Authors: David Hitt,Heather R. Smith
Tags: #History
15.
The launch of
STS
-1 on 12 April 1981. Courtesy
NASA
.
Crippen had trained with Young for three years, during which time the Gemini and Apollo astronaut imparted to Crippen as best he could what the launch would be like. “He told me about riding on the Gemini and riding on the [Apollo] command module—which he’d done two of each of those—and gave me some sense of what ascent was going to be like, what main engine cutoff was going to be like,” Crippen recalled.
But the shuttle is different than those vehicles. I know when the main engines lit off, it was obvious that they had in the cockpit, not only from the instruments, but you could hear and essentially feel the vehicle start to shake a little bit. When the
solids light, there was no doubt we were headed someplace; we were just hoping it was in the right direction. It’s a nice kick in the pants; not violent. The thing that I have likened it to, being a naval aviator, is it’s similar to a catapult shot coming off an aircraft carrier. You really get up and scoot, coming off the pad.
As the vehicle accelerated, the two-man crew felt vibration in the cockpit. “I’ve likened it to driving my pickup down an old country washboard road,” explained Crippen.
It was that kind of shaking, but nothing too dramatic, and it . . . didn’t feel as significant as what I’d heard John talk about on the Saturn V. When we got to two minutes into flight, when the
SRB
s came off, that was enlightening, . . . actually you could see the fire [from the separation motors] come over the forward windows. I didn’t know that I was going to see that, but it was there, and it actually put a thin coat across the windows that sort of obscured the view a little bit, but not bad. But the main thing, when they came off, it had been noisy. We had been experiencing three gs, or three times the weight of gravity, and all of a sudden it was almost like there was no acceleration, and it got very quiet. . . . I thought for sure all the engines had quit. Rapidly checked my instruments, and they said no, we were still going. It was a big, dramatic thing, for me, at least. . . . You’re up above most of the atmosphere, and it was just a very dramatic thing for me. It will always stick out [in my memory].
The engines throttled, like they were supposed to, and then, at eight and a half minutes after launch, it was time for
MECO
, or main engine cutoff. Crippen described the first launch of the nation’s new Space Transportation System as quite a ride. “Eight and a half minutes from sitting on the pad to going 17,500 miles an hour is a ride like no other. It was a great experience.”
Many astronauts over the years have commented just how much an actual shuttle launch is like the countless simulations they go through to prepare for the real thing. They have Young and Crippen to thank, in part, for the verisimilitude of the sims. Before they flew, there had been no “real thing” version on which to base the training, and when they returned, they brought back new insight to add to the fairly realistic “best-guess” version they had trained on. “I [went] back to the simulations,” Crippen said.
We did change the motion-based, . . . to make it seem like a little bit more of a kick when you lifted off. We did make the separation boosters coming over the
windscreen; we put that in the visual so that was there. We changed the shaking on that first stage somewhat so that it was at least more true to what the real flight was like. . . . After we got the main engine cutoff and the reaction control jets started firing, we changed that noise to make sure it got everybody’s attention so that they wouldn’t be surprised by that.
With the main engine cutoff,
Columbia
had made it successfully into orbit. The duo was strapped so tightly into their seats they didn’t feel the effects of microgravity right away. But then the checklists started to float around, and even though the ground crews had worked very hard to deliver a pristinely clean cockpit, small debris started to float around too.
Now the next phase of the mission began. On future missions, nominal operations of the spacecraft would be almost taken for granted during the orbital phase of the mission. On
STS
-1, to a very real extent, the nominal operations of the spacecraft were the focus of the mission. “On those initial flights, including the first one, we only had two people on board, and there was a lot to do,” Crippen said.
We didn’t have any payloads, except for instrumentation to look at all of the vehicle. So we were primarily going through what I would call nominal things for a flight, but they were being done for the first time, which is the way a test flight would be done. First you want to make sure that the solids would do their thing, that the main engines would run, and that the tank would come off properly, and that you could light off the orbital maneuvering engines as planned; that the payload bay doors would function properly; that you could align the inertial measuring units; the star trackers would work; the environmental control system, the Freon loops, would all function. So John and I, we were pretty busy. The old “one-armed paper hanger” thing is appropriate in this case. But we did find a little time to look out the windows, too.
For Young, it was his fifth launch into space—or technically, sixth, counting his space launch from the surface of the moon during
Apollo 16
. For Crippen, it was his first, and the experience of being in the weightlessness of orbit was a new one. “We knew people had a potential for space sickness, because that had occurred earlier, and the docs made me take some medication before liftoff just in case,” he said. “I was very sensitive when we got on orbit as to how I would move around. I didn’t want to move my
head too fast. I didn’t want to get flipped upside down in the cockpit. So I was moving, I guess, very slowly.”
Moving deliberately, Crippen eased to the rear of the flight deck to open up the payload bay doors. Other than the weightlessness, Crippen said, the work he was doing seemed very much like it had during training. “I said, ‘You know, this feels like every time I’ve done it in the simulator, except my feet aren’t on the floor.’ . . . The simulations were very good. So I went ahead and did the procedure on the doors. Unlatched the latches; that worked great. Opened up the first door, and at that time I saw, back on the Orbital Maneuvering System’s pods that hold those engines, that there were some squares back there where obviously the tiles were gone. They were dark instead of being white.”
The tiles, of course, were part of the shuttle’s thermal protection system, which buffers it against the potentially lethal heat of reentry. While the discovery that some tiles were missing was an obvious source of concern for some, Crippen said he wasn’t among them.
