Launch of Apollo 16 (NBC)

Are pressurized to ensure that as the fuel justly, they are forced down or to assure an even flow into the engine. People, tanks are now being pressurized. The S4B or third stage, but that oxygen tank just been pressurized, and the second stage liquid oxygen tank has been pressurized. As we move down through the count at the T-minus 17 second mark, we'll get a release of the guidance system in the instrument unit, also handled by the automatic sequencer. Will be the release of swing arms number one and number two. The ignition of the Saturn V five engines, the first stage five engines, will take place at 8.9 seconds in the countdown. At 8.9 seconds, there'll be the engine world, or the vehicle will then be held down until we build up to 7.7 million pounds of thrust. At the T-minus three minute mark, tape recorders on board the spacecraft were turned on. These recorders record both voice and data. Today's craft now two full internal cooling. The wind load has been shared with a ground cooling. T-minus 90 seconds and counting. He - 90 seconds and counting. At T-minus one minute 15 seconds, spacecraft batteries will be turned on for launch. These batteries will give an additional power source to the spacecraft as well as be acting as a backup for the fuel cells. The third stage liquid hydrogen tank now pressurized. All third stage tanks pressurized. Second stage tanks also pressurized. T-minus one minute. T-minus one minute and counting. Moving into the final minute of the count, we'll be standing by to whether you switch over to internal power. Switch over taking place at this time. Going on internal power. T-minus 45 seconds and counting. Guidance aligned just announced by John. That will be the last action taken by the crew aboard the spacecraft. You want us 35 and counting. I'm continuing to go well. T-minus 30. Jimenez 25, 24, 23, 22, 21, 20, 19, 18, 17. Guidance release. 15, 14, 13, 12, 11, 10, 9. We have ignition sequence start. The engines now building up to 7.7 million pounds of thrust. Bring back. We go where the dollars. Houston is now controlling all digital programs. Started 16:27 seconds. Thirty-six second row program completed. Profile still in progress. Forty seconds mark. 50 seconds. Kevin pressure relieving adjusting now from sea level to a space environment. Two nautical miles. Melt to do what now? 16 prior. Let's call up from Capcom. Gordon Fortune says Apollo 16 now capable of water landing. Mark 112 seconds coming up on period of maximum aerodynamic pressure on the vehicle. One minute 22 seconds. 6 nautical miles in altitude. Looking good. Mark 130 seconds. 8 nautical miles. Multitude. Marne. 1 minute 41 seconds. Pass through max Q. Still looking go through X Q and everything. Munstead 16:9. 12.5 nautical miles. Multitude. Young Duke Mattingly moving out to the outer creases the Earth's atmosphere. Step 5 or 1 Charlie. Roger or firefight Charlie. Mark 2 minutes 3 seconds of status check in Mission Control by flight director Gene Kranz. That go no-go for staging coming up once our engines shut down at the track bar here. Go for staging. Center engine shutdown on time. 2 minutes 28 seconds. 26 nautical miles in altitude to 32 nautical miles downrange. 2 minutes 35 seconds - it is 40 seconds coming up on stage anon. It Roger. Two minutes 53 seconds a normal staging. Young Duke Mattingly no writing on five. Good. Second stage engines going off on has to three minutes two seconds. The giant first stage falling away now. It's a day's work completed. Apollo 16 now 46 nautical miles in altitude, 80 nautical miles downrange. Coming up on skirts up and tower jettison. All right. Roger. We can't fire my skirts up your O2 now. Three minutes 28 seconds. The launch escape tower is ejected on time. It's a surveillance rule no longer required. Steering has converged. CFCS co. Mark 3 minutes 45 seconds. Apollo 16 62 nautical miles in altitude, a 135 nautical miles downrange. Apollo 16 33 feet shorter and 9,000 pounds later unencumbered now for it soon space. 16 here's to four minutes. Everything looks great down here.

second stage liquid oxygen tank has been pressurized as we move down through the count at the t-minus 17 second mark will get a release of the guidance system in the instrument unit also handled by the automatic sequencer will be the release of swingarms number

one and number two the ignition of the saturn v five engines the first stage five engines will take place at eight point nine seconds in the countdown at eight point nine seconds there'll be the engine world or the vehicle will then be

held down until we build up to seven point seven million pounds of thrust at the t-minus three minute mark tape reporters on board the spacecraft were turned on these recorders record both voice and data today's craft now two full internal

cooling the wind load has been shared with a ground cooling t-minus 90 seconds in counting he - 90 seconds and counting at t-minus one minute 15 seconds of spacecraft batteries will be turned on for launch these batteries will give an

additional power source to the spacecraft as well as be acting as a backup for the fuel cells the third stage lipid hydrogen tank now pressurized all third stage tanks pressurized second stage tanks also pressurized t-minus one minute t-minus

one minute and Counting moving into the final minute of the count we'll be standing by - whether you switch over to internal power switch over taking place at this time going on internal power t-minus 45 seconds and counting

guidance a line just announced by John John that will be the last action taken by the crew aboard the spacecraft you want us 35 and Counting I'm continuing to go well t-minus 30 Jimenez 25 24 23 22 21 20 19 18 17

guidance release 15 14 13 12 11 10 9 we have ignition sequence start the engines now building up to seven point seven million pounds of truck bring back we go where the dollars Houston is now controlling all digital

programs started 16:27 seconds thirty-six second row program completed profile still in progress forty seconds mark 50 seconds Kevin pressure relieving adjusting now from sea level to a space environment two nautical miles melt to do what now 16 prior let's call up from

Capcom Gordon fortune says Apollo 16 now capable of water landing mark 112 seconds coming up on period of maximum ur animate pressure on the vehicle one minute 22 seconds 6 nautical miles in altitude looking good mark 130 seconds 8 nautical miles

multitude Marne 1 minute 41 seconds pass through max Q still looking go through X Q and everything Munstead 16:9 12.5 nautical miles multitude young Duke Mattingly moving out to the outer creases the Earth's atmosphere step 5 or 1 Charlie Roger or firefight

charlie mark 2 minutes 3 seconds of status check in Mission Control by flight director Gene Kranz that go no-go for staging coming up once our engines shut down at the track bar here go for staging Center engine shutdown on time 2 minutes 28

seconds 26 nautical miles in altitude to 32 nautical miles downrange 2 minutes 35 seconds - it is 40 seconds coming up on stage anon it Roger two minutes 53 seconds a normal staging young Duke Mattingly no writing on five

good second stage engines going off on has to three minutes two seconds the giant first stage falling away now it's a day's work completed Apollo 16 now 46 nautical miles in altitude 80 nautical miles downrange coming up on skirts up and tower

jettison all right Roger we can't fire my skirts up your o2 now three minutes 28 seconds the launch escape tower is ejected on time it's a surveillance rule no longer required steering has converged cfcs co mark 3 minutes 45

seconds Apollo 16 62 nautical miles in altitude a 135 nautical miles downrange Apollo 16 33 feet shorter and 9,000 pounds later unencumbered now for it soon space 16 here's to four minutes everything looks great down here