Join the conversation
Log in or create an account to leave a comment
Log In
If the landing bag had deployed,
and there was no way he could look out and see it, not even with the periscope
because it would be directly behind him, if it had deployed,
then the heat shield must be loose, and might come off during reentry. If the heat shield came off, he would
burn up inside the capsule like a steak. When the, uh, craft does begin
to encounter denser atmosphere that temperature we were talking about
will mount up to about 3,000 degrees. That will occur at approximately
25 miles altitude. And at that point, the spacecraft will be
moving at about 15,000 miles an hour. The craft will sustain temperature
of that amount for about two minutes, and the problem will be to have
it absorbed by the heat shield, which is made of a very special sort of
plastic material that will burn off
and there was no way he could look out and see it, not even with the periscope
because it would be directly behind him, if it had deployed,
then the heat shield must be loose, and might come off during reentry. If the heat shield came off, he would
burn up inside the capsule like a steak. When the, uh, craft does begin
to encounter denser atmosphere that temperature we were talking about
will mount up to about 3,000 degrees. That will occur at approximately
25 miles altitude. And at that point, the spacecraft will be
moving at about 15,000 miles an hour. The craft will sustain temperature
of that amount for about two minutes, and the problem will be to have
it absorbed by the heat shield, which is made of a very special sort of
plastic material that will burn off
Full Transcript
00:00:01.000 --> 00:00:03.628
If the landing bag had deployed,
and there was no way
00:00:03.712 --> 00:00:05.038
he could look out and see it,
00:00:05.672 --> 00:00:09.551
not even with the periscope
because it would be directly behind him,
00:00:09.759 --> 00:00:13.179
if it had deployed,
then the heat shield must be loose,
00:00:13.513 --> 00:00:15.557
and might come off during reentry.
00:00:16.891 --> 00:00:22.313
If the heat shield came off, he would
burn up inside the capsule like a steak.
00:00:24.983 --> 00:00:28.778
When the, uh, craft does begin
to encounter denser atmosphere
00:00:28.862 --> 00:00:33.533
that temperature we were talking about
will mount up to about 3,000 degrees.
00:00:33.783 --> 00:00:37.704
That will occur at approximately
25 miles altitude.
00:00:38.538 --> 00:00:43.046
And at that point, the spacecraft will be
moving at about 15,000 miles an hour.
00:00:43.877 --> 00:00:47.999
The craft will sustain temperature
of that amount for about two minutes,
00:00:47.505 --> 00:00:51.843
and the problem will be to have
it absorbed by the heat shield,
00:00:51.926 --> 00:00:56.598
which is made of a very special sort of
plastic material that will burn off.
Want This Clip in HD?
Upgrade for HD/4K downloads and unlimited access. Upgrade now →
Movie Summary
Follow the story of the first American astronauts in space in this National Geographic documentary.