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- <text id=93TT2146>
- <title>
- Aug. 30, 1993: Bunny-Hopping Into Space
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1993
- Aug. 30, 1993 Dave Letterman
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- TECHNOLOGY, Page 47
- Bunny-Hopping Into Space
- </hdr>
- <body>
- <p>A cheap, lightweight rocket could make the shuttle obsolete
- </p>
- <p>By PHILIP ELMER-DEWITT--With reporting by Ellen Germain/Washington and Nancy Harbert/Albuquerque
- </p>
- <p> None of the spectators at the Army's White Sands Missile Range
- had ever seen anything quite like it. With a burst of smoke
- and a flash of light, a 40-ft.-tall white obelisk shuddered
- briefly, popped off a launch pad and rose 150 ft. over the New
- Mexico desert. Then it suddenly stopped in midair, moved sideways
- for 350 ft. and started back down, engines firing all the way.
- At the last moment, four rodlike pods shot out of the tail to
- ease the bullet-shaped rocket gently to the ground.
- </p>
- <p> It was the first time a spacecraft had ever come back to earth
- tailfirst, although similar landings have been made on Mars
- and the moon. "My jaw dropped," says Tom Williams, director
- of communications for McDonnell Douglas, the defense contractor
- that built the odd-looking rocket. "I'd never seen a space vehicle
- stop on a dime before. It was like something in a monster movie."
- </p>
- <p> But the Delta Clipper-Experimental (or DC-X) is quite real,
- and its brief maiden voyage last week--space engineers called
- it a "bunny hop"--could signal the start of a new era in space
- travel. A grandchild of the original Star Wars program, the
- Delta Clipper is designed to accomplish precisely what the space
- shuttle promised but never delivered: cheap, dependable access
- to space.
- </p>
- <p> Everything about the DC-X, from its basic components to the
- speed with which it moved from the computer-aided design screens
- and onto the launch pad--the first stage of development took
- just 18 months--shows how much was lost in the past two decades,
- a period in which the U.S. space program was all but stalled.
- The current fleet of American launch vehicles--including the
- shuttle that balked on launch in mid-August and the Titan IV
- launcher that exploded in midair 11 days before that--were
- built from blueprints drawn in the 1960s and '70s, a lifetime
- ago in terms of research into materials, semiconductors and
- computer design.
- </p>
- <p> Constructed of epoxy and graphite-fiber composites and crammed
- with advanced electronics, the DC-X was designed to take advantage
- of a burst of technological progress--and it shows. Thanks
- to a skin as thin as a credit card, which replaces the heavy
- aluminum shell of conventional spacecraft, the rocket is light
- enough to leap into orbit in a single bound, avoiding the wasteful
- shedding of expensive booster stages. The DC-X is the world's
- first fully reusable spacecraft, and its myriad computer systems
- make it easy to launch and repair. It can be fired off by a
- crew of three, far fewer than the army of 1,700 needed by the
- shuttle. Bottom line: the Delta Clipper should be able to carry
- 10-ton payloads to orbit--manned or unmanned--for $500 to
- $1,000 per lb., compared with 28 tons a load at $10,000 per
- lb. for the space shuttle.
- </p>
- <p> There are still some obstacles to overcome. The rocket that
- flew last week is a prototype that is only one-third the size
- of the planned vehicle. Even if the DC-X continues to perform
- well (the next flight is scheduled for this week), it could
- take five years and at least $2 billion before a full-scale
- Delta Clipper is ready for business. But aerospace executives
- are already dreaming about the day when getting into orbit costs
- no more than a transatlantic flight. Among their pet ideas:
- nuclear-waste disposal, space-based advertising and low-earth-orbit
- tourism. A weekend visit to a space station, anyone?
- </p>
-
- </body>
- </article>
- </text>
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