Going Back to Space: ATK 's Liberty rocket
ATK's Liberty rocket and capsule program.
With the end of the shuttle and the Space Transportation System (STS),
it seemed to some outsiders that ATK would no longer have a market for
those large 4-segment Solid Rocket Boosters (SRB's) that propelled the
shuttle orbiters into space. Also not boding well for the company was
the cancellation of the Constellation program and the Ares rocket system
after only one test of the Ares 1-X. But you can't keep a good team
down. ATK has bounced back as a major competitor in the CCD race to
space.
Comparing the commercial rockets under development or already
available. "A" is the SpaceX Falcon Heavy, still under development. "B"
is the Liberty rocket.
ATK has joined forces with key companies to put together the Liberty
commercial crew transportation system. With ATK providing a 5-segment
SRB first stage, the makers of the Arianne rocket, Astrium, providing
the liquid-fueled second stage, and now Lockheed Martin providing
support for ATK's Liberty capsule, all the components are together.
Computer illustration of Liberty on crawler/tower moving to the pad.
The Liberty is almost as tall as a Saturn rocket, but a great deal less
expensive!
Because much of the hardware of the rocket is already tested and flown,
it remains to ATK to assemble the package and flight test it and attain a
human-rated approval. The toughest part of the process will be quickly
developing a crew capsule. And ATK has that in hand, as well. Between
2007 and 2010, ATK had built a composite-structure capsule for a NASA
program to reduce risk in transporting humans to space. Now ATK will
modify the capsule to fully comply with safety and engineering
requirements.
Component-ready Liberty. SRB's from the shuttle, liquid-fuel stage from the Arianne. Capsule by ATK with Lockheed support.
ATK also has the most ambitious schedule of the companies racing to
provide commercial crew service. According to their plans, the first
unmanned mission will launch in 2014, with the first crewed spaceflight
in 2015. This would place ATK a year ahead of SpaceX Dragonrider, and
several years ahead of NASA's SLS/Orion system.
5-segment SRB first stage testing in Utah.
ATK is finishing testing of the SRB first stage in the Utah test
facility. They are also working on the launch abort system that could
save the crew capsule in an emergency on the pad or during launch. As
you can see from the picture below, progress is moving at a rapid pace
on the Liberty capsule.
Engineers preparing the composite-structure spacecraft.
Barring any unforeseen difficulties in testing, my money would be on ATK
to be fairly close to its schedule projections. The project is led by
former astronaut Kent Rominger and the ATK team is experienced in
building space technology systems. Keep an eye out for more news from
ATK as their systems get ready for launch.
All images for this blog post are credited to ATK.
All images for this blog post are credited to ATK.
Going Back to Space: SpaceX Makes History
The Falcon 9 rocket with Dragon cargo spacecraft.
Space Exploration Technologies, or SpaceX, builds the Falcon 9 rocket
and the Dragon cargo spacecraft. They are the first among the private
companies to build and launch an orbiting spacecraft. It could be said
that Boeing, Lockheed, and other companies were first to build the
Mercury, Gemini, Apollo and Shuttles but those who totally government
operations. On December 9, 2010, SpaceX became the first privately
funded company to launch, orbit, and recover their spacecraft.
SpaceX launch facility at Cape Canaveral.
Launched from LC-40 (from which NASA had launched all the Titan-3 and
Titan-4 rockets from 1965 to 2005), the Falcon 9 rocket successfully
placed the Dragon test spacecraft into an orbit 179 miles high. The
Dragon made two successful orbits and then re-entered the atmosphere for
a splashdown in the Pacific Ocean, being recovered within 20 minutes of
touchdown.
COTS Demo Flight 1 blasts off.
The flight fulfilled many of the milestones required by the NASA
Commercial Orbital Transportation Services contract (COTS).
Additionally, after the Dragon spacecraft separated, the second stage
was reignited and moved to a higher orbit of 6,800 miles, proving the
system could reach higher orbits. SpaceX now prepares for further
milestones in the contract with NASA.
Dragon perched on the Flacon 9, on pad LC-40 right now.
SpaceX plans to accomplish a major feat this weekend. In the early hours
of Saturday morning, another Falcon-9 rocket will lift off with another
Dragon capsule. This time, the capsule is full of supplies for the
International Space Station. This mission is expected to fulfil the COTS
demo fllights 2 and 3 together. The Dragon spacecraft will be guided to
make a near pass of the ISS, and on a subsequent orbit, to approach the
ISS within reach of the station's robotic arms. Astronauts of
Expedition 30 will use the arms to grapple the Dragon and dock it to one
of the hatches.
