Artwork for NASA-UAP-D028, Apollo 17 Crew Medical Debriefing, 1972

NASA-UAP-D028, Apollo 17 Crew Medical Debriefing, 1972

Official released audio

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GovernmentDec 21, 1972Analysis complete

NASA-UAP-D028 — Apollo 17 Crew Medical Debriefing, 1972

The Apollo 17 crew reported light flashes during their mission, attributed to cosmic rays affecting the retina, as discussed in their 1972 medical debriefing. This material highlights the biological impact of cosmic rays on astronauts, contributing to understanding space travel's effects on human physiology, particularly during the Apollo missions.

File
Audio · Release 04
Date
Dec 21, 1972
Location
Texas
Agency
NASA

Probed Assessment

The Apollo 17 crew reported light flashes during their mission, attributed to cosmic rays affecting the retina, as discussed in their 1972 medical debriefing.

Key takeaways

  • Two Apollo 17 astronauts observed light flashes, a phenomenon noted during their post-mission medical debriefing.
  • The light flashes are biologically linked to cosmic rays interacting with the astronauts' retinas.
  • The debriefing provides direct astronaut testimony on the physiological effects of space travel.

Why it matters

This material highlights the biological impact of cosmic rays on astronauts, contributing to understanding space travel's effects on human physiology, particularly during the Apollo missions.

Corroboration

The claims are based on the Apollo 17 crew's medical debriefing, a primary source document, but lack additional independent corroboration from other missions or studies.

Open questions

  • How frequently did other Apollo missions report similar light flash phenomena?
  • What are the long-term effects of cosmic ray exposure on astronauts' vision?
  • Are there modern studies that replicate or expand upon these findings?
  • What measures, if any, have been implemented to mitigate this effect in current space missions?
  • Could this phenomenon affect future long-duration space travel, such as missions to Mars?

Probed separates this editorial assessment from the source claims below. It summarizes what the released artifact supports; it is not independent verification.

Official Description from War.gov

This file contains segment 1 of 2 of the Apollo 17 post-mission medical debriefing at the Manned Spacecraft Center (now Johnson Space Center), Houston, Texas. In the recording, crew members discuss the “light flash phenomena,” a then novel, now well-documented biological effect where high-energy cosmic rays pass through the eye and strike the retina, causing the perception of light streaks or flashes. Two of the three crew members reported observing these flashes at various points during the mission, including in lunar orbit and while on the lunar surface. The debriefing continues in the next file (NASA-UAP-D029).

Preserved verbatim as source metadata. This wording is separate from Probed’s file-specific description and assessment.

File Context

Related entities

6
Research Map relationships require row-level claim or timeline references.

Tracker findings

2

Apollo 17 crew reported no flashes during one blindfolded hour

The medical debriefing says all three crew members were blindfolded for an hour during the return trip and did not see a light flash in that interval.

Light flashes resumed after the no-flash interval

The same Apollo 17 debriefing records that the crew member saw the flashes again later that evening, bounding the earlier one-hour absence rather than treating it as permanent.

Release provenance

Release
Release 04
Official ID
release-04-file-039-nasa-uap-d028-apollo-17-crew-medical-debriefing-1972
Cleared
Jul 10, 2026
Official release source

Related coverage

7

Sighting Context

Stored occurrence and enrichment data for this released artifact. Missing or regional data stays explicit rather than being inferred.

Shape model

Shape not classified

No grounded form data

Observation profile

Recorded occurrence details

Occurrence
Texas · Dec 21, 1972
Location
Texas
Classification
Not classified

Environmental, lunar, orbital, satellite, airport, and nearby-infrastructure context loads when this section approaches the viewport.

Referenced Timeline

  1. Apollo 17 Crew Medical Debriefing

    The crew discussed the light flash phenomena during their post-mission medical debriefing.

Source Claims

Claims are attributed to the released source and remain distinct from Probed’s assessment and tracker findings.

Source reportedObserved

Two of the three Apollo 17 crew members reported observing light flashes during the mission.

Two of the three crew members reported observing these flashes at various points during the mission, including in lunar orbit and while on the lunar surface.

Source reportedObserved

The light flash phenomena is a biological effect caused by high-energy cosmic rays passing through the eye and striking the retina.

In the recording, crew members discuss the “light flash phenomena,” a then novel, now well-documented biological effect where high-energy cosmic rays pass through the eye and strike the retina, causing the perception of light streaks or flashes.

Source Material & Evidence

audio

Apollo 17 Crew Medical Debriefing Audio

NASA-UAP-D028

Transcript

00:02

We're picking up at 12-0 liftoff

00:04

rendezvous and dock . And again , we're

00:07

going to , where things went nominal ,

00:09

as per the checklist , uh , we're going

00:12

to , uh , Get the lunar surface

00:14

checklist here . Yes . OK , we're going

00:17

to say so . Let them power up . And

00:20

launch prep , uh , went well .

00:26

We , uh ,

00:29

Did not do the P22 .

00:34

Uh , And everything else just went as

00:37

advertised on a limb . She came up and

00:39

powered up , uh , beautifully .

00:42

Anything in there that's worth going .

00:47

OK , the , uh , liftoff was , uh , is ,

00:51

again , uh , went , Went to ,

00:54

Normal . We got all the , obviously all

00:58

our pyros , and , uh , we lost no

01:00

changeover Parker valves or anything .

01:03

Uh , the only thing that I would like

01:06

to mention , uh , let the LNP pick it

01:08

up here , is that , uh , very soon

01:11

after liftoff , uh , we had , uh ,

01:14

apparent loss of calm , a lot of noise

01:16

in the SPN . Uh , it turned out that we

01:19

were down lucky . Uh , but , uh ,

01:23

there was something , uh , wrong with

01:25

the uplink . So , uh , Uh , the

01:29

CDR watched the , uh , most of the

01:31

guidance and , uh , we call out in a

01:33

blind , uh , altitudes and goes and

01:36

what have you as we pitched over and ,

01:38

uh , pressed on up , but for about the

01:40

1st 2 or 3 minutes , I think the , uh ,

01:42

lunar module pilot had to concern

01:44

himself with trying to get combat .

