After a shaky but successful S-IVB burn Apollo 10 was on the way to the Moon. Now the first order of business was for John Young to move to the command module pilot seat.
At first stage cutoff the astronauts expected to encounter a single pulse of negative G and the crew would be thrown forward in their straps before the Second stage ignited and recommenced the acceleration. However, they actually encountered a form of pogo which continued for 4 cycles, during which they were “slammed forward, back, forward, back, forward, back, and forward, back. At this point the instrument panel was so blurred the astronauts could not read it.
On April 1, 1959, Robert Gilruth, the head of the Space Task Group, Charles Donlan, Warren North, and Stanley White selected the first American astronauts. The “Mercury Seven” were Scott Carpenter, L. Gordon Cooper, Jr., John H. Glenn, Jr., Virgil I. “Gus” Grissom, Walter M. Schirra, Jr., Alan B. Shepard, Jr., and Donald K. “Deke” Slayton.
On May 18th 1969, a king, some congressmen, other distinguished guests, and a hundred thousand other watchers waited at scattered vantage points around the Cape area. At 49 minutes past noon, Rocco Petrone’s launch team sent Apollo 10 on its way to the United States’s second manned rendezvous with the moon.
Mercury Control was still undecided on the course of action to take with the heat shield problem. Some controllers thought the retrorocket pack should be jettisoned after retrofire, while other controllers thought the retro pack should be retained, as added assurance that the heat shield would stay in place…
“I am in a big mass of some very small particles, they’re brilliantly lit up like they’re luminescent. I never saw anything like it! They round a little: they’re coming by the capsule and they look like little stars. A whole shower of them coming by. They swirl around the capsule and go in front of the window and they’re all brilliantly lighted.” John Glenn – Friendship 7
With the passing of John Glenn last week, I thought it would be appropriate to pause my coverage of Apollo 10 for a week and create an episode that celebrates the life of the American Icon, John Glenn. I covered John Glenn’s Mercury flight in episodes 30-31. I am going to re-release those episodes over the next 2 days. So I won’t spend a lot of time on his Mercury flight in this episode, that will be covered tomorrow.
John Young enjoyed the longest career of any astronaut thus far. Over the course of 42 years of active NASA service he made six space flights and is the only person to have piloted, and been commander of, four different classes of spacecraft: Gemini, the Apollo Command/Service Module, the Apollo Lunar Module, and the Space Shuttle.