Computer graphic of Dragon about to be grappled by ISS.
We're all fingers crossed hoping the best for this mission. Should
everything go well, SpaceX will be well on its way to providing regular
cargo servicing of the ISS. There's an additional bonus for NASA to use
the Dragon: It is the only cargo spacecraft capable of returning items
from the ISS to the Earth. Both the ATV of Europe and the Progress of
Russia routinely burn up in a re-entry.
Falcon-Heavy at the pad. Computer image.
SpaceX is not stopping with cargo delivery. They are well on their way
to launching humans to space. Company founder Elon Musk has a vision to
take his rockets all the way to Mars, eventually. To get moving on that
path, the company's engineers are designing the Falcon-Heavy, which will
be capable of lifting much larger payloads into orbit and beyond. More
significantly, SpaceX is building a human-rated version of the Dragon
capsule.
Inside DragonRider.
The crewed variant of the Dragon capsule will be called the DragonRider.
As you can see in the picture above, it can hold up to 7 astronauts or a
combination of personnel and cargo. SpaceX is currently building the
first test capsules under the CCD program, which we talked about in an
earlier blog. The company is also testing a launch abort system, and
expects to fly the DragonRider by 2016.
All photos for this blog post are credited to SpaceX.
All photos for this blog post are credited to SpaceX.
Going Back to Space: Riding with Russians
Russian Soyuz TMA-04M mission blasts off.
On Monday night the Russian Baikonur Cosmodrome reverberated with the
roar of the Soyuz rocket blasting off to the ISS. On board mission
TMA-04M was the second part of the Expedition 31 crew: Russian
cosmonauts Gennady Padalka and Sergei Revin, with NASA astronaut Joe
Acaba. The liftoff was performed successfully and the Soyuz capsule is
now in orbit on course for docking with the International Space Station
on Thursday.
Flying with Joe Acaba is a Smokey the Bear stuffed toy. Credit: U.S. Forest Service.
With the end of the Space Transportation System (STS) or Shuttle
program, NASA relies on the Russian space agency to transport our
astronauts back and forth from the ISS. With America's further reliance
on the venerable Soyuz rocket system, the Russian government and space
agency are seeking greater control over the ISS and the activities
there. In addition, the Russians did not fail to grasp at a business
opportunity: the cost of a seat on the Soyuz for the Americans jumped by
at least 40%.
Astronaut Joe Acaba rides the Soyuz to low Earth orbit.
The Soyuz rocket has been a staple of the Russian space program for
several decades. With its first unmanned flight in 1966, both the Soyuz
spacecraft and the Soyuz rocket have become an icon of the Russian space
effort. Like the shuttle, it has not been without its failures. The
first cosmonaut on Soyuz 1, and the three-man crew of Soyuz 11, died
during re-entry accidents. However, with the vast number of Soyuz
flights succeeding, the Soyuz has become the safest space transportation
system. It is also one of the most cost-effective. Because it has been
built so many times, the cost has been managed to low levels, an
achievement admired by many Americans.
Soyuz TMA-06 in orbit.
Russia currently flies a three-person crew on the Soyuz, and astronauts
and other nation cosmonauts must train at the Russian space agency and
learn the Russian language to participate in flights. An additional
Soyuz spacecraft is kept at the ISS as an emergency escape craft. Russia
has also built a cargo version of the capsule. The unmanned cargo
version is called the Progress, the manned versions are the current TMA
designation. This current manned version was revised from the earlier TM
version when it was realized that taller astronauts would need extra
room on the Soyuz. The TMA version has been flying since 2003.
Progress M-52, unmanned cargo version. Once supplies are emptied from
the Progress aboard the ISS, space station garbage and unwanted
equipment is stored aboard. When it undocks, ground controllers guide it
to a fiery re-entry, burning it up over an ocean.
Over the last couple of years there have been some anxious moments
between NASA and Russia as there have been some glitches and landing
difficulties with the Soyuz spacecraft and other Russian rockets. While
those problems are fixed, many Americans feel the Soyuz system is old.
Even the Russians must be feeling the age of the design, as they have
proposed a new design called the Prospective Piloted Transport System,
which will carry up to six occupants.
Overall though, NASA is resigned to carry on our human space program at
present by using whatever ride the Russians can provide. Right now there
is no alternative. And perhaps that's what bugs Americans the most.
With proper planning, we should have had a replacement by now.
by Mark Daymont
Space Center Educator