During spacecraft atmospheric entry, multiple critical parameters must be precisely managed simultaneously: velocity must be reduced below a specific threshold (2.6 km/s) to prevent skipping off the atmosphere, while entry angle must be steep enough to generate sufficient drag for deceleration; heat shield temperatures must be monitored closely as they approach material limits (3300+ Kelvin), and structural stress must remain within safe limits to prevent catastrophic failure.
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深掘り
For All Mankind — Landing on Titan | Season 5 Scene | Apple TV追加:
I hate that.
Heat shield leading edge temp now 2800 kelvin.
Remember, Baldwin, that shield starts to melt at 33.
We still gotta get our velocity below 2.6 kilometers per second or we'll skip.
Decel now 21m/s2.
Kelly?
Kelly, you got this or not?
I don't think you need me answering pointless questions right now.
We're coming in too shallow.
Hang on.
I'm gonna bring us in steeper.
The drag should slow us down more.
Okay.
Okay, just stay cool.
It's just like night landings back on the Connie.
Mars control, velocity's coming down, but we're still 7km/s over target.
Altitude 290 kilometers.
DAP now running P320.
ADI on inertial.
We need to broadcast this to the base.
You really want everyone to hear this?
Why not?
Altitude 270. Speed 9.2.
Because it might not have a happy ending.
But it might.
This is a Mars mission.
It was built here.
It was planned here.
It was crewed here.
They deserve to know what's happening.
Now at 255 kilometers.
Speed at nine klick-secs.
Yeah.
Engaging aerosurface control.
Starter fuel tanks pressurized.
Cross-feed switches closed.
I'm seeing more ionization.
Expect LOS soon.
Decel now 31m/s2.
Heat shield's at 3500 kelvin.
Okay, let's switch over flight controls.
Control switch over in three, two, one.
Hull temperature is still rising.
Aerosurface hydraulics pressurized.
Holding up at G 191.7.
Speed 8.5.
Really hard to hold her.
Hydraulic pressure decreasing.
Spar cap 131 at 92%.
Ground radar active.
OAT 94 Kelvin.
Keep your eyes on the redline.
You're pushing it too far!
Redline exceeded.
Heat shields are starting to fail!
Structural tension 40% above limit.
Leading edge temp still climbing… Heat shields exceeding the limit.
Hydraulic temp reading is— LOS. Sojourner blackout.
No signal on X-band.
Scanning.
Switching HG-3 to search mode.
Have we gotten any seeking data?
Negative.
Still no signal.
There.
That frequency.
Sojour to Happy Valley… We have safely entered Titan's atmosphere.
Landing target acquired.
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