OUTSIDE MAN

The fruitless station-keeping exercise had led to a 42 per cent depletion of their fuel supply, which would correspondingly reduce the extent to which McDivitt could manoeuvre the spacecraft while White was outside. It forced the astronauts to continue with their primary mission, the EVA, and leave rendezvous for Gemini VI. McDivitt, aware that his partner was tired and hot after the rendezvous attempt, told the Kano tracking station that he wanted the spacewalk postponed from the second to the third orbit. Chris Kraft agreed and the astronauts spent some time relaxing, admiring the view of the Gulf of Mexico and Florida and chatting to Gus Grissom, the Houston capcom. Then they dived headlong into the 54-item checklist to prepare the EVA equipment. At length, White snapped a gold-tinted faceplate onto his helmet, hooked up the 7.4 m umbilical to provide him with oxygen and a communications link to McDivitt and, with the aid of a small mirror, strapped the 3.7 kg chest pack into place. He checked his camera gear three times, wanting to make sure he did not leave the lens cap stuck on. “I knew I might as well not come back if I did,’’ White said later.

Since the EVA would place the entire cabin into vacuum, the astronauts had to steadily reduce its pressure from the normal 3.51 bars to 2.55 bars. Depressurisation commenced over Carnarvon in Australia, but quickly hit a snag when the overhead hatch refused to unlatch. A spring had failed to compress properly. Four hours and 18 minutes after launch, at 2:34 pm, White cranked a ratchet handle to loosen a set of prongs lining the opening of the hatch, raised it to 50-degrees-open and poked his head into the void.

After receiving assurance from Kraft that he was good to go, White pushed himself from his seat and caught his first glimpse of Earth from the ethereal vantage point known only to the spacewalker – with barely a helmet faceplate and 166 km of emptiness separating him from his home planet. ‘Below’, he beheld the intense blue of the Pacific and, coming up to the east, Hawaii. Losing no time, he tested the hand­held manoeuvring device and found that it responded crisply to his commands, as he ‘squirted’ it to propel himself firstly underneath the capsule, then to its top. Within a short time, the manoeuvring device’s gas supply was gone and for the remainder of his 21 minutes outside, White twisted and hand-pulled himself backwards and forwards along his tether. The umbilical imparted the force to the spacecraft, which reacted in response. ‘‘One thing about it,’’ noted McDivitt as he fired the thrusters to hold the craft stable, ‘‘when Ed starts whipping around that thing, it sure makes the spacecraft hard to control.’’ Also tricky was the fact that the umbilical kept drawing White towards the adaptor section and he had no desire to contaminate his suit with the toxic residue from burning monomethyl hydrazine and nitrogen tetroxide.

The spacecraft was nearing the California coastline when Capcom Gus Grissom asked for photographs. ‘‘Get out in front where I can see you again,’’ McDivitt called and White duly complied. It is hard to comprehend that in little more than a quarter of an hour, White had ‘walked’ from the central Pacific, crossed California and, very soon, he and McDivitt were gliding high above Houston, talking to Grissom, somewhere, directly beneath them. ‘‘There’s Galveston Bay right there!’’ McDivitt yelled with excitement. ‘‘Hey, Ed, can you see it on your side of the spacecraft?’’ White concurred and snapped a picture with a 35 mm camera affixed to his hand-held pack. McDivitt, using a 70 mm Hasselblad, also took pictures, venturing ‘‘they’re not very good’’. On the contrary, these actually turned into some of the most iconic images from the annals of the early manned space effort. A 16 mm movie camera also recorded scenes of White in motion, bouncing backwards and forwards over a cloud-studded, blue-and-white Earth.

From his seat in the MOCR, Grissom was having a hard time trying to contact the two men. Every time McDivitt or White spoke, the spacecraft’s voice-activated system cut off messages from Mission Control – and they talked a lot during those exhilarating minutes. When McDivitt called Houston to ask if there was anything they wished to say, Kraft pushed his communications switch, something he rarely did, and ordered, ‘‘The Flight Director says ‘Get back in’!’’ The spacecraft was heading toward Earth’s shadow and White had to be inside by then with the hatch closed. As White returned to the cabin, he described it as ‘‘the saddest moment of my life’’. His last view was of the entire southern portion of Florida and the islands chain of Cuba and Puerto Rico. McDivitt turned up the interior lights to guide his partner to safety in case they hit orbital darkness before he was in. White pushed his feet back through the hatch, onto his seat and finally under the instrument panel. He had walked across America – and then some – in barely 21 minutes.

White’s return to the capsule was not entirely smooth, however, and his pulse rate soared from 50 to 178 beats per minute at the end of the spacewalk. He closed the hatch over his head and reached for the handle to lock it, quickly realising that it would be as hard to seal as it had been to open. As he pushed on the handle, McDivitt pulled onto him to give him some leverage and, eventually, the hatch was secured. The official ending time of the first American spacewalk was 3:10 pm, some four hours and 54 minutes into the mission and 36 minutes between the opening and closure of the hatch. Repressurisation started two minutes later. White had long since exceeded the cooling capacity of his space suit, resulting in severe condensation inside his helmet and sweat streaming into his eyes. The hatch problems led to a decision from the MOCR not to re-open it again to discard unneeded equipment.

After the mission, White would recount that the hand-held manoeuvring unit worked in the pitch and yaw axes, more or less as it had done during ground simulations. In the roll axis, however, he considered it more difficult to control without using excessive fuel. He experienced no sensations of vertigo or disorientation; nor, indeed, did he feel any inkling of the tremendous 28,100 km/h at which he was moving. White’s excursion also demonstrated that astronauts would be able to cross from the Apollo lunar module back to the command module, if necessary, in the event that the two spacecraft could not dock properly after ascent from the Moon’s surface.

Meanwhile, aboard Gemini IV, White relaxed and McDivitt began powering down some of the spacecraft’s systems to conserve electrical power and OAMS fuel, intending to drift for the next two and a half days. Plans called for the men to sleep alternate periods of four hours each, although this would prove difficult with the constant crackle of radio chatter from MOCR, frequently bumping into each other and an inability to turn down the volumes on their headsets. In spite of the drama of the past few hours, they had barely begun their 98-hour mission. It would be an uncomfortable and tedious slog.