01:47

Yeah , and again it was another

01:49

apparently I got her , or uh gallstone .

01:53

Dropped the uplink and then when they

01:55

were getting it back , I was switching

01:57

on these and for a while there it was

01:59

just completely out of phase . And , uh ,

02:02

But they were , apparently had a

02:04

continuous downwind . It was a very

02:06

inopportune time , I might say , to ,

02:09

because it happened just right after

02:11

ignition . I think that's something

02:13

though that the , uh , Encodes are

02:15

going to be able to clarify because we ,

02:17

we certainly can't give you the details .

02:20

It's just there was essentially no comm

02:22

on all the antennas . We , we got into

02:24

a , uh , they , they briefed us on a

02:27

trajectory . We , uh , we flew into a

02:29

trajectory that , uh , that appeared to

02:32

be nominal . The ag showed a slide out

02:34

of plane , I believe , and , uh , as a

02:36

result , our tweak at , uh , 9 ft per

02:39

second . It was -4 , -9 , and plus . We

02:42

burned out X , Z , Y in that order ,

02:45

and , uh , it looked like the eggs out

02:47

of plane , uh , indication was good .

02:50

About 7 ft per second , a little over 7

02:52

ft . Uh , and it looked like we might

02:55

have had a somewhat of a G sensitive ,

02:57

uh , drift in our , uh , NRY , uh ,

02:59

accelerometer and the pings , but , uh ,

03:02

the tweak , as it turned out , was an

03:04

excellent tweak . Uh , because our

03:06

rendezvous resulted in , uh , uh ,

03:11

In in just as nominal a rendezvous and

03:13

a nominal trajectory and profile as I

03:15

guess I've ever been involved with . Uh ,

03:19

The , uh , the drift in that

03:21

accelerometer did not bother us

03:23

anywhere else in the tracking or in the ,

03:25

uh , Uh , in a rendezvous at all .

03:28

Rendezvous , uh , navigation was , uh ,

03:30

followed a checklist . Uh ,

03:34

Uh , we got , uh , radar performed very

03:37

well . We had auto updates into the AGs .

03:41

Uh , the only thing I might mention

03:44

here is when it came to , uh , To

03:47

making a TPI burn ? We ,

03:51

uh , Uh , the residuals and the TPI

03:55

burn were greater than what I had

03:57

expected them , and we did not record

04:00

them because I wanted to get them , uh ,

04:03

I wanted to get them , uh , nulled out

04:05

just as soon as possible , but they

04:07

were , And I don't know the tents , but

04:10

they were -7 and x . Uh , and then they

04:13

were 4 and 4 , and I'm not sure whether

04:16

they were plus or minus in the Y and Z ,

04:18

but I , they were , they were , the

04:20

point I'm making is they were large ,

04:22

larger than I had expected . They were

04:24

-7 and a 4 point something and a 4 .

04:26

something . We , uh , reduced those to ,

04:30

uh , less than 2/10 of a foot per

04:32

second , and , uh , from there on

04:34

continued to plot right through the

04:36

midcourses , uh , right up the pike on

04:38

a nominal trajectory .

04:42

Uh Communications after that first ,

04:46

uh , lash up , you got any comment

04:48

about that ? Uh , the comment was good .

04:51

Uh , a couple of comments about the

04:53

eggs . After about 5 or 10 minutes , uh ,

04:56

or early in insertion , I always check

04:58

the , uh , accelerometers or the after

05:01

insertion . And they looked real good

05:04

except about 5 or 10 minutes later ,

05:06

and I can't remember exactly , I looked

05:09

and I had accumulated a 1 or 2 per foot ,

05:11

maybe 1.5 ft per second at X , so gene

05:14

went free and I , uh , did a gyrocal

05:16

and after that there was , uh , no

05:18

significant accumulation in the . And

05:21

that went very well . I did that

05:24

without talking to the ground , but I ,

05:26

I felt I had an understanding with him

05:28

that that was something that , uh , we

05:30

could do without . OK , the , uh , here ,

05:32

let me just also mention on the TPI

05:34

solutions , the ags had essentially a

05:37

within 2 or 3 ft per second a good TPI

05:40

solution after 6 marks . The insertion

05:44

solution . Was not very good .

05:49

It was off by , uh , a number of feet

05:52

per second and X . And even more and

05:55

see . so

06:01

This was your 1st 1 , 17 marks , and

06:03

this was your final . It didn't change

06:05

much at all , did it ? No . The pings

06:07

recycle and pings final were very close ,

06:10

within a couple feet per second . And X

06:12

right . Yeah . And a pings recycle , uh ,

06:14

had , I don't remember exactly the

06:16

cause for 15 marks . I think I , uh .

06:19

You had I had 1717 17 .

06:22

Uh , And there's more data in the data

06:25

card books about various egg at certain

06:28

times marks with the egg solutions .

06:32

OK , the midcourse solutions , uh ,

06:34

first mid course , uh , uh , agreed ,

06:37

effectively , uh , all systems except ,

06:40

uh , Uh , eggs out of plain was a

06:43

little bit high . And the decision was

06:46

made to burn the onboard pink solution

06:49

out of the lamb , which was -1.2 + 0.4

06:53

and + 0.3 . We continued to track .

06:57

Right up the pike , uh , mid course two

07:00

came up and , uh , we again compared

07:03

all the solutions , uh , the eggs out

07:06

of plane was , uh , still a little bit ,

07:08

uh , high and then , uh , actually the

07:11

opposite direction from the pings . Uh ,

07:15

we had a slight variation in the , uh ,

07:17

CSM solution in Z . I don't know why .

07:22

Uh , it came up with +5.4 ft per second

07:25

in Z , so we really didn't get a very

07:27

good correlation between the CSM and

07:30

the LEM on the , uh , second , Uh , mid

07:34

course , uh , but the pings was still

07:37

performing , the radar was still

07:38

performing , and , uh , based upon our ,

07:41

uh , trajectory plot and based upon ,

07:43

uh , our following the nominal , uh ,

07:46

inertial line of sight rates , we

07:48

decided to burn the , uh , Pings , on

07:52

boarding solution , uh , in the lab .

