Launch News Orion EFT-1 Update thread

[Codz]

Think he'll want to stay around for another 10 years for that opportunity?

Maybe. More likely for an earlier flight like EM-2.

---------- Post added at 02:00 PM ---------- Previous post was at 01:39 PM ----------

Second stage reignition confirmed.

---------- Post added at 02:03 PM ---------- Previous post was at 02:00 PM ----------

Apoapsis over 1500 nautical miles.

---------- Post added at 02:05 PM ---------- Previous post was at 02:03 PM ----------

Over 2500 nautical miles.

---------- Post added at 02:05 PM ---------- Previous post was at 02:05 PM ----------

SECO 2 confirmed.

---------- Post added at 02:08 PM ---------- Previous post was at 02:05 PM ----------

Final apoapsis is over 3100 nautical miles.

 

[orb]

Final apoapsis is over 3100 nautical miles.

Initially, after SECO-2:

• ApA: 5809.7 km
• PeA: -37 km

A few moments (~5-10 minutes) before reaching apoapsis:

• ApA: 5789.1 km
• PeA: -34.5 km

 

[Codz]

Interesting concept photo of Orion/unknown ship combo in Jovian orbit.

 

[N_Molson]

Almost at apoapsis. Awesome views of the Earth. Everything is working as expected.

 

[Codz]

Some perspective.

 

[N_Molson]

Guidance has calculated that G-forces will peak at 8.2G during reentry.

 

[Urwumpe]

Guidance has calculated that G-forces will peak at 8.2G during reentry.

Thats higher than during Apollo - any reason why?

 

[MattBaker]

I think it's much steeper? The periapsis was somewhere below the ground while I remember AMSO will kill you if you do that.:lol:

 

[Codz]

Orion is past apoapsis. Peak was 3132 nautical miles.

 

[Urwumpe]

I think it's much steeper? The periapsis was somewhere below the ground while I remember AMSO will kill you if you do that.:lol:

Yes, but why did they choose such a reentry? is that for testing purposes?

 

[Codz]

Yes, but why did they choose such a reentry? is that for testing purposes?

Stress testing the heat shield and other return systems?

 

[N_Molson]

Yes, but why did they choose such a reentry? is that for testing purposes?

Very likely. Given the budget constraints nowadays, you want to get everything you can from a test flight using a Delta 4H.

PeA: -34.5 km

(courtesy from :ninja

 

[MattBaker]

Yes, but why did they choose such a reentry? is that for testing purposes?

They always talked about simulating a reentry from the Moon. And since they didn't go all the way to the Moon I guess they have to go steeper to approximate it. And then they probably add a bit more.

 

[Codz]

Orion has separated from the service module/second stage.

 

[N_Molson]

SM (Stage 2) separation confirmed.

 

[Codz]

59 minutes to splashdown.

 

[N_Molson]

Orientation manoeuvers of the CM are nominal.

 

[Codz]

Raise burn complete.

 

[N_Molson]

RCS test manoeuver completed.

 

[statickid]

being human rated, perhaps the capsule is designed for a much more furious reentry than a typical mission profile will require, in such a way that that during a normal mission, it will not be pushing any performance envelopes