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THE FLIGHTPACK
Visual consultant Craig Hayes was tasked with designing and
building RoboCop's jetpack - both in miniature for use with
the stop-motion puppet, and in full-scale for Robert Burke to
wear during the bluescreen shoot.
Officers from the Detroit Police Department at last join forces
with the beleaguered rebels, But even their added firepower
proves inadequate against the enemy. Just when all seems lost,
the cavalry appears in the form of RoboCop - flying through
the air courtesy of a prototype jetpack - firing on the Rehabs
and Splatterpunks with his multi-weapon arm.
Initially, the sequence was designed to be realized with a stop-motion puppet
augmenting bluescreen footage of Robert Burke. "We supplied
approximately ten stop-motion shots of RoboCop flying around
using thejetpack: Phil Tippett recalled. "The puppet was shot
against a frontlit bluescreen with motion control camera moves,
On a few of the shots there were camera moves, so Pete Kozachik
integrated the motion of the flying puppet with whatever move
was in the background." Background matching with the Atlanta
plates proved to be no easy feat, "Whatever system they used to
dolly the camera, it was really slow, Because the scene had so
many people, so many explosions, and so much smoke, it was
impossible to undercrank the camera or skip-frame later on to
increase the speed." The solution was to move the puppet. "We
animated and shot the sequence so that RoboCop would always
overtake the camera, constantly either dropping in from above
it and rushing away, or emerging as a pinpoint in frame and fly-
ing up over the camera."
Originally they wanted RoboCop to have an entire flying tank but as that
would have been too expensive, they settled for a jetpack.
After doing a week's worth of designs, Craig Hayes and his team built two full-scale jetpacks - one fully
actuated, and another for stunt purposes only. "We made the
functional one out of materials that could withstand the high
temperatures of the practical flame effects that would be pro-
vided by Jeff Jarvis.lt was made out of vacuformed ABS plastic - built
to withstand a lot of abuse - and had cable-actuated
clamps and functional lights." For the live-action shots, Robert
Burke was strapped into an elaborate flying rig on a bluescreen
stage. "We built the flying apparatus: said Jeff Jarvis, "which
was a servo and hydraulically controlled belly pan that could do
pitch and yaw and roll moves. Since the miniatures had already
been shot, we had to match what the animators had done."
Despite the elaborate flight work, a sneak preview much later
in the schedule revealed mixed audience reactions to the sequence.
"It was clear to us that we had a home run of a premise,
but that for some reason the live-action bluescreen elements
were not properly incorporated," admitted Director Fred Dekker, Alternatives
were hurriedly explored, "I put in a call to ILM at one point,just
asking for their advice; and they told me they had gone through
the same process on The Rocketeer, When you have somebody
up in the air in front of a bluescreen, it is going to be very diffi-
cult to shoot it in such away that it really feels as though he's
flying, There's no elegance to it, The footage has a cumbersome,
weighted-down quality. Even with motion control, there is a sub-
liminal sense that what you're seeing is a guy hung with a pole
up his butt, as opposed to something that is whisking through
the air."
To strengthen the sequence, Tippett Studio provided some
additional stop-motion shots, "Fred Dekker and Pat Crowley
came to my studio with their first pass on the flying sequence:
recalled Phil Tippett. "I suggested various shots that could replace
others and enhance the sequence. We came up with a new approach since
the rocket-man idea was impossible to achieve due
to the slow tracking on the background plates. I suggested we
take a 'hummingbird-man' approach - have RoboCop zing into
shots, brake, hover, do his business, then zing out: Ultimately,
all but two of the live-action shots were replaced with new stop-
motion, "The first batch we had done took maybe three months,
Eight months later, we did the second batch in about six weeks,
Eric Swenson programmed the motion control flying rigs and
lit the RoboCop elements, We used different rigs for different
kinds of movement."
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