07:55

And it was -0.4 , 7 , and -1.6 ,

07:59

and from there on out , we just , uh ,

08:01

continued to follow the inertial line

08:03

of sight angles and , uh , uh , very

08:06

little tweaking , uh , In , uh ,

08:10

either in Y or Z and we just sort of

08:13

floated . Uh , right through the , uh ,

08:17

Breaking gates , uh , at 1 mile , I

08:20

think we put about , took about 6 or 7

08:22

ft per second off to hit 30 . We met

08:25

all the Gates , uh , Uh , as prescribed

08:28

and , uh , just , uh , came ,

08:33

Very moving very slowly into , uh ,

08:35

final station keeping , went into a ,

08:38

uh , A formation flight around the uh

08:42

CSM , uh , got a good inspection of the

08:45

spacecraft and the Symbay . The report

08:48

of which is in a transcript .

08:49

Everything looked good to us . Uh , we

08:53

eventually maneuvered , uh , the

08:55

command module maneuver to the docking

08:57

attitude . The 1 just took his position ,

08:59

his docking attitude , uh , did his

09:02

pitch and yaw maneuver , and , uh , or

09:04

gave the , uh , gave , uh , station

09:06

keeping control to the command module

09:08

to pitch and yaw maneuver and stood by

09:10

for . For docking . OK , uh , Commander

09:14

Marshal pilot proceeding along with the

09:16

docking . I think the , uh , one of the ,

09:20

More noticeable differences between ,

09:22

uh , this docking and the docking , uh ,

09:25

With the S4B is the fact that the SN

09:28

stage , uh , Dead bands a lot

09:31

more than the S4B did . Uh , S4B is

09:35

steady as a rock , but you could tell

09:37

the , uh , just watch the limb . Dead

09:40

band because it would change attitude

09:43

and then you'd try to follow it and

09:45

looking on the first attempt coming in

09:48

I must have had less than 0.1 of a foot

09:50

per second just barely closing on the

09:52

thing just taking it nice and easy ,

09:54

made contact and did not get

09:58

captured . OK , as soon as it didn't

10:01

get captured when it's obviously you're

10:03

closing too slow . I backed off , uh ,

10:06

oh , what , a couple of 3 ft , I guess ,

10:09

something like that , renewed the rates

10:11

and , uh , initiated the closing rate

10:14

and , uh , made , got captured . As

10:17

soon as we had to capture , both

10:18

vehicles went to CMC3 . And you look

10:22

around and , uh , uh , check the barber

10:24

poles and whatever and look back out ,

10:26

and here , uh , I had some rates in

10:30

the , uh , CSM and I'm sure now that

10:33

the , uh , the lam had rates also . You

10:35

must have had . Well , we , we did one

10:37

as soon as we , you went free . See ,

10:39

as soon as captured the lim went free .

10:41

Yeah . And then , uh , the , the CSM

10:43

trying to null the rates ended up

10:45

perturbating the limb and giving us

10:47

rates . Um-hum . So , uh , we finally

10:49

gave up on that , uh , Mode had the ,

10:53

uh , the lamb go to , uh , attitude .

10:57

And then once you go to the hole , then

10:59

the CSM can all the rates . And , uh ,

11:01

we've got it lined up . And , uh ,

11:04

attempted the hard docking , uh , no

11:06

problem . Probary tract , uh , came

11:09

back this time , uh , it didn't sound

11:11

like it was as much of a ripple fire .

11:13

It was more of a . And uh it was a

11:17

quicker . Docking . A heart , a quicker

11:20

heart doc than I was , uh , the

11:22

previous time . You got any more tape ?

11:26

OK , yeah . OK , I wanna say something

11:29

about visual sightings during a

11:30

rendezvous . Uh , I was able to from

11:34

the limb . I was able to see the

11:36

command module in , When it was

11:40

sunlit . At somewhere around 100 miles

11:43

and definitely defined that that was a

11:46

command module . Uh , I ,

11:50

after the command module went into the

11:52

darkness , I could not pick up his

11:54

tracking light . Until we were well

11:58

within about 40 miles , and I think

12:00

this transcript had got more an

12:01

accurate , uh , time , but could not

12:04

pick up the , Docking light , the

12:07

rendezvous light , uh , rather from the

12:10

command module two we were well within

12:12

40 miles and then just a very initially

12:14

very dim faint . Uh ,

12:18

Flash . I was able to verify on board

12:22

that the limb tracking light was

12:24

working and I finally figured out how

12:26

it was reflecting off the underside of

12:28

the EVA handrail on the left forward

12:31

side of the limb . So I could see the ,

12:37

Lam tracking light flashing

12:40

and also when there were , there were

12:42

some particles we took with us , uh ,

12:45

that stayed with the spacecraft and you

12:47

could see the sequential flash off of

12:50

those particles that was a result of

12:52

our , our tracking light .

12:59

OK , uh , this is the command module

13:01

pilot . I've already mentioned in

13:03

section 11.0 about the , uh ,

13:04

visibility of , uh , the lunar module

13:07

through the , uh , optics .

13:12

I got down here . Let's see . Anything

13:14

else to add about Photography and

13:16

television , and photography and the

13:18

limb , uh , we'll just have to wait and

13:19

footage . Uh , Fact is we put it on ,

13:20

see how it turned out . I took a lot of

13:23

uh , not only the ascent mag , but we

13:26

put it on the , uh , another mag . We

13:28

have part of the mag pill . So , and

13:30

that includes the Syey , uh , Right or

13:32

wrong , we did have a , uh , a Hasselbo

13:35

on board so we have a lot of hotbo

13:37

photography , the rendezvous and some

13:40

of the inner surface stuff in the

13:41

process of . OK . Post

13:45

docking , uh , like we're going to 13.0

13:48

lunar module jettison through TEI .

13:51

Post docking check and pressurization .

