SpaceX to reattempt
landing rocket on ocean barge
Technology entrepreneur Elon Musk’s
SpaceX is to attempt to land its next Falcon 9 rocket on a barge in the Pacific Ocean , seeking another milestone a month after
landing a booster on the ground in a spaceflight first, the company said on
Friday.
The Falcon 9 rocket, carrying a NASA
ocean-monitoring satellite, is slated to blast off from Vandenberg Air Force
Base in California
on Sunday next week.
About two minutes after liftoff, the
first stage of the rocket is expected to separate, flip around, fire engines to
slow its fall, deploy landing legs and attempt to touch down on a floating
landing pad in the Pacific Ocean .
SpaceX has tried ocean landings twice
without success, but officials are optimistic after the company last month
safely returned a Falcon 9 booster to a landing pad at Cape Canaveral Air Force
Station in Florida .
Accomplishing an ocean landing would
give the California-based SpaceX flexibility to recover its boosters from a
wider variety of space missions.
The firm, owned and operated by Musk, wants
to refurbish and refly its rockets, potentially slashing launch costs.
Similar efforts are underway by fellow
technology titan Jeff Bezos’ rocket company, Blue Origin, as well as industry
stalwart United Launch Alliance, a partnership of Lockheed Martin and Boeing.
For now, SpaceX is focusing on reusing
just the first stage of its Falcon rockets, which sell for about US$61 million,
the company’s Web site shows.
Of that, only about US$200,000 is for
fuel, Musk said at the American Geophysical Union conference in San Francisco last month.
“With reusable rockets, we can reduce
the cost of access to space by probably two orders of magnitude,” or a factor
of 100, Musk said at the conference.
The company eventually wants to return
the rocket’s second stage for reuse in future launches as well.
The rocket slated to launch NASA’s
Jason-3 satellite is an older version of the rocket that flew last month and
does not have the power to attempt a touchdown on land, SpaceX said.
The booster that landed on Dec. 21 is to
be test-fired in Florida ,
but probably not reflown, Musk told reporters after the landing. He said the
company likely would attempt relaunch of another recovered rocket this year.
SpaceX has more than 60 missions on its
schedule, worth about US$8 billion.
Who: technology entrepreneur Elon Musk’s
SpaceX
What: They attempt to land its next rocket
on a barge in the Pacific Ocean .
When: 1, Jan, 2016
1. entrepreneur:企業家
2.
barge:大型平底船
3.
satellite:衛星
4.
refurbish:翻新
5.
liftoff:發射