in 84s' sensible? you seem awfully high and awfully slow
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lpg. — sims and principia _do_ have issues
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lpg. — krash sims and principia _do_ have issues (edited)
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gravShark. — that would explain it
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gravShark. — the altitudes KJR and so on are reading also don't really seem ri ght
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lpg. — in my experience, switching vessels (within the sim) sorts it all out
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gravShark. — surface vs SL atlitudes will both be at like 6km or more, and i still impact
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gravShark. — o rly, i will try that
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lpg. — toggling 'hack gravity' on and off _might_ also fix it. I can never remember whether that's a theory or something I've actually tried
<discord->
gravShark. — switching vessels in the sim and back to it fixed it
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<discord->
Sirius. — How much delta V I need for TLI from a parking orbit?
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Sirius. — Every time I don't have enough of too much
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Sirius. — Every time I don't have enough or too much (edited)
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Sirius. — Sometime it tells me 2800 m/s, sometime +3000
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Sirius. — Pretty far with these activate
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Acer_Saccharum. — can you not execute the burn manually without instant impulse and inertially fixed active?
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Sirius. — Nope
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Sirius. — I have SRB to do the burn
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Sirius. — I'm on an early career
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Acer_Saccharum. — yes, then play around with the flight plan until you have a trajectory that hits the moon and uses the exact amount of ∆v you have in that stage
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Sirius. — But 3150 m/s should be enough even with SRB?
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Acer_Saccharum. — yes, my suggestion is to create a burn that uses the exact amount of ∆v yuou have
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Kirk. — 3150 is about the minimum
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Acer_Saccharum. — yes, my suggestion is to create a burn that uses the exact amount of ∆v you have (edited)
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Acer_Saccharum. — ~3150 is the minimum, but there is no maximum
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Sirius. — That's the tricky part
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Acer_Saccharum. — just create a maneuver that uses every last m/s your solid stage has
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Acer_Saccharum. — and hits the moon
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Acer_Saccharum. — let's say your SRM stage has 3,237 m/s of ∆v, then you should create a maneuver in the flight plan that hits the moon and uses exactly 3,237 m/s of ∆v
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Acer_Saccharum. — I guarantee you can hit the moon using 3,237 m/s if you can hit it with 3,150 m/s
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Kirk. — In my experience 3123 m/s is the absolute bare minimum to impact under optimal conditions
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Kirk. — you'll probably want 3200 or more though
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Sirius. — With SRB? @Kirk
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Acer_Saccharum. — whether or not you use an SRB doesn't affect the minimum
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Acer_Saccharum. — I assume that your stage has a high acceleration, which should if anything slightly reduce the minimum requirements
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Kirk. — SRB makes no difference
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Sirius. — Even with Inertially Fixed with Instant impulse?
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Sirius. — That are activate
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Kirk. — dunno about principia
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Acer_Saccharum. — why are you using those modes?
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Sirius. — Someone tells me that I have to use them for SRB
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Acer_Saccharum. — whoever told you that is wrong
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Acer_Saccharum. — you need to use those if you want Mechjeb to be able to execute the maneuver automatically
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Silavite. — You need to use inertially fixed if your stage lacks attitude control
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Sirius. — I don't have avionics to control the probe when the SRB stages are activated
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Kirk. — Inertially fixed you'll probably want, if its unguided
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Sirius. — Yeah
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Acer_Saccharum. — but you still don't want instant impulse if you're doing it manually
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Sirius. — What is it for? (Instant Impulse)
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Acer_Saccharum. — it assumes the ∆v is applied in a single instant, rather than smeared out over a few seconds or minutes
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Acer_Saccharum. — if you're using anything like Mechjeb to automatically execute the burn I believe you need to use it
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Acer_Saccharum. — however it will likely lead to inaccuracies, since your vessel definitely doesn't have infinite thrust
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Sirius. — Yeah
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Acer_Saccharum. — it assumes the ∆v is applied in a single instant, rather than being smeared out over a few seconds or minutes (edited)
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Silavite. — From some of egg's statements, I think the Principia flight planner doesn't play nicely with SRBs as an active engine.
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Sirius. — Yup
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Sirius. — So I've timewarp a little bit and I could impact the Moon, but I didn't have no more electricity
<discord->
Sirius. — So it's more when you launch it
<discord->
Sirius. — So it's more when you ignite the TLI stage (edited)
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Sirius. — So I've timewarp a little bit and I could impact the Moon, but I didn't have no more electricity to ignite the SRB (edited)
<discord->
Sirius. — Pretty happy with that, I was hopping for an impact with the moon, but nope. I've done it without Instant Impulse
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[Principia] larryfast commented on issue #2594: I'm getting "Principia DLL failed to load" on fuchs for 1.9.1 - https://git.io/JfK6p
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[Principia] jlNiap commented on issue #2248: Vehicle unstability if equipped with robotics parts - https://git.io/JfK1V
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[Principia] pleroy opened pull request #2596: A better syntax for the selectors of RigidMotion and AcceleratedRigidMotion - https://git.io/JfKyq
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[Principia] pleroy synchronize pull request #2596: A better syntax for the selectors of RigidMotion and AcceleratedRigidMotion - https://git.io/JfKyq
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[Principia] pleroy commented on issue #2594: I'm getting "Principia DLL failed to load" on fuchs for 1.9.1 - https://git.io/JfKy9
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[Principia] eggrobin labeled pull request #2596: A better syntax for the selectors of RigidMotion and AcceleratedRigidMotion - https://git.io/JfKyq
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[Principia] pleroy synchronize pull request #2596: A better syntax for the selectors of RigidMotion and AcceleratedRigidMotion - https://git.io/JfKyq
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[Principia] ... and 2 more commits.
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[Principia] pleroy closed pull request #2596: A better syntax for the selectors of RigidMotion and AcceleratedRigidMotion - https://git.io/JfKyq
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[Principia] pleroy opened pull request #2597: Fix a bug where Diagonalize would produce non-unit quaternions - https://git.io/JfK5m
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[Principia] eggrobin labeled pull request #2597: Fix a bug where Diagonalize would produce non-unit quaternions - https://git.io/JfK5m
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[Principia] pleroy closed pull request #2597: Fix a bug where Diagonalize would produce non-unit quaternions - https://git.io/JfK5m
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[Principia] pleroy pushed 2 commits to master [+0/-0/±6] https://git.io/JfKbe
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[Principia] pleroy 1e8ee98 - Fix a bug where Diagonalize would produce non-unit quaternions.
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[Principia] pleroy ab70029 - Merge pull request #2597 from pleroy/Diagonalize Fix a bug where Diagonalize would produce non-unit quaternions
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[Principia] larryfast closed issue #2594: I'm getting "Principia DLL failed to load" on fuchs for 1.9.1 - https://git.io/JfKYa
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[Principia] larryfast commented on issue #2594: I'm getting "Principia DLL failed to load" on fuchs for 1.9.1 - https://git.io/JfKb8
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[Principia] pleroy commented on issue #2594: I'm getting "Principia DLL failed to load" on fuchs for 1.9.1 - https://git.io/JfKbN
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