13:54

Well , first of all , I guess you said

13:56

you had every latch made this time ,

13:58

right ? Every latch worked done . All

14:00

wall docking latches worked , OK ? The ,

14:03

uh . So like , that sounds like it's

14:05

something to do with the mass of the

14:07

other vehicle involved here . The , uh ,

14:10

General comment I want to make about

14:12

the , the post oping operations is that

14:15

the , uh , Throughout the rendezvous ,

14:17

the , uh , The , uh , Both pilots in

14:21

the lim kept their helmets on for , uh ,

14:23

dust , keep the dust off primarily .

14:26

The commander took off his gloves ,

14:28

almost immediately after insertion and

14:30

flew the entire rendezvous that way .

14:32

You took yours off sometime later ,

14:34

didn't you ? I kept mine on , uh ,

14:37

After we've done a lot of transfer , I

14:39

can't remember because I kept your

14:41

gloves on too . You kept your gloves on .

14:44

Oh , I , oh , OK , after insertion I

14:46

did most of my , uh , pre-insertion

14:47

didn't want to take the time . I want

14:48

work with the gloves on because I

14:49

to get that initial ag solution and I

14:52

could , and I could get that . Fairly

14:54

rapidly with the gloves , and I didn't

14:56

take the gloves off until , uh , oh ,

14:58

maybe 10 or 15 minutes after insertion ,

15:00

but I kept the helmet on all the way

15:02

through most of the transfer just to

15:04

had the , uh , irritation , sinus

15:04

avoid breathing the dust because I've

15:06

irritation on the surface . And the

15:08

commander kept the helmet on , uh ,

15:10

throughout the rendezvous and , Uh ,

15:14

Docking , I took my gloves off after

15:17

insertion and left them off . Now ,

15:19

when we started , when we , we started

15:22

getting prepared , as soon as we were

15:25

hired dock , the commander . Took off

15:28

his helmet , And as I look back at that ,

15:31

because of the dust debris in the LMS

15:34

spacecraft . Uh , I'm sorry I did it .

15:38

Uh , I could have left the helmet on

15:40

and , uh , and I would have had a lot

15:42

less , uh , not troublesome , but it

15:45

was just , uh , eye and mouth type of

15:48

irritation . You knew you were in a

15:50

very heavily , uh , infiltrated

15:53

atmosphere on the limb . Uh , because

15:55

of the lunar dust , although it's , I

15:58

don't know how much lunar dust previous

16:00

flights had , but the , I think we

16:02

saved a great deal of grief by taping

16:04

up , by sweeping all the dust we could

16:06

find on the floor into the holes and

16:08

putting our tape covers over those

16:10

holes . I think that had to help a

16:11

lot of dust on the floor that , uh , we

16:12

great deal because there was an awful

16:14

didn't see . Uh ,

16:18

So I had the commander had his helmets

16:20

and gloves off off throughout the

16:22

entire , uh , transfer . Basically the

16:24

way we handled the transfer was the way

16:27

we had planned the , uh , I think the ,

16:29

uh , Le pilot did most of the

16:32

preparation of the gear in the uh . In

16:35

the , uh , limb and a , and a commander

16:38

stayed in a tunnel and , uh , Pass

16:40

things on and , uh , the , uh ,

16:42

inventory was going on on the command

16:45

module side and on the left side both .

16:47

We , uh , vacuumed each other's suits

16:50

the best we could and everything else

16:52

that got supposedly transferred

16:53

unbagged or uncovered . This is YMP and

16:57

in spite of the CMP's comments to the

16:59

contrary , I think we got things

17:01

remarkably clean , and it wasn't an

17:03

awful lot of dirt in it man like coming

17:05

back . Oh , that's , that's true . I ,

17:07

I didn't want to leave that impression .

17:10

OK , contrast , he may have thought it

17:12

was , but , but , uh , I was surprised

17:14

we were able to , uh , keep the . The

17:16

level of , uh , pardon the expression ,

17:18

contamination of the command module

17:20

down as well as that , that atmosphere

17:23

that the commander was referring to in

17:25

a limb after he took his helmet off , I

17:27

could go halfway through the tunnel and

17:29

stick my head up in the command module

17:31

and it was a totally refreshed ,

17:33

unpolluted atmosphere up there and it

17:35

never did get polluted . I think having

17:38

a vacuum cleaner running in the limb

17:40

had a lot to do with keeping the the

17:42

flow in the . And filling out the air .

17:46

Oh , did you ? Right . We never did

17:48

vacuum in the command module because

17:50

this wasn't necessary . It wasn't

17:52

necessary to vacuum in the command

17:54

module at all . And , uh , the suits

17:56

were noticeably cleaned by the vacuum

17:58

cleaner . Um-hum . You could tell you

17:59

although they were still , and every

18:00

were pulling stuff off of them ,

18:01

other subsequent time we handled them ,

18:04

we got our hands , but , uh , I think ,

18:06

uh , most of the tree dust was taken

18:08

care of . We , uh , uh , we effectively

18:11

stayed on a transfer list , uh , I say

18:13

effectively throughout that transfer ,

18:16

however , some things got transferred ,

18:18

uh , uh , out of order , uh , and got

18:20

temporarily stowed in the , uh ,

18:22

command module , but we effectively use

18:25

the , uh , transfer list as a , uh ,

18:27

not as a , a cookbook , Follow a recipe

18:30

type of thing , but as an inventory

18:32

list , and , uh , we inventoried it

18:34

several times from both ends and found

18:36

out that , uh , we were satisfied we

18:39

had everything transferred . And , uh ,

18:41

then press down with the lamp close out .

18:47

Lum close op went nominal . Uh , we got

18:49

back into the , uh , Into the limb or

18:53

into the command module and uh the

18:55

commander closed out the uh the the LMP

18:58

closed out the limb . Uh , and for

19:02

convenience , the commander , uh ,

19:04

effectively , uh , went back and closed

19:06

out the limb hatch , put in a command

19:08

module hatch , uh , because of the slow

19:12

tunnel vent , or the long duration of

19:14

tunnel vent , uh , the commander , uh ,

19:18

stayed in the tunnel , the LMP in the ,

19:21

his seat and the CMP in the left seat .

