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ORBITER-FORUM will be temporarily closed at 2026-07-23 18:00 UTC while we complete some OF maintenance tasks. The amount of downtime is expected to take up to one hour, but probably less.
 This soundpack covers the full undocking and separation phase of Eagle and Columbia from just prior to AOS with Houston moments before undocking, ending just prior to LOS before the start of the PDI pass. In addition, a full playback in real-time of the undocking and SEP maneuver up to GET...
 An alternate history Apollo 13 mission scenario set assuming the accident never happens, and 13 goes on to fly the successful third lunar landing at Fra Mauro. Complete coverage of the flight from launch to recovery based on the original flight plan per the press kit.
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INSTALLATION:
Just...
Here's the nominal Earth return close to the press kit info:
(Requires IMFD)
BEGIN_DESC
Apollo 13 on the return to Earth in the PTC about 18 hours from splashdown. Planned EI at GET 240 hrs 50 mn. Splashdown at GET 241 hrs 4 mn (nominal flight plan).
END_DESC
BEGIN_ENVIRONMENT
System...
Here is a free-return Apollo 13 post TLI trajectory. I was working on some alternate history abort scenarios. For this I was imagining some sort of SPS failure prior to the hybrid transfer that forces an abort without the O2 accident ever happening. All other systems otherwise fine in the...
I didn't know about the conversion method. Just figured you could put the min/sec left to right off the decimal point. Oops.
Looks like it's a 30 km difference there on a SW-NE line from what I used. Still within range of how you fly the bank angles.
The splash coordinates I'm using is the one included in the "Lost 13" add-on, -21.3824 S -165.2142 W (Wikipedia A13 mission page).
Here's the technique for the "lift vector up" scenario:
1. Maintain the attitude that's there at scenario start (bank 45 R, pitch using a combo of the Earth orbit...
That was the inspiration for trying it in Orbiter. I was already working on my own custom historical mission scenarios, and alternate historical abort options, and just thought to move it forward from the time of the accident. Thought it was kinda neat how it matched up pretty close with that...
Thanks. :tiphat:
Here's a scenario for flying Odyssey lift vector up:
I plan on updating the zip file. For now, I'll just post it here.
BEGIN_DESC
Odyssey one minute from entry interface. This time, the vacuum perigee altitude (VPA) was lowered to around 38 km (historic) back at MCC-7...
 Here is a simulation of the trajectory of what would have happened to Apollo 13, if the crew were unable to power up Aquarius as a lifeboat in time during the initial oxygen tank #2 event, assuming the accident itself was not survivable. 40 scenarios all saved from the same trajectory starting...
 This soundpack is a collection of 217 WAV files that provide detailed audio in AMSO for the Apollo 11 mission from just prior to LOS before the Trans-Earth Injection (TEI) burn all the way to entry interface. The soundpack is meant to be used with my "Apollo 11 Entry Soundpack AMSO" add-on...
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