AGI - Apollo 13 Revisited - 40th anniversary

[Larrythebassman]

Wow that software is OUT OF THIS WORLD

[TheJediCharles]

Very interesting, and the comprehensive power of the diagrams are perfect.

[oomblikkies]

A nice footnote to the Apollo 13 mission.

[tomczas7521]

But what about the Sun gravity?

[SuperTennis3]

@tomczas7521 the earth the moon and everything that has ever gone into orbit has been under the influence of the sun's gravity

[xxxrayxxx1]

many many thanks.

[cyberlight22]

that is cool thanks for posting

[tankai2008gmail]

GOOD

[sritger]

Cool...l learned something new today...thanks!

[ytwatchpagetester]

good

[ytwatchpagetester]

good

[ytwatchpagetester]

good

[Widder23D]

Had the first re-entry failed the issue becomes one of how long the crews' air and water would have lasted - probably not long enough, particulary as the richochet courses are conjectural.

[mostwanted115]

who read this on universetoday ?

[sneakerset]

I've read that the primary issue concerning the engineers( prior to the tank explosion) was the center engine cut-off due to pogo oscillation (which was countered safely before catastrophic failure). That event forced a longer burn on the remaining engines....

[Skobbles]

@sonofhermes5

You are a moron.

[sonofhermes5]

@Skobbles

What did NASA do with the videotape on the Apollo 11 moonwalk?

Oh, they erased it?

It doesn't take a genius to know that was the most historically important video tape in the history of NASA.

Well, how about the video of the Apollo 12 moonwalk?

Oh, the camera was aimed toward the sun and burned out?

It doesn't take a genius to know not to aim a TV camera at the sun.

You can call me a moron. Just don't call me a 'NASA Genius.'

[ldsgems]

Interesting. It brings up another question - what were the trajectories of the service module and lunar module after the Astronauts left them in the return capsule? Could they still be orbiting the earth or floating in space, or did then re-enter the Earth's atmosphere? If so, when? That would also be interesting to know.

[blackmh]

They reentered Earth's atmosphere and burned up. Check Wikipedia for Apollo 13, there's even a picture of said event.

[SZSearcher]

Wikipedia . . . now there's a reliable source of information.

[ugowar]

In this case, wikipedia *is* correct. The LM and SM were pretty much on identical trajectories to the CM and they all plunged into the Earth's atmosphere at about the same time the astronauts themselves reentered.

[ApolloWasReal]

@SZSearcher I've found Wikipedia to be remarkably reliable, but more importantly I can follow the citations to the original sources.

There's an amazing amount of Apollo-era technical documentation online at the NASA Technical Reports Server, ntrs nasa gov. There's a detailed report for each Apollo mission, plus a separate report on the performance of its launch vehicle.

[sneakerset]

@ldsgems The LM burnt-up over Fiji, and the remains went to the bottom of the Tongan Trench. The reason for this particular placement was the high re-entry velocity,and the need to dispose of the SNAP-27 RTG as safely as possible. U.S. DOE continues to monitor the area around the RTG. My source: Wiki (Apollo 13 RTG)

[godistheway123]

@ldsgems NASA has confirmed that the SM and the LM reentered the Earths atmosphere about a few days after the mission was over. The LM reentered around Japan and the SM reentered somewhere in the Pacific.

[SuperTennis3]

@ldsgems they would have both re-entered because they would have been blown off on a differend course in relation to the CM, but only by a few small miles or so. My point is those pieces would have still been on the free return trajerctory and therefore would have re-entered.