19:24

Uh , we suited up and got prepared for

19:26

our , uh , for our integrity check and

19:29

as soon as the , as soon as the lung

19:31

tunnel vent was complete and we were

19:33

satisfied with the integrity of the

19:35

hatch , we went into the , uh , uh , to

19:37

the , uh , suit integrity checks . Yeah ,

19:39

this is a CMP . Let me make another

19:41

comment on the tunnel vent time . I'll

19:44

bet it must take , uh , and , I'm not

19:47

sure if this is correct , but I bet at

19:49

least , uh , 3 or 4 times longer than

19:52

the simulator is for the tunnel vent ,

19:55

uh , move . And I think that's going to

19:57

be applicable to Skylab because of

19:59

their docking , uh , They're going to

20:01

have to vent before the end , doc .

20:03

Quite a , took quite a while . But

20:06

tunnel closeout was easy . We had no ,

20:08

uh , no , uh , rogue and no probe ,

20:10

which were stowed , uh , Uh , in the ,

20:13

uh , lamb for , uh , Lamjet .

20:19

Uh , going through the rest of these ,

20:21

uh , Mind triggers , uh , under lunar

20:25

myogiosis through TEI . We just

20:27

followed the checklist and it all

20:29

seemed to happen just as advertised .

20:32

Well , we got a little bit intrigued

20:34

with the , uh , The lun jettison , you

20:37

know , this time it was , it was great

20:39

and it just sailed out there nice and

20:41

pretty , and we got a lot of good

20:43

pictures of it , uh , where we should

20:45

have been maneuvering , and we ended up ,

20:47

uh , getting into P-41 after for the

20:49

set burn . Uh , a little bit of light .

20:52

But that's no problem either because we

20:54

just turn the residuals and people were

20:56

the one and and uh got a good supper .

20:58

I , I want to make a comment that I

21:00

think cleaning control , uh . In a

21:04

command module , uh . was excellent

21:09

considering all the dust and all the

21:11

dirt . Uh , that just seemed to adhere

21:14

to everything in the lamb . When we got

21:17

back in the command command module with

21:19

the exception of the suits . And with

21:21

the exception of the LNP and the CDR ,

21:25

Uh , Everything . Uh ,

21:28

was clean , uh , and that's for the

21:31

most part is because everything was

21:33

bagged before we brought it over ,

21:35

bagged and zipped , and we never did

21:37

open anything , uh , once we got it

21:39

zipped up , so the command module

21:41

stayed , and I think that Su fan filter

21:44

is probably going to be very , very

21:46

clean , stayed exceptionally clean

21:48

throughout the , uh , remainder of the

21:50

flight . Let me , uh , in the bagging ,

21:52

the decontamination bags I made a

21:54

special effort as for , uh . Request .

21:57

Pre-launched to uh pull those zippers

22:00

as tight as I could . And they should

22:02

be pretty tight so .

22:06

OK . Orbital

22:09

navigation , high gain one , why don't

22:11

you pick that up ? OK , I've already ,

22:14

uh , from except the TEI I have no , uh ,

22:17

no comments . I gain , that always

22:20

worked good . Omnis and S band were

22:22

good . Uh , photography , uh , When as

22:26

advertised , we have a lot of targets

22:28

of opportunity .

22:32

Uh , Syey operations , uh , have been

22:34

mentioned before . Let me just make one

22:37

gross comment about the way we handle

22:39

it as a three man crew at Syey

22:41

operations , which after . Did you get

22:43

that ? Did we ? Yeah . OK ,

22:47

it's covered . Uh it's covered . Oh ,

22:50

OK . I think I did say something , yeah

22:54

you did .

22:58

OK , the TEI updates . Normal .

23:05

Section of star checks were good for .

23:07

Got the commander's master alarm and

23:09

every one of them all through the

23:11

flight , which made me feel very good .

23:13

I made sure I got . I made , I made

23:14

Yeah , but you kept trying to get it .

23:16

sure I got it on those last few . I

23:18

wasn't going to change any mode of

23:20

operation .

23:24

I'll tell you that last one , Uh ,

23:28

where entry was the last one . I made

23:31

sure I got it on TEI . Just make you

23:34

guys feel at home . I figured you'd

23:36

think I didn't do it right if I didn't

23:38

get the master honor . The uh TEI at

23:41

halfG or whatever we were pulling there

23:43

uh was uh . Seemed like more than that .

23:47

Quite noticeable . Yeah , it sure did .

23:49

It seemed like it was really pushing

23:51

you back in the seat . Yeah . Ron and I

23:53

both , I think , started out holding

23:55

our heads up and eventually relaxing

23:57

back on the , on the couch . I guess we

24:00

must have had the spacecraft pretty

24:02

well stowed or tied down . Because ,

24:05

uh , as I briefed the CFP and LMP , and

24:09

as I recall , those kind of burns back

24:12

in Apollo 10 , lots of things start

24:16

moving through the spacecraft and find

24:18

their due , uh , on the , uh ,

24:22

On the after uh End of the spacecraft

24:26

because of the G load and much to my

24:29

surprise , uh , all we had was initial

24:31

thud as we moved away from the station

24:33

and we didn't have any gear coming from

24:36

anywhere flying through the spacecraft .

24:38

well . I , I got a , uh , caught a

24:38

So we must have cleaned it up pretty

24:40

white tagged wet wipe . A white tag

24:44

wet one . But other than , than maybe

24:47

one or two of those things , uh , and

24:49

looking back , uh , Uh , I would have

24:51

expected more gear to come . From

24:54

somewhere , but , uh , we prepared for

24:56

those burns pretty well . Well , that

24:58

reminds , brings up another point that

25:00

reminds me , though , is that there is

25:03

always water condensing on the ECU , uh ,

25:06

you know , the pipes and what have you

25:08

back in there when you get back to

25:10

clean the circuit return valve . And ,

25:12

uh , When we put our suits on for the

25:14

EVA the next day , your , your suits

25:17

were noticeably wet . Um-hum . And , uh ,

25:20

also when I pulled the PGA bag up , it

25:24

was damp down underneath the PGA bag .

