So I'm working my "bombing the moon" muscle and have a small problem. As far as I can tell, the Atlas inserts the spacecraft into the wrong orbital plane. The ride to orbit goes swimmingly but when I try to configure Lunar Transfer MFD for the TLI burn, I get the error "Unable to find solution" The attached picture shows I'm obviously off plane. I'm running Orbiter 2010-P1, LTMFD and the LRO addon are all up to date. Plus I'm following the included documentation. Gremlins? My stupidity? I dont understand what is going on and REALLY REALLY want to bomb the moon! Help!
Problem Flying LRO/LCROSS, Atlas launching into the wrong plane?
- Thread starter gregjns
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flying coffin
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I wrote the docs for the LRO/LCROSS addon and they should be historically
accurate. The Atlas did indeed launch into an orbit which was not coplanar
with the moon, but did intersect the plane of the moons orbit at the correct time, so my first guess is that your Tej needs to be adjusted. I'm about to
crash out for tonight, but I will check this out for you tomorrow.
-Chris
accurate. The Atlas did indeed launch into an orbit which was not coplanar
with the moon, but did intersect the plane of the moons orbit at the correct time, so my first guess is that your Tej needs to be adjusted. I'm about to
crash out for tonight, but I will check this out for you tomorrow.
-Chris
So I re-ran the mission from launch, hit a perfect parking orbit (185.0x185.1km) still following the documentation exactly EXCEPT for starting the TLI countdown (clicking EXE) before entering the 900 seconds at 21:53. Somehow this worked. I seem to be off schedule by a couple minutes as the earliest LRO sep occurs at 22:19 UTC. Not sure this later than real life TLI burn screws anything up so I have included a screenshot that shows my current orbital situation.
Could last nights problem been caused by a later than real life 2nd stage ignition? I got kinda distracted by a strapping lass at the coffee shop I was at and started the burn ~5-10 seconds past what the documentation says.:facepalm:
Could last nights problem been caused by a later than real life 2nd stage ignition? I got kinda distracted by a strapping lass at the coffee shop I was at and started the burn ~5-10 seconds past what the documentation says.:facepalm:
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I tried and was unable to duplicate the problem. A late centaur ignition may
have been the problem. The timing is a bit critical. The late TLI shouldn't be a real problem
as long as there is enough DV left in the centaur for the LCROSS
course correction. Setting up transx for the proper LCROSS orbit is the hardest part.
have been the problem. The timing is a bit critical. The late TLI shouldn't be a real problem
as long as there is enough DV left in the centaur for the LCROSS
course correction. Setting up transx for the proper LCROSS orbit is the hardest part.
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