I went ahead and completed opening the doors, and when we got ground contact . . . we told the ground, “Hey, there’s some tile missing back there,” and we gave them some
TV
views of the tiles that were missing. Personally, that didn’t cause me any great concern, because I knew that all the critical tiles, the ones primarily on the bottom, we’d gone through and done a pull test with a little device to make sure that they were snugly adhered to the vehicle. Some of them we hadn’t done, and that included the ones back on the
OMS
pods, and we didn’t do them because those were primarily there for reusability, and the worst that would probably happen was we’d get a little heat damage back there from it.
The concern on the ground, however, dealt with what else the loss of those tiles might mean. If thermal protection had come off of the
OMS
pods, could tiles have also been lost in a more dangerous area—the underside of the orbiter, which the crew couldn’t see? Crippen said that he and Young chose not to worry about the issue since, if there was a problem, there was nothing they could do about it at that point.
As the “capsule communicator,” or CapCom (a name that dates back to the capsules used for previous
NASA
manned missions), for the flight, astronaut Terry Hart was the liaison in Mission Control between the crew and the flight director and so was in the middle of the discussions about the tile
situation. “Here were some tiles missing on the top of the
OMS
pods, the engine pods in the back, which immediately raised a concern,” Hart said.
Was there something underneath missing, too? Of course, we’d had all these problems during the preparation, with the tiles coming off during ferry flights and so forth, and the concern was real. I think they found some pieces of tiles in the flame trench [under the launchpad] after launch as well, so there was kind of a tone of concern at the time, not knowing what kind of condition the bottom of the shuttle was in, and we had no way to do an inspection. . . . All of a sudden the word kind of started buzzing around Mission Control that we don’t have to worry anymore. So we all said, “Why don’t we have to worry anymore?” “Can’t tell you. You don’t have to worry anymore.” So about an hour later, Gene Kranz walked in and he had these pictures of the bottom of the shuttle. It was, “How did you get those?” He said, “I can’t tell you.” But we could see that the shuttle was fine, so then we all relaxed a little bit and knew that it was going to come back just fine, which it did.
Hart said that the mystery was revealed for him many years later, after the loss of
Columbia
in 2003, explaining that it came out that national defense satellites were able to image the shuttles in orbit.
Despite Crippen’s concerns about space sickness that caused him to be more deliberate during the door-opening procedure, he said that the issue proved not to be a problem for him. “I was worried about potentially being sick, and it came time after we did the doors to go get out of our launch escape suits, the big garments we were wearing for launch. I went first and went down to the mid-deck of the vehicle and started to unzip and climb out of it, and I was tumbling every which way and slipped out of my suit and concluded, ‘Hey, if I just went and tumbled this way and tumbled that way, and my tummy still felt good, then I didn’t have to worry about getting sick, thank goodness.’”
In fact, Crippen found weightlessness to be rather agreeable.
This vehicle was big enough, not like the [Apollo] command modules or the Gemini or Mercury, that you could move around quite a bit. Not as big as Skylab, but you could take advantage of being weightless, and it was delightful. It was a truly unique experience, learning to move around. I found out that it’s always good to take your boots off—which I had taken mine off when I came out of the seat—
because people, when they get out and then being weightless for the first time, they tend to flail their feet a little bit like they were trying to swim or something. So I made sure on all my crews after that, they know that no boots, no kicking.
A few of the issues encountered on
Columbia
’s maiden voyage were problems with the bathroom and trying several times to access a panel that, unbeknownst to the crew, had been essentially glued shut by one of the ground crew. However, there were plenty of things that went well. One of those, Crippen said, was the food, which was derived from the food used during Skylab missions. “We even had steak. It was irradiated so that you could set it on the shelf for a couple of years, open it up, and it was just like it had come off the grill. It was great. We had great food, from my perspective.”
STS
-1 was, in and of itself, a historic event, but another historic event around the same time would have an impact on a key moment of the flight, Crippen recalled.
There was an established tradition of the president talking to astronauts on historic spaceflights, and the first flight of the new vehicle and the first American manned spaceflight in almost six years ordinarily would have been no exception. But, in that regard, the timing of
STS
-1 was anything but ordinary. President Reagan was shot two weeks prior to our flight, so . . . the vice president called, as opposed to the president. The vice president, [George H. W.] Bush, had also come to visit us at the Cape. It was sometime prior to flight, but we had him up in the cockpit of
Columbia
and looked around, went out jogging a few miles with him. So we felt like we had a personal rapport with him, and so when we got a call from the vice president, it was like talking to an old friend.
The launch had been successful; the orbital phase had been successful, demonstrating that the vehicle functioned properly while in space; and now one more major thing remained to be proven: that what had gone up could safely come back down. “That was also one of these test objectives, to make sure that we could deorbit properly,” Crippen said.
We did our deorbit burn on the dark side of the Earth and started falling into the Earth’s atmosphere. It was still dark when we started to pick up outside the window; it turned this pretty color of pink. It wasn’t a big fiery kind of a thing like they had with the command modules; . . . they used the ablative heat shield. It was just a bunch of little angry ions out there that were proving that it was
kind of warm outside, on the order of three thousand degrees out the front window. But it was pretty. It was kind of like you were flying down a neon tube, about that color of pink that you might see in a neon tube.
At that point in the reentry, the autopilot was on and things were going well, according to Crippen. He said that Young had been concerned with how the vehicle would handle the S-turns deeper into the atmosphere and took over from the autopilot when the orbiter had slowed to about Mach 7, the first of a few times he switched back and forth between autopilot and manual control, until taking over manually for good at Mach 1. At the time of the first switch, the crew was out of contact with Mission Control. “We had a good period there where we couldn’t talk to the ground because there were no ground stations,” Crippen explained. “So I think the ground was pretty happy the first time we reported in to them that we were still there, coming down.”