25:27

So I think , uh , uh , as a nominal

25:30

procedure , we should have , uh ,

25:34

Either after the burn , probably before

25:36

the burn , make sure that we wiped out

25:38

the water in the LAB somehow to do that .

25:41

I wasn't really aware . Our suits were

25:43

damp when we put them out , but I was

25:44

I could not find any real water down in

25:45

not aware . I could look down there and

25:48

the , uh , Down there . Which is an ECS .

25:51

Yeah , an ECS , there's , there's

25:53

always water down there in ECS , and I

25:55

just assumed that's where all that came

25:57

all over . It , it's , it's , it's not

25:57

from , but , uh . It's funny , it was

25:59

a puddle of water . Like you say , it

26:01

was just damp . It was almost as if it

26:03

was condensing on all , all over the

26:03

was colder down in the LAB and water

26:05

city . It wasn't as if they were in a

26:07

puddle . Yeah . OK , I think that

26:09

covers , uh , right on through , uh ,

26:12

TEI . Let's see , uh , yeah , the one

26:14

thing I want to mention on TEI is that ,

26:16

uh , uh , again , the simulator is set

26:19

up such that , uh , in the rolled dead

26:21

band , it goes over to one side of the

26:23

rolled dead band and just kind of stays

26:26

there . And , uh , during the TEI burn ,

26:28

uh , it was bouncing back and forth

26:30

from one side of the , the dead band

26:32

turn over to the other side of the dead

26:34

band . And when it's bouncing back and

26:36

forth , the roll rate , Is up around ,

26:39

uh , Oh , Fortense , uh ,

26:43

4/10 of a degree per second , arching

26:45

back and forth across the road .

26:53

OK , 14.0 Trans-Eth Coast and the thing

26:56

that I just realized we've neglected to

26:59

say anywhere about systems , uh , I'd

27:01

like to mention chlorination at this

27:03

point in time . I think without fail ,

27:06

did you ever talk about it ? No , I I

27:08

think without fail , almost every

27:10

chlorination , Leaked .

27:15

Uh , sometimes larger quantities of

27:18

water , other times just small

27:20

quantities of water , and I'll tell you

27:22

where it leaks . Water or chlorine ?

27:24

Well , or both . It's a combination of

27:27

both . Chlorine and your chlorinating

27:29

and , uh , and buffer or water when you

27:31

withdrew the buffer sample . OK . But

27:33

where it leaked was , appeared to me to

27:35

leak within the ampule itself around

27:38

the bag because it was the chlorine ,

27:41

the cylindrical chlorine dispenser ,

27:45

That was continually Wet . It was not

27:48

the , uh , it was not where the , uh ,

27:50

dispenser fit into the , uh , needle or

27:53

where the , uh , uh , needle adapter

27:56

fit into the spacecraft . It was within

27:58

the barrel chlorine dispenser itself ,

28:01

and , uh , we continually ,

28:03

chlorination was , uh , was a , uh , a

28:06

case of , uh , Of always cleaning your

28:09

hands with chlorine because you always

28:11

had it available down there within that

28:14

dispenser and in some cases you had

28:16

larger quantities of water that had to

28:18

be wiped up with , uh , with a tissue .

28:20

That plagued us throughout the whole

28:23

mission . It turned out not to be a

28:25

serious problem because we learned how

28:27

to handle it , but , uh , that was one

28:29

system anomaly that never had really

28:31

been brought up . OK , look , let's see ,

28:34

uh , CMP , let me amplify that a little

28:36

bit .

28:40

In 2 cases . I'm

28:44

almost positive that when you , Put the

28:47

thing on in the bayonet fitting and

28:49

crank it on there . It did not puncture

28:52

the ampule itself . And the reason I

28:55

can , I believe that's correct is that ,

28:57

uh , When you start to , to crack the ,

29:00

uh , Outside of the . Cassette .

29:05

Down to to push the chlorine into the

29:07

into the water system , it was very

29:10

hard to turn . And if you , if you ,

29:15

Tried to force it , you could force it

29:18

on down there , and I'm sure that's a

29:20

good way to , to break , uh , an ampule

29:22

on the thing . And if you take it , uh ,

29:24

just , uh , in two cases , took the

29:26

bayonet fitting loose again and put it

29:29

back on there , and , and in both cases ,

29:33

Then you try to squeeze the uh chlorine

29:35

out of the ampula into the system and

29:37

it would turn easier but it's still

29:40

hard to to awfully hard to crank that

29:42

awful hard to crank that thing down .

29:46

But , uh , we did not , you know , we

29:48

got the chlorination done . We didn't

29:50

miss any injections of chlorine , and

29:52

we didn't miss , uh , We didn't miss

29:55

any of the , uh , buffer samples , uh ,

29:59

So I guess we got the job done . It was

30:01

just a little bit messy . And chlorine

30:03

was evident and because uh the CDR

30:06

eventually peeled all the outer skin

30:08

off his right hand and I'm convinced it

30:10

was due to the chlorine and had nothing

30:13

to do with the EVA . Boy , you lost a

30:16

little , a little flesh , a little skin

30:19

when you did . Yeah .

30:23

Transverse coast systems navigation ,

30:25

let's press on and see what we can say

30:27

about that . Don't have lunch today .

30:31

OK , uh , well , let me see how much

30:33

transverse coast we're gonna do . Let's

30:35

get , yeah , let's go through up to the

30:38

CSM EBA . OK , transverse coat , the

30:41

first thing I want to mention is

30:42

passive thermal control . Was Uh , at

30:46

what I would call unusual attitudes

30:48

because of the UVN IR requirements .

30:50

Now these unusual attitudes did two

30:52

things . They , uh , they put us , uh ,

30:55

they required us to remaneuver the

30:57

spacecraft several times and exit ,

30:59

enter and exit PTC several , several

31:02

times , which in itself was not a

31:04

problem . It was just , uh , additional ,

31:06

uh , coordination . Uh , coincidentally ,

31:10

most of these , uh , particular PTC

31:12

attitudes were within . 30 , certainly

31:16

45 degrees of gimbalak most of the time .

31:19

So we're looking at the red apple a

31:21

good portion of the trip home . Uh ,

31:24

but they also , uh , some of those

31:25

attitudes where you actually were not

31:28

in , were in attitudes and or PTC at

31:30

these relatively unusual positions . Uh ,

31:34

Change the , uh , The , the , uh ,

31:37

equilibrium heat load on a spacecraft .

31:39

You could see it in , uh , in RCS , uh ,

31:43

quad temperatures were all right , but

31:45

you could see it in helium package

31:47

temperatures , and most notably , you

31:49

could see it on the change in , uh ,

31:52

condensation from the tunnel hatch to

31:54

the , uh , forward hatch . The tunnel

31:56

hatch eventually for most of the way

31:58

home ended up to be very dry . Uh , and

32:01

the , uh , about the second day out on

32:03

the way home , the , uh , the , uh , or

32:06

the , uh , Main hatch Center

32:09

hatch . Uh , got .

32:13

Soaking wet to the point that , uh , I

32:15

even took a dry rag and wiped off some

32:18

of the uh latch components and some of

32:20

the , uh , gearbox components

32:23

externally , not that it did any good ,

32:25

but there was just that much water on

32:27

it . I , I think this is all due to the ,

32:29

uh , PTC attitudes required for the

32:31

Simba experiments on the way home .

32:35

Oh , it was colder in the spacecraft

32:37

too . Oh yes , it was colder in the

32:39

spacecraft . Not as cold as the

32:41

commander thought it was , but it was .

32:44

Cold enough to warm up on the

32:46

commander's orders .

32:55

And I just mentioned we warmed it up

32:58

with the ground suggestion of an extra

33:00

inverter and , uh , going to manual and

33:02

the pin . I think we discussed that

33:04

yesterday . We're on all your , uh ,

33:06

all your , uh , your ResMed changes ,

33:08

uh , your , uh , torquing , platform

33:11

torquing , all those , uh ,

33:15

Went very well , I thought . It went

33:17

great , uh , really well . The , uh ,

33:22

Uh , and , all the way back home , uh ,

33:24

it was just changing attitudes ,

33:26

changing attitudes , changing attitudes

33:28

with the exception of the EVA day ,

33:30

which , uh , we'll cover here . Shortly .

33:38

CSM EVA .

33:42

OK , on EVA prep . I think the only

33:46

anomaly we came across was the uh CMP's

33:48

uh . Well , let's see , you're on EBA

33:52

prep , but I really didn't have any .

33:54

We didn't know anything at that point .

33:57

On the , I was going to say on the

33:59

CMP's , uh , compare . But the

34:03

EVA prep went , uh , right down the

34:05

line . Essentially , it was all , uh ,

34:08

well laid out within the , uh ,

34:10

Experiments checklist and we checked

34:12

things off as we went and stayed pretty

34:14

much on the timeline . We started about

34:17

a half hour in and stayed a half hour

34:19

early . We , uh , we , we started out ,

34:21

we were a half hour early throughout

34:23

the whole thing and we lost , That half

34:26

hour and open the hatch just about it .

34:29

You turn the TV on exactly on time ,

34:31

and I can't remember a small little .

34:33

It was the carrier . Comp carrier

34:35

change . And we lost that half hour

34:37

during a comp carrier change on a tone .

34:40

Uh , Ron , I'd like to add that , uh ,

34:44

Uh , post EVA ,

34:48

That , uh , I think one thing that

34:50

helped us . Uh ,

34:53

Immensely on what ended up to be , I

34:55

think , a very fine , uh , Entry

34:58

storage was that we sort of , uh ,

35:01

backed off after the EVA and , uh , And ,

35:05

uh , Took a long , good long

35:09

list at the long range stowage , as

35:11

well as the post EVA stowage and really

35:13

effectively started housekeeping ,

35:15

cleaning up the cabin , and effectively

35:17

stowing some of the articles that were

35:20

not going to be used any further in the

35:22

mission for entry . At that time . At

35:24

that point in time , yes . So our entry

35:27

storage really started with the post

35:29

EVA time frame , period , and I think

35:31

that really helped us out in the long

35:33

run . OK , I think , uh , we should

35:36

mention how we got out of the suits and

35:39

I think to me that was a pretty

35:40

important , uh , way to get things done .

35:43

And ,

35:47

The only change . The only change to

35:49

the , to the , uh , Prep and or post

35:52

was the order in which we doffed and

35:55

donned suits because it was very

35:57

evident that there were certain

35:58

convenient ways because of the way the

36:01

student suits were stowed and uh the

36:03

way uh people fit into the , uh ,

36:06

checklist that we , uh , when we don

36:08

the suits , the commander . You got

36:11

down , you can't , you got in 1st . 1st ,

36:13

and I did and then run . Then the LNP

36:15

and the , and the CMP got down last ,

36:17

and it worked out very fine that way ,

36:19

plus the CMP had less work to do in his

36:22

suit , which also aided him in the long

36:24

run . When we doffed , I went first .

36:27

The LNP . Yeah , because I was stuffing

36:30

first , OK , then you and then the CDR

36:34

and then the CMP , and that wasn't

36:36

exactly what it was called for , but

36:37

the way it worked out the best . And we

36:38

that's the way it worked out . That's

36:40

stowed our suits in the L shaped bag

36:42

prior to . Putting the center ,

36:45

Couch back in , which was , uh ,

36:48

another good decision , I believe , uh ,

36:52

In helping us get the suit stove back

36:54

in that L shape bag .

36:59

Go ahead . OK , let's go on down to the

37:01

cabin deep breaths .

37:06

Uh , no problems . Normal , uh , deep

37:09

breaths . Hatch opening ? Uh ,

37:13

Even though the hatch was completely ,

37:16

uh , or the cabin was completely

37:17

depressed , I think we're reading zero

37:20

pressure on the thing , as soon as I

37:22

opened the hatch , There was enough

37:24

residual pressure or something inside

37:26

the spacecraft that it actually tended

37:28

to pull the the hatch out of my out of

37:30

my hand is bleeding into the cabin all

37:32

the time , so you never truly get zero .

37:34

That's right . You never truly get zero

37:37

on the thing , but the , the . Dump

37:39

valve was still open . And , uh , if I

37:41

had not been hanging on to the hatch ,

37:43

I would have blown it all the way over .

37:46

Well , Ron , to give you an idea on ,

37:48

that's , that's exact , that's not

37:50

had on the lunar surface . We

37:50

unexpected because it's exactly what we

37:52

completely , completely dump the lamp ,

37:55

and I'd still have to break that hatch

37:57

loose and hold it open about 6 or 8

38:00

inches until things just vented , and

38:02

then I could let go of the hatch and

38:04

open it all the way . If I didn't , it

38:06

would slam back closed . So we had an

38:08

inward . Oh , yeah . Different types of .

38:10

So it was basically the same thing .

38:12

You've got to open it up and really let

38:15

things get down to zero . OK , well ,

38:17

when I opened the hatch then , All of

38:19

the , uh , Excuse me . All

38:23

the little ice crystals and everything

38:25

started flowing out . Uh , a pen went

38:28

floating by . Something else went

38:31

floating by . I wasn't quite sure what

38:33

it was .

38:38

But , uh , there's all kinds of little

38:40

particles and pieces start , uh ,

38:42

coming out through the hatch . But I

38:44

sure didn't see , I looked specifically

38:46

for the scissors . I , I , uh , I

38:49

didn't see any scissors go out that

38:51

hatch . I hate to say it . None of them

38:53

went by my watch . I , I didn't none of

38:55

them went by me , Ron . I'd like to say

38:57

that they went out the , uh , the hatch ,

39:00

but I sure didn't see them go . Sure

39:02

you didn't say go by ? I didn't see , I

39:04

started to go by me and they put , put

39:04

caught the one thing that went ,

39:06

it in your pocket . You got to , OK ,

39:09

push straight . OK , the , uh ,

39:13

Once the , uh , all the particles and ,

39:15

and , uh , junk was out of the way ,

39:17

then you just push the hatch hatch open .

39:20

We had disconnected the , uh , uh ,

39:22

counterbalance , uh , uh , With the

39:25

beat to tool be there so that we locked

39:28

the hatch in the open position , so I

39:30

just shoved it open and it went beyond

39:32

the center position and locked in the

39:34

open position with no problem . Egress ,

39:37

uh , I had a tendency , I guess , uh ,

39:39

just like , uh , any other thing , it

39:42

seems like you want to float up , and I

39:44

had a tendency to float up against the ,

39:46

uh , MDC and had to consciously , Duck

39:49

and uh get as close my face as close as

39:52

I could to the bottom of the hat in

39:54

order to uh get past the uh . Get the

39:57

OPS past the MDC and get on out . TV

40:00

and deck insulation , uh , work fine .

40:03

I can hang on with the , uh , right

40:05

hand on the , uh , hatch , uh , the

40:08

great big , uh , D handle on the hatch .

40:11

And , uh , with the TV pole in my left

40:13

hand , and it worked out real fine to

40:15

just stick it in there and then line it

40:17

up with the mark and uh make sure it

40:20

was uh . Uh , locked in or clamped in .

40:24

And then , uh , climbed on up the pole

40:26

to , uh , turn the TV on or turn the ,

40:29

uh , dock on . And it was ,

40:33

you couldn't see the light . I couldn't

40:35

see the light on the thing , but you

40:37

could feel the camera running once you

40:39

turn it on . You could just touch it

40:41

vibrating a little bit .

40:41

and you could feel it , feel it

40:45

The , uh , lunar sound or cassette uh

40:48

retrieval , um . I think , uh , they

40:52

should be on the on board , uh , or on

40:54

the air-ground tapes . As I was

40:58

describing , uh , most everything that

41:00

was going on , there was no problem .

41:05

The pan camera cassettes were next . No

41:08

problem on the , uh , pan camera

41:09

cassettes and , and the pan camera ,

41:11

it's obviously a bigger mass , and it's ,

41:15

it's , uh , quite apparent when you try

41:17

to maneuver , move , move that big mass

41:20

around that it is heavier and it weighs

41:22

more than the , the other things . It's

41:24

easy to move , but it just takes a

41:26

little more effort to get it started

41:28

and you know that if you ever get it

41:29

to keep on going , you have to stop it .

41:30

started in one direction , it's going

41:32

So I just , uh , moved everything real

41:34

slow , tried to keep it under control .

41:38

Mapping camera cassette . Had the same ,

41:41

uh , problem I had in the , uh , In the

41:43

same by , uh , C 2 S2 , getting the ,

41:46

uh , The ,

41:50

uh , Thermal cover off . It's stuck

41:54

underneath the mapping camera laser

41:56

altimeter . Uh , door .

42:01

But , uh , there was no real problem ,

42:03

you know , I had the feet and the shoes

42:05

finally came off .

42:05

just give it a big jerk and then it

42:09

Symba inspection , uh , that's all

42:11

covered in the . On board the , I

42:15

mean the air to ground tapes . TV and

42:18

dock removal , uh , again , was real

42:20

simple . You just had to squeeze the ,

42:22

uh , the lever and TV came out and it

42:25

was easy to , uh , hang on with one

42:27

hand and maneuver the , uh ,

42:30

uh , TV around and , uh , point it

42:33

toward the , the moon because I didn't

42:36

have to worry about shining it into the

42:38

sun . When I tried to again hang on

42:40

with one hand and , and point the TV

42:42

around toward the Earth . It was the

42:45

earth was , well , maybe 10 or 15

42:47

degrees , probably 15 degrees from the

42:49

sun . And I tried to be a little more

42:51

accurate on the thing and when I did

42:53

that , then I lost , Kind of

42:56

effectively really lost control of the ,

42:59

Uh , my body position because I was

Research Map

6 entities · 2 grounded links

Lines appear only when two entities share a row-level source claim or dated timeline event. Unconnected nodes remain visible without implying a relationship.

UAP/Disclosure Graph
6 nodes2 links